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Isopropyl alcohol

Jovanna Martínez, Juan H Macías, Virginia Arreguín, Jose A Álvarez, Alejandro E Macías, Juan L Mosqueda-Gómez
BACKGROUND: False-positive blood cultures can lead to unnecessary risks and misuse of antibiotics; to reduce rates of false-positives, it would be useful to determine whether use of an antiseptic with a prolonged effect is required. METHODS: Clinical study of efficacy (blinded and randomized) to compare the rate of blood culture contamination when skin antisepsis was performed with 70% isopropyl alcohol or 2% chlorhexidine gluconate in 70% isopropyl alcohol in 2 hospitals...
January 12, 2017: American Journal of Infection Control
Sagar Sopanrao Muley, Tanaji Nandgude, Sushilkumar Poddar
BACKGROUND: In the present study, Lansoprazole pellets were prepared employing a novel excipient Carboxymethyl tamarind kernel powder (CMTKP) using extrusion-spheronization technique. Pellet formulation was optimized for formulation parameters (concentration of microcrystalline cellulose, CMTKP, croscarmellose sodium and isopropyl alcohol). METHODS: Process parameters (speed and duration of spheronization) were optimized using factorial design. The pellets were evaluated for yield, bulk and tapped density, particle size, hardness, drug content, disintegration time and drug release...
January 13, 2017: Recent Patents on Drug Delivery & Formulation
Naira Carniel, Giovani L Zabot, Marshall Paliga, Marcelo L Mignoni, Marcio A Mazzuti, Wagner L Priamo, J V Oliveira, Marco Di Luccio, Marcus V Tres
The separation of Jatropha curcas oil from azeotropes of ethyl alcohol/n-hexane and isopropyl alcohol/n-hexane using ceramic membranes with different cut-offs (5, 10 and 20 kDa) is presented. The mass ratios of oil:azeotropes (O:S) studied were 1:3 for feeding pressures of 0.1, 0.2 and 0.3 MPa, and 1:1 for feeding pressure of 0.1 MPa. Isopropyl alcohol was the best solvent for the membranes conditioning to permeate n-hexane (240 kg/m2.h). In the separation of Jatropha curcas oil and azeotropes of solvents, both membranes showed oil retention and total flux decreases with time...
January 15, 2017: Environmental Technology
Giancarlo A Garcia, Christine V Nguyen, Marc A Yonkers, Jeremiah P Tao
PURPOSE: Baby shampoo is used as an alternative surgical skin preparation, but the evidence supporting its use is scarce with no descriptions of efficacy in the periocular region. The authors compare the efficacy of baby shampoo, povidone-iodine (PI, Betadine) and isopropyl alcohol (IA) in reducing eyelid skin bacterial load. METHODS: Prospective, randomized, comparative, and interventional trial. Bacterial load on adult, human eyelid skin was quantitated before and after cleansing with 1) dilute baby shampoo, 2) 10% PI, or 3) 70% IA...
January 6, 2017: Ophthalmic Plastic and Reconstructive Surgery
Xiaotu Liu, Gang Yu, Zhiguo Cao, Bin Wang, Jun Huang, Shubo Deng, Yujue Wang
This study surveyed occurrences and influencing factors of organophosphorus flame retardants (PFRs) on skin surface. Skin wipe samples from palms, back-of-hands and forearms of 30 adults were collected by using gauze pads soaked in isopropyl alcohol in Beijing, China. Tris(chloropropyl) phosphate isomers (∑TCPP), tris(2-chloroethyl) phosphate (TCEP) and triphenyl phosphate (TPHP) were the most abundant compounds with detection frequencies higher than 97%. ∑TCPP showed the highest mean level (4.6μg/m(2)), followed by TPHP (2...
October 28, 2016: Environment International
Chang Ho Yu, Bhupendra Patel, Marilou Palencia, Zhihua Tina Fan
A selective, sensitive, and accurate analytical method for the measurement of perfluoroalkyl and polyfluoroalkyl substances (PFASs) in human serum, utilizing LC-MS/MS (liquid chromatography-tandem mass spectrometry), was developed and validated according to the Centers for Disease Control and Prevention (CDC) guidelines for biological sample analysis. Tests were conducted to determine the optimal analytical column, mobile phase composition and pH, gradient program, and cleaning procedure. The final analytical column selected for analysis was an extra densely bonded silica-packed reverse-phase column (Agilent XDB-C8, 3...
