Results 61 to 70 of about 15,360 (259)

Self‐Sustaining Lactate Depletion Nanoplatform Remodels Tumor Microenvironment and Augments Synergistic Photodynamic/Photothermal/Chemodynamic/Starvation Therapy for Eradication of Colon Cancer

open access: yesAdvanced Science, EarlyView.
The HILA nanoplatform integrates HMnO2, LOX, and ICG to orchestrate multimodal therapy (starvation, chemodynamic, photodynamic, and photothermal) for achieving efficient colon cancer eradication. The established HMnO2‐LOX catalytic cycle continuously consumes lactate, acidifys microenvironment, relieves hypoxia, and generats reactive oxygen species ...
Yu‐E. Wang   +11 more
wiley   +1 more source

Boosting Photocatalytic Overall Water Splitting Activity of Phosphorene Through Five‐Coordinate Passivation Enabled by Carbene Addition

open access: yesAngewandte Chemie, EarlyView.
We report selective five‐coordinate passivation of phosphorene via P═C double bonds using a facile one‐step photochemical reaction via carbene addition. The ambient stability of functionalized phosphorene has been substantially improved compared to the pristine phosphorene.
He Zhang   +12 more
wiley   +2 more sources

Cerium Nanoparticle‐Mediated Inhibition of the NSUN2/m5C Axis Suppresses Synovial Aggression in Rheumatoid Arthritis

open access: yesAdvanced Science, EarlyView.
A novel epitranscriptomic mechanism in rheumatoid arthritis is uncovered: NSUN2 promotes disease via m5C‐dependent stabilization of ICMT mRNA, fueling the migration and invasion of pathogenic RA FLS. Targeting this axis with engineered nanoparticles (Ce/SAA NPs) effectively inhibits disease progression, presenting a precise therapeutic strategy ...
Ruiru Li   +15 more
wiley   +1 more source

Oral Prebiotic Polysaccharide Hydrogels Sustaining Colon Antibody Release Alleviate Inflammatory Bowel Disease

open access: yesAdvanced Science, EarlyView.
An orally administered prebiotic polysaccharide hydrogel (predaGel) based on inulin and alginate‐dopamine is stable in the stomach, adheres to the intestine, and degrades slowly in the colon. It enables site‐specific delivery of anti‐TNF‐α and anti‐IL‐12/23 antibodies, scavenges reactive oxygen species, and remodels gut microbiota, offering effective ...
Xinyi Dong   +4 more
wiley   +1 more source

Analysis of Mercurial Preservatives in Different Vaccines by Cold Vapor Atomic Absorption Spectrophotometry

open access: yesJournal of Analytical Science and Technology, 2012
Vaccines with low concentration of mercurial preservatives, such as thiomersal, are in use in Albania. A simple and a sensitive method by using CVAAS method for the determination of mercury in vaccine samples is described.
Pranvera Lazo, Merita Kucuku
doaj  

Microenvironment‐Responsive Nanomedicine Enables Vertical Modulation of Mitochondrial Pathological Networks in Myocardial Ischemia–Reperfusion Injury

open access: yesAdvanced Science, EarlyView.
A mitochondria‐targeted, microenvironment‐responsive nanoplatform enables pH/ROS‐triggered co‐delivery of berberine and isoliensinine to orchestrate ROS scavenging, inflammation suppression, and apoptosis inhibition. This vertical modulation of mitochondrial pathological networks preserves mitochondrial function and effectively mitigates myocardial ...
Jue Wang   +11 more
wiley   +1 more source

Cuantificación de metales pesados (Hg, As, Pb y Cr) en organismos acuáticos: cangrejo rojo (Ucides occidentalis)

open access: yesCiencia UNEMI, 2015
The objective of this research was to determine by atomic absorption spectrophotometry (AAS), the concentration of heavy metals (lead, chromium, arsenic and mercury) in the soft tissue of the red crab (Ucides occidentalis).
Ayala-Armijos, Humberto   +4 more
doaj  

STUDY ON THE DYNAMICS OF FOOD CONTAMINATION IN INDUSTRIALIZED AREA [PDF]

open access: yesAnnals of the University of Oradea: Economic Science, 2010
The paper approaches the food contaminations with chemical substances in industrialized area (in an area intensely polluted with heavy metals). We firstly studied accumulation in several types of vegetable matter and secondly, the evolution in time of ...
TOMESCU ADA MIRELA   +3 more
doaj  

Studies on Atomic-absorption Spectrophotometry. III. Determination of Nickel in Iron and Steel by Atomic-absorption Spectrophotometry

open access: yesThe Journal of the Society of Chemical Industry, Japan, 1963
原子吸光分光光度法による鉄鋼中のニッケルの定量を研究した。原子吸光分光光度法で,ニッケルの定量をおこなう場合,鉄は10mg/ml以下ならばニッケルの吸収に影響を与えなかった。また,その他の元素もモリブデン酸,リン酸塩,硫酸塩以外は,ニッケルの測定に障害をあたえなかった。モリブデン酸,リン酸塩,硫酸塩が共存するとニッケルの吸収が増大した。しかし,その程度はわずかであり,しかも鉄,クロムなどがかなりの量共存すると,これらの影響は消失した。鉄鋼中のニッケルは試料を酸で分解し,そのまま炎中に噴霧して吸収を測定することにより定量することができる。微量のニッケルを定量する場合には,ニッケルをジエチルジチオカルバミン酸錯化合物として,メチルイソブチルケトンで抽出し,噴霧する方法が適当であった。多量の試料を用い ...
Tsugio Takeuchi   +2 more
openaire   +2 more sources

Home - About - Disclaimer - Privacy