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https://www.readbyqxmd.com/read/28930353/interplay-between-bulk-self-assembly-interfacial-and-foaming-properties-in-a-catanionic-surfactant-mixture-of-varying-composition
#1
José Ferreira, Alesya Mikhailovskaya, Alexis Chenneviere, Frédéric Restagno, Fabrice Cousin, François Muller, Jéril Degrouard, Anniina Salonen, Eduardo F Marques
The self-aggregation, surface properties and foamability of the catanionic surfactant mixture cetyltrimethylammonium bromide (CTAB)/sodium octyl sulfonate (SOSo) have been investigated to obtain insight on the relation between bulk nanostructures, surfactant packing, and foam stability and aging. Light microscopy, SANS, cryo-TEM, DLS, surface tension, rheometry and direct photography were used to characterize mixtures with varying CTAB molar fraction, xCTAB. In the bulk, self-assembly is richer in the excess CTAB region than in the excess SOSo one...
September 20, 2017: Soft Matter
https://www.readbyqxmd.com/read/28928523/influence-of-ph-and-salt-concentration-on-functional-properties-of-walnut-protein-from-different-extraction-methods
#2
Haifang Hu, Tao Fan, Xiaoyan Zhao, Xiaowei Zhang, Yali Sun, Hongkai Liu
The effect of pH and NaCl on solubility and functional properties of walnut proteins obtained through AOT reverse micelles, enzyme-assisted reverse micelles and aqueous phase extraction methods was investigated and compared. Extraction yield, foaming properties, water holding capacities of protein obtained through enzyme-assisted reverse micelles at pH 2-12 and NaCl concentration 0.1-1 M were significantly higher than those of the AOT reverse micelles and aqueous phase extracted two. The solubility of proteins by AOT reverse micelles and enzyme-assisted reverse micelles at certain pH and NaCl concentration had no significant difference, but was higher that of the aqueous buffer...
August 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28927931/polyurethane-foam-scaffold-as-in-vitro-model-for-breast-cancer-bone-metastasis
#3
Valentina Angeloni, Nicola Contessi, Cinzia De Marco, Serena Bertoldi, Maria Cristina Tanzi, Maria Grazia Daidone, Silvia Farè
Breast cancer (BC) represents the most incident cancer case in women (29%), with high mortality rate. Bone metastasis occurs in 20-50% cases and, despite advances in BC research, the interactions between tumor cells and the metastatic microenvironment are still poorly understood. In vitro 3D models gained great interest in cancer research, thanks to the reproducibility, the 3D spatial cues and associated low costs, compared to in vivo and 2D in vitro models. In this study, we investigated the suitability of a poly-ether-urethane (PU) foam as 3D in vitro model to study the interactions between BC tumor-initiating cells and the bone microenvironment...
September 16, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28927554/catheter-foam-sclerotherapy-of-the-great-saphenous-vein-with-perisaphenous-tumescence-infiltration-and-saphenous-irrigation
#4
Attilio Cavezzi, Giovanni Mosti, Fausto Campana, Lorenzo Tessari, Luca Bastiani, Simone U Urso
OBJECTIVES: This was a prospective observational study to assess the short- to mid-term efficacy and safety of catheter foam sclerotherapy (CFS) of the great saphenous vein (GSV), including peri-saphenous tumescence infiltration (PST) and intra-saphenous saline irrigation (ISI), in combination with phlebectomy of the varicose tributaries. METHODS: Eighty-eight limbs in 82 patients (19 male, 63 female, mean age 55.7 years) affected by varices related to GSV incompetence were submitted to CFS of the refluxing GSV segment after PST and ISI, combined with phlebectomy of the varicose tributaries...
September 15, 2017: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28926407/dysfunctional-hdl-from-hiv-individuals-promotes-monocyte-derived-foam-cell-formation-in-vitro
#5
Thomas A Angelovich, Anna C Hearps, Michael N Oda, Mark S Borja, Diana Huynh, Stefanie Homann, Anthony Jaworowski, Theodoros Kelesidis
OBJECTIVE: The role of HDL function in HIV-related atherosclerotic cardiovascular disease (CVD) is unclear. HDLs isolated from HIV+ [HIV(+)HDL] and HIV-uninfected individuals (HDL) were assessed for HDL function and ability to promote monocyte-derived foam cell formation (MDFCF) (a key event in HIV-related CVD) ex vivo. DESIGN/METHODS: Using an established in vitro model of atherogenesis and plasma samples from an established cross-sectional study of virologically-suppressed HIV+ males on stable effective antiretroviral therapy (ART) and with low CVD risk (median age: 42 years; n = 10), we explored the impact of native HDL [HIV(+)HDL] on MDFCF...
