Results 101 to 110 of about 225,404 (337)

Dimensionless Investigations on Energy Conversion and Analysis of Interlayer Time in Laser‐Based Powder Bed Fusion of Polymers for Polyamide 12 with Nanoadditives and Polypropylene

Advanced Engineering Materials, EarlyView.
This study explores the energy conversion in powder bed fusion of polymers using laser beam for polyamide 12 and polypropylene powders. It combines material and process data, using dimensionless parameters and numerical models, to enable the prediction of suitable printing parameters.
Christian Schlör, Moritz Grünewald, Kevin Popp, Ihsan Murat Kusoglu, Stephan Barcikowski, Stan Gann, Thomas Schuffenhauer, Martin Bastian, Claas Bierwisch, Johannes Rudloff   +9 more
wiley   +1 more source

A Novel Approach on Rapid Alloy Development of Tool Steels for Laser Powder Bed Fusion by In Situ Alloying

Advanced Engineering Materials, EarlyView.
A novel approach for alloy development in laser powder bed fusion is introduced. Instead of producing massive samples of one composition at a time, prepressed powder bed samples produced from powder mixtures are processed. Guidelines for the selection of precursor powders are developed.
Felix Großwendt, Anna Strauch, Jonathan Lentz, Arne Röttger, Rainer Fechte‐Heinen, Sebastian Weber, Werner Theisen   +6 more
wiley   +1 more source

Epidemiology and aetiology of maternal bacterial and viral infections in low- and middle-income countries [PDF]

Journal of Global Health, 2011
Maternal morbidity and mortality in low and middle income countries has remained exceedingly high. However, information on bacterial and viral maternal infections, which are important contributors to poor pregnancy outcomes, is sparse and poorly ...
Prasad Palani Velu , Courtney A. Gravett , Tom K. Roberts , Thor A. Wagner , Jian Shayne F. Zhang , Craig E. Rubens , Michael G. Gravett , Harry Campbell , Igor Rudan   +8 more
doaj  

Setting implementation research priorities to reduce preterm births and stillbirths at the community level. [PDF]

, 2011
Asha George and colleagues from the GAPPS group report the implementation research priorities to address prematurity and stillbirths at the community level that resulted from their recent expert consensus ...
Bang, A, Chan, KY, Chopra, M, GAPPS Expert Group on Community Based Strategies and Constraints, The, George, A, Rubens, C, Rudan, I, Victora, CG, Young, M   +8 more
core  

Enhancing Corrosion Resistance and Mechanical Strength of 3D‐Printed Iron Polylactic Acid for Marine Applications via Laser Surface Texturing

Advanced Engineering Materials, EarlyView.
Laser surface texturing significantly improves the corrosion resistance and mechanical strength of 3D‐printed iron polylactic acid (Ir‐PLA) for marine applications. Optimal laser parameters reduce corrosion by 80% and enhance tensile strength by 25% and ductility by 15%.
Mohammad Rezayat, Mojtaba Karamimoghadam, Mohammadreza Lalegani Dezaki, Ali Zolfagharian, Giuseppe Casalino, Antonio Mateo, Mahdi Bodaghi   +6 more
wiley   +1 more source

Fertility treatment increases the risk of preterm birth independent of multiple gestations

F&S Reports, 2023
Objective: To investigate the complex interplay between fertility treatment, multiple gestations, and prematurity. Design: Retrospective cohort study linking the national Center for Disease Control and Prevention infant birth and death data from 2014 to ...
David C. Fineman, Roberta L. Keller, M.D., Emin Maltepe, M.D., Paolo F. Rinaudo, M.D., Martina A. Steurer, M.D.   +4 more
doaj  

Studies on the Renal Concentrating and Diluting Mechanisms in the Premature Infant12 [PDF]

, 1954
Philip L. Calcagno, Mitchell I. Rubin, David H. Weintraub   +2 more
openalex   +1 more source

Influence of a Hydrogen Addition to the Inert Gas and Subsequent Heat Treatments on the Microstructure and Mechanical Properties of Magnesium WE43 Fabricated by PBF‐LB/M

Advanced Engineering Materials, EarlyView.
This article investigates optimal processing conditions for the laser‐based powder bed fusion of WE43. To limit the interaction with remaining oxygen, a 3 vol% hydrogen admixture to the inert gas is investigated. Furthermore, heat treatments are investigated in the range of 250–350 °C for 48 h.
Arvid Abel, Elmar Jonas Breitbach, Hannes Holländer, Michael Müller, Tjorben Griemsmann, Christian Klose, Jörg Hermsdorf, Hans Jürgen Maier, Stefan Kaierle, Ludger Overmeyer   +9 more
wiley   +1 more source

Assessment of the Awareness of Prematurity and Related Problems

Journal of Pediatric Research, 2017
Aim: Prematurity is an important health problem affecting all segments of society. In this study, we aimed to evaluate the level of awareness of prematurity and related problems. Materials and Methods: A questionnaire consisting of fifteen questions was
Nilgün Kültürsay, Özge Altun Köroğlu, Sirmen Kızılcan, Elif Kocaöğüt, Mehmet Yalaz, Mete Akisü   +5 more
doaj   +1 more source

A CASE OF ENUCLEATION, DURING THE SEVENTH MONTH OF PREGNANCY, OF A UTERINE FIBRO-MYOMA WEIGHING 17½ POUNDS ; PREMATURE LABOUR TWO DAYS LATER. [PDF]

, 1908
Herbert Williamson
openalex   +1 more source