This study aimed to know the realities of lecturer’s attitudes in Libyan universities about the advantages and disadvantages of internet usage, to determine the negative psychological, healthy effects, and consequences of excessive use of internet. Also the study aimed to identify the role of internet network in increasing the level of performance in scientific research in Libyan universities .The researcher followed analytical descriptive approach in order to achieve the objectives of the study, and through the views of the survey sample of university lecturers, a questionnaire has been distributed to them and after that the questionnaire has been statistically analyzed and processed using the (SPSS) program.The study reached to that the Libyan universities lecturer's attitude to the internet was for the purposes of scientific research, communication with their colleagues and their students and to follow the news, especially those that specialize in information technology. Moreover, internet is very effective in developing scientific and social skills, and that, it is the basic necessity in the educational and scientific research process, which are mostly within the university premises.The results also showed that the effects of using the internet on public health and the daily activities was obvious through the confirmation of the respondents that they felt of some diseases as a result of sitting for long periods in front of the Internet.The study concluded by giving a set of recommendations, mainly on the importance of conducting future multiple and comprehensive age groups studies, to explain the widespread of using the Internet and its effects directly in the social life of individuals, because the studies is very limited in this subject, especially from the psychological perspective, to reduce the negative effects of this technology, and take benefits from its positive effects.

A nanostructured zinc oxide (ZnO) with different percentages of argon and oxygen gas flow rate was deposited on a silicon wafer by a simple hot tube thermal evaporation technique. The effect of different percentages of gas flow rate on the crystal structure, surface morphology and optical properties were characterized using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), energy dispersive X-ray (EDX) and RAMAN spectroscopy, respectively. The changes of morphologies from FESEM were significant where the grown ZnO nanostructures show three different shapes which are nanotripods, nanoclusters and nanorods at 5%, 10% and 25% of oxygen gas, respectively. EDX results revealed that Zn and O elements have a major percentage in the sample indicating a composition has high purity of ZnO. XRD patterns displayed the most intense diffraction peak of ZnO at (101), which exhibited a single crystalline hexagonal structure with preferred growth orientation in the c-axis. RAMAN scattering study found that synthesized ZnO shows the high intensity of E2 mode and low intensity of E1 mode attributed to all the samples having good crystal quality containing fewer structural defects. In conclusion, the E15 sample with a 25% oxygen gas flow rate was selected as an optimum result for synthesizing a homogenous surface and high crystallinity of ZnO by using a hot tube thermal evaporation process. This work can enhance the development of ZnO production in various applications.