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Home > Syntheses and Charaction of Optically Active Small Aza-Heterocyclic Scaffolds: 1, 2, 4-Triazolo 3, 4-B Thiadiazoles

Syntheses and Charaction of Optically Active Small Aza-Heterocyclic Scaffolds: 1, 2, 4-Triazolo 3, 4-B Thiadiazoles

Thesis Info

Author

Shakir Ullah

Supervisor

Uzma Youns

Institute

Allama Iqbal Open University

Institute Type

Public

City

Islamabad

Country

Pakistan

Thesis Completing Year

2010

Thesis Completion Status

Completed

Page

66

Subject

Chemistry

Language

English

Other

Call No: 547 SHS; Publisher: Aiou

Added

2021-02-17 19:49:13

Modified

2023-02-17 21:08:06

ARI ID

1676710511253

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شاہدؔ شاذ

شاہدؔ شاذ
شاہدؔ شاذ(۱۹۷۰ء پ) شاہدؔ تخلص کرتے ہیں۔ آپ آدم کے ناگرہ پسرور میں پیدا ہوئے۔ آپ نے ایم ۔فل اردو علامہ اقبال اوپن یونیورسٹی اسلام آبادسے کیا ہے۔ آپ نے عملی زندگی کا آغاز گورنمنٹ ڈگری کالج ڈسکہ سے لیکچرار کے عہدے پر فائز ہوتے ہوئے کیا۔ آپ ڈسکہ کی ادبی او ر ثقافتی تنظیم بزمِ علم و ادب کے بانیوں میں شمار ہوتے ہیں۔ اس تنظیم کا آغاز ۱۹۸۸ء میں ہوا(۱۱۰۲) شاہد شاذ عبدالعزیز پرواز اور شاہد جعفری سے شاعری میں اصلاح لیتے تھے(۱۱۰۳)انھیں فکر کے ساتھ ساتھ شعر کو پورے فنی محاسن کے ساتھ صفحہ قرطاس پر اُتارنے میں کمال حاصل ہے۔
آپ نے غزل ،نظم ،قطعہ، گیت اورنعت میں طبع آزمائی کی ہے۔ اُن کا نعت کہنے کا انداز بڑا بھرپور اور تاثر انگیز ہے۔ غزل میں وہ اپنے محبوب کی خوبصورتی اور محبوبیت کا ذکر اچھوتے انداز میں کرتے ہیں اور اس کے حسن و جمال کے معدوم ہونے کی بات بھی کرتے ہیں۔ وہ صرف حسنِ بُتاں اور عشق تپاں کے ہی قائل نہیں بلکہ وہ زندگی کی اس جہت کے بھی شاہد ہیں۔ جہاں انسان کی مجبوریاں حسنِ لطیف کو بھول کر حقائق کی ان سنگلاخ چٹانوں کو عبور کرتی ہیں۔جہاں اس کی بنیادی ضرورتوں کے محدود ذرائع معدوم ہو جاتے ہیں۔ شاہد شاذ محبت کے سفر میں اپنی انا کا زاد راہ پاس رکھنے والے انسان ہیں۔ وہ کسی بھی میدان میں اپنی انا کے آئینے کو ٹھیس نہیں پہنچنے دیتے اور نہ ہی وہ اپنی انا کی لو کو کسی بھی پہلو سے کسی طورپر مدھم ہونے دیتے ہیں۔غزل اور نظم کے پہلو بہ پہلو وہ قطعہ لکھنے میں بھی اپنی ایک پہچان رکھتے ہیں۔ وہ زندگی کے ان احساسات کی نشاندہی کرتے ہیں جن سے ہمارے معاشرے کا انسان لاچار ہے۔ کچھ اشعار ملاحظہ ہوں:
جب...

COMPARISON OF REGIONAL MANUAL THERAPY AND STANDARD PHYSICAL THERAPY INTERVENTION IN FEMALES WITH SACROILIAC JOINT PAIN

Background and Aim: Sacroiliac joint pain is localized in the region of sacroiliac joint which can be increased by stress and provocation tests of the joint. Aim of this study was to compare two interventions for reduction of sacroiliac joint pain. Methodology: Study design was randomized clinical trial. Study was conducted in bajwah hospital and children polyclinic Lahore. Duration of study was six months. The total sample size was 64 patients. Females of 20-50 years old with diagnosed sacroiliac joint pain were included in this study. Compression and distraction objective tests were performed for further confirmation of sacroiliac joint pain.  Purposive sampling technique was used. Numeric pain rating scale (NPRS) and Oswestry low back disability questionnaire (ODI) were used to collect the data. Exclusion criteria was females with fractures and other abnormalities of spine. Results: Results showed that both groups were equal when assessed on baseline by normality test colmogorov-smirnova. Independent t test was applied to compare the mean value of NPRS. Pretreatment mean of NPRS scale for both the regional treatment and standard treatment groups was 7.After 4 weeks NPRS of regional treatment group was 4 and of standard treatment group was 7. The mean value of pretreatment ODI for regional treatment group was 33 and for standard treatment group was 34.After 4 weeks ODI of regional treatment group was 24 and mean of standard treatment group was 27. Conclusion: It is concluded that after giving equal sessions to both groups when results were assessed regional treatment is more effective than standard treatment.

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