Results 131 to 140 of about 211,583 (346)

Exploring Physically Motivated Models to Fit Gamma-Ray Burst Spectra

The Astrophysical Journal, 2023
We explore fitting gamma-ray burst (GRB) spectra with three physically motivated models, and thus revisit the viability of synchrotron radiation as the primary source of GRB prompt emission. We pick a sample of 100 bright GRBs observed by the Fermi Gamma-
S. Poolakkil, R. Preece, P. Veres
doaj   +1 more source

Neutrino and cosmic-ray emission from multiple internal shocks in gamma-ray bursts [PDF]

Nature Communications, 2014
Gamma-ray bursts (GRBs) are short-lived, luminous explosions at cosmological distances, thought to originate from relativistic jets launched at the deaths of massive stars.
M. Bustamante, P. Baerwald, K. Murase, W. Winter   +3 more
semanticscholar   +1 more source

ROS‐Responsive Microneedle Patches Enable Peri‐Lacrimal Gland Therapeutic Administration for Long‐Acting Therapy of Sjögren's Syndrome‐Related Dry Eye

Advanced Science, EarlyView.
A new strategy for constructing smart gel‐based MN patches is developed to overcome the insufficient drug delivery of eye drops to the lacrimal gland. The gel‐based MN patches achieved long‐acting drug release in a ROS‐responsive manner, and separable base in a temperature‐responsive manner.
Jingqing Mu, Xiangyu Ding, Yapeng Song, Baoyue Mi, Xiaolong Fang, Baihua Chen, Bin Yao, Xuguang Sun, Xiaoyong Yuan, Shutao Guo, Xia Hua   +10 more
wiley   +1 more source

[Ag(μ‐en)][ReO4]: An Intermediate during Preparation of the Ethylene Epoxidation Catalyst

Zeitschrift für anorganische und allgemeine Chemie, Volume 648, Issue 23, December 13, 2022., 2022
Abstract Preparation of a catalyst for the ethylene oxide production requires impregnation of a porous corundum support with an aqueous silver ethylene diamine oxalate complex solution, to which among others NH4[ReO4] is added. Here we report on [Ag(μ‐en)][ReO4] that precipitates from such a mixture.
Désirée Badea, Andrey Karpov, Martin Jansen, Jörn Bruns   +3 more
wiley   +1 more source

Advancements in Biochar as a Sustainable Adsorbent for Water Pollution Mitigation

Advanced Science, EarlyView.
Biochar, obtained through pyrolysis of organic waste, serves as a sustainable solution for wastewater treatment due to its adaptability and low‐cost nature. This review comprehensively examines recent advancements in biochar production, functional modifications, and applications, highlighting the integration of machine learning and artificial ...
Devika Laishram, Su‐Bin Kim, Seul‐Yi Lee, Soo‐Jin Park   +3 more
wiley   +1 more source

Vitamin D—A prominent immunomodulator to prevent COVID‐19 infection

International Journal of Rheumatic Diseases, Volume 26, Issue 1, Page 13-30, January 2023., 2023
Abstract COVID‐19 remains a life‐threatening infectious disease worldwide. Several bio‐active agents have been tested and evaluated in an effort to contain this disease. Unfortunately, none of the therapies have been successful, owing to their safety concerns and the presence of various adverse effects.
Sumel Ashique, Kirti Gupta, Gaurav Gupta, Neeraj Mishra, Sachin Kumar Singh, Sheetu Wadhwa, Monica Gulati, Harish Dureja, Flavia Zacconi, Brian G. Oliver, Keshav Raj Paudel, Philip M. Hansbro, Dinesh Kumar Chellappan, Kamal Dua   +13 more
wiley   +1 more source

The X-ray Bursts from the Magnetar Candidate 1E 2259+586 [PDF]

arXiv, 2004
We present a statistical analysis of the X-ray bursts observed from the 2002 June 18 outburst of the Anomalous X-ray Pulsar (AXP) 1E 2259+586, observed with the Proportional Counter Array aboard the Rossi X-ray Timing Explorer. We show that the properties of these bursts are similar to those of Soft Gamma-Repeaters (SGRs). The similarities we find are:
arxiv  

X-ray Reflection and An Exceptionally Long Thermonuclear Helium Burst from IGR J17062-6143 [PDF]

, 2016
Thermonuclear X-ray bursts from accreting neutron stars power brief but strong irradiation of their surroundings, providing a unique way to study accretion physics. We analyze MAXI/GSC and Swift/XRT spectra of a day-long flash observed from IGR J17062-6143 in 2015.
arxiv   +1 more source

Verteporfin‐Mediated In Situ Nanovaccine Based on Local Conventional‐Dose Hypofractionated Radiotherapy Enhances Antitumor and Immunomodulatory Effect

Advanced Science, EarlyView.
Here gelatinase‐responsive methoxypolyethyleneglycol–PVGLIG–polycaprolactone (mPEG–PVGLIG–PCL) nanoparticles’ loading verteporfin (N@VP) is developed, enhancing radiotherapy via X‐ray‐triggered singlet oxygen generation. Combined with 2 Gy (gray, a radiation dose unit) irradiation, N@VP achieves antitumor efficacy comparable to 8 Gy, and also promotes ...
Zhifan Zhang, Lin Li, Yuchen Ge, Anni Chen, Shanchao Diao, Yueling Yang, Qianyue Chen, Yingling Zhou, Jie Shao, Fanyan Meng, Lixia Yu, Manman Tian, Xiaoping Qian, Zhaoyu Lin, Chen Xie, Baorui Liu, Rutian Li   +16 more
wiley   +1 more source

H2S Sensing with SnO2‐Based Gas Sensors: Sulfur Poisoning Mechanism Revealed by Operando DRIFTS and DFT Calculations

Angewandte Chemie, EarlyView.
The formation of sticky sulfite and sulfate surface species is identified as the root cause of the poisoning effect of H2S on SnO2‐based sensors by the compelling results and detailed analyses from operando DRIFTS experiments and density functional theory (DFT) calculations.
Tingqiang Yang, Matthias Boepple, Anne Hémeryck, Antoine Jay, Sara Karwounopoulos, Udo Weimar, Nicolae Barsan   +6 more
wiley   +2 more sources