Results 11 to 20 of about 31,895 (247)

Policosanol extraction from beeswax and improvement of the purity

open access: yesMATEC Web of Conferences, 2017
Policosanol is a mixture of high molecular weight aliphatic long chain alcohols (20-36 carbon atoms). It has been use in pharmaceutical composition and food supplements.
Srisaipet Anakhaorn   +2 more
doaj   +1 more source

树状六角系统的增强型萨格勒布指数(The augmented Zagreb index of the catacondensed hexagonal systems)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2016
The augmented Zagreb index (AZI) of a graph G= (V,E) was recently introduced by FURTULA et al, which is defined as ,where du denotes the degree of a vertex u in G.
LIUJianping(刘剑萍)   +2 more
doaj   +1 more source

Study on VOCs in atmosphere and their sources of a typical industrial park in Shanghai

open access: yes上海师范大学学报. 自然科学版, 2017
Volatile organic compounds(VOCs) data collected in the atmosphere of a typical industrial park in Shanghai in year 2009~2015 were analyzed in this paper.It was found that concentration of TVOC was high in winter and low in spring and summer.48 kinds of ...
Zheng Jun
doaj   +1 more source

A Critical Review on Mathematical Functions Employed for Heptane Plus Characterization in Gas Condensate Reservoirs: Lessons Learned and Future Development

open access: yesJournal of Earth Energy Engineering, 2018
Characterizing heptanes plus fraction in PVT analysis has been a complex problem since its first inception. In this publication, the author is reviewing available mathematical functions employed for this task, whilst pointing out advantages and ...
Steven Chandra
doaj   +1 more source

Production and Kinetics of Isoamyl Acetate from Acetic Anhydride using Candida Antarctica Lipase B in a Solvent-Free System

open access: yesChemical Engineering Transactions, 2013
Isoamyl acetate is the most essential esters in food industry. Studies on isoamyl acetate production were expanded since 1976 through having 1174 patents that contains isoamyl acetate on that year.
N. Yusoff Azudin   +2 more
doaj   +1 more source

THE REACTIONS OF (+)-2- AND (+)-3-CARENES WITH THE RETENTION OF THE BICYCLIC FRAMEWORK [PDF]

open access: yesChemistry Journal of Moldova: General, Industrial and Ecological Chemistry, 2010
Carane-type compounds have attracted attention in recent years due to their practical importance. This review is focused on describing the developments in the synthesis of trimethylbicyclo[4.1.0]heptanes and their unsaturated analogues from ...
L. Bets, L. Vlad, F. Macaev
doaj  

Langmuir Adsorption on Fractal Surfaces

open access: yesAdsorption Science & Technology, 2015
We developed two new methods for analyzing the fractal characteristics of adsorbents. In the first method, the fractal dimension of the adsorbent is determined based on the Hurst index (H) calculated for the random process of development of the Langmuir ...
Volodymyr V. Kutarov   +3 more
doaj   +1 more source

Partition Coefficients of Chlorobenzenes in Heptane–Water and Heptane–Acetonitrile Systems [PDF]

open access: yesBulletin of the Chemical Society of Japan, 1982
Abstract Partition coefficients (KD) of benzene and 11 chloro derivatives of benzene were determined at 25 °C in two liquid-liquid partition systems: heptane/water and heptane/acetonitrile. Increase of KD with increase of the numbers of Cl atoms in the solute is discussed in terms of surface and cohesive energies. The small difference in
Nobuo Suzuki   +2 more
openaire   +1 more source

XXVI.—On the critical temperature of heptane [PDF]

open access: yesJ. Chem. Soc., Trans., 1884
n ...
Thorpe, T. E., R�cker, A. W.
openaire   +1 more source

Intraocular Microsurgical Forceps (20, 23, and 25 gauge) Membrane Peeling Forces Assessment

open access: yesJournal of Ophthalmology, 2013
Background. To assess the peeling forces exerted by different calibers of microsurgical forceps on an experimental model of epiretinal membrane. Methods.
Raul Velez-Montoya   +5 more
doaj   +1 more source

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