September 18, 2017: AIDS
https://www.readbyqxmd.com/read/28926220/facile-construction-of-novel-3-dimensional-graphene-amorphous-porous-carbon-hybrids-with-enhanced-lithium-storage-properties
#6
Daming Zhu, Huaqiu Liu, Lixuan Tai, Xiaonan Zhang, Sheng Jiang, Shumin Yang, Lin Yi, Wen Wen, Xiaolong Li
Nowadays, porous materials become essential to many technological applications. In this account, 3-dimensional skeleton composite materials consisted of a core-shell amorphous porous carbon/multi-layer graphene are synthesized by chemical vapor deposition on Ni foam using a facile one-step growth method. The data suggest that these composites have not only outstanding electrical and mechanical properties of the multi-layer graphene but also the mesoporous characteristics of the amorphous carbon. Moreover, the composited carbon materials perfectly inherit the macroporous structure of Ni foam, and the amorphous carbon core in the skeleton serves as a cushion to buffer the volume variation after the removal of Ni...
September 19, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28925379/oriented-cuco2s4-nanograss-arrays-ni-foam-as-an-electrode-for-a-high-performance-all-solid-state-supercapacitor
#7
Yuqiao Wang, Dawei Yang, Tianyue Zhou, Jie Pan, Tao Wei, Yueming Sun
An oriented nanograss array consisting of CuCo2S4 nanocrystallines was directly prepared on Ni foam by a hydrothermal method. The uniform arrays with the single blade diameter of ~100 nm and length of ~4 μm can grow tightly on Ni foam without any binders. The ordered one-dimensional structure facilitates the electron transport to Ni substrates along the axial direction. The electrochemical properties were presented in three- and two-electrode configurations, demonstrating an enhanced specific capacitance and a long-term cycling stability...
September 19, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28924086/ultrasound-assisted-synthesis-of-hydroxylated-soybean-lecithin-from-crude-soybean-lecithin-as-an-emulsifier
#8
Pranali P Chiplunkar, Amit P Pratap
Soybean lecithin is a by-product obtained during degumming step of crude soybean oil refining. Crude soybean lecithin (CSL) contains major amount of phospholipids (PLs) along with minor amount of acylglycerols, bioactive components, etc. Due to presence of PLs, CSL can be used as an emulsifier. Crude soybean lecithin (CSL) was utilized to synthesize hydroxylated soybean lecithin (HSL) by hydroxylation using hydrogen peroxide and catalytic amount of lactic acid to enhance the hydrophilicity and emulsifying properties of CSL...
September 15, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28921506/neurologic-injury-and-patient-displacement-in-gynecologic-laparoscopic-surgery-using-a-beanbag-and-shoulder-supports
#9
Alejandro D Treszezamsky, Suzanne Fenske, Erin L Moshier, Charles J Ascher-Walsh
OBJECTIVE: To quantify the incidence of peripheral neuropathy in gynecologic laparoscopic surgery using a combination of beanbag, eggcrate foam, and shoulder supports; and to assess patient displacement during surgery in a steep Trendelenburg position and determine variables correlated with displacement. METHODS: A retrospective study included all gynecologic laparoscopic surgeries performed by one high-volume surgeon at a US center between September 15, 2007, and September 15, 2012...
