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Nonlinear Electrostatic and Electromagnetic Wave Structures in Pair-Ion, Multi-Ion and Dusty Plasmas

Thesis Info

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External Link

Author

Hafeez Ur Rehman, ,

Program

PhD

Institute

Pakistan Institute of Engineering and Applied Sciences

City

Islamabad

Province

Islamabad.

Country

Pakistan

Thesis Completing Year

2017

Thesis Completion Status

Completed

Subject

Physics

Language

English

Link

http://prr.hec.gov.pk/jspui/bitstream/123456789/13452/1/Thesis-Hafeez-25May2017.pdf

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676726761008

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The nonlinear electrostatic and electromagnetic wave structures in pair-ion, multi-ion and dusty plasmas are studied. The reductive perturbation method (RPM) is employed with appropriate boundary conditions to derive the nonlinear partial differential equations to study the dynamics of nonlinear wave structures. The electrostatic nonlinear periodic (cnoidal) waves, solitons and shock wave structures are investigated in unmagnetized pair-ion (fullerene) plasma. The evolution equations for the first and second order nonlinear potentials are derived and steady state cnoidal wave solutions in terms of Jacobian elliptic functions and soliton solution of the Korteweg-de Vries (KdV) equation are presented. The nonlinear pair-ion flux associated with cnoidal waves is also derived. It is found that the small temperature difference between pair-ions appropriates the dispersion property of acoustic waves. Both compressive (hump) and rarefactive (dip) acoustic wave structures are obtained in pair-ion plasma. The conditions for monotonic shock structures for acoustic waves and shock with oscillatory trails at its wave front are also investigated. The dust-ion acoustic (DIA) cnoidal waves and associated nonlinear ion flux in the presence of negatively and positively charged dust particles are also studied. It is found that both compressive and rarefactive nonlinear structures exist when dust particles are negatively charged whereas only compressive structures are obtained for positively charged dust particles. It is also found that nonlinear ion flux is positive for compressive DIA cnoidal waves‟ case and is negative for rarefactive case. The two dimensional propagation of electrostatic ion-acoustic solitons for unmagnetized and magnetized multi-ion plasmas are studied. It is found that both fast and slow ion-acoustic waves can propagate in such a multi-ion plasma provided both ions are considered to be inertial and one of the ions component (light ions) is taken to be warm. The variations in the amplitude and width of the nonlinear slow and fast ion acoustic wave structures with density, temperature and magnetic field are investigated. Furthermore, magnetoacoustic cnoidal waves and solitons in magnetized plasma are also examined and plasma beta effects on nonlinear structures are discussed.
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نواب علی یاور جنگ بہادر

نواب علی یاورجنگ بہادر
گزشتہ ماہ دسمبر میں نواب علی یاورجنگ بہادر گورنر بمبئی کا انتقال ہوگیا۔ ۱۹۴۷؁ء کے بعد حکومت ہند کی طرف سے ان کو بڑے بڑے عہدے ملتے رہے، وہ امریکہ میں ہندوستان کی طرف سے سفیر بناکر بھیجے گئے، مسلم یونیورسٹی علی گڑھ کے وائس چانسلر بنائے گئے، بمبئی کی گورنری کے عہدے پر مامور ہوئے اور اسی ریاست کے گورنر کی حیثیت ہی سے عالم بقا کو سدھارے، اور معلوم نہیں کتنے دوسرے اعزاز ان کو حاصل ہوتے رہے، حکومت ہند کے معتمد ترین حکام میں ان کا شمار ہوتا رہا۔
میں نے ان کو کسی بڑے عہدیدار کی حیثیت سے نہ جانا اور نہ پہچانا، بلکہ ان سے نواب عمادالملک کے نواسے کی حیثیت سے ملتا رہا، نواب عماد الملک دارالمصنفین کی مجلس انتظامیہ کے پہلے صدر تھے، جن کا احسان دارالمصنفین پر بہت بڑا تھا، ان ہی کی مساعی جمیلہ سے علامہ شبلیؒ کی وفات کے بعد ان کا ماہانہ وظیفہ دارالمصنفین کے نام منتقل ہوا، جس سے اس کی تاسیس میں بڑی مدد ملی، وہ دارالمصنفین کے بڑے قدرداں اور سرپرست رہے، جب ان کی وفات ۳؍ جون ۱۹۲۶؁ء کو ہوئی تو استاذی المحترم مولانا سید سلیمان ندویؒ نے معارف کے شذرات میں اپنی غیرمعمولی سوگواری کا اظہار کیا، جس میں ان کے اور بہت سے فضائل اور محاسن کے ساتھ مولانا شبلی، دارالمصنفین اور خود ان سے جو تعلقات رہے، اس کا ذکر بہت ہی خوش عقیدگی سے کیا، جس کے کچھ ٹکڑے یہ ہیں:
’’آخر عمر میں مولانا شبلی مرحوم کی تحریک سے انھوں نے قرآن مجید کا انگریزی میں ترجمہ شروع کیا تھا جو سولہ پاروں تک ضعف بصارت و علالت کی وجہ سے رک گیا، اس ترجمہ میں بالکل بائبل کی زبان اختیار کی ہے‘‘۔
’’مولانا شبلی مرحوم سے ان کا تعلق سرسید کے زمانہ...

