Search or add a thesis

Advanced Search (Beta)
Home > Numerical Study of Heat and Mass Transfer in Non-Newtonian Fluids

Numerical Study of Heat and Mass Transfer in Non-Newtonian Fluids

Thesis Info

Author

Madiha Khaliq

Supervisor

Malik Muhammad Yousaf

Department

Department of Mathematics, QAU

Program

MA

Institute

Quaid-i-Azam University

Institute Type

Public

City

Islamabad

Province

Islamabad

Country

Pakistan

Thesis Completing Year

2016

Thesis Completion Status

Completed

Page

60P

Subject

Mathematics

Language

English

Other

Call No: DISS / M.PHIL / MAT/ 1406

Added

2021-02-17 19:49:13

Modified

2023-01-06 19:20:37

ARI ID

1676716766770

Similar


Loading...
Loading...

Similar Books

Loading...

Similar Chapters

Loading...

Similar News

Loading...

Similar Articles

Loading...

Similar Article Headings

Loading...

المبحث الثاني: مأساۃ الحياۃ وأغنية للإنسان

المبحث الثاني: مأساۃ الحياۃ وأغنية للإنسان
"مطولة شعرية"
تکتب الشاعرۃ العراقیۃ المشھورۃ " نازك الملائکۃ" في دیوانھا المعروف "دیوان نازک الملائکۃ" أنھا تشرح الظروف الزمنیۃ والنفسیۃ والفکریۃ التي مرت بھا خلال کتابۃ مطولتھا الشعریۃ ’’مأساۃ الحیاۃ وأغنیۃ للإنسان‘‘ عبر عشرین عاماً من سنۃ 1945م إلی 1965م، وتقول : ’’یضم الأثر الشعري الذی أضعہ بین یدي القاریء في ھذا الکتاب ثلاث صور شعریۃ لقصیدۃ واحدۃ أولھا قد نظم بین سنۃ 1945م و 1946م وثانیھا قد نظم سنۃ 1950م وثالثھا متأخر التاریخ حتی 1965م، ویمکن أن تعد کل قصیدۃ من ھذہ القصائد الطویلۃ مستقلۃ عن الأخریین، لو لا أنني قد نسخت بعض الأبیات أحیاناً فنقلتھا من قصیدۃ إلی أخری علی اعتبار أنھا ما زالت ترضي ذوقي رغم مرور السنین‘‘۔
وتقول إنھا نظمت القصیدۃ الأولی عام 1945م وکان عمرھا إذ ذاک اثنین وعشرین عاماً۔ وعندما بدأت في نظم ھذہ المطولۃ فإن دیوانھا الأول (عاشقۃ اللیل) لم یظھر إلی الوجود بعد۔ وأنھا کانت تکثر من قراء ۃ الشعر الإنکلیزي فأعجبت بالمطولات الشعریۃ التي نظمھا الشعراء وأرادت أن یکون في الوطن العربي مطولات مثلھم، فبدأت في نظم القصیدۃ وسمتھا "مأساۃ الحیاۃ" وھذہ القصیدۃ دلیل علی تشاؤمھا المطلق، وأنھا کانت تشعر بأن الحیاۃ کلھا ألم وإبھام وتعقید۔ وتقول: ’’وقد اتخذت للقصیدۃ شعاراً یکشف عن فلسفتي فیھا ھو ھذہ الکلمات للفیلسوف الألماني المتشائم ’’شوبنھاور‘‘: "لست أدري لما ذا نرفع الستار عن حیاۃ جدیدۃ کلما أسدل علی ھزیمۃ وموت۔ لست أدري لماذا نخدع أنفسنا بھذہ الزوبعۃ التي تثور حول لا شيء؟ حتّام نصبر علی ھذا الألم الذي لا ینتھي؟ متی نتدرع بالشجاعۃ الکافیۃ فنعترف بأن حب الحیاۃ أکذوبۃ وأن أعظم نعیم للناس جمیعاً ھو الموت؟"۔
یتضح من ذلک أن الشاعرۃ کانت متشائمۃ مثل الشاعر الانکلیزي شوبنھاور وربما تشاؤمھا یفوق تشاؤم شوبنھا ور لأنھا ھي بنفسھا تعترف بھذا الشيء فتقول:’’والواقع أن تشاؤمي قد فاق تشاؤم شوبنھاور نفسہ، لأنہ۔ کما یبدو۔کان یعتقد أن الموت نعیم لأنہ...

