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Electromagnetic ion acoustic perturbations in spatially varying plasma

Thesis Info

Author

Misbah Azad

Supervisor

Ali Ahmed

Department

Department of Physics

Program

BS

Institute

International Islamic University

Institute Type

Public

City

Islamabad

Province

Islamabad

Country

Pakistan

Thesis Completing Year

2016

Thesis Completion Status

Completed

Page

53

Subject

Physics

Language

English

Other

BS 534 MIE

Added

2021-02-17 19:49:13

Modified

2023-01-06 19:20:37

ARI ID

1676722052253

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كلمة المُراجع (التقريظ)

كلمة المُراجع (التقريظ)

بسم الله الرحمن الرحيم

الحمد لله رب العالمين، والصلاة والسلام على أشرف المرسلين، سيدنا محمد وعلى آله وأصحابه أجمعين.

وبعد

فإن للغة العربية سحرًا لا يعرفه إلا من سبر أغوارها من أهلها أو من غير أهلها، وحب اللغة العربية متجذر في قلوب المسلمين، عربًا وغير عرب، بل إن شئت الحق؛ يهيم بها المسلمون من غير العرب ممن أنعم الله عليهم بمعرفتها قراءة وكتابة وتحدثًا، وقد يندهش العرب من هذا الكلام، مستبعدين أن يكون هناك من ينافسهم في حب لغتهم، ولكني سأفاجئك بقولي إن من المسليمن غير العرب من بَذَّ العرب أنفسهم وتفوق عليهم في معرفة اللغة العربية ودقائقها، والأمثلة على هذا كثيرة، وخاصة في باكستان التي يتميز شعبها بحب اللغة العربية تبعًا لحبهم لدينهم، ولنبيهم صلى الله عليه وسلم؛ ولنا أن نذكر العالم الجليل الأستاذ الدكتور عبد العزيز الميمني رحمه الله، والأستاذ الدكتور ظهور أحمد أظهر، والأستاذ الدكتور خورشيد رضوي، والأستاذ الدكتور سليم طارق حفظهم الله؛ فهؤلاء هم النبراس في اللغة العربية وعلومها في شبه القارة الباكستانية الهندية في عصرنا الحاضر، وبهم تستنير الأجيال، وتسير على خطاهم، والباحثة الباكستانية الدكتورة مكية نبي بخش من الجيل الجديد الذي تتلمذ على يد واحد من أولئكم العلماء الأفذاذ؛ أقصد الأستاذ الدكتور سليم طارق خان أستاذ اللغة العربية بالجامعة الإسلامية ببهاولبور؛ فنهلت من ينابيع علمه ما جعلها تجيد اللغة العربية إجادة يغبطها عليها أهلها، رغم أنها عاشت بين أهل العربية زمنًا، إلا أن الأساس عندها يرجع إلى هذا الأستاذ العظيم، وإليه يعود الفضل في توجيهها التوجيه الصحيح لخدمة اللغتين العربية والأردية؛ فأعدت رسالتها للدكتوراة دراسة مقارنة بين الشاعرة العربية العراقية الكبيرة "نازك الملائكة" والشاعرة الباكستانية الأردية الكبيرة "بروين شاكر"، وبعد أن مَنَّ الله عليها، وأتمت أطروحتها، وحصلت بها على درجة الدكتوراة من الجامعة الإسلامية ببهاولبور، قررت أن تنشرها في شكل كتاب بعد تنقيحها ومراجعتها، لتعم...

تدوین و مشتملات ارتھ شاستر

This paper describes that the Kautiliya Athashastra is the oldest and most exhaustive   treatise on the governance and administration of a state. Starting with the bringing up and education of the young prince, it proceeds to the appointment of ministers and the organization and functioning of various state departments, including the setting up of a secret service. It then sets forth a code of civil and criminal law. In the matter of foreign relations, it puts before the ruler the idea of a "Vijigisu" (would be world conqueror) and discusses in great detail the various situations he may have to face in his dealing with foreign states, whether  friendly or inimical, and points out how he should conduct himself in every case so as to achieve his goal.

