نتایج جستجو برای: newtons method
تعداد نتایج: 1630280 فیلتر نتایج به سال:
abstract biometric access control is an automatic system that intelligently provides the access of special actions to predefined individuals. it may use one or more unique features of humans, like fingerprint, iris, gesture, 2d and 3d face images. 2d face image is one of the important features with useful and reliable information for recognition of individuals and systems based on this ...
The raspberry (Rubus idaeus) is an important fruit crop; however, its accelerated softening a critical postharvest problem, even at low temperatures. Its has been partially associated with the endogenous production of ethylene from receptacle during ripening. To understand relationship between and quality beginning ripening process, physiological parameters were evaluated ‘Heritage’ cultivar. T...
A wave function can be written in the form of {\psi} = ReiS/h. We put this into quantum mechanics equations and take hydrodynamic limit, i. e., let Planck constant zero. Then motion (EOM) describing movement macroscopic bodies are retrieved. From Schrodinger equation, we obtain Newtonian mechanics, including Newtons three laws motion; from decouple Klein-Gordon equation with positive kinetic en...
fluorescence chemical sensors for the highly sensitive and selective determination of pb2+ , hg2+, co2+ and fe3+ ions in aqueous solutions are described. the ion sensing system was prepared by incorporating lipophilic ligand (l) as a neutral ion-selective fluoroionophore in the plasticized pvc membrane containing sodium tetraphenylborate or potasium tetrakis (p-chlorophenyl) borate as a liphoph...
PURPOSE The purpose of this study was to compare passive tactile sensibility of natural teeth and osseointegrated dental implants in the maxilla. MATERIAL AND METHODS Twenty-nine patients (17 males and 12 females) were included in the study. Natural teeth were subdivided into two groups: non endodontically treated teeth (NETT) and endodontically treated teeth (ETT). A computer-controlled cust...
The aim of this study was to compare the fracture resistance of roots filled with gutta percha (GP) and different root canal sealers.Fifty-five human maxillary central incisors were selected and randomly divided into three experimental groups (Groups 1-3) and two control groups (Groups 4 and 5). They were Group 1-15 root canals filled with an epoxy resin-based sealer (AH Plus) and GP, Group 2 -...
OBJECTIVE The aim of this study was to determine how physical and morphological properties affect the fracture resistance of roots, and which criteria are important for root specimen standardization in fracture resistance studies. MATERIALS AND METHODS Seventy-five freshly extracted human canine teeth were selected. Crowns were sectioned from the cement-enamel junction and the root lengths we...
The concept of the Micro-Hexflex originated from the HexFlext m , a monolithic sixdegree-of-freedom compliant mechanism. The Micro-Hexflex-a miniaturized version of HexFlex-uses sandwich structures with U-shaped electro-thermal actuators to achieve six-axis displacement via in-plane actuators. The Micro-Hexflex is designed to maneuver an optical fiber, but it can also be applied to other commun...
Lipase-catalyzed production of palm esters by alcoholysis of palm oil with oleyl alcohol in n-hexane was performed in 2L stirred-tank reactor (STR). Investigation on the performance of reactor operation was carried out in batch mode STR with single impeller mounted on the centrally located shaft. Rushton turbine (RT) impellers provide the highest reaction yield (95.8%) at lower agitation speed ...
Nomenclature A Aperture area of the antenna (square meters) D Diameter of antenna aperture (meters) Ef Gravitational potential energy due to film (Joules) Ep Hydrostatic pressure potential energy (Joules) ET Total energy of the inflatable reflector system (Joules) F Focal length of antenna (meters) G Effective antenna gain GI Ideal antenna gain g Acceleration due to gravity (meters per square s...
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