Results 81 to 90 of about 24,207 (210)

Engineered Biopolymer Architectures for Selective Metal Ions Extraction

Advanced Sustainable Systems, Volume 10, Issue 4, April 2026.
This review establishes a mechanism‐oriented framework that connects biopolymer chemistry, structural engineering, ligand design, and hydrometallurgical process variables for selective metal‐ion extraction. It analyzes how functional groups, hierarchical architectures, and solution speciation govern adsorption capacity and selectivity in acidic ...
Amir Nobahar, Helena Passos, Nicolas Schaeffer, Filipe H. B. Sosa, João A. P. Coutinho   +4 more
wiley   +1 more source

The relationship between symphysis-fundal height and intravenous ephedrine dose in spinal anesthesia for elective cesarean section [PDF]

Korean Journal of Anesthesiology, 2010
BackgroundA decreased lumbosacral subarachnoidal space volume is a major factor in the cephalad intrathecal spread of local anesthetics in term parturients and their subarachnoidal space is decreased due to the compressive effect of huge uteri. Therefore,
Sung Hee Chung, Hyeon Jeong Yang, Jong-Yeon Lee, Kum-Hee Chung, Duk-Hee Chun, Byeong-Kuk Kim   +5 more
doaj   +1 more source

Stellar mass-to-light ratios from galaxy spectra: how accurate can they be?

, 2009
Stellar masses play a crucial role in the exploration of galaxy properties and the evolution of the galaxy population. In this paper, we explore the minimum possible uncertainties in stellar mass-to-light (M/L) ratios from the assumed star formation ...
Bell, Eric F., Gallazzi, Anna
core   +1 more source

Noncoherent Hybrid DS-SFH Spread-Spectrum Multiple-Access Communications [PDF]

IEEE Transactions on Communications, 1985
The performance of synchronous and asynchronous hybrid direct-sequence/slow-frequency-hopped spread-spectrum multiple-access communications over additive white Gaussian noise channels is examined. Systems employing binary or quaternary phase-shift-keying modulation with coherent demodulation are investigated.
openaire   +1 more source

Longitudinal Analysis of Psychological Distress in Grandparents of Children With Cancer: Results From a Multicenter Cohort Study in Switzerland (GROKids Project)

Cancer Medicine, Volume 15, Issue 4, April 2026.
ABSTRACT Objectives This exploratory study assessed psychological distress of grandparents of children recently diagnosed with cancer within 2 years post‐diagnosis. We examined changes over time, identified associated factors, and compared distress levels with a comparison group (grandparents of survivors).
Barbara Gantner, Cristina Priboi, Anica Ilic, Freimut H. Schilling, Ahmed Farrag, Katrin Scheinemann, Marc Ansari, Jeanette Greiner, Nicolas von der Weid, Pierlugi Brazzola, Manuel Diezi, Elena Lemmel, Pauline Holmer, Peter Francis Raguindin, Gisela Michel   +14 more
wiley   +1 more source

Insoluble fibre and enzyme supplementation in mash or pellets diets on growth performance, apparent ileal digestibility and intestinal morphology of broiler chickens fed barley containing diets

Veterinary Medicine and Science
Background Enzyme supplementation and the inclusion of fibre in the barley‐based diets have been some of the alternatives proposed to improve productivity in the absence of growth promoters. Objective This study was performed to investigate the effect of
Zeinab Pourazadi, Somayyeh Salari, Mohammad Reza Tabandeh, Mohammad Reza Abdollahi   +3 more
doaj   +1 more source

The role of management on costs and efficiency in HIV prevention interventions for female sex workers in Nigeria: a cluster-randomized control trial

Cost Effectiveness and Resource Allocation, 2018
Background While the world has made much global progress toward the reduction of new HIV infections, HIV continues to be an important public health problem.
S. Bautista-Arredondo, N. Nance, A. Salas-Ortiz, D. Akeju, A. G. Oluwayinka, I. Ezirim, J. Anenih, C. Chima, O. Amanze, G. Omoregie, K. Ogungbemi, S. H. Aliyu   +11 more
doaj   +1 more source

Toward Model Amphiphilic Polymer Co‐Networks: Linking Architecture to Structure and Properties

Macromolecular Chemistry and Physics, Volume 227, Issue 7, 14 April 2026.
This review provides a comprehensive overview on model amphiphilic polymer co‐networks, demonstrating how precise control over network architecture enables systematic investigation of their structure and properties. By linking molecular design to macroscopic behavior, it highlights fundamental structure–property relationships and shows how these ...
Sebastian Seitel, David Beyer, Frank Böhme, Carolin Bunk, Yasmina El‐Faramawi, Jonas J. Grün, Kevin Hagmann, Christian Holm, Michael Lang, Kay Saalwächter, Felix H. Schacher, Reinhard Scholz, Regine von Klitzing, Marie Weinhart, Sebastian Seiffert   +14 more
wiley   +1 more source

The Sloan Digital Sky Survey: The Cosmic Spectrum and Star-Formation History [PDF]

, 2002
We present a determination of the `Cosmic Optical Spectrum' of the Universe, i.e. the ensemble emission from galaxies, as determined from the red-selected Sloan Digital Sky Survey main galaxy sample and compare with previous results of the blue-selected ...
Andrew Connolly, Avery Meiksin, Bressan A., Christy Tremonti, Donald G. York, Donald P. Schneider, Eric Peng, Fioc M., Hummer D. G., Istvan Csabai, Ivan K. Baldry, Jon Brinkmann, Jon Loveday, Karl Glazebrook, Madau P., Mark SubbaRao, Masataka Fukugita, Michael R. Blanton, Robert Nichol, Rowan-Robinson M., Željko Ivezić   +20 more
core   +2 more sources

Symphysis-fundal height measurements in predicting fetal macrosomia

International Journal of Medicine and Health Development, 2000
The predictive value of symphysio-funtfai height(SFH) measurements in fetal macrosomia was evaluated in a prospective cross-sectional study of 378 consecutive parturients at the University of Nigeria Teaching Hospital, Enugu, Eastern Nigeria over a three
H E Onah
doaj