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Home > Synthesis and Characterization of Iron Oxide Nanoparticles and Their Antifungal Activity Against Aspergillus Flavus and Aspergillus Niger

Synthesis and Characterization of Iron Oxide Nanoparticles and Their Antifungal Activity Against Aspergillus Flavus and Aspergillus Niger

Thesis Info

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External Link

Author

Maryam Sana

Institute

Virtual University of Pakistan

Institute Type

Public

City

Lahore

Province

Punjab

Country

Pakistan

Thesis Completing Year

2018

Thesis Completion Status

Completed

Subject

Software Engineering

Language

English

Link

http://vspace.vu.edu.pk/detail.aspx?id=179

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676720986350

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Antimicrobial substances may be synthetic, semi-synthetic or derived from natural materials. They were recognized as miracle drugs if they had strong effectiveness against harmful microorganisms and were recovered suffering patients as soon as possible. However, they become multiple resistant to pathogens if they were used improperly. This multidrug resistant problem had become a major challenge for global healthcare practitioners. The major cause of this problem was the continuous spreading of drug resistant microbes by different processes. So to overcome such problems some new methods had been developed. These methodologies had replaced conventional drugs to control the multiple drug resistance. Among these technologies one of them is the green synthesis of doxycycline derived iron oxide nanoparticles (Fe3O4NPs). They were synthesized via a simple one-pot method after mixing Fe3O4 and doxycycline in NaOH aqueous solution. Ultra Violet Visible (UV-Vis) Spectroscopy and Infrared (FTIR) spectroscopy were used for characterization of Fe3O4NPs. Doxycycline and synthesized Fe3O4NPs solutions were tested against two fungal pathogens Aspergillus flavus and Aspergillus niger. The data revealed that doxycycline showed activity against Aspergillus flavus and Aspergillus niger. These activities were dose dependent when compared to doxycycline. These findings could pave the way for finding the changing behavior associated with other drugs after capping Fe3O4NPs or other metal nanoparticles and may be used against other resistant strains.
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اُس در سے روپ مانگتے ہیں صبح و شام ؛رنگ


اُس در سے رُوپ مانگتے ہیں صبح و شام ؛ رنگ
جس کے طفیل رنگِ چمن کے تمام رنگ

فطرت کا حسنِ کُل ہے دھنک بن کے سرنگوں
جھکتے ہیں اُنؐ کے در پہ بصد اہتمام رنگ

وہ خاص ہے جو آپؐ سے منسوب ہو گیا
ورنہ تمام رنگ ہیں دنیا کے عام رنگ

حکمِ اذاں تھا بامِ حرم پر بلالؓ کو
دیکھا نہیں نبیؐ نے نسب ، قوم ، نام ، رنگ

دیکھو ذرا دھنک کے سبھی رنگ غور سے
کرتے ہیں سبز رنگ کا بھی احترام رنگ

عرفاںؔ! ادائے صاحبِ شق القمر سے قبل
ماہِ تمام رکھتا تھا اپنے تمام رنگ

دور الإعلام الجديد في تعزيز قضية المصالحة الوطنية: دراسة ميدانية على عينة من الإعلاميين العاملين في قطاع غزة

هدفت الدراسة إلى التعرف على دور الإعلام الجديد في تعزيز قضية المصالحة الوطنية الفلسطينية ومحاولات إنهاء الانقسام، ولتحقيق هدف الدراسة فقط استخدم الباحث منهج الاتصال، والمنهج الوصفي التحليلي القائم على التحليل الكمي من خلال برنامج SPSS الإحصائي والمنهج المسحي. تمثل مجتمع الدراسة في الإعلاميين الفلسطينيين العاملين في قطاع غزة، في حين تمثلت عينة الدراسة في (183) مفردةً. وخلصت الدراسة إلى مجموعة من النتائج، أهمها: أنَّ قضية تفاعل الإعلاميين مع قضية "المصالحة الوطنية" كان كبيراً جداً وبنسبة 78.7%. أوصت الدراسة بتوحيد جهود مستخدمي الإعلام الجديد والانطلاق بوثيقة وطنية من شأنها أن تهدف حشد كافة الجهات لصالح القضايا الوطنية الفلسطينية.

Strategic Cognition of Corporate Social Responsibility: Empirical Evidence from Leading Organizations in a Developing Economy

The purpose of this research is to investigate the notion of CSR strategy-aspractice through managerial cognition of CSR strategy formulation and implementation. In so doing, this research examines the extent to which strategic HR and organizational learning facilitate CSR strategy formulation and implementation to impact organizational performance and reputation. This research has borrowed theoretical lenses of resource-based view (RBV) and sensemaking theory to examine the relevance of managerial cognition with respect to CSR strategy formulation and implementation and to what extent CSR strategy implementation influence organizational performance and reputation. This research has adopted the crosssectional research design and collected data from ‘CSR strategists’ including CEOs, CSR committee and team members, HR managers, CSR authorized personnel (internal) and other top managers. This study has confirmed the cognitive role of managers for CSR strategy formulation and implementation to positively influence organizational performance and reputation. Taking this debate further, this study has examined the relevance of organizational resource namely strategic HR as an important moderator to facilitate the relationships among CSR strategy formulation and implementation, organizational performance and reputation. As per the argument of strategy-as-practice, the process of CSR strategy formulation and implementation is iterative in nature and largely depends on trial and error. This aspect of strategic cognition of CSR is captured by examining the role of organizational learning as a mediator between the association of CSR strategy implementation and organizational performance. This study finds support for the notion of organizational learning as a mediator between strategy implementation and organizational performance thereby emphasizing the role of organizational learning with respect to CSR strategy implementation. This study makes important contributions with respect to strategic management, CSR and management literatures. First, this study has supported the relevance of CSR strategy-as-practice for comprehending managerial cognition of CSR strategy formulation and implementation. Second, this research has demonstrated that CSR strategy formulation and implementation are positive contributors for the better organizational performance and reputation. Third, the pertinence of strategic HR has been established with respect to CSR strategy and thereby CSR strategists can engage HR to play a strategic role for attaining better organizational performance and reputation. Final, the role of organizational learning with respect to strategy implementation and organizational performance has confirmed the iterative nature of CSR strategy implementation.