حضور اکرمﷺ بطور پیمبر امن و سلامتی

Peace can be defined as a state of mind of individuals and groups where everyone lives without apprehension, discomfort or fear of the other. Justice gives birth to peace; when there is justice, there is a sense of security among people. A peacemaker is one who mitigates conflicts and nurtures good will and brings about a sustainable balance to the society. Indeed, Prophet Muhammad's life was an example of living the life of a peace maker.  The absolute character of Holy Prophetﷺ is impeccable in all characteristics and bestows an outright guidance in every step of life. It is an exemplary and pure fountain of love and mercy. His mercy is restricted not only to human beings but is also for animals and other creatures too. In this Paper will try to Discus about the character of Muhammadﷺ as Peace and Security maker, nothing is new, you have heard them time and again, but I am asking you to look at the deeper dimension embedded into these actions in creating peace for yourselves and the people who surround you. It is essentially expanding and sharing with you what Rahmatul Aalameen, a mercy to a mankind means.

Enhancing Heat Tolerance in Bt Cotton Gossypium Hirsutum L. Through Different Management Practices

High temperature stress is the problem in many parts of the world, especially under semi-arid regions of world affecting vegetative and reproductive stages of cotton crop. The experiments were conducted in field (2012 and 2013) of Department of Agronomy, University of Agriculture Faisalabad as well as in glasshouse (2012) of Department of Plant Breeding and Genetics, University of Agriculture Faisalabad, Pakistan to check the effects of foliar spray of growth regulators (hydrogen peroxide-H2O2, salicylic acid-SA, moringa leaf extract-MLE and ascorbic acid-ASA) and nutrients (potassium-K, zinc-Zn and boron-B) at three reproductive stages (squaring, flowering and boll formation) of cotton crop. Each reproductive stage under field conditions faced optimal, sub and supra-optimal temperatures while under glass house conditions optimal, sub and supra-optimal thermal regimes were provided (32/20°C ± 2°C, 38/24°C ± 2°C and 45/30°C ± 2°C). The effects of growth regulators and nutrients spray were seen for different antioxidants, ROS, MDA contents; gas exchange components; water relations, chlorophyll contents, membrane leakage, phenogical components, yield and quality attributes of cotton crop under all thermal regimes. Under both, field and glass house conditions, and for all reproductive stages (squaring, flowering and boll formation), hydrogen peroxide (H2O2 30 ppm) produced higher antioxidants, lower ROS and MDA contents under all thermal regimes followed by MLE and ASA. Hydrogen peroxide also induced higher water relation and gas exchange components; lower membrane leakage and higher chlorophyll contents under all thermal regimes while both MLE (30 times diluted) and ASA (70 ppm) showed comparable results only under high temperature regimes after H2O2 over the control (water spray). Salicylic acid (50 ppm) increased antioxidants only under high temperature regimes after MLE and ASA than the control. Both salicylic acid and hydrogen peroxide reduced different phenological components only under sowing dates that took higher days to accumulate the required growing degree days (GDD) while both reduced insect infected and unopened bolls than control and other regulators. Seed cotton yield, the related components and the quality attributes were increased by H2O2 while MLE and ASA stood at par with it only under high temperature sowing dates. Foliar spray of potassium (1.5%) or zinc (0.2%) stimulated higher antioxidants and lower ROS under all thermal regimes at all three reproductive stages in both field of studies followed by boron (0.1%) over the water spray (control). Foliar spray of either K or Zn showed higher water relations, lower membrane leakage, higher chlorophyll contents and gas exchange components only under high temperature regimes followed by B over the control. Both K and Zn induced earliness only in sowing dates which took more days for different phenological stages than B and control. Foliar spray of K or Zn showed higher yield related components and fiber quality attributes only under high temperature sowing dates. The results concluded that foliar spray of growth regulators (H2O2 followed by ASA and MLE) and nutrients (K and Zn) under heat stress conditions at any reproductive stage of cotton crop are helpful for mitigating the adverse effects and might have great importance under severe heat spells like those occurring in Pakistan.