Results 71 to 80 of about 96,226 (248)

Robust Padé approximation via SVD [PDF]

open access: yes, 2011
Padé approximation is considered from the point of view of robust methods of numerical linear algebra, in particular the singular value decomposition. This leads to an algorithm for practical computation that bypasses most problems of solution of nearly ...
Gonnet, Pedro   +2 more
core  

Cyclotron resonance of a magnetic quantum dot

open access: yes, 2008
The energy spectrum of a one-electron quantum dot doped with a single magnetic ion is studied in the presence of an external magnetic field. The allowed cyclotron resonance (CR) transitions are obtained together with their oscillator strength (OS) as ...
Nguyen, Nga T. T., Peeters, F. M.
core   +1 more source

Patient‐reported outcomes, postoperative pain and pain relief after day‐case surgery (POPPY): baseline data from day surgery practice in the UK

open access: yesAnaesthesia, Volume 81, Issue 4, Page 477-488, April 2026.
Summary Introduction Most patients undergoing elective surgery in the UK are discharged from hospital on the same day. Despite this, there is a lack of UK patient‐centred outcome measures relating to quality of recovery, pain and analgesic use. The POPPY study was a UK‐wide prospective, observational study measuring short‐ and longer‐term patient ...
Martha Belete   +2177 more
wiley   +1 more source

SINTEZA ȘI STUDIUL LIGANZILOR ȘI COMPUSULUI COORDINATIV AL OXOVANADIULUI(IV) ÎN BAZA HIDRAZIDEI ACIDULUI IZONICOTINIC ȘI S-METILTIOSEMICARBAZIDEI

open access: yesActa et Commentationes: Ştiinţe Exacte şi ale Naturii, 2019
Au fost sintetizați doi liganzi: izonicotinoilhidrazona 1-fenil-1,3-butandionei (L1 ) și S-metiltiosemicarbazona o-vanilinei (L2 ) și un compus coordinativ al oxovanadiului IV [VOL1 (OCH3)]2 și investigați cu spectroscopia RMN 1H și 13C RMN ...
Mihaela ROTARU, Maria COCU
doaj   +1 more source

Spatially-Coupled MacKay-Neal Codes and Hsu-Anastasopoulos Codes

open access: yes, 2011
Kudekar et al. recently proved that for transmission over the binary erasure channel (BEC), spatial coupling of LDPC codes increases the BP threshold of the coupled ensemble to the MAP threshold of the underlying LDPC codes.
Kasai, Kenta, Sakaniwa, Kohichi
core   +1 more source

Patient‐reported outcomes, postoperative pain and pain relief after day‐case surgery (POPPY): chronic post‐surgical pain prevalence and associations*

open access: yesAnaesthesia, Volume 81, Issue 4, Page 489-499, April 2026.
Summary Introduction Day‐case surgical activity is increasing in the UK yet there is a lack of data on the prevalence of chronic post‐surgical pain in this population. This study uses data from the POPPY study to estimate the prevalence of chronic post‐surgical pain after day‐case surgery, its relationship with quality of life and also explores ...
Adam B. Brayne   +2177 more
wiley   +1 more source

Structure of outer membrane protein G in lipid bilayers

open access: yesNature Communications, 2017
Porins, like OmpG, are embedded in the outer membrane of bacteria and facilitate uptake and secretion of nutrients and ions. Here the authors present a protocol for solid state NMR structure determination of proteins larger than 25 kDa and use it to ...
Joren S. Retel   +16 more
doaj   +1 more source

Contact equations, Lipschitz extensions and isoperimetric inequalities

open access: yes, 2009
We characterize locally Lipschitz mappings and existence of Lipschitz extensions through a first order nonlinear system of PDEs. We extend this study to graded group-valued Lipschitz mappings defined on compact Riemannian manifolds.
Magnani, Valentino
core   +2 more sources

Effect of Using the Food Quotient as a Proxy of the Respiratory Quotient in the Calculation of Energy Expenditure by the Doubly Labeled Water Method in Older Adults

open access: yesAmerican Journal of Human Biology, Volume 38, Issue 3, March 2026.
ABSTRACT Background and Aims Accurate measurement of total energy expenditure (TEE) is critical for maintaining energy balance and body weight. This study aimed to analyze differences in TEE assessed by the doubly labeled water method (DLW‐TEE), using food quotient (FQ) derived from self‐reported 24‐h dietary recalls, respiratory quotient measured by ...
Dennis Gustavo Alves de Mello   +4 more
wiley   +1 more source

COMPLETA ASIGNACIÓN DE LOS ESPECTROS DE 1H Y 13C RMN DE DOS GUAYANOLIDAS CONOCIDAS AISLADAS DE Centaurea musimomum

open access: yesRevista Colombiana de Química, 2008
Se complementan los datos espectroscópicos de dos guayanolidas conocidas aisladas de C. musimomum por 1H, 13C y 2D RMN (HSQC, HMBC, 1H-1H COSY).
K. Medjroubi   +3 more
doaj  

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