نتایج جستجو برای: surface properties

تعداد نتایج: 1428668  

2013
Joachim Schulz Ekkard Brinksmeier Daniel Meyer

Metalworking fluids (MWF) play a significant role in manufacturing processes, such as machining or forming. Consequently, a high number of MWF with varying chemical composition are commercially available. However, the working mechanisms of the MWF are still object of discussion in science and application. This paper addresses the possible interactions of additives with metal surfaces taking the...

2010
Marjan Korošec Jože Duhovnik Janez Kopač

This paper concerns with free form surface reorganization and assessment of free formmodel complexity, grouping particular surface geometrical properties within patch boundaries, using self organized Kohonen neural network (SOKN). Neural network proved itself as an adequate tool for considering all topological non-linearities appearing in free form surfaces. Coordinate values of point cloud dis...

2015
Wenxian Li Xiangyuan Cui Rong Zeng Guodong Du Ziqi Sun Rongkun Zheng Simon P. Ringer Shi Xue Dou

Modulation of material physical and chemical properties through selective surface engineering is currently one of the most active research fields, aimed at optimizing functional performance for applications. The activity of exposed crystal planes determines the catalytic, sensory, photocatalytic, and electrochemical behavior of a material. In the research on nanomagnets, it opens up new perspec...

Journal: :Faraday discussions 2008
N J Mason E A Drage S M Webb A Dawes R McPheat G Hayes

Microsized particles play an important role in many diverse areas of science and technology, for example, surface reactions of micron-sized particles play a key role in astrochemistry, plasma reactors and atmospheric chemistry. To date much of our knowledge of such surface chemistry is derived from 'traditional' surface science-based research. However, the large surface area and morphology of s...

Journal: :Bioresource technology 2010
Qingyi Xu Zengshe Liu Mitsutoshi Nakajima Sosaku Ichikawa Nobutaka Nakamura Poritosh Roy Hiroshi Okadome Takeo Shiina

This paper characterizes the physico-chemical properties of the soybean oil-based polymeric surfactant, Palozengs R-004 (hereafter referred to as R-004). The surface activity of R-004 is comparable to the reported activities of biosurfactants produced by microorganisms and higher than some of the conventional synthetic surfactants. The surface tension of Milli-Q water was reduced to a minimum v...

2017
Andrea Haase

Nanotechnology is one of the key technologies of the 21st century. Already by now, many products containing manufactured nanomaterials (NMs) have entered the market. Most industrial applications are based on just a few NM types, mostly metals and metal oxides. However, by varying size, shape or surface chemistry a large number of variants can be produced. Variations of physico-chemical paramete...

Journal: :ACS nano 2009
Andy Wijaya Stefan B Schaffer Ivan G Pallares Kimberly Hamad-Schifferli

Combination therapy, or the use of multiple drugs, has been proven to be effective for complex diseases, but the differences in chemical properties and pharmacokinetics can be challenging in terms of the loading, delivering, and releasing multiple drugs. Here we demonstrate that we can load and selectively release two different DNA oligonucleotides from two different gold nanorods. DNA was load...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2010
j. li

ozone modification method and air-oxidation were used for the surface treatment of polyacrylonitrile(pan)-based carbon fiber. the surface characteristics of carbon fibers were characterized by x-ray photoelectron spectroscopy (xps). the interfacial properties of carbon fiber reinforced polyamide 6 (cf/pa6) composites were investigated by means of the single fiber pull-out tests. as a result, it...

2015
K. RAJA P. MARIMUTHU

Stainless steel (SS) is used for many commercial and industrial applications owing to its high resistance to corrosion. It is too hard to machine due to its high strength and high work hardening property. A surface property such as surface roughness (SR) is critical to the function-ability of machined components. SS is generally regarded as more difficult to machine material and poor SR is obta...

Journal: :journal of food and bioprocess engineering 0
sara abbasi rad transfer phenomena laboratory (tpl), department of food science, technology and engineering, faculty of biosystems engineering, university of tehran gholamreza askari transfer phenomena laboratory (tpl), department of food science, technology and engineering, faculty of biosystems engineering, university of tehran

the effect of dry material, glycerol and ratio of water to seed in alyssum homalocarpum films on their thickness, transparency, moisture content, tensile strength, elongation and water vapor permeability was investigated using mixture response surface methods. dry material and glycerol were important factors influencing tensile strength, elongation and water vapor permeability. ratio of water t...

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