نتایج جستجو برای: nano bioglass

تعداد نتایج: 50993  

Journal: :Journal of oral and maxillofacial surgery : official journal of the American Association of Oral and Maxillofacial Surgeons 2005
Regina Landesberg Andrea Burke David Pinsky Ronald Katz Jennifer Vo Sidney B Eisig Helen H Lu

PURPOSE This study proposes an alternative preparation method of platelet-rich plasma (PRP). Specifically, we compare the use of thrombin receptor agonist peptide-6 (TRAP) and bovine thrombin as a clotting agent in the preparation of PRP. MATERIALS AND METHODS PRP was prepared by centrifugation and clotted with thrombin or TRAP. In vitro clotting times were monitored as a function of TRAP con...

2013
Karam Eldesoqi Caroline Seebach Christina Nguyen Ngoc Simon Meier Christoph Nau Alexander Schaible Ingo Marzi Dirk Henrich

Early vascularization is a prerequisite for successful bone healing and endothelial progenitor cells (EPC), seeded on appropriate biomaterials, can improve vascularization. The type of biomaterial influences EPC function with bioglass evoking a vascularizing response. In this study the influence of a composite biomaterial based on polylactic acid (PLA) and either 20 or 40% bioglass, BG20 and BG...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه یزد - دانشکده علوم پایه 1393

روش های معمول برای تهیه بنزوتیازول ها شامل تراکم 2-آمینوتیوفنول با کربوکسیلیک اسید ها، آلدهید ها و هم¬چنین ارتواسترها می باشد. در این کار، کاتالیست nano- γ-al2o3/bf3-n به عنوان کاتالیست اسید جامد تهیه شده است. برای تایید ساختار nano- γ-al2o3 و nano- γ-al2o3/bf3-n طیف مادون قرمز و پراش پرتو xگرفته شده است. مشتقهای بنزوتیازول از طریق تراکم آلدهید ها با 2-آمینوتیوفنول با استفاده از nano- γ-al2o...

Journal: :Chemical communications 2006
Tobias J Brunner Robert N Grass Wendelin J Stark

The preparation of amorphous nanopowders by flame synthesis opens access to common soda-lime, metal-doped glasses or bioglasses in the range of 20-80 nm and offers an alternative to conventional wet-phase preparation, solid state reactions or melting.

Journal: :European cells & materials 2011
Enrica Saino Stefania Grandi Eliana Quartarone Valentina Maliardi Daniela Galli Nora Bloise Lorenzo Fassina Maria Gabriella Cusella De Angelis Piercarlo Mustarelli Marcello Imbriani Livia Visai

Bioactive glasses synthesized by the sol-gel technique possess many of the qualities associated with an ideal scaffold material for a bone graft substitute. In view of the potential clinical applications, we performed a detailed in vitro study of the biological reactivity of synthesized 58S bioactive glass containing-zinc, in terms of osteoblast morphology, proliferation, and deposition of a mi...

Journal: :Silicon 2021

The thermoluminescence technique was employed to study bioglass matrix prepared using the traditional of glass making. synthesized were investigated X-ray diffraction (XRD), and differential thermal analysis (DTA) has been studied. highest thermoluminescent intensity found for composition 26.91 % CaO, 45.68 SiO2, 2.50 P2O5, 25.094 %Na2O (mol%), with only one glow peak at 460 k. TL response illu...

Journal: :Journal of The Mechanical Behavior of Biomedical Materials 2021

Bone scaffolds are often fabricated by initially producing custom-made filaments twin-screw extruder and subsequently fabricating into 3D using fused deposition modelling. This study aims to directly compare the effect of two alternative silica-rich filler materials on thermo-mechanical properties such after extrusion printing. Poly (DL-lactide-co-glycolide) (PDLGA) was blended with either 45S5...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی خواجه نصیرالدین طوسی 1390

فرآیند ماشینکاری به روش تخلیه الکتریکی( edm)، یکی از فرآیندهای نوین ماشینکاری است که کاربردهای متنوعی در ساخت و تولید محصولات میکرومتری دارد. رشد و توسعه نانوتکنولوژی و نیاز به بهره گیری از روشهای جدید موجب شده است که جذبه زیادی برای استفاده از فرآیند edm در ساخت و تولید محصولات نانومتری ایجاد شود. فرآیند nano-edm یک فرآیند ماشینکاری حرارتی است که در آن از انرژی حرارتی حاصل از جرقه الکتریکی برا...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان همدان - دانشکده ادبیات و علوم انسانی 1390

abstract this study is an attempt to determine the effect of nano- technology education on science lesson for fifth grade in primary school in the city of kermanshah. this research is experimental and is conducted in the from of pre-test and post- test for the control group. an achievement test was administered to determine the rate of learning in the students. the research is an applied one. ...

Journal: :Coatings 2023

Biomaterial coatings on dental implants are increasingly being used as a solution to the problems of rejection and implant loss. Bioglass® has been seen promising material for coating metal implants, increasing integration rate improving bond between bone implant. Multifunctional bioactive glasses can exhibit antibacterial, antitumor antioxidant effects with addition therapeutic ions. The ceriu...

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