Search or add a thesis

Advanced Search (Beta)
Home > Physic-Chemical and Nmr Studies of Some Silicones Polymers

Physic-Chemical and Nmr Studies of Some Silicones Polymers

Thesis Info

Access Option

External Link

Program

PhD

Institute

University of Sindh

City

Jamshoro

Province

Sindh

Country

Pakistan

Thesis Completing Year

1997

Thesis Completion Status

Completed

Subject

Chemistry

Language

English

Link

http://prr.hec.gov.pk/jspui/bitstream/123456789/3320/1/4351H.pdf

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676726896071

Asian Research Index Whatsapp Chanel
Asian Research Index Whatsapp Chanel

Join our Whatsapp Channel to get regular updates.

Similar


Siliconesorganosilicon compound mostly made from silane.silicone with silicon -nitrogen bondsare known as silazanes while those withsilicon-oxcygen bound arecalled silazanes.
Loading...
Loading...

Similar Books

Loading...

Similar Chapters

Loading...

Similar News

Loading...

Similar Articles

Loading...

Similar Article Headings

Loading...

مولانا شوکت علی

مولانا شوکت علی مرحوم
اسی مہینہ کادوسرا المناک سانحہ مولانا شوکت علی خادم کعبہ کی وفات ہے، شوکت علی مرحوم ہندوستان کے اُن پرچند مسلمانوں میں ایک تھے جن کی شہرت نہ صر ف ہندوستان تک محدود ہے بلکہ دنیائے اسلام کے دوردراز گوشوں تک ان کانام عزت واحترام کے ساتھ لیاجاتاہے اوریہ واقعہ ہے کہ مرحوم بجا طور پر اس شہرت و احترام کے مستحق تھے، پچھلے چند برسوں کوچھوڑ کر بلاخوف تردید کہا جا سکتاہے کہ مرحوم کی زندگی قربانی، ایثار، ولولہ اورجوش عمل کے اعتبار سے مسلمانوں کے لیے قابل تقلید نمونہ تھی،جنگ طرابلس اورجنگ بلقان سے لے کراب تک ہندوستانی مسلمانوں کی اجتماعی اورسیاسی زندگی کے جتنے دور گذرے ہیں مرحوم کی خدمات اُن تمام دوروں میں اس قدر نمایاں اوراس قدر روشن ہیں جنہیں کسی طرح فراموش نہیں کیا جاسکتا’’علی برادران‘‘ہندوستان کی دوشخصیتوں سے مرکب ایک ایسی حقیقت کانام ہے جس کے زبان پرآتے ہی کرداروعمل اورشجاعت وبسالت کاایک سبق آموز نقشہ آنکھوں کے سامنے آجاتاہے۔
صد حسرت وافسوس کہ ہندوستان اپنے ایک جانباز،بہادر سپاہی اورپرانے خادم سے ہمیشہ کے لیے محروم ہوگیا۔انا ﷲ واناالیہ راجعون۔ حق تعالیٰ مرحوم کی خدمات کوقبول فرمائے اوردامانِ رحمت میں جگہ دے۔
[دسمبر۱۹۳۸ء]

Frequency of Osteopenia and its association with Socio Economic Status among general female population aged 18-60 years Osteopenia and Socio Economic Status

Osteopenia is regarded as the Bone Mineral Density (BMD) which is lower than that of the average value but not as low as Osteoporosis. In Pakistan, Osteoporosis and Osteopenia among women have become one of the most common problems of recent times. Objectives: To find the frequency of osteopenia among females in Faisalabad and its association with SES (Socio Economic Status). Methodology: It was an analytical and cross-sectional study which was conducted at Niaz Medicare Clinic in Faisalabad. The study was completed in 9 months from 18 October 2019 to 18 July 2020. Non probability purposive sampling was done and 323 females were taken for the study. Results: The results demonstrated that 56.3% of the population had Osteopenia. Socio Economic Status had as statistically significant association with Osteopenia (p= 0.041). The results also revealed that the females belonging to middle class and lower class had a higher prevalence of Osteopenia than the females of upper Socio Economic Status. Conclusion: the frequency of Osteopenia was fairly high among females specifically the age group 18-29 years. There was an association found between Osteopenia and Socio Economic status (p =0.041).

Synthesis and Applications of Reactive Triazine Based Uv Protectors for Textile

Human body is very delicate towards harsh environmental variations. High energy UV radiations intentionally or unintentionally interact with our skin and eyes, causing some acute effect such as, photokeratitis, skin aging and also some chronic effects like melanoma skin cancer and DNA damage. Clothing is an important precautionary measure to combat with these damages, but low weight and high porosity of cotton fabric make it unfit for protection against UV rays. Hence, to improve the protection factor of white cotton fabric, computational approach was utilized to search the effective UV absorbers for cotton fabric. The Density Functional Theory (DFT) theory with three functionals was utilized to study the design molecules and results indicated that all the five design molecules (1-5) absorbed inthe UV region of the solar spectrum. These deigned molecules were synthesized via a condensation reaction and their structure confirmation attained through UV/Vis., FTIR and ESI-MS analysis. The theoretically calculated λmax and experimental λmax of all the five UV absorbers were in close agreement. The cottonfabric was treated with designed and synthesized UV absorbers via the exhaust method of dying and its processing conditions optimized by adapting a statistical design “central composite rotatable design” of response surface methodology. The outcomes directed that all the synthesized molecules showed 65-78 % exhaustion and 62-80 % fixation at the acquired optimized conditions. Maximum exhaustion with cotton fabric was presented by 1 and minimum shown by 5. The protection factor of the treated cotton fabric was assessed and results directed that the treated fabric with 1-4 fells in the very good Ultraviolet Protection Factor (UPF) range at 3 % concentration while fabric treated with 5 fells in good range. The UPF increased as follows: 5 <4 < 2<3<1. Whiteness index test results revealed that all the synthesized molecules did not decrease the whiteness of the fabric as much at 3 % concentration, but after exposition to light fastness testing decreased its whiteness little bit as compared to standard. Washing test results indicated that UPF of treated fabric decreased after washing process, with UV absorbers (1-4), it remained in the very good range of UPF after ten washings. While the 5 showed more reduction in UPF value after washing. Degradation studies revealed that synthesized molecules were degradable by safer advance oxidation process technology. Current study opened a new prospect for search of such molecules having more persistent nature after laundry action.