اسلام اورہندومت میں احترام انسانیت ایک تقابلی جائزہ Respect for Humanity in Islam and Hinduism A Comparative Review

Every person in the world is respectable because he is a human being. All religions of the world have taught respect for humanity. It will not be wrong if we say that respect is the common heritage of humanity living in the world. Mutual respect is the secret and distinction of the development of nations. How many nations and cultures became enviable simply because they respected each other? In the present era, the dignity of humanity is being trampled everywhere. The murder market is hot everywhere. The standards of human respect are changing, sincerity, truth, human equality, and values ​​are being replaced by deceit, greed, envy, and selfishness. And it is done according to the resources. Man is the best of creation and legitimate respect and honor is his basic right. Therefore, no one can see his self-respect being undermined. That's why it has become very important to bring up topics like respect for humanity and explain the position and status of human beings in the light of religious books so that the respect and dignity of human beings are being trampled underfoot today, people should be made aware of the true status and status of human beings should be informed so that the importance of human blood can be estimated. An attempt will be made in this paper to present a comparative review regarding the respect and reverence that human has for Islam and Hinduism. Keywords: Respect for Humanity, Superior to all creatures, Religion, Islam, Hinduism, Respect, Self-respect

Smart Grids: Channel Modeling for Nb-Plc

Future electricity power network must be restructured to improve its e ciency in order to provide all the consumers with exible, cost e ective, reliable and accessible power delivery. Power Line Communications (PLC) is a vital part of Information and Communication Technologies (ICT) within the smart grid (SG). This thesis presents the analysis and modeling of Low Voltage (LV) transmission lines for Narrowband Power Line Communications (NB-PLC) by incorporating the approach of transmission line (TL) theory and developing its Simulink model followed by their results discussion. The thesis also presents the comprehensive eld measurements based analysis which provides a generalized NB-PLC channel model for LV access network in order to deploy Advanced Metering Infrastruc- ture (AMI) within Lahore, Pakistan. This is therst time, such kind ofeld measurements have been carried out in Pakistan. Selective sites foreld mea- surements that include GaddaStadium, Hafeez Center, Kot Lakhpat, Lahore Cantt, Ghaziabad, Township, Wapda Town, Valencia Town and Defense Housing Authority (Phase-V) were allocated by LESCO which took into account all classi - cations of load types within Lahore city. Theeld measurements of allocated sites were performed in the residential (urban and rural), industrial and commercial electricity consumers for the NB-PLC channel modeling of low voltage overhead transmission lines (TLs). On the basis of extensiveeld measurement results, the average attenuation pro le and transfer functions (TFs) are presented. A Simulink model is developed to validate the results obtained fromeld measurements. The analyses of measured and simulated results illustrate a close agreement of channel TFs. This research work proposes an improved, more e cient, and more accurate NB-PLC channel model especially for South Asian countries.