January 13, 2017: Journal of Chromatography. A
Jacob Johny, Selene Sepulveda-Guzman, Bindu Krishnan, David A Avellaneda, Josue A Aguilar Martinez, Sadasivan Shaji
Tin sulfide (SnS) nanoparticles were synthesized by pulsed laser ablation in liquid (PLAL) technique using an Nd:YAG laser operated at 532 nm. SnS thin films were deposited by spraying the colloidal suspension onto the heated substrates. The influence of different liquid media (dimethyl formamide and isopropyl alcohol) on the thin film properties were studied. Morphology, crystalline structure, and chemical composition of the nanoparticles were identified using transmission electron microscopy with energy dispersive X-ray analysis...
December 15, 2016: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
B Casini, C Selvi, M L Cristina, M Totaro, A L Costa, P Valentini, S Barnini, A Baggiani, E Tagliaferri, G Privitera
BACKGROUND: Enhanced environmental cleaning practices are among the most accepted measures for controlling the spread of carbapenem-resistant Acinetobacter baumannii (CR-Ab). AIM: To evaluate the impact of heightened cleaning on an ongoing CR-Ab outbreak in a burn intensive care unit (BICU) of an Italian teaching hospital, where chlorhexidine-60% isopropyl alcohol was applied as a complementary disinfectant on high-touch surfaces. METHODS: Compliance with the microbial limit proposed for the BICU by AFNOR-NF-S90-351 (20 colony-forming units/100cm(2)) was assessed by plate count, and compared with the results obtained with intracellular adenosine triphosphate (ATP) detection...
January 2017: Journal of Hospital Infection
Songita A Choudhury, Feng Xie, Paul A Dayton, Thomas R Porter
BACKGROUND: Commercially available microbubbles such as Definity contain octafluoropropane encapsulated in a lipid shell. This perfluorocarbon can be compressed into liquid nanodroplets at room temperatures and activated with transthoracic diagnostic ultrasound. The aim of this study was to determine the size range and acoustic characteristics of Definity nanodroplets (DNDs) compared with Definity microbubbles (DMBs). METHODS: An in vitro flow system was used with a diagnostic ultrasound transducer (S5-1, iE33)...
December 6, 2016: Journal of the American Society of Echocardiography
Choon Chiat Oh, Hazel H Oon, See Ket Ng, Shang Ian Tee, Anjali Jhingan, Wei-Sheng Chong
The term terra firma-forme dermatosis arises from the Latin phrase terra firma, meaning dry land (dirt), thus implying dirt-like dermatosis. The authors highlight five cases of patients with terra firma-forme dermatosis presenting to our dermatology center between 2012 and 2013. All patients presented to the dermatologist for persistent reticulated brown patches on the skin. These patients ranged in age from 6 to 22 years. All patients had tried various cleansing soaps and agents but were unable to remove the patches...
2016: Skinmed
Chen Han Shiau, Kuan Lun Pan, Sheng Jen Yu, Shaw Yi Yan, Moo Been Chang
No abstract text is available yet for this article.
November 10, 2016: Environmental Technology
Greyce Kelly Steinhorst Alcantara, Leandro Augusto Calixto, Luiz Alberto Beraldo de Moraes, Regina Helena Costa Queiroz, Anderson Rodrigo Moraes de Oliveira, Cristiane Masetto de Gaitani
Levetiracetam (LEV) is an antiepileptic drug that is clinically effective in generalized and partial epilepsy syndromes. The use of this drug has been increasing in clinical practice and intra- or -interindividual variability has been exhibited for special population. For this reason, bioanalytical methods are required for drug monitoring in biological matrices. So this work presents a dispersive liquid-liquid microextraction method followed by gas chromatography-mass spectrometry (DLLME-GC-MS) for LEV quantification in human plasma...
2016: Journal of Analytical Methods in Chemistry
Siti Noorhaniah Yusoh, Khatijah Aisha Yaacob
The optimization of etchant parameters in wet etching plays an important role in the fabrication of semiconductor devices. Wet etching of tetramethylammonium hydroxide (TMAH)/isopropyl alcohol (IPA) on silicon nanowires fabricated by AFM lithography is studied herein. TMAH (25 wt %) with different IPA concentrations (0, 10, 20, and 30 vol %) and etching time durations (30, 40, and 50 s) were investigated. The relationships between etching depth and width, and etching rate and surface roughness of silicon nanowires were characterized in detail using atomic force microscopy (AFM)...
2016: Beilstein Journal of Nanotechnology
Yuanying Fang, Zunhua Yang, Shankariah Gundeti, Jongkook Lee, Haeil Park
A series of GPR119 agonists based on a 5-nitropyrimidine scaffold bearing endo-azabicyclic substituents were synthesized and evaluated for their GPR119 agonistic activities. Most compounds exhibited much stronger EC50 values than that of oleoylethanolamide (OEA). Among them, derivatives from endo-azabicyclic alcohols displayed more potent GPR119 agonistic activities than compounds with endo-azabicyclic amines. Especially the optimized compounds (6, 7, 8, 12, 17) were shown to have potent biological activities and were identified as full agonists...
