Search from the Journals, Articles, and Headings
Advanced Search (Beta)
Loading...
Loading...
Loading...
Loading...
Loading...
Loading...

غزل

 

ہو گیا گر کام پھر دشوار تو
ہم تو جی لیں گے اکیلے ہی مگر
ہم تو کر لیں گے سرِ تسلیم خم
سب اشارے ہیں ہماری ہی طرف
ہار مانیں گے نہ دشمن سے کبھی
چھُوٹ کر زنداں سے آ ہی جائیں گے
امن کا امکان کیا ہے وارثی
آپ ہی ٹھہرے جو ذمہ دار تو
تیرا جینا ہو گیا دشوار تو
ان کی جانب سے ہوا انکار تو
فیصلہ الٹا ہوا سرکار تو
دوستوں نے کر دیا گر وار تو
لے گئے اپنے ہی سوئے دار تو
فیصلے کرنے لگے تلوار تو

Media Framing of the ‘War on Terror’: The Case of Urdu-Language Elite Press During the Dictatorial Regime in Pakistan

This research is focused on press-government relationship on the issue of ‘War on Terrorism’ (WoT) during the dictatorial regime led by the then military ruler General Pervez Musharraf who remained in power till 2008 in the Islamic Republic of Pakistan. Global war against terrorism, generally known as ‘war on terror’ was actually started by the United States of America in the aftermath of 9/11 episode in 2001. Pakistan, on US demand, had not only become an important ally of the grand alliance formed under the umbrella of the United States but had also adopted the role of a frontline state just to fight the war against terrorism (WoT) alongside the war allies. Generally mass media have the potential to influence public opinion and help reshape the states’ policies on different issues. Likewise, mass media of Pakistan also took an active part in the war either by going alongside the then dictatorial government or against it. This research is based on examining the way the Urdu language elite press, the most popular mass media of Pakistan, covered the dictatorial regime of President General Pervez Musharraf with regard to its policy on the issue of ‘WoT’. Main purpose of this study is to know the nature of relationship between the Urdu-language elite press and the dictatorial government of Gen Musharraf in Pakistan with regard to their policy positions on ‘WoT’ from 2001 to 2008. Three newspapers including daily Jang, daily Nawa-I-Waqt, and daily Pakistan, considered to be representatives of the Urdu-language elite press of Pakistan, were selected for this study. The method used to measure the phenomenon is called framing where contents of the selected dailies were measured both quantitatively and qualitatively. Data were collected through systematic sampling method, while coding sheet was used as a tool for data collection. Unsigned main editorials of the selected newspapers were analyzed to examine the nature of relationship existed between the two entities i.e. The Urdu-language elite press, and the dictatorial government of Gen Pervez Musharraf, on the issue of ‘WoT’ in Pakistan. The results revealed that the selected elite newspapers, in general, remained critical to the dictatorial regime on the issue of ‘WoT’. The findings also revealed that daily Nawa-I-Waqt remained highly critical to the government as compared to its other contemporaries i.e. Daily Jang, and daily Pakistan. It was also revealed that the Urdu-language elite press while framing the ‘War on Terror’ remained somewhat supportive and rarely neutral to the dictatorial regime on it policy on ‘WoT’.

Synthesis, Band Gap Tuning, Characterization and Photosensitization of Tio 2 Nanoparticles for Application in Hybrid Solar Cells

In this work an endeavor was made to fabricate hybrid bulk heterojunctions solar cells based on doped and un-doped TiO 2 nanoparticles blended with the well-known organic polymer Poly(3-hexyl thiophene) and co-grafted with porphyrin and carminic acid. Charge transfer complex formation between the donor and acceptor dyes helped in increasing the photo induced generated current. To achieve this end sol-gel method was employed to synthesize anatase titania, which was characterized by electronic absorption spectroscopy, X-ray diffraction analysis (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The first part of the research deals with the band gap modulation of TiO 2 by doping it with selected transition metals (2-8% Cu, Ni and Cr). This was aimed to study the effect of tuning the band gap of TiO 2 on the efficiency of the fabricated solar cells by extending the absorption spectrum of titania to the visible region. The doped materials were also characterized using optical and morphological techniques to investigate their properties. Direct band gap of TiO 2 (3.9 eV) was found to be significantly reduced to 2.94, 3.40 and 3.60 eV for 2% Cu, 4% Ni and 2% Cr-doped materials respectively. Higher dopant concentrations induced the widening of the band gap according to the Burstein-Moss phenomenon. XPS results confirmed the substitution of Ti 4+ ions by the doped transition metal ions. Bulk heterojunctions solar cells were fabricated using un- doped and doped titania in combination with P3HT in order to investigate the effect of doping on the performance of the device. An enhancement of the photo-generated current was observed by using doped titania. This increase could be ascribed to the tuning of the band gap of titania to absorb effectively in the visible region. Maximum photocurrent was obtained by employing Cu-doped TiO 2 . However the value of FF was reduced owing to the low V oc values. The second portion of this research is dedicated to investigate the effect of photosensitization of TiO 2 and M-TiO 2 (M= Cu, Ni, Cr) on the efficiency of solar cells. A metallated phthalocyanine (Ni-Pc) was used to functionalize TiO 2 nano- particles in an attempt to extend the absorption spectrum of titania to visible region. The grafted materials were optically analyzed using electronic absorption, fluorescence IVemission and FT-IR spectroscopy to study the successful chemisorption of the dye on TiO 2 surface. These dye sensitized TiO 2 and M-TiO 2 were employed to fabricate solid state solar cells using P3HT. I-V measurements were performed to see the effect of dye concentration on the performance of solar cells. The plots showed that maximum I sc was achieved using 15 μM of Ni-Pc and the efficiency of the device was enhanced 3 times as compared to pristine titania blended with P3HT. The doped grafted titania using 15 μM of Ni-Pc showed higher I sc compared to un-doped grafted materials but the FF was reduced. This lowered the overall efficiency. The effect of co-grafting was also investigated by preparing photo-active nano-hybrid material consisting of titania nanoparticles, carminic acid and sulphonic acid functionalized porphyrin. Adsorption of free base porphyrin on TiO 2 resulted in its metallation which was evidenced by the disappearance of two out of four Q-bands in the UV-visible spectra of porphyrin. The adsorption of carminic acid resulted in the formation of charge transfer complex with titania nanoparticles. This was confirmed by the electronic absorption and fluorescence emission spectroscopies. Energy level diagram showed that the interaction among the constituents of the nano hybrid assembly permitted the flow of electron in a cascade manner from carminic acid to TiO 2 .This also allowed direct flow of electrons either from carminic acid or porphyrin towards titania. The material was used as an active blend in hybrid bulk hetero-junction solar cells. Co- functionalized (co-grafted) TiO 2 based devices were found three times more efficient than the reference device but morphology of the device proved a major setback.
Asian Research Index Whatsapp Chanel
Asian Research Index Whatsapp Chanel

Join our Whatsapp Channel to get regular updates.