Results 41 to 50 of about 621,356 (276)

Two-dimensional metric and tetrad gravities as constrained second order systems [PDF]

, 2006
Using the Gitman-Lyakhovich-Tyutin generalization of the Ostrogradsky method for analyzing singular systems, we consider the Hamiltonian formulation of metric and tetrad gravities in two-dimensional Riemannian spacetime treating them as constrained ...
Bukhbinder I. L., Carmeli M., Dirac P. A. M., Gitman D. M., Gitman D. M., Gitman D. M., N. KIRIUSHCHEVA, R. N. GHALATI, S. V. KUZMIN, Whittaker E. T.   +9 more
core   +2 more sources

Comparison of the accuracy of bracket positioning between direct and digital indirect bonding techniques in the maxillary arch: a three-dimensional study

Progress in Orthodontics, 2022
Background/objectives When the indirect bonding technique was developed in 1972 by Silverman and Cohen, many authors wondered whether this technique would improve bracket positioning accuracy compared to the direct bonding technique.
Rami Aboujaoude, Roland Kmeid, Carine Gebrael, Elie Amm   +3 more
doaj   +1 more source

Pain and removal force associated with bracket debonding: a clinical study

Journal of Applied Oral Science, 2021
Objective: Pain is a problem during bracket removal, and more comfortable treatment is needed. This study examined the association of pain with the removal force required for ceramic brackets, compared with metal and plastic brackets, to determine which ...
Narumi Nakada, Yasuki Uchida, Mizuki Inaba, Ryo Kaetsu, Natsuo Shimizu, Yasuhiro Namura, Mitsuru Motoyoshi   +6 more
doaj   +1 more source

Finite Order BFFT Method [PDF]

, 2003
We have proposed a method in the context of BFFT approach that leads to truncation of the infinite series regarded to constraints in the extended phase space, as well as other physical quantities (such as Hamiltonian).
A. SHIRZAD, Dirac P. A. M., Goldstein H., M. MONEMZADEH, Stückelberg E. C. G.   +4 more
core   +2 more sources

Comparison of different methods of controlling pain during debonding of orthodontic brackets

Journal of the Pakistan Medical Association, 2023
Objective: To compare the efficacy of finger pressure and plastic wafers in terms of pain control during debonding. Method: This cross sectional study was conducted at the Department of Orthodontics, Armed Forces Institute of Dentistry, Rawalpindi, Pakistan, from January to June 2020, and comprised patients of either gender aged 13-21 years who had ...
Kashif Iqbal, Zahra Khalid, Ali Akhtar Khan, Abdullah Jan   +3 more
openaire   +2 more sources

Outcomes of Live Virus Vaccination in Patients With Vascular Anomalies Being Treated With Sirolimus

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Live vaccination in patients with vascular anomalies (VA) receiving sirolimus remains controversial due to immunosuppressive effects and theoretical risks. Procedure This single‐center retrospective study included patients with VA less than 4 years old at the start of sirolimus therapy who were incompletely vaccinated.
Svatava Merkle, Kiersten Ricci, Kelly Blache, Rebecca A. Marsh, Adrienne M. Hammill, Elissa Engel   +5 more
wiley   +1 more source

Financial Burden Associated With Hospitalisation Among Families of Childhood Brain Tumours in Australia

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Families of children with cancer experience significant financial strain, even with universal healthcare. Indirect costs, such as productivity losses and non‐medical expenses, are rarely included in economic evaluations, and little is known about how effectively financial aid programmes alleviate this burden. Childhood brain tumours
Megumi Lim, Natalie Bradford, David Brain, Sameera Senanayake, Sanjeewa Kularatna, Kate Young, Christine Cashion, Tim Hassall, Susanna Cramb   +8 more
wiley   +1 more source

Classification and Casimir Invariants of Lie-Poisson Brackets

, 1999
We classify Lie-Poisson brackets that are formed from Lie algebra extensions. The problem is relevant because many physical systems owe their Hamiltonian structure to such brackets. A classification involves reducing all brackets to a set of normal forms,
Arnold, Arnold, Benjamin, Berezin, Bretherton, Chevalley, Hazeltine, Hazeltine, Hazeltine, Hernández-Bermejo, Holm, Holmes, Jean-Luc Thiffeault, Kirillov, Kuroda, Kuvshinov, Kuznetsov, Marsden, Marsden, Marsden, Marsden, Marsden, McLachlan, Meacham, Morrison, Morrison, Morrison, Morrison, Morrison, Newcomb, Nore, Olver, P.J. Morrison, Padhye, Parthasarathy, Strauss   +35 more
core   +2 more sources

Comparison of Shear Bond Strengths of Ceramic Brackets Using Either Self-etching Primer or Conventional Method After Intracoronal Bleaching

Turkish Journal of Orthodontics, 2015
Objective:To evaluate initial shear bond strengths (SBSs) of ceramic brackets using either a self-etching primer (SEP) or the conventional method (CM) after intracoronal bleaching with sodium perborate and distilled water.Materials and Method:Eighty ...
Fethiye Cakmak, Sibel Kocak, Mustafa Murat Kocak, Selma Elekdag-Turk, Tamer Turk   +4 more
doaj   +1 more source

An upstream open reading frame regulates expression of the mitochondrial protein Slm35 and mitophagy flux

FEBS Letters, EarlyView.
This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva, Ariann E. Mendoza‐Martínez, P. Abril Medina‐Flores, Carlos Campero‐Basaldua, Alexander DeLuna, Soledad Funes   +5 more
wiley   +1 more source