September 16, 2017: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/28921432/demonstration-scale-high-cell-density-fermentation-of-pichia-pastoris
#10
Wan-Cang Liu, Ping Zhu
Pichia pastoris has been one of the most successful heterologous overexpression systems in generating proteins for large-scale production through high-cell-density fermentation. However, optimizing conditions of the large-scale high-cell-density fermentation for biochemistry and industrialization is usually a laborious and time-consuming process. Furthermore, it is often difficult to produce authentic proteins in large quantities, which is a major obstacle for functional and structural features analysis and industrial application...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28920984/tailoring-the-morphology-followed-by-the-electrochemical-performance-of-nimn-ldh-nanosheet-arrays-through-controlled-co-doping-for-high-energy-and-power-asymmetric-supercapacitors
#11
Saurabh Singh, Nanasaheb M Shinde, Qi Xun Xia, Chandu V V M Gopi, Je Moon Yun, Rajaram S Mane, Kwang Ho Kim
Herein, we tailor the surface morphology of nickel-manganese-layered double hydroxide (NiMn-LDH) nanostructures on 3D nickel-foam via a step-wise cobalt (Co)-doping hydrothermal chemical process. At the 10% optimum level of Co-doping, we noticed a thriving tuned morphological pattern of NiMn-LDH nanostructures (NiCoMn-LDH (10%)) in terms of the porosity of the nanosheet (NS) arrays which not only improves the rate capability as well as cycling stability, but also demonstrates nearly two-fold specific capacitance enhancement compared to Co-free and other NiCoMn-LDH electrodes with a half-cell configuration in 3 M KOH, suggesting that Co-doping is indispensable for improving the electrochemical performance of NiMn-LDH electrodes...
September 18, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28920803/assessment-of-a-lancet-and-swab-blood-sampling-technique-for-surveillance-of-elephant-endotheliotropic-herpesvirus-infection
#12
Javier Lopez, L do Vet M Sc, Jonathan Haycock, Andrew Mckenzie, Katharina Seilern-Moy, Akbar Dastjerdi
Lancing a finger elicits minimal pain in humans and is applied routinely to obtain small volumes of blood for clinical diagnostics. A modified lancet bleeding method and several blood sampling matrices were evaluated in this study for the purpose of routine elephant endotheliotropic herpesvirus (EEHV) surveillance in Asian elephants (Elephas maximus). The procedure enabled weekly sampling from elephants as young as 9 mo of age. The blood sampling matrices were evaluated for their sensitivity measuring β-actin, tumor necrosis factor α, and/or EEHV-1 by quantitative polymerase chain reaction assays...
September 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28920714/expansible-thermal-gelling-foam-aerosol-for-vaginal-drug-delivery
#13
Liling Mei, Jintian Chen, Siqin Yu, Ying Huang, Yecheng Xie, Hui Wang, Xin Pan, Chuanbin Wu
Vaginal delivery of antimicrobial drugs is the most effective method for the local treatment of the vaginal infections. However, current vaginal drug delivery systems (VDDS), including gel, lotion, aerosol and cream, are suffering from low penetration in the deep vaginal rugae and easy elimination by self-cleaning of vaginal canal. To address these issues, a foam aerosol based on the thermal transformation was designed to improve penetration efficiency and achieve the extended retention. The expansible thermal gelling foam aerosol (ETGFA) consisting of thermal sensitive matrix, silver nanoparticle, adhesive agent and propellant, was optimized by evaluations of precursor viscosity, foam expansion, thermal gelation, gel adhesiveness, antimicrobial effects and tissue irritation...
November 2017: Drug Delivery
https://www.readbyqxmd.com/read/28919878/postural-control-in-bilateral-vestibular-failure-its-relation-to-visual-proprioceptive-vestibular-and-cognitive-input
#14
Andreas Sprenger, Jann F Wojak, Nico M Jandl, Christoph Helmchen
Patients with bilateral vestibular failure (BVF) suffer from postural and gait unsteadiness with an increased risk of falls. The aim of this study was to elucidate the differential role of otolith, semicircular canal (SSC), visual, proprioceptive, and cognitive influences on the postural stability of BVF patients. Center-of-pressure displacements were recorded by posturography under six conditions: target visibility; tonic head positions in the pitch plane; horizontal head shaking; sensory deprivation; dual task; and tandem stance...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28919502/comparison-of-the-memory-foam-pad-versus-the-bean-bag-with-shoulder-braces-in-preventing-patient-displacement-during-gynecologic-laparoscopic-surgery
#15
Sara Farag, Leigh Rosen, Charles Ascher-Walsh
STUDY OBJECTIVE: The primary aim was to compare the amount of patient displacement when a memory foam pad is used versus a bean bag with shoulder braces. The secondary aim was to evaluate for post-operative extremity symptoms including pain, numbness, and weakness. DESIGN: Prospective randomized pilot study. DESIGN: Classification: Canadian Task Force Class I SETTING: Single academic institution PATIENTS: Women ≥ 18 years of age undergoing laparoscopic or robotic gynecologic surgery INTERVENTIONS: Patients were randomized to be positioned on the memory foam pad (Group A) or the bean bag with shoulder braces (Group B) pre-operatively...
