An amperometric magnetoimmunosensor for the determination of human p53 protein is described in this work using a sandwich configuration involving the covalent immobilization of a specific capture antibody onto activated carboxylic-modified magnetic beads (HOOC-MBs) and incubation of the modified MBs with a mixture of the target protein and horseradish peroxidase-labeled antibody (HRP-anti-p53)....

Hydroquinone was found to suppress bubble formation at the outlet electrode of a sheathless capillary electrophoresis/electrospray ionization-mass spectrometer by replacing the oxidation of water (2H2O(1)<-->O2(g) + 4H+ + 4e) with that of more easily oxidized hydroquinone (hydroquinone<-->p-benzoquinone + 2H+ + 2e). Formation of p-benzoquinone replaces the formation of oxygen gas, effectively s...

Objectives Based on the concept of health quotient (HQ), we designed and facilitated personalized plans to improve patients' compliance and oral health. The study aims to increase HQ level of patients with chronic periodontitis from four aspects, namely self-care, health knowledge, lifestyle, and mental health, and evaluate the effects of HQ training in maintaining oral health. Method In tota...

Enhanced-efficiency nitrogen fertilizer (EENF) is a recommend for rice production because of its advantage on improving use efficiency. However, efficacy CH4, the dominant greenhouse gas, emission from fields showed great variation under field conditions. And factors influencing are still unclear. We synthesized results 46 studies and analyzed impact product type, variety, primary agronomic mea...

Pancreatic ductal adenocarcinoma (PDAC) is the solid tumor with worst prognosis, representing today third cause of cancer-related deaths in developed countries and expected to be second 2030. Today, CA19-9 remains only clinically used marker for management PDAC (FDA-approved as a disease monitoring marker). This work reports disposable amperometric immunoplatform determination CA19-9. The skilf...

In this microcosm study, we analyzed the effect produced by hydroquinone on the expression of soil biological denitrification, in relation to the redox state of the soil, both in terms of intensity factor (Eh') and capacity factor (amount of oxidized or reduced compounds). The supplementation of an Argiudoll soil with hydroquinone decreased the soil apparent reduction potential (Eh') and soil d...

Background and aims: Melasma is an acquired hyperpigmentation on the face, which generally happens in women between the ages of 30 to 35. If treatment is not performed in a timely manner, many cosmetic problems can arise. The aim of this study was to compare the effects of kojic acid and hydroquinone 2% creams for the treatment of melasma. Methods: 100 women with epidermic melasma who were refe...

The phenolic glycoside arbutin and its metabolite with uroantiseptic activity hydroquinone occur naturally in the leaves of various medicinal plants and spices. In this study, an extraction procedure coupled with gas chromatography-mass spectrometry (GC-MS) was developed to determine arbutin and hydroquinone content in strawberry tree (Arbutus unedo L., Ericaceae) leaves. The method showed good...

This paper describes the first immunosensing system reported for the detection of bacteria combining immunomagnetic capture and amperometric detection in a one-step sandwich format, and in a microfluidic environment. Detection is based on the electrochemical monitoring of the activity of horseradish peroxidase (HRP), an enzyme label, through its catalysis of hydrogen peroxide (H(2)O(2)) in the ...