Results 51 to 60 of about 1,428 (186)

Lobster Eye (LE) X-Ray Optics Demonstrator for CubeSats Applications

Photonics
We present a Lobster Eye (LE) X-ray optics module utilizing Multi-Foil Optics (MFO) technology. Designed for CubeSat-class missions, the system is based on the Schmidt arrangement and consists of two orthogonally oriented submodules composed of smooth ...
Veronika Marsikova, Adolf Inneman, Peter Oberta, Ladislav Pina, Rene Hudec   +4 more
doaj   +1 more source

Lightning electromagnetic emission location using arrival time differencing (LEELA): An introduction to the Met Office's next generation Very Low Frequency lightning location system

Quarterly Journal of the Royal Meteorological Society, EarlyView.
This paper describes the Met Office's new lightning location system LEELA. A brief overview of the upgraded hardware and geolocation algorithms is given. LEELA has improved lightning detection capabilities, especially at night. When comparing LEELA to the previous ATDnet system against ground truths LEELA has 100% storm detection efficiency within 5 km
Graeme Marlton, Mike Protts, Stephen Prust, Edmund Keith Stone, Debbie O'Sullivan, Sue Twelves, Francesco Devoto, Claire Witham   +7 more
wiley   +1 more source

Design of a Novel Gripping Mechanism and Dual Manipulator Robotic System for Apple Harvesting Using Tractor

Journal of Field Robotics, EarlyView.
ABSTRACT The architecture of apple orchards can be converted to easier operation by implementing the use of a low‐cost, tractor‐mounted, dual manipulator based on a robotic harvesting system with lower degrees of freedom (DoF). To accurately avoid injuries by detecting apples, an efferent, real‐time vision system that includes a new gripping mechanism ...
R. M. Rasika D. Abeyrathna, Victor Massaki Nakaguchi, Zifu Liu, Tofael Ahamed   +3 more
wiley   +1 more source

A transmissive x-ray polarimeter design for hard x-ray focusing telescopes [PDF]

SPIE Proceedings, 2015
The X-ray Timing and Polarization (XTP) is a mission concept for a future space borne X-ray observatory and is currently selected for early phase study. We present a new design of X-ray polarimeter based on the time projection gas chamber. The polarimeter, placed above the focal plane, has an additional rear window that allows hard X-rays to penetrate (
Li, Hong, Feng, Hua, Ji, Jianfeng, Deng, Zhi, He, Li, Zeng, Ming, Li, Tenglin, Liu, Yinong, Heng, Peiyin, Wu, Qiong, Han, Dong, Dong, Yongwei, Lu, Fangjun, Zhang, Shuangnan   +13 more
openaire   +2 more sources

Beyond Dexterity: Navigating the Trade‐Offs of Steerable Catheter‐ and Guidewire‐Based Endovascular Robotics for Clinical Applications

SmartBot, EarlyView.
Steerable catheters and guidewires enable precise navigation and intervention in complex vascular anatomies. This review systematically examines their steering mechanisms, including morphological, transmission‐based, and transduction‐based actuation, highlighting their underlying principles and engineering characteristics.
Xunzhi Xie, Yumo Wang, Yihao Zheng, Yang Liu   +3 more
wiley   +1 more source

Cost of Equipping First‐Level Hospitals for Children's Surgical Care in Low‐ and Middle‐Income Countries