January 1, 2017: Bioorganic & Medicinal Chemistry
Ki-Woong Kim, Yong Lim Won, Dong Jin Park, Young Sun Kim, Eun Sil Jin, Sung Kwang Lee
We determined the toxicity of mixtures of ethyl acetate (EA), isopropyl alcohol (IPA), methyl ethyl ketone (MEK), toluene (TOL) and xylene (XYL) with half-maximal effective concentration (EC50) values obtained using human hepatocytes cells. According to these data, quantitative property-activity relationships (QPAR) models were successfully proposed to predict the toxicity of mixtures by multiple linear regressions (MLR). The leave-one-out cross validation method was used to find the best subsets of descriptors in the learning methods...
October 2016: Toxicological Research
Xiaotu Liu, Gang Yu, Zhiguo Cao, Bin Wang, Jun Huang, Shubo Deng, Yujue Wang, Hongbo Shen, Xue Peng
The Publisher regrets that this article is an accidental duplication of an article that has already been published, The duplicate article has therefore been withdrawn. The full Elsevier Policy on Article Withdrawal can be found at
November 3, 2016: Chemosphere
Udita Uday Ghosh, Monojit Chakraborty, Soham De, Suman Chakraborty, Sunando DasGupta
Exercising control over the evaporation of colloidal suspensions is pivotal to modulate the coating characteristics for specific uses, wherein the interactions among the liquid, the particles, and the substrate control the process. In the present study, the contact line dynamics of a receding colloidal liquid film consisting of particles of distinctly different sizes (nominal diameters 0.055 and 1 μm and surface unmodified) during evaporation is analyzed. The role of the liquid polarity is also investigated by replacing the polar liquid (water) with a relatively nonpolar liquid (isopropyl alcohol) in the colloidal suspension...
December 6, 2016: Langmuir: the ACS Journal of Surfaces and Colloids
Hyun-Hee Lim, Ho-Sang Shin
As the popularity of body art including tattoo ink has increased, the safety associated with it has become an important interest. In this study, twenty volatile organic compounds (VOCs) and two aldehydes in tattoo inks were identified and quantified. Headspace and gas chromatography-mass spectrometry (HS GC-MS) for the VOCs and HS GC-MS based on derivatization with 2,2,2-trifluoroethylhydrazine (TFEH) for aldehydes was developed. Benzene, chloroform, toluene, ethylbenzene, m-xylene, p-xylene, o-xylene, propylbenzene, chlorobenzene, tert-butylbenzene, 1,3,5-trimethylbenzene, styrene, 1,2,4-trimethylbenzene, 2-chlorotoluene, 4-chlorotoluene, 1,3-dichlorobenzene, 1,4-dichlorobenzene, 1,2-dichlorobenzene, 1,2,4-trichlorobenzene and isopropyl alcohol were detected with the concentration range of 0...
October 31, 2016: Journal of Chromatographic Science
Johnny P Mai, Matthieu Dumont, Christopher Rossi, Kevin Cleary, Joshua Wiedermann, Brian K Reilly
OBJECTIVES/HYPOTHESIS: A prototype tympanostomy tube, composed of polybutyl/methyl methacrylate-co-dimethyl amino ethyl methacrylate (PBM), was tested to 1) evaluate the effect of PBM tubes on rat dermis as a corollary for biocompatibility and (2) to observe the efficacy of dissolution with isopropyl alcohol (iPrOH) and ethanol (EtOH). STUDY DESIGN: Original animal experiment and bench testing. METHODS: A two-part study was conducted to assess biocompatible substance with inducible dissolvability as a critical characteristic for a newly engineered tympanostomy tube...
October 31, 2016: Laryngoscope
Xiaotu Liu, Gang Yu, Zhiguo Cao, Bin Wang, Jun Huang, Shubo Deng, Yujue Wang, Hongbo Shen, Xue Peng
This study was undertaken to determine levels of halogenated flame retardants (HFRs) on skin surface to provide preliminary exposure estimates from dermal absorption. Skin wipes of palms, back-of-hands, and forearms were collected from 30 participants by using gauze pads soaked in isopropyl alcohol. Eight polybrominated diphenyl ethers (PBDEs), two novel brominated FRs, and two Dechlorane Plus (DPs) isomers were determined. BDE209, Decabromodiphenylethane (DBDPE), and 1, 2-Bis (2, 4, 6-tribromophenoxy) ethane (BTBPE) were most frequently detected...
February 2017: Chemosphere
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