A nanostructured thin film of NiO with thickness (1250 ± 30) nm was synthesized using the RF-reactive planer magnetron sputtering technique over a cleaned glass substrate. Structural analysis of the nanostructured NiO films was conducted utilising the XRD method, and the films were found to have a polycrystalline nature with a preferred (200) plane reflection at the angle 2θ equal to 43.35ᵒ. The optical measurement for NiO thin films manifested the transmittance, the energy band gap and the absorption coefficient in the ultraviolet and visible regions. A scanning electron microscope (SEM) was used to analyses the surface morphology of the NiO thin film sample. The ability of nanostructured NiO thin films to sense different NO₂ gas concentrations in terms of the time working was studied and reported. The nanostructured NiO film had better sensitivity at the gas ratio of 350 ppm and the operating temperature 150ᵒC.

تم استكشاف المستخلصات النباتية على نطاق واسع كبديل أكثر أمانًا للإجراءات التقليدية لتصنيع الجسيمات النانوية لأكاسيد المعادن. ركز البحث الحالي على تصنيع وتوصيف جزيئات ثاني أكسيد التيتانيوم النانوية (TiO2NPs) باستخدام نهج صديق للبيئة (مستخلص قشر البرتقال) مقارنة بتقنية أخرى (طريقة Sol-Gel) في درجة حرارة الغرفة. تم تحليل جزيئات TiO2 النانوية باستخدام حيود الأشعة السينية (XRD) لتحديد متعدد البلورات مع طور anatase لهيكل رباعي الزوايا ومتوسط ​​حجم بلوري 30.2 نانومتر و 24.2 نانومتر من العينة المحضرة من Sol-gel والطريقة الخضراء على التوالي. تحليل مطيافية فوريرللاشعة تحت الحمراء (FTIR) لمعرفة طبيعة الاواصر وتحديد المجاميع الوظيفية لجسيمات اوكسيد التيتانيوم النانوية. تُظهر الأشعة فوق البنفسجية المرئية للخصائص البصرية (UV-Vis) أن طاقة فجوة النطاق كامت بين 2.85 الكترون- فولت و 3 الكترون- فولت للجسيمات النانوية TiO2 تم تحضيرها باستخدام طرق sol-gel والطريقة الخضراء على التوالي. حدد تحليل FESEM الشكل المورفولوجي لسطح جسيمات TiO2 النانوية بأقطار الجسيمات النانوية في حدود 60-80 نانومتر و 75-85 نانومتر تم تحضيرها عبر طرق sol-gel والطريقة الخضراء على التوالي.

A novel and simple ecofriendly method was described for preparation of carbon active (AC) and AC/ZnO nanocomposite from data (date cores) extract by vaccum fura A novel and simple ecofriendly method was described for preparation of carbon active (AC) and AC/ZnO nanocomposite from data (date cores) extract by vaccum fura

This study investigates the effect of different joint designs and surface treatments on the flexural strength of a 3D-printed resin denture base. Seventy specimens of 3D-printed resin were used in this study, these specimens were grouped according to the joint design into four groups (positive control group, butt-joint group, bevel-joint group, and round-joint group) except the positive control group each one of these groups is subgroup into another three groups according to the surface treatment material into heat-cured monomer (MMA), sandblast, and 3-D printed resin. The specimens were cut in the middle according to the joint shape, and the cut surfaces were treated with heat-cured MMA monomer, sandblast, and 3D-printed resin (as a negative control group). Then a silicone mold was used to prepare the specimens with 3D printed resin, using a light-emitting diode, and post-cured with a light-cured unit box. An Instron testing machine examines all specimens. The bevel-joint group repaired with 3D printed resin (G7) had the highest mean flexural strength (85.0483) MPa and a significant difference from the control group. For fixing a fractured denture base made of 3D-printed resin, the bevel-joint design is the most recommended design of the joint, and the best material for treatment is 3D-printed resin. Then a round-joint with heat-cured monomer and the butt-joint with 3D-printed resin treatment.