نتایج جستجو برای: Regeneration

تعداد نتایج: 60792  

پایان نامه :وزارت بهداشت، درمان و آموزش پزشکی - دانشگاه علوم پزشکی و خدمات بهداشتی درمانی مشهد - دانشکده دندانپزشکی 1394

جایگزینی دندان های از دست رفته به وسیله ایمپلنت دندانی به فراوانی انجام میشود. برای اینکه ایمپلنت به طور بهینه جایگزین شود باید در استخوان ایده ال جایگذاری شود که البته این نقایص قابل ترمیم هستند، یکی از این روشها guided bone regeneration است.

Journal: :avicenna journal of dental research 0
sara soheilifar department of periodontology, hamadan university of medical sciences, hamadan, ir iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences) sepideh soheilifar department of orthodontics, shahid beheshti university of medical sciences, tehran, ir iran; sepideh soheilifar, department of orthodontics, shahid beheshti university of medical sciences, evin st., tehran, ir iran. tel: +98-9121944033سازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید بهشتی (shahid beheshti university of medical sciences) mohsen bidgoli department of periodontology, hamadan university of medical sciences, hamadan, ir iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences) parviz torkzaban department of periodontology, hamadan university of medical sciences, hamadan, ir iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences)

context this article reviews the available evidence about the barrier membranes utilized in guided tissue regeneration process to prevent the migration of unfavorable cells to the wound area. evidence acquisition available evidence about membranes properties and their different uses were reviewed, and the results of clinical and animal studies and systematic reviews were gathered. results a lar...

پایان نامه :وزارت بهداشت، درمان و آموزش پزشکی - دانشگاه علوم پزشکی و خدمات بهداشتی درمانی مشهد - دانشکده دندانپزشکی 1391

چکیده مقدمه درمان دندانهای با پالپ نکروتیک وآپکس نابالغ یک چالش واقعی برای درمانگر است. فرضیه جدید regeneration افقهای جدیدی در درمان اینگونه دندانها ایجاد کرده است که مزایای آن شامل ادامه رشد ریشه و افزایش طول و ضخامت عاج و تشکیل دوباره عروق و اعصاب است . این عمل حتی در دندانهای نابالغ بشدت عفونی با پریودونتیت وآبسه پری رادیکولار قابل انجام است. مشاهده شده که prp (platelet rich plasma) یک ک...

Journal: :thrita 0
hessam nowzari usc advanced periodontics, university of southern california, california, los angeles, usa sandra k. rich usc advanced periodontics, university of southern california, california, los angeles, usa neda moslemi department of periodontics, faculty of dentistry, tehran university of medical sciences, tehran, ir iran; department of periodontics, faculty of dentistry, tehran university of medical sciences, p. o. box: 1439955991, tehran, ir iran. tel: +98-9128985838 maryam johari department of oral and maxillofacial radiology, tehran university of medical sciences, tehran, ir iran rahil farahani saveh nursing and gynecology university, arak, ir iran

context periodontal plastic surgery can help people improve their lives by addressing aesthetic parameters of their smile. much of what comprises a beautiful and appealing smile is influenced by emotion and personality; however, many structural elements of a smile can be improved through surgical intervention. evidence acquisition the end result often lends significant support to people who wis...

Journal: :journal of plant molecular breeding 2013
abdoreza bagheri vali ollah ghasemi omraan samira hatefi

establishment of an efficient and reproducible regeneration protocol is one of the basic prerequisites for genetic transformation of any crop plant. in vitro culture of lentil has proven to be difficult. in spite of a number of reports on the regeneration of this plant, very few satisfying and reproducible protocol has yet been reported. this study carried out for investigation of different hor...

Natural regeneration ensures the survival of forest stands and sustainable forest development. The present study was conducted to investigate the natural regeneration of Persian oak (Quercus macranthera fisch. & C.A.Mey. Ex Hohen) stands in Arasbaran protected forest. Measurement of the frequency of standard and coppice regenerations was carried out in one-hectare square plots (100 × 100 m) in ...

Journal: :progress in biological sciences 2013
masoud mirmasoumi pejman azadi ali sharafi valentine ntui otang masahiro mii

transverse thin cell layer sections excised from in vitro scales of lilium ledebourii were cultured on murashige and skoog (ms) medium supplemented with various plant growth regulators (pgrs) at different concentrations. although, bulblets were produced on pgrfree ms medium during organogenesis, addition of 0.25 mg l-1 6-benzyladenine or 5.0 mg l-1 indole-3-acetic acid to the medium increased t...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده منابع طبیعی و علوم دریایی 1388

this research was conducted in two protect and destroy region in the middle zagros, in illam province. in order to identification of ecological species group and evaluate density of regeneration, effect of many factors such as protection, vegetation, physiographic factors, physical and chemical properties of soil in study locations were studied. to achieve these purpose number of 54 plots using...

Journal: :کشاورزی (منتشر نمی شود) 0
مریم حسینی عضو هیات علمی موسسه تحقیقات برنج کشور، رشت علی اکبر عبادی عضو هیات علمی موسسه تحقیقات برنج کشور، رشت حمید شفیعی ثابت کارشناس موسسه تحقیقات برنج کشور، رشت

low efficiency of callus induction and green-plant regeneration have limited the application of anther culture in breeding programs. this study was conducted to determine the inheritance of callus induction and plant regeneration in rice (oryza sativa) anther culture. ten genotypes drived from a five-parent diallel mating set contain khazar, sepidrood, hashemi, alikazemi and nematt were evaluat...

Journal: :تحقیقات آب و خاک ایران 0
آرش کرمی کارشناسی ارشد، دانشگاه تهران قوام الدین زاهدی دانشیار، دانشگاه تهران جهانگیر فقهی دانشیار، دانشگاه تهران

some soil physical and chemical characteristics were analyzed in order to reveal the relationship between forest soils and regeneration patches. gorazbon district of kheyrud was selected as a case study for the research area. all regeneration patches were recorded using gps device. to assess the spatial structure and to quantify the metrics of regeneration patches, analyzing of landscape metric...

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