نتایج جستجو برای: 73649 ha

تعداد نتایج: 59532  

Journal: :In vitro models 2023

Previously, we have developed a novel porous hydroxyapatite/poly l-lactic-co-caprolactone (HA/PLCL) composite sandwich beam as new scaffold material for bone regeneration. This work presents the study of bending fracture mechanisms and microdamage L-lactic-acid (HA/PLLA) beam, in comparison to previous HA/PLCL beam. Both beams were fabricated using method which single layered between two polyme...

Journal: :iranian journal of cancer prevention 0
b fekry department of biochemistry, university of mysore, mysore-570 006, india m siddaiah department of biochemistry, university of mysore, mysore-570 006, india kp srinivas department of biochemistry, university of mysore, mysore-570 006, india rv nunna department of biochemistry, university of mysore, mysore-570 006, india sd banerjee tufts university school of medicine, boston, usa karuna kumar mortha department of biochemistry, university of mysore, mysore-570 006, india

background: analysis of human cancer serum has revealed the presence of high amounts of hyaluronan (hyaluronic acid, ha) when compared to human normal serum, it is well documented that ha and its receptors, known as hyaladherins (habps) are involved in matrix regulation, cell proliferation, migration and malignant tumour progression. these hyaladherins not only interact with hyaluronan at the m...

2017
Takuji Nishihara Yoshiharu Morimoto

Purpose The aim of the present prospective study was to investigate the efficacy of hyaluronan (HA) using two different concentrations as embryo transfer media for in vitro fertilization embryo transfer cycles. Methods A total of 169 cycles undergoing fresh embryo transfer on day 2 or 3, 561 cycles undergoing frozen-thawed embryo transfer on day 2 or 3, and 484 cycles of frozen-thawed blastoc...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سمنان - دانشکده مهندسی موادو متالورژی 1390

چکیده : تیتانیوم و آلیاژهای آن موادی منا سب جهت ساخت ایمپلنت ها است که خواص مطلوبی نظیر مدول نسبتاً پایین، دانسیته پایین و استحکام بالا را دارا می با شند. یکی از روش های بهبود خواص تیتانیوم تهیه کامپوزیت می با شد که خواص مکانیکی مورد نیاز از طریق تیتانیوم و زیست سازگاری و زیست فعالی از طریق سرامیکها تا?مین می گردد. در این تحقیق پودر نانو کامپوزیت تیتانیوم-هیدروکسی آپاتیت بروش آلیاژ سازی مکانیکی...

Journal: :Biomacromolecules 2012
Mandana Veiseh Daniel Breadner Jenny Ma Natalia Akentieva Rashmin C Savani Rene Harrison David Mikilus Lisa Collis Stefan Gustafson Ting-Yim Lee James Koropatnick Leonard G Luyt Mina J Bissell Eva A Turley

An increase in hyaluronan (HA) synthesis, cellular uptake, and metabolism occurs during the remodeling of tissue microenvironments following injury and during disease processes such as cancer. We hypothesized that multimodality HA-based probes selectively target and detectably accumulate at sites of high HA metabolism, thus providing a flexible imaging strategy for monitoring disease and repair...

Journal: :Molecules 2016
Mohammad Vaezi Cameron Black David M R Gibbs Richard O C Oreffo Mark Brady Mohamed Moshrefi-Torbati Shoufeng Yang

Addition of bioactive materials such as calcium phosphates or Bioglass, and incorporation of porosity into polyetheretherketone (PEEK) has been identified as an effective approach to improve bone-implant interfaces and osseointegration of PEEK-based devices. In this paper, a novel production technique based on the extrusion freeforming method is proposed that yields a bioactive PEEK/hydroxyapat...

2017

HAAlumina nanocomposite is biocompatible and has desirable mechanical and physical properties. Less cost, simple synthesis method, and fast production are the added advantages of this nanocomposite. Thus HA coatings on the surface of alumina substrates are used to combine excellent bioactivity of HA with superior mechanical properties of the alumina substrates. One of the elements associated wi...

پایان نامه :وزارت علوم، تحقیقات و فناوری - پژوهشگاه ملی مهندسی ژنتیک وزیست فناوری 1390

ویروس آنفلوآنزا که عامل مولد یکی از بیماریهای حاد تنفسی می باشد در غشا خود واجد گلیکوپروتئین مهمی به نام همآگلوتینین است. این مولکول ضمن اینکه اصلی ترین آنتی ژن برای القا پاسخ ایمنی بر علیه ویروس است، همواره به عنوان مدل ایده آلی برای مطالعه فرآیندهای بیولوژیکی مهم از جمله گلیکوزیلاسیون مورد استفاده قرار گرفته است. گلیکوزیلاسیون ( به ویژه از نوع n) متداولترین تغییر ضمن یا پس از ترجمه ای پروتئین...

Journal: :Journal of biomedical materials research. Part A 2006
Sahil Jalota Sarit B Bhaduri A Cuneyt Tas

Calcium phosphate [single-phase hydroxyapatite (HA, Ca(10)(PO(4))(6)(OH)(2)), single-phase tricalcium phosphate (beta-TCP, Ca(3)(PO(4))(2)), and biphasic HA-TCP] whiskers were formed by using a novel microwave-assisted molten salt mediated process. Aqueous solutions containing NaNO(3), HNO(3), Ca(NO(3))(2) x 4H(2)O, and KH(2)PO(4) (with or without urea) were used as starting reagents. These sol...

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