Results 71 to 80 of about 857,975 (310)

First Stars III Conference Summary

, 2008
The understanding of the formation, life, and death of Population III stars, as well as the impact that these objects had on later generations of structure formation, is one of the foremost issues in modern cosmological research and has been an active ...
Abel, Tom, Heger, Alexander, McKee, Christopher F., O'Shea, Brian W.   +3 more
core   +1 more source

Serum 25-hydroxyvitamin D levels in hospitalized adults with community-acquired pneumonia [PDF]

, 2018
Introduction: Community‐acquired pneumonia (CAP) is the infectious disease with the highest number of deaths worldwide. Several studies have shown an association between vitamin D deficiency and increases susceptibility to respiratory tract infections ...
Bool, British Thoracic Society Research Committee and the Public Health Laboratory Service, Charlson, Cukic, Fine, Gombart, Haan, Huang, Jolliffe, Kamen, Karonova, Kim, Kochanek, Lim, Liu, Lu, Luna, Mandell, Niederman, Pletz, Remmelts, Ross, Røysted, Schnoor, Schöttker, Toubi, Welte, Youssef   +27 more
core   +1 more source

Photoelectrochemical Hydrogen Production Using TiO2/Mn‐CdS Photoanode with ZnS Passivation and CoPi as Hole Transfer Relay

Advanced Sustainable Systems, EarlyView.
The electrode features TiO2 as a stable UV‐absorbing substrate, Mn‐doped CdS to extend light absorption into the visible range, ZnS to prevent CdS photocorrosion, and an outer cobalt phosphate (CoPi) that catalyzes oxygen evolution, efficiently enhancing hole transfer from the photoanode to the electrolyte.
Hwapyong Kim, Chaitanya B. Hiragond, Sung Wook Koo, Orim Lee, Su‐Il In   +4 more
wiley   +1 more source

Hyperandrogenemia Induces Trophoblast Ferroptosis and Early Pregnancy Loss in Patients With PCOS via CMA‐Dependent FTH1 Degradation

Advanced Science, EarlyView.
In PCOS patients with hyperandrogenemia, decreased ferritin heavy chain 1 (FTH1) causes Fe2⁺ overload and ferroptosis in trophoblasts. Androgens induce FTH1 protein degradation via AR‐LAMP2A‐mediated chaperone‐mediated autophagy pathway, leading to placental development disruption and early pregnancy loss. Metformin mitigates androgen‐induced placental
Hanjing Zhou, Weijie Yang, Na Liu, Qing Liu, Jiamin Jin, Chenqiong Zhao, Xiaoying Jin, Miao Gui, Haiyan Zhu, Songying Zhang, Yinli Zhang   +10 more
wiley   +1 more source

PD-L1 expression in gastric cancer assessed with antibodies 28-8 and 22C3

Scientific Reports
Programmed cell death ligand 1 (PD-L1) has emerged as a key biomarker in determining both the progression and prognosis of gastric cancer (GC). Consequently, its detection through immunohistochemical (IHC) analysis is essential for guiding appropriate ...
Erick Andrés Cantor, Andrés Felipe Bejarano-Ramírez, Laura Chacón Zambrano, Iván Camilo Triana, Henry Alexander Vargas, Javier Mauricio Segovia, Luis Eduardo Pino, John Alejandro Murillo, Roció López   +8 more
doaj   +1 more source

Thermal Stability of Self-Assembled Monolayers of n-Hexanethiol on Au(111)-(1 × 1) and Au(001)-(1 × 1) [PDF]

, 2017
Thermal desorption in an ultrahigh vacuum of n-hexanethiol (C6T) self-assembled monolayers (SAMs) prepared from ethanolic solutions on Au(111) and Au(001) unreconstructed surfaces was investigated by X-ray photoelectron spectroscopy.
Afeefy H. Y., Gustavo Ruano, Julio Ferrón, Lucila J. Cristina, Moulder J. F., Roberto Salvarezza   +5 more
core   +2 more sources

Tailoring Vascular‐Immune Homeostasis via Manganese‐DNA Complex‐Armed Immunogenic Extracellular Vesicles for Pancreatic Cancer Immunotherapy

Advanced Science, EarlyView.
This study demonstrates that Mn2⁺–tumor DNA complexes encapsulated in dendritic cell (DC)– derived immunogenic extracellular vesicles (EVDC@Mn‐DNA) act as a DC‐specific cGAS– STING activator. EVDC@Mn‐DNA treatment enhances intratumoral DC activation, improves tumor vascular function, promotes CD8⁺ T cell activity, and suppresses pancreatic tumor growth,
Xue Jiang, Lihuan Shang, Xiaochun Chen, Xiangzhan Kong, Xiaojuan Wang, Linjia Jiang, Huiying Zhao, Yafeng Zhu, Cheng Huang, Shiyi Deng, Rui Zhang, Minghui Wang, Haoming Lin, Ping‐Pui Wong   +13 more
wiley   +1 more source

Paradoxes in leaky microbial trade

Nature Communications, 2017
Microbes live in communities and exchange metabolites, but the resulting dynamics are poorly understood. Here, the authors study the interplay between metabolite production strategies and population dynamics, and find that complex and unexpected dynamics
Yoav Kallus, John H. Miller, Eric Libby
doaj   +1 more source

Tendon Organoids Enable Functional Tendon Rejuvenation Through ALKBH5‐Dependent RNA Demethylation

Advanced Science, EarlyView.
FT organoids reverse the aged phenotype of tendon cells, reinstating a fetal‐like state. This breakthrough establishes a potent cell source for tendon tissue engineering, effectively advancing regenerative medicine. ABSTRACT Adult tendon injuries pose a major clinical challenge due to limited self‐repair capacity, resulting in suboptimal regeneration ...
Tian Qin, Aini Pan, Zhuoning Miao, Yanyan Zhao, Xianan Mo, Heng Sun, Chunmei Fan, Junyu Guo, Bingbing Wu, Weiliang Shen, Qiangqiang Zheng, Jun Lu, Xi Jiang, Zi Yin, Xiao Chen   +14 more
wiley   +1 more source

Interacción agua-sedimentos-trazador fluorescente en un reactor. Medición de flóculos

Cuadernos del CURIHAM, 2019
El objetivo fue estudiar en condiciones controladas de laboratorio la interacción entre el trazador fluorescente Amidorodamina G y sedimentos del río Salado (Santa Fe), con d50=11.6 mm y 97% de sedimentos finos.
Alex Wolfenson, Verónica Lanza, Lucas Palman, Matias Imhoff, Ana Alvarez, Alfredo Trento   +5 more
doaj   +1 more source