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Bioremoval Capacity of Selected Heavy Metals by Locally Isolated Microalgal Species

Thesis Info

Author

Erum Ikram, Muhammad Aniq Arif

Supervisor

Asia Arif

Department

Department of Biosciences

Program

BBS

Institute

COMSATS University Islamabad

Institute Type

Public

City

Islamabad

Province

Islamabad

Country

Pakistan

Thesis Completing Year

2017

Thesis Completion Status

Completed

Subject

Biosciences

Language

English

Added

2021-02-17 19:49:13

Modified

2023-01-06 19:20:37

ARI ID

1676719657464

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8. Al-Anfal/The Spoils of War

8. Al-Anfal/The Spoils of War

I/We begin by the Blessed Name of Allah

The Immensely Merciful to all, The Infinitely Compassionate to everyone.

08:01
O The Prophet!
They ask you about the spoils of war to whom do they belong?
Tell them:
‘The spoils of war belong to Allah and The Messenger Muhammad.
So be mindful of Allah in reverence, awe, and piety, and
in case of disputes resolve them amicably and maintain good relations among yourselves.
And obey Allah and HIS Messenger, if you are true believers.’
08:02
Indeed, the true believers are those whose hearts fill up with awe whenever they are
reminded of Allah,
and whose faith is further strengthened whenever HIS Messages are recited out to them,
and who put their trust in their Rabb - The Lord to take care of their affairs.
08:03
It is they who establish the Salat/Prayers,
and spend in the Cause of Allah of what WE provide for them.
08:04
It is they – they are the true believers.
For them are high ranks of honor and dignity with their Rabb - The Lord,
as well as forgiveness of sinful trespasses, and
generous provisions in Paradise.
08:05
A similar situation of dispute arose when your Rabb - The Lord caused you to leave your home to fight for the Cause of Truth,
although a group of the believers were, in fact, unwilling to do it,
08:06
…. arguing with you about the truth even after it had become quite clear
as if they were being driven to their own death with their eyes wide open.
08:07
And remember even when Allah was promising you that one of the two enemy groups will be yours,

although...

Return Migration to Pakistan during COVID19 Pandemic: Unmaking the Challenges

In order to contain the spread of corona virus (COVID-19) disease, strict border closure measures have been taken globally. Migrants and refugees are affected across the globe due to such measures. Amid the COVID-19 pandemic, the economic recession escalated across the globe which is expected to have serious implications for the migrant workers and laborers. Potohar region was selected to explore implications of return migration from abroad, but the fieldwork halted immediately due to the pandemic outbreak. Since the data on Pakistani migrants is dispersed and scant, it was nearly impossible to stick to the locale for returnees. Therefore, the data for this study was collected qualitatively using exploratory methodology. In-depth interviews were conducted using interview guide as a tool of research. The paper is based on analysis of the narratives based on the experiences of the returnees especially. It sheds light on the state of the stranded Pakistani migrants who have been returning or awaiting repatriation due to layoffs. It delves into long-run and short-run challenges due to return migration, in Pakistan which highly depends on remittances from abroad. Challenges created by sudden end to remittances, entrepreneurial setups and returnees’ reintegration in the society need immediate attention. It is recommended that the state should support and monitor the migrants living abroad, ease out issues in repatriation of the laid off workers, pave way for investment, offer insurance plans, reduce reliance on remittance flow and engage them in Public Private Partnerships for sustainable reintegration.

Screening Potentials and Wave Excitations in Dusty Plasmas

The primary orientation of this thesis is to explore some interesting features of static and dynamic potentials in magnetized quantum plasmas including the dust dynamics in the presence of wave field associated with different modes. These modes may be electrostatic in nature. These investigations find significance applications in small and large scale plasmas. This thesis contains some new extensions to dust-lower-hybrid modes in quantum dusty plasmas. In chapter II, the effect of strong ambient static magnetic field on Shukla-Nambu- Salimullah (SNS) potential in a dusty quantum magnetoplasma has been investigated using quantum hydrodynamic (QHD) model. The potential is significantly modified by quantum statistical effects, density inhomogeneity and dust polarization drift effect. It is found that dust polarization drift effect pre-dominates the ion polarization drift effect in high magnetic field environments. The potential around a static test charge has been plotted for different parameters in high density quantum magnetoplasmas. We have seen that for increasing values of number density and inhomogeneity scale length, the modified SNS potential decreased due to the decrease in the Fermi Debye length. Subsequently using the quantum hydrodynamic model for quantum magnetoplasmas, the Shukla–Nambu–Salimullah shielding potential and the far-field dynamical wake potential in a quantum dusty plasma with a nonuniform density and static magnetic field have been investigated in chapter III. The short-range screening potential and the long- range oscillatory wake potential are found to be significantly affected by the nonuniformities in the density and the static magnetic field. It is seen that SNS and oscillatory wake potentials increases with the increase of external magnetic field and for increasing values of number density and inhomogeneity scale length, the amplitude and effective length of wake potential decreased. The far-field oscillatory wake-field potential can explain attraction among the same polarity charges leading to the possible ordered structures or coagulation in the inhomogeneous quantum dusty magnetoplasma. Finally in chapter IV, the dispersion relation of the dust-lower-hybrid wave has been derived using the quantum hydrodynamic model of plasmas in an ultracold Fermi dusty plasma in the presence of a uniform external magnetic field. The dust dynamics, electron Fermi temperature and the quantum correction give rise to significant effects on the dust-lower-hybrid wave of the magnetized quantum dusty plasmas. Numerically it is found that frequency of the quantum dust-lower-hybrid wave increases with increasing wavenumber and with the increase of magnetic field at the small angle of propagation. The summary and conclusions are in the end of the thesis.