Optimization of acoustic performances of a new tung oleic acid‐based composite polyurethane foam

2019 ◽  
Vol 136 (33) ◽  
pp. 47861 ◽  
Author(s):  
Yangjie Ji ◽  
Shuming Chen
Keyword(s):  
Oleic Acid ◽  
Polyurethane Foam

scholarly journals In situ immobilization of commercial lipase in rigid polyurethane foam and application in the esterification of geraniol and oleic acid

2017 ◽  
Vol 8 (4) ◽  
pp. 57
Author(s):  
Ilizandra Aparecida Fernandes ◽  
Juliana Da Silva Zanatta ◽  
Diane Rigo ◽  
Nádia Ligianara Dewes Nyari ◽  
Jamile Zeni ◽  
...  
Keyword(s):  
Oleic Acid ◽  
Polyurethane Foam ◽  
Rigid Polyurethane Foam ◽  
In Situ Immobilization ◽  
Commercial Lipase

A magnetic super lattice

1987 ◽  
Vol 45 ◽  
pp. 360-361 ◽  
Author(s):  
M.D. Bentzon ◽  
J. v. Wonterghem ◽  
A. Thölén
Keyword(s):  
Thermal Decomposition ◽  
Oleic Acid ◽  
Magnetic Fluid ◽  
Magnetic Particles ◽  
Carbon Film ◽  
Thick Layer ◽  
Amorphous Iron ◽  
Super Lattice ◽  
Carrier Liquid ◽  
Median Diameter

We report on the oxidation of a magnetic fluid. The oxidation results in magnetic super lattice crystals. The “atoms” are hematite (α-Fe2O3) particles with a diameter ø = 6.9 nm and they are covered with a 1-2 nm thick layer of surfactant molecules.Magnetic fluids are homogeneous suspensions of small magnetic particles in a carrier liquid. To prevent agglomeration, the particles are coated with surfactant molecules. The magnetic fluid studied in this work was produced by thermal decomposition of Fe(CO)5 in Declin (carrier liquid) in the presence of oleic acid (surfactant). The magnetic particles consist of an amorphous iron-carbon alloy. For TEM investigation a droplet of the fluid was added to benzine and a carbon film on a copper net was immersed. When exposed to air the sample starts burning. The oxidation and electron irradiation transform the magnetic particles into hematite (α-Fe2O3) particles with a median diameter ø = 6.9 nm.

Intestinal Absorption of Iodine131-Labeled Triolein and Oleic Acid in Normal Subjects and in Steatorrhea

1958 ◽  
Vol 34 (5) ◽  
pp. 901-909 ◽  
Author(s):  
Ervin Kaplan ◽  
Bernard D. Edidin ◽  
Robert C. Fruin ◽  
Lyle A. Baker
Keyword(s):  
Oleic Acid ◽  
Intestinal Absorption ◽  
Normal Subjects

Actual procedures of diagnostics and treatments of crural venous ulcer in specialized German praxis and clinics

Phlebologie ◽  
2009 ◽  
Vol 38 (02) ◽  
pp. 77-82 ◽  
Author(s):  
P. Altmeyer ◽  
M. Stücker ◽  
S. Reich-Schupke
Keyword(s):  
Annual Meeting ◽  
Polyurethane Foam ◽  
Surgical Therapy ◽  
Compression Therapy ◽  
German Society ◽  
Venous Ulcer ◽  
Ulcus Cruris ◽  
Wound Dressings

Summary Background: To evaluate the implementation of the guidelines of the German Society of Phlebology for venous crural ulcer a survey was conducted during the annual meeting of the German Society of Phlebology 2008 in Bochum. Methods: All 719 medical participants got an anonymized questionnaire asking for supply of crural ulcer in their institution. Results: The recurrent 66 questionnaires (9.2%) were filled by colleagues from practice or hospital, mostly surgeons, dermatologists, phlebologists and vascular surgeons. As basic diagnostics vein doppler (56.1%), duplex (75.8%) or measurement of brachial-ankleindex (83.3%) were performed. Compression therapy is used in all institutions. Mainly used wound dressings are polyurethane foam dressings, alginates, hydrocolloids and silver dressings. About 2/3 conduct surgical therapy of ulcers. Conclusion: Supply of ulcus cruris by the participants of the annual meeting of the DGP corresponds mainly, but not in all aspects to the guidelines. Further efforts for a spread of the guidelines are necessary.

Interfacial interactions of polyurethane foam systems with inorganic fillers

2016 ◽  
Vol 2 (2) ◽  
pp. 49-53
Author(s):  
M. A. Ksenofontov ◽  
L. E. Ostrovskaya ◽  
E. Yu. Bobkova ◽  
V. S. Vasil`eva ◽  
T. G. Pavlukevich
Keyword(s):  
Polyurethane Foam ◽  
Interfacial Interactions ◽  
Inorganic Fillers

Oleic acid

2015 ◽  
Author(s):  
LB Becnel ◽  
YF Darlington ◽  
S Orechsner ◽  
J Easton-Marks ◽  
CA Watkins ◽  
...  
Keyword(s):  
Oleic Acid

Reusability Study of Sulfated Zirconia Functionalized SBA-15 Catalyst for Biolubricant Oil Production from Oleic Acid

2019 ◽  
Vol 1 (1) ◽  
pp. 46
Author(s):  
F R Rangganita ◽  
L Hermida ◽  
A Angraeni ◽  
D Khoirunnisa
Keyword(s):  
Oleic Acid ◽  
Sulfated Zirconia ◽  
Room Temperature ◽  
Oil Production ◽  
Catalyst Reusability

Sulfated zirconia functionalized SBA-15 catalsyt (SZr-SBA-15) was prepared byreacting SBA-15 with Zirkoniumoxychloride and urea at 90oC to form ZrO2-SBA-15. Then, ZrO2-SBA-15 was reacted with H2SO4 at room temperature to produceSZr-SBA-15 catalsyt.. The catalyst was characterized in terms of adsorptiondesorption nitrogen analysis, SEM-EDX and FTIR. Based on SEM-EDX andadsorption-desorption nitrogen analysis results, it was found that Zr had beenincorporated in SBA-15. By using the SZr-SBA-15 catalyst, esterification reactionof oleic acid with TMP to produce biolubricant oil of Trimethylolpropanetrioleatachieved 85% oleic acid conversion and selectivity of 63,7%. Reusability study ofSZr-SBA-15 catalyst was carried out for 3 rounds of reaction. It was found that thecatalyst could be used up to 3 rounds without significant decrease in activityKeywords: biolubricant oil, catalyst reusability, sba-15, sulfated zirconia.

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