نتایج جستجو برای: pdl

تعداد نتایج: 1573  

Journal: :Infection and immunity 1998
S Agarwal C S Chandra N P Piesco H H Langkamp L Bowen C Baran

Periodontal ligament (PDL) cells maintain the attachment of the tooth to alveolar bone. These cells reside at a site in which they are challenged frequently by bacterial products and proinflammatory cytokines, such as interleukin-1beta (IL-1beta), during infections. In our initial studies we observed that IL-1beta down-regulates the osteoblast-like characteristics of PDL cells in vitro. Therefo...

2014
Facundo Carreiro Yde Venema

It is well known that Propositional Dynamic Logic (PDL) can be seen as a fragment of the modal μ-calculus. In this paper we provide an exact syntactic characterization of the fragments of the μ-calculus that correspond to PDL and to test-free PDL. In addition we give automata-theoretic characterizations for PDL, with and without tests, which shed light on the relation between these logics and t...

Journal: :Journal of Logic, Language and Information 1996
Giuseppe De Giacomo

In this paper we show that it is possible to eliminate the converse operator from the propositional dynamic logic CPDL Converse PDL without compromising the soundness and completeness of inference for it Speci cally we present an encoding of CPDL formulae into PDL that eliminates the converse programs from a CPDL formula but adds enough information so as not to destroy its original meaning with...

Journal: :Lasers in surgery and medicine 2012
Wenbin Tan Wangcun Jia Victor Sun Martin C Mihm J Stuart Nelson

BACKGROUND AND OBJECTIVES Pulsed dye laser (PDL) is the most effective treatment for port wine stain (PWS) birthmarks. However, regeneration and revascularization of photocoagulated blood vessels may result in poor therapeutic outcome. We have recently shown that rapamycin (RPM), an angiogenesis inhibitor, can reduce the regeneration and revascularization of photocoagulated blood vessels. Herei...

2017
Steven W McCormack Ulrich Witzel Peter J Watson Michael J Fagan Flora Gröning

Alveolar bone remodelling is vital for the success of dental implants and orthodontic treatments. However, the underlying biomechanical mechanisms, in particular the function of the periodontal ligament (PDL) in bone loading and remodelling, are not well understood. The PDL is a soft fibrous connective tissue that joins the tooth root to the alveolar bone and plays a critical role in the transm...

2011
CS Scanlon JT Marchesan S Soehren M Matsuo Y Kapila

The cell population within the periodontal ligament (PDL) tissue is remarkably heterogeneous1. Fibroblasts, a mixed population of cells, are the main cellular component of the PDL and the cell type most often studied for periodontal regeneration. Osteoblasts and osteoclasts are found on the bone side, while fibroblasts, macrophages, undifferentiated adult/mesenchymal stem cells, neural elements...

ژورنال: لیزر پزشکی 2009
زند, نسرین,

زمینهمی تواند به عنوان در نظر گرفته شود های سطحی و ند ولر با قطرهای مختلف می باشدBCC عروق خونی بازال سل کارسینومایPulsed dye laser (PDL) هدف بالقوه برای تابش. هدف این مطالعه، بررسی میزان تأثیر جلسات متعددBCC بر روی PDL تابش.روش مطالعهتأیید شده بوسیله بیوپسی به فواصل ) تحت 4 جلسه ) BCC 29 مورد2 هفته قرار گرفتند. تومور و PDL 595nm تابش لیزر4 حاشیه آن بدون استفاده از سیستم خنک کننده، تحت mmبا پارا...

Journal: :The Angle orthodontist 2008
Yijin Ren Jaap C Maltha Lets Stokroos Robert S B Liem Anne Marie Kuijpers-Jagtman

OBJECTIVE To investigate the age-dependent morphology of the periodontal ligament (PDL) tissue and changes in its surface area (SA) during force application provided with a standardized orthodontic setup for a period of 12 weeks in young and adult rats. METHODS Two groups of 30 rats, age 6 weeks and 9 to 12 months, were used. Orthodontic appliances were placed to move the maxillary molars mes...

Journal: :Archives of Iranian medicine 2014
Amir Hooshang Ehsani Pedram Noormohammadpoor Mona Abdolreza Kamran Balighi Zaynab Arianian Soroush Daklan

BACKGROUND The combination of pulsed dye laser (PDL) and topical propranolol are used with variable effectiveness for the treatment of infantile hemangiomas (IH), particularly for superficial lesions. OBJECTIVE(S) The aim of this study was to investigate whether the therapeutic efficacy of prescribing topical propranolol along with PDL was superior to PDL therapy alone in the treatment of IH....

Journal: :Biomacromolecules 2007
Zhaozhong Jiang Himanshu Azim Richard A Gross Maria Letizia Focarete Mariastella Scandola

Candida antarctica Lipase B (CALB), a metal-free enzyme, was successfully employed as catalyst for ring-opening copolymerization of omega-pentadecalactone (PDL) with p-dioxanone (DO) under mild reaction conditions (<80 degrees C, atmospheric pressure). Poly(PDL-co-DO) with high molecular weight (Mw > 30 000) and a wide range of comonomer contents was synthesized using various PDL/DO feed ratios...

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