Assessing Carbon Sequestration Potential of Tillage and Nutrient Management in Rice-Wheat Cropping System Using Modeling Technique

Among major cropping systems, rice–wheat system is questioned due to its high contribution in carbon (C) fluxes. To quantify the impact of nutrient management approach on harvestable C-biomass, crop-derived C, soil organic C and N-sequestration, growth, development and yield of rice and wheat, a 2-year field study was executed under conventional tillage (CT) and reduced tillage (RT) in rice-wheat system of Punjab-Pakistan. The fertilization management treatments, including control (T1); treatment 2 (T2, NPK) recommended NPK; treatments 3 (T3, animal manure (M; 20.0 Mg ha-1); treatment 4 (T4, 100% crop residue incorporation; treatment 5 (T5, NPKM5/5) 50% NPK and 50% M; treatment 6 (T6, NPKS5/5) 50% NPK and 50% crop residue; treatment 7 (T7, 0.25NPKM + 0.50S) 25% NPK with 25% M and 50% crop residue and treatment 8 (T8, 0.25NPKS + 0.50M), 25% NPK with 25% crop residue and 50% M were randomly allocated in a split plot design under CT and RT. The results show that organo-mineral treatments (T5-T8) increased harvestable C-biomass by 12.56% and 53.31% relative to the sole organo-mineral (T2-T4) and control (T1) treatments, respectively, under both tillage systems. Further, organo-mineral treatments resulted higher crop-derive C-inputs by 38.27% and 60.72% over control treatment. Additionally, organo-mineral fertilizers significantly reduced the soil bulk density (BD), leading more N-sequestration. The organo-mineral treatments enhanced total dry matter (TDM) of wheat by 30.99 to 53.67%, mean crop growth rate (MCGR) by 30.07 to 65.07%, leaf area index (LAI) by 43.78 to 57.28%, productive tillers by 43.04 to 51.53% and grain yield by 22.52 to 62.31% relative to control under both tillage methods. In rice, organo-mineral treatments enhanced TDM by 35.90 to 54.83%, MCGR by 38.11 to 53.02%, LAI by 21.14 to 51.68% and productive tillers by 11.11 to 32.44% as compared to control. Subsequently, DNDC model successfully captured the trends in SOC contents which is indicated by several statistical indexes such as -0.75 < ME < 0.42, 0.68 g kg−1 < RMSE < 1.06 g kg−1, 0.70 < d < 0.87, 10.94% < nRMSE < 16.26, 4.82 < MPD < 5.77, and 0.31 < MAE < 0.34. In conclusion, an appropriate combination of inorganic NPK, crop stubbles and animal manure could be beneficial to stimulate C-stocks and N-sequestration which directly will alter the soil physical and biological properties for better crop growth and development. Further, DNDC have identified that combine use of inorganic and organic amendments may be beneficial to sequester more SOC sequestration. A greenhouse study was conducted to assess the simultaneous effects of BC and nitrogen (N) fertilization to reduce N2O and CH4 emissions along with higher biomass accumulation in rice under controlled conditions. Nine treatment combinations of BC amendments at 0, 2 and 4% by weight (weight of BC/weight of soil) mixed into 3500 g of unsterile soil with 0, 70 and 140 kg N ha-1 were used in growing rice. Results show that BC-only treatments enhanced the volumetric water contents (VWC) by 9-14% and soil pH by 5-7% coupled with higher daily and cumulative seasonal CH4-C fluxes by 85-95% and 48-51%, respectively, compared with control treatment. Subsequently, the DNDC model also simulated the CH4 emissions trends well in agreement with the measurements. Thus, this study suggests that the use of BC amendment at 2% with 140 kg N ha-1 may be a beneficial strategy to reduce the net GHG emissions from paddy rice in an Alfisol. However, the DNDC model must be calibrated and validated by intensively measurements of additional soil variables including dissolved organic carbon (DOC) and microbial composition after application of different types of biochar.