مقرر العمارة القديمة في الجزيرة العربية ( 252 أثر)

وصيف مقرر العمارة القديمة في الجزيرة العربية
رقم المقرر ورمزه 252 أثر
 
  وصفه :
التعريف بالخصائص المعمارية في الجزيرة العربية منذ بدايات نشوء المدن حتى ظهور الإسلام مع إبراز العناصر الفنية , والطرز المحلية والمؤثرات التي أثرت في ذلك ووظائف العمارة المختلفة .
أهدافه :

ملحقات المادة الدراسية

Facile Synthesis and Electroactivity of 3-D Hierarchically Superstructured Cobalt Orthophosphate for Lithium-ion Batteries

The synthesis of materials with ordered or self-assembled superstructures provides opportunities to tune the material's physical and chemical properties for energy storage device applications. Here, we report the synthesis of a three-dimensional (3-D) hierarchical cobalt orthophosphate (Co3(PO4)2) compound by a facile wet-chemical route at a low temperature (65 °C), followed by a dehydration process (600 °C).

Synthesis and characterization of highly organized crystalline rutile nanoparticles by low temperature dissolution-reprecipitation process

Rutile nanoparticles have been synthesized by acid hydrolysis of titanium isopropoxide by low-temperature dissolution-reprecipitation process. High-resolution transmission electron micrographs of the rutile colloidal solution show needle-shaped rutile nanoparticles with the dimensions of 10–30 nm in diameter and 100–150 nm in length. X-ray diffraction (XRD) data show the existence of only the rutile polymorph in TiO2 powder with a crystallite size of 11.3 nm.

Conducting and Biopolymer Based Electrospun Nanofiber Membranes for Wound Healing Applications

Conducting polyaniline with o-aminobenzenesulfonic acid copolymer (PAni-co-PABSA) and poly (vinyl alcohol) (PVA)/chitosan oligossacaride (COS) biopolymers based electrospun nanofiber membranes have been exploited for wound healing applications. The nanofiber membranes were assembled by generating two full-thickness skin wounds on the dorsum of SD rats. The PAni-co-PABSA/PVA/COS nanofiber membranes treated wounds show much smaller inflammatory reactions throughout the experimental period.

Li2MnSiO4 Nanorods-embedded Carbon Nanofibers for Lithium-ion Battery Electrodes

Minute Li2MnSiO4 nanorods embedded in carbon nanofibers (LMS/CNFs) are prepared via an ethanol-based solvothermal process, and then by electrospinning and subsequent carbonization processes. The LMS nanorods (NRs) have lengths and widths of 15–20 nm and 5 nm, respectively, and grow lengthwise, i.e., along the [010] direction, which facilitates Li-ion transport in the LMS during charging/discharging. In addition, these LMS NRs are well incorporated in the electrospun LMS/CNFs after carbonization.

الصفحات

اشترك ب KSU Faculty آر.إس.إس