World Journal of Surgery, EarlyView.
The Global Initiative for Children's Surgery (GICS) developed the Optimal Resources for Children's Surgical Care (ORECS) recommendations to address disparities in access to high‐quality children's surgery in low‐ and middle‐income countries (LMICs). However, the cost of adequately equipping these hospitals is currently unknown, creating a barrier for ...
Martilord Ifeanyichi, Betel Amdeslassie Fenta, Meskerem Aleka Kebede, Maeve Sofia Bognini, Rachel Hargest, Mohamed Sameh Shalaby, Sarah Cairo, Emmanuel Ameh, Kokila Lakhoo, Rocco Friebel, on behalf of GICS Membership, Hafeez Abdelhafeez, Dayang A. Abdul Aziz, Lukman Olajide Abdur‐Rahman, Simone Abib, Mohammed J. Aboud, Amal Abu. Bakr Abdullah Adam, Maimuna Abubakar, Piero Alberti, Abdelbasit Elsayed Ali, Mohd Yusof Abdullah, Hilda Abellar, Utsav Acharya, Peace Ifeoma Amaraegbulam, Samuel Negash Amde, Gbenou Antoine Seraphin, Marjorie Arca, Jason Axt, Tahmina Banu, Michael Bezuhly, Arpita Biswangree, Marilyn W. Butler, Michael Buzuhly, Sarah B. Cairo, Juan Francisco Campos Rodezno, Maija Cheung, Lohfa Chirdan, Milind Chitnis, Zachary Clapp, Hannah Cockrell, Aline Coltro, Gaurav Deshpande, Mei Diao, Amivi Alice Donou, Beda Espineda, Faye M. Evans, Biniam Ewnte, Jacques Fadhili Bake, Kara Faktor, Diana Lee Farmer, Ilijana Gaffar, Michael Ganey, Zipporah Gathuya, J. F. Gonzalez‐Zamora, Christa N. Grant, Rebecca Crane Gray, Ahmed Hasnaien, Mathula Hettiarachchi, Phillip Hsu, Wala Mohammed Ibrahim Rahma, Romeo C. Ignacio, Sophie Inglin, Saleem Islam, Reuel Kageni Maina, Nathan Ezie Kengo, Phyllis Kisa, Kokila Lakhoo, Monica Langer, Basil Leodoro, Judith Lindert, Pablo Andrés Lobos, Katrine Løfberg, Vrisha Madhuri, Erick Martin Yturralde, Dennis Mazingi, Elizabeth Jane Mcleod, John G. Meara, Felicity Vidya Mehendale, Felicity Vidya Mehendale, Leecarlo Milano, N. A. Mohd Hanifah, Amabelle Moreno, Yves Mpongo, Salehe Mrutu, Abirami Muthumani, Shireen Anne Nah, Bindi Naik‐Mathuria, Biplab Nandi, Ramesh M. Nataraja, Charles Newton Odongo, Stella Alice Nimanya, Cathrine Nixon, Angélique Ntegerejuwampaye, Nkeiruka Obi, Aderonke Omoyeni Obisesan, Agneta Odera, Lucienne Irene Patricia Ondima, Maryrose O. Osazuma, Emmanuel Owusu Ofori, Doruk Ozgediz, Hector Alberto Pacheco Cesar, Nirav Patel, Shazia Peer, Janey Phelps, Mercedes Pilkington, Dan Poenaru, Vinitha Ravindran, Udo Rolle, Lily Saldaña Gallo, Abdullah Saleh, Lubna Samad, Sabrina Sedano, Bijaya Kumar Sethi, Justina Seyi‐Olajide, Mohamed Sameh Shalaby, Mehek Sharma, Sabina Siddiqui, Caroline Stephens, Judith Stoltz, Nabila Talat, Warwick J. Teague, Gonca Tekant, Nadyn Tumba Kapaso, Barbara Wildhaber, Ava C. Yap, Nelci Zanon, Madhushree Zope   +126 more
wiley   +1 more source

Cis–Trans Rotational Isomerism of Formic Acid, Sulfur, and Selenium Analogues and Their Dimers: Chemical Kinetics Under Interstellar Conditions

International Journal of Chemical Kinetics, Volume 58, Issue 12, Page 1136-1145, December 2026.
ABSTRACT We present chemical kinetic rate constants for the cis to trans isomerisation or rotamerization of monomeric seleno‐, thio‐, and formic acids and that of three of their dimeric species, based on variational transition state theory and multidimensional tunneling calculations in the gas‐phase, from 10 K to 300 K. These provide, firstly, reliable
Judith Wurmel, John M. Simmie
wiley   +1 more source

Modular and Stereoselective Synthesis of Cyclobutane β‐Amino Alcohols

Angewandte Chemie, Volume 138, Issue 43, 19 October 2026.
Late‐stage functionalization and photoisomerization of 1,2‐azaborine leads to a general strategy for the synthesis of diversely substituted cyclobutane β‐amino alcohols. The relative stereochemistry of the resulting products is unambiguously defined by the stereospecific and stereoselective nature of the photoisomerization‐hydrogenation‐oxidation ...
Xinyu Yang, Tomoya Ozaki, Bo Li, Shih‐Yuan Liu   +3 more
wiley   +2 more sources

A wide-field X-ray search for the Geminga pulsar halo with SRG/ART-XC

Astronomy & Astrophysics
Searches for the putative large-scale X-ray halo around the Geminga pulsar have been extensively performed using various narrow field-of-view X-ray telescopes. In this paper, we present wide-field scanning observation of Geminga with SRG/ART-XC.
Krivonos Roman, Manconi Silvia, Arefiev Vadim, Bykov Andrei, Donato Fiorenza, Filippova Ekaterina, Lutovinov Alexander, Di Mauro Mattia, Mori Kaya, Tkachenko Alexey, Woo Jooyun   +10 more
doaj   +1 more source

A Systematic Study of Inverting Overlappograms: MaGIXS—A Case Study

The Astrophysical Journal
Slitless (or wide-field) imaging spectroscopy provides simultaneous imaging and spectral information from a wide field of view, allowing for rapid spectroscopic data collection from extended sources. Depending on the size of the extended source, combined
P. S. Athiray, Arthur Hochedez, Amy R. Winebarger, Dyana Beabout   +3 more
doaj   +1 more source