Results 61 to 70 of about 258,875 (317)
Iron‐Mediated Release of Aged Dissolved Organic Carbon From Waterlogged Peatland Under Warming
Advanced Science, EarlyView.This study conducts a five‐year in situ warming experiment in high‐altitude peatlands to examine dissolved organic carbon (DOC) release. The study shows that warming promotes the release of plant‐derived modern DOC in drained peatlands, but amplifies aquatic export of century‐old DOC from waterlogged peatlands via Fe‐mediated DOC mobilization—a ...
Guohua Dai +18 more
wiley +1 more source
Determination Of Tin In Lead-Base, Copper-Base And Iron-Base Alloys By Spectrophotometry And Graphite Furnace Atomic Absorption Spectrophotometry [PDF]
, 1987 This method development study of tin determination in alloys is divided into three parts, namely visible spectrophotometry,flameless atomic absorption spectrophotometry ( FAAS ) and classical methods.
Jais, Umi Sibyan
core +1 more source
Advanced Science, EarlyView.ABSTRACT Current prostate cancer detection methods remain limited in non‐invasiveness and specificity, prompting interest in urinary biomarkers such as sarcosine. Here, we report a urine‐powered wearable platform for non‐invasive sarcosine detection as a proof‐of‐concept for decentralized early warning.
Jing Xu +10 more
wiley +1 more source
Advanced Science, EarlyView.ABSTRACT Infected diabetic wounds are sustained by a vicious cycle of hyperglycemia‐driven bacterial infection, persistent oxidative stress, and excessive inflammation, which collectively disrupt the ordered progression of tissue repair. Here, we engineered a stage‐adaptive Janus microneedle patch (MN‐FeSAC‐PPE) to enable a staged therapeutic process ...
Mengting Yin +13 more
wiley +1 more source
Study of the ascorbic acid accumulation in Thymus L. genus species of Ukraine flora
Aktualʹnì Pitannâ Farmacevtičnoï ì Medičnoï Nauki ta PraktikiThe Thymus L. genus species are extremely widespread in temperate countries and number up to 200 main wild plants, of which up to 50 have been identified in the modern Ukraine flora. Extracts from the official species of the Thymus L.
O. V. Mazulin +3 more
doaj +1 more source
Determination Of Sun Protection Factor By Uv-Vis Spectrophotometry
, 2016 Background: Sunscreen products contain active ingredients that can absorb, reflect or scatter the sunlight, depending on their nature. We can evaluate the effectiveness of a sunscreen by determining the sun protection factor (SPF).
R. Nobre, A. P. Fonseca
semanticscholar +1 more source
Progress in orthodontics, 2015 The aim was to assess and compare absorbance and transmittance values of three types of clear orthodontic aligners before and after two cycles of in vitro aging.
L. Lombardo +5 more
semanticscholar +1 more source
Advanced Science, EarlyView.A piezocatalytic strategy enables simultaneous wastewater purification and hydrogen generation by harnessing mechanical energy. Complementary piezo‐induced charges are selectively directed toward oxidation and reduction pathways, achieving efficient pollutant degradation and continuous H2 evolution.
Yiqing Wei +8 more
wiley +1 more source
Influence of Metal Ion Complexation on the Acid Dissociation of 4'-Carboxybenzo-24-Crown-8 in an Ethanol-Water Mixture [PDF]
Iranian Journal of Chemistry & Chemical Engineering, 1997 A spectrophotometric method was used to determine the acidity constant of 4'-carboxybenzo-24-crown-8 in 52% (w/w) ethanol-water mixture. The acid dissociation constant, Ka, was found to increase in the presence of Na+, K+, Rb+, Cs+ and Tl+ ions.
Ahmad Rouhollahi +3 more
doaj
Window of Health, 2019 Vitamin C is one of the nutrients that act as antioxidants derived from fruits and green vegetables, such as the pomegranate (Punica granatum L.). This study aims to analisis levels of vitamin C in meat pomegranate (Punica granatum L.) red and white with
Andi Maulana +3 more
doaj +1 more source