Copper is a cheaper alternative to various noble metals with a range of potential applications in the field of nanoscience and nanotechnology. However, copper nanoparticles have major limitations, which include rapid oxidation on exposure to air. Therefore, alternative pathways have been developed to synthesize metal nanoparticles in the presence of polymers and surfactants as stabilizers, and to form coatings on the surface of nanoparticles. These surfactants and polymeric ligands are made from petrochemicals which are non- renewable. As fossil resources are limited, finding renewable and biodegradable alternative is promising.The study aimed at preparing, characterizing and evaluating the antibacterial properties of copper nanoparticles. Copper nanoparticles were prepared using gelatin biopolymer, CuSO4.5H2O ions and hydrazine as stabilizer, precursor salt and reducing agent respectively. However, vitamin C and NaOH solution were also employed as an antioxidant and pH adjuster. The synthesized copper nanoparticles were characterized using UV-visible spectroscopy (UV-vis), thermogravimetric analysis (TGA), zeta potential measurements powder, X-ray diffraction (XRD), field emission scanning electron microscope and transmission electron microscope (TEM). The UV-visible absorption spectrum confirms the formation of the CuNPs, which showed maximum absorbance at 583 nm. Results obtained from TEM indicated a decrease in size of particle from a low concentration to high concentration of the supporting materials. The optimum concentration of gelatin was found to be 0.75 wt%. The supporting materials used for this synthesis are biocompatible and the obtained products are stable in air. The synthesized CuNPs display promising antibacterial activities against B. subtilis (B29), S. aureus (S276), S. choleraesuis (ATCC 10708) and E. coli (E266) as gram positive and negative bacteria respectively.
Abstract:- Cyberspace is a new arena for conflict between international powers, especially since the cost of cyber-conflict is less than its traditional warfare counterparts regardless of the nature of the weapons used, whether traditional or non-traditional. Cyber conflict is necessarily based on strategies to deter, attack, and defend. The aim of the cybercrime conflict is to ensure the defensive sufficiency of the state, ensuring its national security and safeguarding its supreme interests. Despite Japan-China relations characterized by convergence and cooperation in post-Cold War economic spheres, Japan continues to retain the growing Chinese influence in East Asia. These variables prompted Japan to announce a hedging strategy due to un
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The research study focused on the need to clarify the relationship between the Websites of Iraqi Newspapers and their roles in covering the internal crises in Iraq. The selection of Iraqi websites for the newspapers Al-Zaman and Al-Sabah was adopted as one of the most important media with a wide audience; and as a model of hot news and continuous coverage of those sites since 2003 so far. As a result, this necessitated the emergence of new types of methods of editing and writing news stories related to Iraq.
Consequently, the enormous and rapidly changing amount of Iraq news, the process of preparing and creating news has become a complex industry
... Show MoreWhen Romanticism had passed since its appearance at the end of the eighteenth century, it seemed that this important intellectual and philosophical development had been absent but not really lost. Romanticism remained in the poems of poets, philosophers and writers even after they had escaped cultural life in general. If it is difficult to itemize all the principles of romance, the apparent is the assertion of individualism and the love of autism with nature and its potential with its mysteries as well as the glorification of emotion, compared to the mental orientation of the writers in the seventeenth century in their classical approach. The language is the most important to what the Romans have proven in their poetry and their artistic wo
... Show MoreBecloud stupefy computing is solid buzzword in the trade. It is timeless in which the advantage seat be leveraged on sound out miserable take into consideration reducing the indict and complication of grant providers. Cloud computing promises to curtail truly and opinionated retrench and approximately specifically concede IT departments focusing on moral projects as contrasted with of misery datacenters contention, It is unconditionally with than on the up internet. Give are sundry consequences of this put together. For the actuality remodeling in turn flock cause get revenge buyer be attractive to. This implies ramble they chaperone custody of servers, they carry out software updates and assistant on the condense user pay
... Show MoreBackground: Shock is a common clinical state, we face chocked patients in causality, surgical and gynecological specialties like stab wounds, road traffic accidents, placenta preavia, placenta accrete, placenta pericreta, ectopic pregnancy, perforated viscus etc. All such patients undergo surgical exploration and majority of them are shifted to ICU to complete monitoring and support. High percent of them they develop acute kidney injury intra and postoperatively and carry high mortality rate because of not so good nursing care in ICU in Iraq.
Objective: to clarify that Furosemide can protect kidney function during shock and reduce ICU admission and mortality rate.
Method: 100 shocked patient were enrolled in t
... Show MoreThe present paper studies the use of adjectives in Shakespeare's Sonnets (4, 5, 6, & 9), which are chosen randomly, on the three levels: grammar, lexis and conversation. It tackles adjectives as a literary term with presenting their forms and functions. The presentation is done according to the themes, their forms and functions in conversation, the adjectives are shown in this paper as for their forms, frequency and meanings in the sonnets and their effects on studying. The analysis is done according to Quirk et al. (1985) and Quirk and Greenbaum (1973). Then, all adjectives have been calculated in the sonnets. The results of the analysis have shown that compound adjectives which occurred (31) are used more than the Suffixation
... Show MoreAn essential element in English as a foreign language (EFL) learning is vocabulary. There is a big emphasis on learning the new words' meaning from the books or inside classrooms. Also, it is a major part of language teaching as well as being fundamental to the learner but there is a big challenge in vocabulary instruction due to the weak confidence by teachers in selecting the suitable practice in teaching vocabulary or they sometimes unable to specify a suitable time for it during the teaching process. The major aim of this study is to investigate the value of posters in vocabulary learning on the 2nd grade students at Halemat Alsaadia High School in Baghdad – Iraq. It hypothesized that there are no statistically significant differences
... Show MoreAdvertisement is a general phenomenon in our everyday life. In most cases, it is established for commercial purposes i.e. it is oriented for certain goals and waiting for results. One form of advertisement is a blurb. In this study, the researcher applies Fonton and Saint-Dizier (2010) and Hymes (1962) models on 23 blurbs. These two models are chosen on consideration of accounting grammatical categories and speech events respectively. The study tends to answer the following question: How do blurb’s writers exploit language to convince the reader to buy the intended book? Therefore, the aim of the study can be stated as analyzing the blurbs according to these two models and finding which category scores higher and serves in ad
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