Results 111 to 120 of about 444,692 (336)

Sequential injection analysis determination of sulphate in wastewaters by ultraviolet-spectrophotometry

open access: yesJournal of the Brazilian Chemical Society, 2000
A sequential injection analysis system based on the formation of the cation FeSO4+ and the spectrophotometric measuring of the absorbance at 355 nm has been developed for the determination of sulphate in wastewaters.
Lapa Rui A. S.   +2 more
doaj  

DNA Origami‐Based CD44‐Targeted Therapy Silences Stat3 Enhances Cartilage Regeneration and Alleviates Osteoarthritis Progression

open access: yesAdvanced Science, EarlyView.
This study develops a cartilage‐targeted DNA origami system (OCS) that protects and delivers si‐Stat3 to chondrocytes. OCS reduces MMP13 expression, enhances extracellular matrix stability, and lowers oxidative stress while improving cell survival. In vivo, OCS decreases cartilage degradation biomarkers and promotes tissue repair factors, demonstrating
Qi Lv   +8 more
wiley   +1 more source

Improved ultraviolet spectrophotometry of serum theophylline.

open access: yesClinical Chemistry, 1978
Abstract We present an improved method for ultraviolet spectrophotometry of theophylline in serum. We studied various extraction techniques aimed at eliminating interferences from co-extractable serum constituents. In the resulting modified procedure, 1 ml of serum is required and a salt-solvent pair of ammonium sulfate and chloroform ...
K Blum, P Carter, J E Wallace
openaire   +3 more sources

Ultrasound‐Responsive Piezoelectric Membrane Promotes Osteoporotic Bone Regeneration via the “Two‐Way Regulation” Bone Homeostasis Strategy

open access: yesAdvanced Science, EarlyView.
Patients with osteoporosis face a higher risk of bone injury, mainly due to weakened osteogenic differentiation and bone formation, along with increased osteoclast differentiation and bone resorption activity, leading to bone homeostasis imbalance.
Xinhui Wu   +13 more
wiley   +1 more source

Rational Molecular Engineering of Amidonaphthoquinone Cathodes: Precise Hydrogen Bond and Size Control for High‐Performance Lithium Organic Batteries

open access: yesAdvanced Science, EarlyView.
This work provides a novel molecular design strategy to develop three naphthoquinone‐derived cathodes (NQ1, NQ2, and NQ3) by linking one, two, and three amido‐naphthoquinone redox centers onto a benzene ring in a convenient way. Structure evolution to increased hydrogenbonds and molecular size enables high performance LOBs by joint solubility suppress ...
Qianglong Chen   +4 more
wiley   +1 more source

Using Highly Functional Cr2O3 Interfacial Layer to Enhance the Electrical Performance of Au/InP Schottky Diodes

open access: yesAdvanced Electronic Materials, EarlyView.
The authors report on the significant impact of the spin‐coated Cr2O3 interface layer on the electrical properties and performance characteristics of Au/undoped‐InP (Au/InP) Schottky diodes (SD). The results and approach convincingly demonstrate the potential application of the Cr2O3 interfacial layer in delivering enhanced performance and contributing
Sreedhar Gari Sai Krupa   +4 more
wiley   +1 more source

Applied ultraviolet spectrophotometry of fats and oils [PDF]

open access: yesOil & Soap, 1946
The chemist has in the spectrophotometric method a rapid and simple means of studying changes in the double bond systems of fatty acids. The method is highly sensitive. It has found application in studies of processing of oils, improvement of drying oils, catalytic hydrogenation, routine analytical work, soap and tallow control, as well as in nutrition
openaire   +2 more sources

Multifunctional Framework Nucleic Acid Vehicle for Antibiotic Sensitization and Treatment of Methicillin‐Resistant Staphylococcus aureus

open access: yesAggregate, EarlyView.
A self‐assembling, aggregation‐enhanced tetrahedral DNA nanostructure (tFNA), termed TACs, enables localized accumulation and sustained release of ceftriaxone while co‐delivering antisense oligonucleotides that silence mecA, reduce PBP2a expression, and restore β‐lactam susceptibility in MRSA.
Yicheng Zhao   +10 more
wiley   +1 more source

Antistatic sprays [PDF]

open access: yes
Antistatic sprays from several different manufacturers are examined. The sprays are examined for contamination potential (i.e., outgassing and nonvolatile residue), corrosiveness on an aluminum mirror surface, and electrostatic effectiveness. In addition,
Ming, James E.
core   +1 more source

Silver nanoparticles synthesized biogenically from Aloe fleurentiniorum extract: characterization and antibacterial activity

open access: yesGreen Chemistry Letters and Reviews, 2020
The biogenic synthesis of silver nanoparticles (AgNPs) using Aloe fleurentiniorum extract and antibacterial activity of the synthesized AgNPs were investigated.
Saleh H. Salmen, Sulaiman Ali Alharbi
doaj   +1 more source

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