Results 51 to 60 of about 445,251 (307)

Intermittent type silica gel adsorption refrigerator Patent [PDF]

open access: yes, 1966
Intermittent type silica gel adsorption refrigerator for providing temperature control for spacecraft ...
Romvary, E., Jr., Vickers, J. M. F.
core   +1 more source

The micromethod for determination of cholesterol, cholesteryl esters and phospholipids [PDF]

open access: yes, 1974
We examined the method for determining microquantities of lipids, including cholesterol, cholesteryl esters and phospholipids. A standard colorimetric procedure of cholesteryl esters was modified to accommodate a quantitative thin-layer chromatography ...
Kanemasa, Yasuhiro   +2 more
core   +1 more source

Highly Sensitive Electrochemical Biosensor Based on Hairy Particles with Controllable High Enzyme Loading and Activity

open access: yesAdvanced Functional Materials, EarlyView.
For the first time, a highly sensitive electrochemical biosensor based on SiO2‐based hairy particles with a grafted PDMAEMA polymer brush containing a quantifiable and large amount of immobilized Laccase is reported. The fabricated biosensor exhibits a sensitivity of 0.14 A·m⁻¹, a limit of detection (LOD) of 0.1 µm, and a detection range of 0.3–750 µm,
Pavel Milkin   +7 more
wiley   +1 more source

SOD activity of immobilized enzyme mimicking complexes [PDF]

open access: yes, 2003
A binuclear, imidazolato-bridged, possible superoxide dismutase-mimicking complex (Cu(II)-diethylenetriamino-μ-imidazolato-Zn(II)-tris-aminoethylamine-triperchlorate) was prepared and immobilized on silica gel or among the layers of montmorillonite.
Hernádi, Klára   +4 more
core  

Tuning the Dielectric Properties of Individual Clay Nanosheets by Interlayer Composition: Toward Nano‐Electret Materials

open access: yesAdvanced Functional Materials, EarlyView.
The dielectric properties of clays are studied on the level of individual monolayers and functional double stacks. The material breakdown characteristics and charge storage performance are analyzed. For illustration, a defined charge pattern representing a cuneiform character is produced, written into a microscopic clay tile, referencing the origins of
Sebastian Gödrich   +6 more
wiley   +1 more source

Effect of Wood Fiber on the Strength of Calcareous Sand Rapidly Seeped by Colloidal Silica [PDF]

open access: yesMATEC Web of Conferences, 2019
Silica nano-particles are suspended in the colloidal silica and can be induced to gradually gel after the PH value changes. Thus colloidal silica can be utilized to rapidly seep through loose calcareous sand, and the silicon gel is gradually formed to ...
Jin Weifeng   +3 more
doaj   +1 more source

Liquid Phase Transmission Electron Microscopy: A Window into the Early Stages of Complex Material Formation

open access: yesAdvanced Functional Materials, EarlyView.
Liquid‐phase transmission electron microscopy enables direct observation of nucleation and growth processes in solution. This review is dedicated to the remembrance of Helmut Cölfen and highlights recent studies on complex materials—oxides, biominerals, organic–inorganic crystals—which were central to his research activity. It summarizes key milestones,
Charles Sidhoum   +5 more
wiley   +1 more source

Application of a New Silica Gel Ionization Intensifier on Nanogram Lead Isotope Analysis

open access: yesYankuang ceshi, 2014
In nuclear forensics the amount of Pb to be analyzed is usually in the order of several nanograms; that is >10-3 of ionization efficiency is required for mass spectrometry measurements.
LIU Xue-mei   +3 more
doaj   +2 more sources

Nanothermometry in Living Cells: Physical Limits, Conceptual and Material Challenges

open access: yesAdvanced Functional Materials, EarlyView.
Heat and temperature are fundamental to life. When nanothermometers began probing regions as small as a living cell, they triggered controversial claims of large intracellular temperature gradients. We review physical constraints energy‐conservation, entropy production, thermodynamic fluctuations, and molecular dynamics.
Taras Plakhotnik
wiley   +1 more source

Sintesis dan Karakterisasi Silika Gel dari Limbah Abu Sekam Padi(oryza Sativa) dengan Variasi Konsentrasi Pengasaman [PDF]

open access: yes, 2010
The research about synthesis and characterization of gel silica from ash rice husk(Oryza Sativa) with variation of acid concentration aim to know to earn or doesn\u27t silicaof gel synthesis from ash rice husk and know the rate irrigate the best gel ...
Listiyanti, dan DewiWidyaningsih, Ismiati Sholikha, Friyatmoko W. K., Erma Dewi Sri Utami
core  

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