Results 41 to 50 of about 230,162 (306)

Microscopic Insights into Magnetic Warping and Time‐Reversal Symmetry Breaking in Topological Surface States of Rare‐Earth‐Doped Bi2Te3

Advanced Materials, EarlyView.
Magnetic doping of the topological insulator Bi2Te3 with erbium adatoms induces out‐of‐plane magnetism and breaks time‐reversal symmetry, opening a Dirac gap and driving a Fermi surface transition from hexagonal to star‐of‐David geometry. Microscopy, spectroscopy, and magnetic dichroism reveal atomically controlled magnetic interactions that tailor the
Beatriz Muñiz Cano, Fabián Calleja, Ji Dai, Massimo Tallarida, Vera Marinova, Alessandro Barla, Marc G. Cuxart, Pierluigi Gargiani, Gonzalo N. Molina, José Angel Silva‐Guillén, Adriana I. Figueroa, Kevin García‐Díez, Sergio O. Valenzuela, Aitor Mugarza, Amadeo L. Vázquez de Parga, Rodolfo Miranda, Francisco Guinea, Manuela Garnica, Miguel A. Valbuena   +18 more
wiley   +1 more source

Waveguide Photoactuators: Materials, Fabrication, and Applications

Advanced Robotics Research, EarlyView.
Waveguide photoactuators convert guided light into mechanical motion. Their tethered‐flexible design enables minimally invasive surgery and confined‐space robotics. This review aims to guide materials selection, device design, and system integration, accelerating the transition of waveguide photoactuators from laboratory prototypes to versatile ...
Minjie Xi, Hemin Pan, Yang Zong, Yongfeng Mei, Jizhai Cui   +4 more
wiley   +1 more source

The effects of COVID-19 on maternal, newborn and child health services in Papua New Guinea

Global Public Health
Papua New Guinea’s health system faces ongoing challenges in the provision of maternal and child health and has some of the poorest health indicators in the world.
Lisa M. Vallely, Jamee Newland, Nalisa Neuendorf, Agnes Kupul Mek, Rachael Farquhar, Zebedee Kerry, Ruthy Boli-Neo, Mikaela Seymour, Melanie Wratten, Herick Aeno, Richard Nake Trumb, Anna Maalsen, Caroline SE Homer, Angela Kelly-Hanku   +13 more
doaj   +1 more source

Measuring Wasting and Stunting Prevalence Among Children Under 5 Years of Age and Associated Risk Factors in Papua New Guinea: New Evidence From the Comprehensive Health and Epidemiological Surveillance System

Frontiers in Nutrition, 2021
Background: Papua New Guinea (PNG) has undergone a significant health transition, with the prevalence of non-communicable diseases increasing. Many children under 5 years of age suffer from the burden of malnutrition.
Bang Nguyen Pham, Vinson D. Silas, Anthony D. Okely, William Pomat   +3 more
doaj   +1 more source

Astrocyte Enrichment of 3D Cortical Constructs Enhances Brain Repair

Advanced Science, EarlyView.
This study highlights the role of astrocytes in supporting neural progenitor cell survival and differentiation after traumatic brain injury. Astrocytes enhanced neuronal differentiation, improved cell survival in co‐cultures, and promoted integration of microfluidics‐based implants with host tissue following implantation. Additionally, increased axonal
Elisa M. Cruz, Luana C. Soares, Gretchen Greene, Fernando Messore, Mohammed Abuelem, Mingyu Li, Caroline Andersen, Mirriam Domocos, Elisa Vitiello, Rabeah Abdul Razak, Marlene Lawston, Gabriel Moser, Talia Vasaturo‐Kolodner, Mona Barkat, Roslyn M. Bill, Edward Mann, Linna Zhou, Mootaz M. Salman, Hagan Bayley, Zoltán Molnár, Francis G. Szele   +20 more
wiley   +1 more source

Acceptability of self-collected vaginal swabs and point-of-care testing for sexually transmitted and genital infections among pregnant women in Papua New Guinea

Global Public Health
The self-collection of vaginal swabs and point-of-care testing and treatment of sexually transmitted infections (STIs) is reported from several low-and middle-income countries. However, the reporting on women’s experiences of self-collection and same-day
Lisa M. Vallely, Priscilla Poga, Michaela A. Riddell, Handan Wand, Alice Mengi, Steven G. Badman, John Bolnga, Delly Babona, William S. Pomat, Somu Nosi, Andrew J. Vallely, Angela Kelly-Hanku   +11 more
doaj   +1 more source

Gastroschisis in a premature infant in Papua New Guinea: initial treatment with a normal saline bag silo

Rural and Remote Health, 2022
This case report describes the staged management gastroschisis in a low-birthweight baby in Papua New Guinea, where a silo was fashioned using a normal saline bag to protect the bowel, while the baby stabilised and was ready for later abdominal wall ...
E Yakea, Beena Kulau, Jack Mulu, Trevor Duke   +3 more
doaj   +1 more source

Engineered Living Systems With Self‐Organizing Neural Networks: From Anatomy to Behavior and Gene Expression

Advanced Science, EarlyView.
Ectodermal tissue excised from Xenopus embryos self‐organizes into a three‐dimensional mucociliary organoid. Here, we generate a neural variant, termed neurobot, by implanting neural precursor cells. Neurobots develop mature neurons, adopt distinct morphologies, exhibit more complex motility, and respond differentially to neuroactive compounds. Imaging
Haleh Fotowat, Laurie O'Neill, Léo Pio‐Lopez, Megan M. Sperry, Patrick Erickson, Tiffany Lin, Michael Levin   +6 more
wiley   +1 more source

Inhibition of SLC11A1‐Mediated Lysosomal Iron Accumulation in Microglia Promotes Repair Following White Matter Stroke

Advanced Science, EarlyView.
Genetic and pharmacological inhibition of SLC11A1 functioning as an H+/Fe2+ antiporter–mediated lysosomal iron accumulation in microglia promotes lysosomal lumen acidification, increases CTSD expression, enhances lysosomal myelin debris uptake and degradation, and promotes repair following white matter stroke. ABSTRACT White matter stroke (WMS) results
Lingling Qiu, Yajie Zhang, Yushi Tang, Hongli Hu, Ying Zhang, Junwen Xue, Hao Wang, Yecheng Wang, Chunfeng Liu, Jia Jia, Jian Cheng, Yongjun Cao   +11 more
wiley   +1 more source

One size does not fit all: HIV prevalence and correlates of risk for men who have sex with men, transgender women in multiple cities in Papua New Guinea

BMC Public Health, 2019
Background Biobehavioral data about men who have sex with men (MSM) and transgender women (TGW) in Papua New Guinea (PNG) are limited to those who sell sex.
Avi J. Hakim, Kelsey Coy, Steven G. Badman, Barne Willie, Rebecca Narokobi, Josephine Gabuzzi, Simon Pekon, Martha Kupul, Parker Hou, Herick Aeno, Ruthy Neo Boli, Joshua Nembari, Sophie Ase, Angelyne Amos, Nick Dala, Damian Weikum, Steven Callens, John M. Kaldor, Andrew J. Vallely, Angela Kelly-Hanku, on behalf of the Kauntim mi tu Study Team   +20 more
doaj   +1 more source