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TUNING THE OPTICAL PROPERTIES OF MULTIWALL CARBON NANOTUBE THIN FILMS BY N+ ION BEAMS IRRADIATION
AHMAD ISHAQ,LONG YAN,G. HUSNAIN,BO LU,MAHMOOD ARSHAD,ALAMGIR KHALID 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2011 NANO Vol.6 No.4
Measurements of optical transmission in the visible spectral range of N+ irradiated thin films of multiwall carbon nanotubes (MWCNTs) at various doses prepared by a vacuum filtration method are reported. An increase in optical transmission was observed corresponding to increase in N+ ion doses. Changes in Raman spectra at different ions doses ranging from 5 × 1015 ions/cm2 to 1 × 1017 ions/cm2 indicate that the structure of graphene evolves from a highly ordered layer to a disordered domains. These structural changes result in a dramatic increase in the optical transmission. Additionally, the increase of optical transmission of irradiated MWCNTs thin film as a function of electrical conductivity at various doses is also discussed. The optical transmission increases in irradiated MWCNT thin films is found to be a function of defects density in MWCNTs.
Saira Ishaq,Habib Ahmad Rathore,Syed Mubashar Sabir,Muhammad Saeed Maroof 한국식품과학회 2015 Food Science and Biotechnology Vol.24 No.2
Elaeagnus umbellata is a plant that grows in the hilly areas of Pakistan. Free radical scavenging activities and anti-lipid peroxidative properties of hot water, methanol, n-hexane, and acetone extracts of E. umbellata berries were evaluated. Extracts showed inhibition against thiobarbituric acid reactive species (TBARS) induced using the pro-oxidants iron (10 μM FeSO4) and sodium nitroprusside (5 μM) in brain and liver homogenates of mice. Extracts also showed metal chelating activities of IC50 (extract concentration that causes 50% scavenging)=40-43 μg/mL and DPPH radical scavenging activities of IC50=45.4- 49 μg/mL. HPLC analysis revealed the presence of gallic, vanillic, coumaric, ferulic, sinapic, and caffeic acids in berries. The fruit of E. umbellata is a potential source of antioxidants with therapeutic importance.
Phatak, Sohail Ahmad,Chaudhary, Muhammad Azam Ishaq,Khattak, Muhammad Sajid,Naveed, Anjum International Journal of Computer ScienceNetwork S 2022 International journal of computer science and netw Vol.22 No.3
Ombudsmanship is the framework to provide the speedy administrative justice to poor man which is originated in Sweden in the 19<sup>th</sup> Century and the modus operandi with modernized arrangement of public grievance redressal. Pakistan has thirteen different Ombudsman Institutions at both Federal and Provincial level with limited public accessibility. This paper presents a collaboration framework for extending the outreach of Ombudsmanship at proverbial doorstep of complainants. This framework has three main components as collaborative arrangements, Proceedings and Resolution of the complaints that increased the public trust. A pilot project titles Swift Complaint Resolution (SCR) was constructed and executed by Federal Ombudsman Secretariat to materialize the concept of speedy redressal of complaints. The SCR project first affirmed the strength of the components of the framework. The concept of SCR was first presented in the Federal Advisory committee for Administrative Justice, which comprised of highest level of the Parliamentarians, Public Officials, NGOs and Civil Society where presented guidelines to be adopted for the free and speedy redressal of grievances at proverbial doorsteps in tehsils and district headquarters ultimately to the extended to the union councils. In SCR, the complaints were decided within 25 days even though the Law permitted 60 days that is itself a record in any judicial /quasi-judicial forum.