نتایج جستجو برای: angle of root

تعداد نتایج: 21183736  

Journal: :Plants 2015
Lesley A Judd Brian E Jackson William C Fonteno

The study, characterization, observation, and quantification of plant root growth and root systems (Rhizometrics) has been and remains an important area of research in all disciplines of plant science. In the horticultural industry, a large portion of the crops grown annually are grown in pot culture. Root growth is a critical component in overall plant performance during production in containe...

2018
Xinxin Chen Yinian Li Ruiyin He Qishuo Ding

An important aspect of below-ground crop physiology is its root foraging performance, which is inherently related to root system architecture (RSA). A 2-yr field experiment was conducted and the field-state wheat RSA was phenotyped for root foraging trait (RFT). Four RSA-derived traits, i.e. Root horizontal angle (RHA), axial root expansion volume (AREV), RSA convex hull volume (CHV) and effect...

2017

Root resection is the process by which one or more of the roots of a tooth are removed at the level of the furcation while leaving the crown and remaining roots in function [1]. Indications for root resection therapy include: teeth with periodontal problems, endodontic problems, root fractures, and prosthetic problems [2]. Vertical root fracture (VRF) is an untoward complication to root canal t...

Journal: :International endodontic journal 2010
A Mendoza E Solano J J Segura-Egea

AIM To report a maxillary central incisor tooth with a horizontal root fracture and incomplete root development that healed and was then moved orthodontically some years after the traumatic injury. SUMMARY A 7-year-old girl attended following trauma to the maxillary anterior region. Radiologic examination revealed a horizontal root fracture in the middle third of the maxillary right central i...

Journal: :iranian journal of medical physics 0
mohammad javad t ahmasebi associated professor, medical physics & radiotherapy dept., golestan hospital, ahwaz university of medical sciences, ahwaz, iran mohammad ali behrooz professor, medical physics dept., ahwaz university of medical sciences, ahwaz, iran shole arvandi assistant professor, radiotherapy & oncology dept., golestan hospital, ahwaz university of medical sciences, ahwaz, iran davood khezerloo m.sc. medical physics dept., ahwaz university of medical sciences, ahwaz, iran mojtaba karbalai m.sc. medical physics dept., golestan hospital, ahwaz university of medical sciences, ahwaz, iran

introduction: nowadays,  considerable developments  in  the field  of  radiotherapy have  been  achieved.  they  include  the  advances  made  in  the  equipments  and  treatment  planning  techniques  which  require  highly complex calculations. such achievements have made it possible to treat cancer patients not only  with  higher  radiation  dose  but  also  with  higher  precision  and  con...

Journal: :iranian journal of basic medical sciences 0
veeramani raveendranath department of anatomy, sri manakula vinayakar medical college, pondicherry, india shankar nachiket department of anatomy, st. john’s medical college, sarjapur road, bangalore- 560034, karnataka, india narayanan sujatha department of anatomy, st. john’s medical college, sarjapur road, bangalore- 560034, karnataka, india ranganath priya department of anatomy, st. john’s medical college, sarjapur road, bangalore- 560034, karnataka, india devi rema department of anatomy, st. john’s medical college, sarjapur road, bangalore- 560034, karnataka, india

objective(s) the objective of this study was to document and explain bilateral differences in the q angle. materials and methods two hundred limbs of healthy adult indian volunteers were studied. the q angle was measured using a goniometric method with the subjects supine, quadriceps relaxed and lower limbs in neutral rotation. the relative lateral placement of the tibial tuberosity with respec...

Journal: :avicenna journal of dental research 0
m shirinzad assistant professor, department of operative dentistry, dental faculty, hamadan university of medical sciences, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences) sh kasraei associate professor, dental research center, department of operative dentistry, dental faculty, hamadan university of medical sciences, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences) m azarsina assistant professor, department of operative dentistry, dental faculty , international branch of shahid beheshti univeسازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید بهشتی (shahid beheshti university of medical sciences)

statement of the problem addition of metallic nano-particles to composite resins can change their water contact angle purpose the aim of this study was to evaluate the effect of addition of nano-particles of silver and zinc oxide to composite resins on their water contact angle materials and methods this in vitro study was performed on 60 composite resin samples. nano-silver and nano-zinc oxide...

ژورنال: مجله دندانپزشکی 2008
جوادی‌نژاد, شهرزاد, زارع جهرمی, مریم, میرعنایت, امیرعلی,

Background and Aim: The role of applying rotary instruments in reducing preparation time and proper root canal preparation have been approved in permanent teeth. The aim of this study was to compare the rotary instruments (Hero642) and K-files in root canal preparation of primary molars. Time and canal transportation were compared. Materials and Methods: In this experimental, invitro study, 30...

2011
Paramita Basu Kathleen M. Brown

Vertical placement of roots within the soil determines their efficiency of acquisition of heterogeneous belowground resources. This study quantifies the architectural traits of seedling basal roots of bean (Phaseolus vulgaris), and shows that the distribution of root tips at different depths results from a combined effect of both basal root growth angle (BRGA) and root length. Based on emergenc...

Journal: :Plant physiology 2011
Paramita Basu Kathleen M Brown Anupam Pal

Vertical placement of roots within the soil determines their efficiency of acquisition of heterogeneous belowground resources. This study quantifies the architectural traits of seedling basal roots of bean (Phaseolus vulgaris), and shows that the distribution of root tips at different depths results from a combined effect of both basal root growth angle (BRGA) and root length. Based on emergenc...

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