درد کا حد سے گزرنا ہے دوا ہو جانا
نحمدہ ونصلی علی رسولہ الکریم امّا بعد فاعوذ بااللہ من الشیطن الرجیم
بسم اللہ الرحمن الرحیم
معزز اسا تذہ کرام اور میرے ہم مکتب ساتھیو!السلام علیکم! آج مجھے جس موضوع پر گفتگو کرنی ہے وہ ہے:’’درد کا حد سے گزرنا ہے دوا ہو جانا ‘‘
جنابِ صدر!
دکھ درد، تکلیف ہم معنی الفاظ ہیں، زندگی میں ہر شخص کوکسی نہ کسی موقع پر رنج وغم اور دکھ و تکلیف سے واسطہ پڑتا ہے خوشیاں روٹھ جاتی ہیں، رنج و الم کے بادل گھٹائیں بن کر برسنا شروع ہو جاتے ہیں گھر کے آنگن میں نوید ومسرت کی چاندنی بکھیرنے والا قمر گہنا جاتا ہے۔
صدرِ ذی وقار!
زندگی کے نشیب وفراز سے انسان ہمکنارر ہتا ہے۔ افراط و تفریط کا سلسلہ شروع رہتا ہے، کامیاب انسان وہ ہے جوایسے حالات میں مستقل مزاج رہتا ہے ان بوقلمونیوں سے اس کے پائے استقلال میں لغزش نہیں آتی اور یوں اس کی زندگی کی گاڑی رواں دواں رہتی ہے۔بقول غالبؔ
رنج سے خوگر ہوا انساں تو مٹ جاتا ہے رنج
مشکلیں اتنی پڑیں مجھ پر کہ آساں ہو گئیں
صدرِ محترم!
جب کوئی چیز حد سے بڑھ جاتی ہے، اپنی انتہا کو پہنچ جاتی ہے تو اس کا وجود عنقا ہو جاتاہے اس کی حیثیت بدل جاتی ہے اس کے نفع نقصان کا تصور تبدیل ہو جاتا ہے۔ اس کے مضر اثرات مصلح ہو جاتے ہیں اس میں یکسر تبدیلی آجاتی ہے اور ایّام کے ساتھ ساتھ وہ قصہ پارینہ بن جاتی ہے۔
محترم سامعین!
رات اپنی انتہا کو پہنچتی ہے تو بادِ نسیم صبح کے حیات بخش جھونکوں سے آشنا ہے۔ دن اپنی بلندیوں کومس کرتا ہے تو قمر کی برووت بھری چاندنی قلب و ذہن کی طراوت کا باعث بنتی...
COVID-19 is a disease that cause respiratory illness due to novel corona virus. It was reported to WHO on December 31,2019 for the first time. The outbreak of this disease started from Wuhan city, China. Now COVID-19 pandemic is spreading worldwide mostly in Europe and North America, these regions have high prevalence of obesity. In the pathogenesis of COVID-19 disease, obesity assumes a significant job. Theinsusceptible framework, which is official in the pathogenesis of COVID19, assumes asignificant job in weight instigated fat tissue aggravation. In the fat tissue the irritationbrings about metabolic brokenness conceivably prompting dyslipidemia, type 2diabetes mellitus, insulin obstruction, hypertension and cardiovascular sickness. Obesity has been expanded the vulnerability to contaminations. In this pandemic, a large number of obese individual with Covid-19 are reported. Infection rate in obese is greater due to poor immunity, comorbidity and inadequate nutritional needs. Statistical analysis showed that about 41.7% patients reported in New York city were obese. Whereas 40% obese have been reported in United State of America with Covid-19. A report from UK indicated that 38% obese were admitted in ICU with Covid-19. According to Chinese researchers, obese individuals are 3-timesmore prone toward the development of Covid-19. So recent analysis indicated that obesity is the major risk factor of Covid-19. In COVID-19, overweight and obese patients have high danger of metabolic difficultiesand eternal infections that stoutness works. More nutrition care is required for such patients. As nutrition is a key factor for keeping up human wellbeing, for example, denseimpervious framework and satisfactory admission of supplements and dietaryenhancements. Tolerant with COVID-19 create contamination from slight to seriousindications bound to the dietary status. Consequently, assessing wholesome status ofindividuals with contamination turns out to be increasingly significant. Through dietaryhelp, we can bring down the danger of oxidative pressure, infection contamination andexpands invulnerability framework among obese people especially.
This thesis primarily addresses the systematic modification of polyamides, poly(amide- imide)s, polyimides and polyurethanes to yield high performance poly(thiourea-amide)s, poly(thiourea-amide-imide)s, imide)s, poly(thiourea-ether-imide)s, poly(urethane-thiourea)s, poly(phenylthiourea-azomethine- poly(urethane-thiourea-imide)s and poly(urethane- azomethine-thiourea)s. The foremost goal of current research is the structural modification of polymers exploiting the synthetic chemistry to attain excellent solubility via slightly disrupting polymer chain regularity and packing. Various synthetic schemes were developed for the inclusion of thiourea moieties along with other desired linkages in these polymers. The designed monomers (dinitro, diamines, dicarboxylic acids, diacid chlorides, diols and diisocyanates) bearing pre-formed linkages were then synthesized and employed for the preparation of novel thiourea-based polymeric materials. The incorporation of different functional groups provides an opportunity to control certain physical properties such as solvent miscibility, η inh , crystallinity, molecular weight, thermal stability and flame retardancy of the resulting polymers. The effect of thiourea and other functional groups on the properties of newly synthesized polymers were scrutinized together with their structure-property relationship. Major tools utilized for the examination of polymer properties are FTIR, 1 H NMR, solubility, viscometry, GPC, TGA, DSC and XRD. Novel thiourea-based polymers demonstrated outstanding thermal stability without deteriorating their organosolubility or processability. Another objective of the work was to evaluate the expedient applications and potential relevance of these valuable high-performance materials for advanced technologies. The processable poly(thiourea-amide)s, poly(thiourea- amide-imide)s, poly(thiourea-ether-imide)s and poly(urethane-azomethine-thiourea)s were found to have superior thermal stability as well as non-flammability. Poly(phenylthiourea-azomethine- imide)s having C=S and –C=N– moieties can act as imminent contenders to fabricate certain electrically conducting materials. Poly(thiourea-amide)s, in addition to the excellent solubility and thermal resistance, can be employed as solid extracting phases for the elimination of environmentally toxic metal ions from aqueous media. Prior to this effort, reported in peer- reviewed journals, synthesis of high temperature polymers bearing C=S entity was an unexplored area. Easy processability, high molar mass, heat and flame stability, electrical conductivity, etc, depict their high adaptability in future, rendering them backbone materials in polymer science.