September 15, 2017: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/28919372/biological-applications-of-kinetics-of-wetting-and-spreading
#16
REVIEW
G Ahmed, O Arjmandi Tash, J Cook, A Trybala, V Starov
Wetting and spreading kinetics of biological fluids has gained a substantial interest recently. The importance of these fluids in our lives has driven the pace of publications. Globally scientists have ever growing interest in understanding wetting phenomena due to its vast applications in biological fluids. It is impractical to review extremely large number of publications in the field of kinetics of complex biological fluids and cosmetic solutions on diverse surfaces. Therefore, biological and cosmetic applications of wetting and spreading dynamics are considered in the following areas: (i) Spreading of Newtonian liquids in the case of non-porous and porous substrates...
August 18, 2017: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/28918636/soluble-protein-and-amino-acid-content-affects-the-foam-quality-of-sparkling-wine
#17
Bruna C Condé, Eloise Bouchard, Julie A Culbert, Kerry L Wilkinson, Sigfredo Fuentes, Kate S Howell
Proteins and amino acids are known to influence the foam characteristics of sparkling wines. However, it is unclear to what extent they promote foam formation and/or stability. This study aimed to investigate the effect of protein content and amino acid composition, measured via the bicinchoninic acid assay and high-performance liquid chromatography respectively, on the foaming properties of 28 sparkling white wines, made by different production methods. Foam volume and stability were determined using a robotic pourer and computer vision algorithms...
September 17, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28918553/characteristic-of-microplastics-in-the-atmospheric-fallout-from-dongguan-city-china-preliminary-research-and-first-evidence
#18
Liqi Cai, Jundong Wang, Jinping Peng, Zhi Tan, Zhiwei Zhan, Xiangling Tan, Qiuqiang Chen
Microplastic pollution has exhibited a global distribution, including seas, lakes, rivers, and terrestrial environment in recent years. However, little attention was paid on the atmospheric environment, though the fact that plastic debris can escape as wind-blown debris was previously reported. Thus, characteristics of microplastics in the atmospheric fallout from Dongguan city were preliminarily studied. Microplastics of three different polymers, i.e., PE, PP, and PS, were identified. Diverse shapes of microplastics including fiber, foam, fragment, and film were found, and fiber was the dominant shape of the microplastics...
September 16, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28918377/stable-janus-superhydrophilic-hydrophobic-nickel-foam-for-directional-water-transport
#19
Yifan Si, Liwei Chen, Fuchao Yang, Fei Guo, Zhiguang Guo
Janus superhydrophilic/hydrophobic macroporous nickel foam for directional water transport has been demonstrated via a simple floating strategy. Water can transport from hydrophobic to superhydrophilic layer through Janus nickel foam, but cannot transfer from superhydrophilic to hydrophobic layer. This "3D water diode" Janus nickel foam shows extremely high transport rate and outstanding stability. After damaged by abrasion, its directional water transport property retains well.
September 8, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28917894/structural-functional-and-ph-sensitive-release-characteristics-of-water-soluble-polysaccharide-from-the-seeds-of-albizia-lebbeck-l
#20
Chekuri Ashok Kumar Varma, K Jayaram Kumar
Plant polysaccharides, generally regarded as safe (GRAS), are gaining importance as excipients in drug delivery. Therefore, the current paper presents the studies on structural, functional and drug release study of water soluble polysaccharide (ALPS) from seeds of Albizia lebbeck L. High swelling, water holding capacity, foam stability and lower moisture content suggests its use as additive in food preparations. The apparent molecular weight of polysaccharide was found to be 1.98×10(2)kDa. Monosaccharide composition analysis indicated that ALPS consists of mannose (4...
November 1, 2017: Carbohydrate Polymers
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