نتایج جستجو برای: bio based surfactant

تعداد نتایج: 2995077  

2014
Xiaodong Zhu Birm-June Kim Qingwen Wang Qinglin Wu

Many bio-based materials, which have lower environmental impact than traditional synthetic materials, show good sound absorbing and sound insulation performances. This review highlights progress in sound transmission properties of bio-based materials and provides a comprehensive account of various multiporous bio-based materials and multilayered structures used in sound absorption and insulatio...

2010
C. Carnero Ruiz J. M. Hierrezuelo J. M. Peula-García J. Aguiar

The binding of the nonionic surfactant n-octyl-D-thioglucopyranoside (OTG) to the globular protein bovine serum albumin (BSA) has been investigated by using experimental techniques such as surface tension, steady-state fluorescence and dynamic light scattering. It was observed that the surfactant micellization is delayed in the presence of protein; this was interpreted as a consequence of the f...

2017
Hsin-Ju Lin Ching-Tzu Huang Hsiu-Feng Hsiao Ming-Chou Chiang Mei-Jy Jeng

OBJECTIVE There are conflicting data regarding the use of end-tidal carbon dioxide (PetCO2) measurement in preterm infants. The aim of this study was to evaluate the effects of different dead space to tidal volume ratios (VD/VT) on the correlation between PetCO2 and arterial carbon dioxide pressure (PaCO2) in ventilated preterm infants with respiratory distress syndrome (RDS). METHODS We enro...

Colloidal Gas Aphrons (CGA), consist of gas bubbles with diameters ranging from 10 to 100 micron, surrounded by a thin aqueous surfactant film. This fluid combines certain surfactants and polymers to create the systems of microbubbles. The function of surfactant in CGAs is to produce the surface tension to contain the aphrons. Also, a biopolymer needs to be considered in the formulation as ...

ژورنال: طلوع بهداشت یزد 2014
شعبانی, محبوبه, طالبی, امیر رضا, گلی, امین ,

Introduction:Among the pollutants in waste gases, volatile organic carbons (VOCs) are very harmful for human, animals and plants. Formaldehyde is a member of VOCs family and is very toxic, mutagen and carcinogen. For removing formaldehyde, Some biological methods for treating waste gases such as bio-trickling filter reactor (BTFR) have been developed by scientists. The aim of this study was to ...

پایان نامه :وزارت بهداشت، درمان و آموزش پزشکی - دانشگاه علوم پزشکی و خدمات بهداشتی درمانی مشهد - دانشکده دندانپزشکی 1391

مقدمه وهدف : میزان موفقیت مواد بکار رفته در جراحی های بالا بردن کف سینوس ماگزیلا و همچنین ثبات ایمپلنت های قرار گرفته در این نواحی همواره مطرح است لذا این مطالعه با هدف مقایسه ارتفاع استخوان و میزان ثبات ایمپلنت های کاشته شده به طور همزمان با جراحی بالا بردن کف سینوس ماگزیلا با استفاده از مواد bio-oss و nanobone با استفاده از آنالیز فرکانس انعکاسی و تصاویر cbct بود. مواد و روشها : در ابتدا بیم...

2014
Hugh P. Shanahan Anne M. Owen Andrew P. Harrison

We discuss the applicability of the Microsoft cloud computing platform, Azure, for bioinformatics. We focus on the usability of the resource rather than its performance. We provide an example of how R can be used on Azure to analyse a large amount of microarray expression data deposited at the public database ArrayExpress. We provide a walk through to demonstrate explicitly how Azure can be use...

Journal: :Respiratory Research 2005
Heinz Fehrenbach Sebastian Tews Antonia Fehrenbach Matthias Ochs Thorsten Wittwer Thorsten Wahlers Joachim Richter

BACKGROUND Declining levels of surfactant protein A (SP-A) after lung transplantation are suggested to indicate progression of ischemia/reperfusion (IR) injury. We hypothesized that the previously described preservation-dependent improvement of alveolar surfactant integrity after IR was associated with alterations in intraalveolar SP-A levels. METHODS Using immuno electron microscopy and desi...

Journal: :Petroleum Science 2022

Surfactant-based oil recovery processes are employed to lower the interfacial tension in immiscible displacement processes, change wettability of rock a more water-wet system and emulsify displace it subsurface porous media. Furthermore, these phenomena can reduce capillary pressure enhance spontaneous imbibition. The key factors affecting such process temperature, salinity pH fluids, surfactan...

2008
Xiangdong Fang Qinghong Wang Patrick Shuler William Goddard

Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commerci...

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