ABSTRACT

Water sources in Al-Jabal Al-Gharbi area are very limited and need to be studied for use either as drinking water or human activities. Therefore, several physical and chemical parameters of water sources in Al-Jabal Al-Gharbi region located in Northwest of Libya were investigated. For untreated water three sources were studied including groundwater wells, rain water, and Man-Made River (MMR). However, for drinking water packed and unpacked treated commercial water were investigated. The examined properties were pH, conductivity, salinity, turbidity, total dissolved solids (TDS), chlorine, nitrates (NO- ), nitrites, sulfate, phosphate, iron, and cupper. The results showed that the groundwater and MMR water had high TDS concentrations between 1115 and 4090 mg/L leading to increase the total hardness in these samples. Most of the treated waters had very low of TDS concentrations causing loss the useful salts for consumers . However, the rain water samples had optimum values of TDS and other parameters. Regarding NO- all samples were within the limitation and in the range of 0.02 to 15 mg/L. Furthermore, all metal ions examined in this work such as iron and Cupper were within the WHO guidelines.

Even though abstracts are short, they require a specific type and formal structure that is accepted by academic discourse communities (San & Tan, 2012). They are governed by a discipline's own conventions i.e. a series of moves that characterize the flow of the discourse and linguistic features. This study aims to identify the rhetorical moves and metadiscourse markers that are deployed in the abstracts of projects that were written by undergraduate students in the English department at the faculty of Arts/Gharyan University. The data consisted of 30 abstracts. Hyland's models (2000; 2005) were adopted in this study. The first model (2000) was used to analyze the rhetorical moves. The second one (2005) was employed to analyze the metadiscourse. The findings revealed that most of the abstracts did not consist of the five rhetorical moves. The introduction and purpose moves were prominent, while the method, result, conclusion, and structure (new move) moves were not prominent. The absence of some of the rhetorical moves in the English abstracts of undergraduate projects might make the project abstract unable to achieve its communicative purposes and will lead to difficulty for readers to understand the content of the abstract. For metadiscourse, the findings showed that interactive metadiscourse was deployed more than interactional metadiscourse. Among these two categories, transitions, frame markers, and endophoric were used more frequently.