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https://www.readbyqxmd.com/read/28079363/fluorescence-development-of-latent-fingerprint-with-conjugated-polymer-nanoparticles-in-aqueous-colloidal-solution
#1
Hong Chen, Rong-Liang Ma, Yun Chen, Li-Juan Fan
Poly(p-phenylene vinylene) (PPV) nanoparticles in aqueous colloidal solution have been prepared via a modified Wessling method, with the addition of surfactant. The fluorescent colloidal solution was used as the developing solution to develop the fingerprints on different substrates. The developing process was accomplished simply by immersing the substrates into developing solution and then taking out, followed by rinsing with deionized water. The initial study about the fingerprints on the adhesive tapes showed that the developing solution is very effective in fluorescence developing on both fresh and aged visible fingerprints; and such effect was negligibly affected by treating the fingerprints with water or other organic solvents, whether before developing or after...
January 12, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28067487/investigation-into-pseudo-capacitance-behavior-of-glycoside-containing-hydrogels
#2
Nachiket Raravikar, Andrew Dobos, Eshwaran Narayanan, Taraka Sai Pavan Grandhi, Saurabh Mishra, Kaushal Rege, Michael Goryll
Electrochemical pseudocapacitors are an attractive choice for energy storage applications because they offer higher energy densities than electrostatic or electric double layer capacitors. They also offer higher power densities in shorter durations of time, as compared to batteries. Recent efforts on pseudocapacitors include biocompatible hydrogel electrolytes and transition metal electrodes for implantable energy storage applications. Pseudocapacitive behavior in these devices has been attributed to the redox reactions that occur within the electric double layer, which is formed at the electrode-electrolyte interface...
January 19, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28048019/su-f-t-76-total-skin-electron-therapy-an-end-to-end-examination-of-the-absolute-dosimetry-with-a-rando-phantom
#3
G Cui, J Ha, S Zhou, J Cui, A Shiu
PURPOSE: To examine and validate the absolute dose for total skin electron therapy (TSET) through an end-to-end test with a Rando phantom using optically stimulated luminescent dosimeters (OSLDs) and EBT3 radiochromic films. METHODS: A Varian Trilogy linear accelerator equipped with the special procedure 6 MeV HDTSe- was used to perform TSET irradiations using a modified Stanford 6-dual-field technique. The absolute dose was calibrated using a Markus ion chamber at a reference depth of 1...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046781/su-f-t-93-breast-surface-dose-enhancement-using-a-clinical-prone-breast-board
#4
M Guerra, G Jozsef
PURPOSE: The use of specialized patient set-up devices in radiotherapy, such as prone breast boards, may have unwanted dosimetric effects. The goal of this study was to evaluate the effect of a clinically used prone breast board on skin dose due to buildup. METHODS: GafChromic film (EBT3) was used for dose measurements on the surface of a solid water phantom shaped to mimic the curvature of the breast. We investigated two setup scenarios: the medial field border placed at the medial edge of the board and 1 cm contralaterally from that edge...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28012990/assessment-of-skin-barrier-function-and-biochemical-changes-of-ex-vivo-human-skin-in-response-to-physical-and-chemical-barrier-disruption
#5
Nadine Döge, Araks Avetisyan, Sabrina Hadam, Eva Katharina Barbosa Pfannes, Fiorenza Rancan, Ulrike Blume-Peytavi, Annika Vogt
Topical dermatotherapy is intended to be used on diseased skin. Novel drug delivery systems even address differences between intact and diseased skin underlining the need for pre-clinical assessment of different states of barrier disruption. Herein, we studied how short-term incubation in culture media compared to incubation in humidified chambers affects human skin barrier function and viability. On both models we assessed different types and intensities of physical and chemical barrier disruption methods with regard to structural integrity, biophysical parameters and cytokine-levels...
December 21, 2016: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28008987/a-bio-enabled-maximally-mild-layer-by-layer-kapton-surface-modification-approach-for-the-fabrication-of-all-inkjet-printed-flexible-electronic-devices
#6
Yunnan Fang, Jimmy G D Hester, Wenjing Su, Justin H Chow, Suresh K Sitaraman, Manos M Tentzeris
A bio-enabled, environmentally-friendly, and maximally mild layer-by-layer approach has been developed to surface modify inherently hydrophobic Kapton HN substrates to allow for great printability of both water- and organic solvent-based inks thus facilitating the full-inkjet-printing of flexible electronic devices. Different from the traditional Kapton surface modification approaches which are structure-compromising and use harsh conditions to target, and oxidize and/or remove part of, the surface polyimide of Kapton, the present Kapton surface modification approach targeted the surface electric charges borne by its additive particles, and was not only the first to utilize environmentally-friendly clinical biomolecules to build up a thin film of protamine-heparin complex on Kapton, but also the first to be conducted under minimally destructive and maximally mild conditions...
December 23, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27966367/novel-sio2-h2ti2o5%C3%A2-h2o-nanochain-composite-with-high-uv-visible-photocatalytic-activity-for-supertransparent-multifunctional-thin-films
#7
Lin Yao, Junhui He, Tong Li, Tingting Ren
In the current work, a peroxo titanium complex (PTC) solution was used as a novel water-soluble precursor to fabricate H2Ti2O5·H2O and the SiO2/H2Ti2O5·H2O-nanochain composite at low temperature (90-100 °C). The average width of H2Ti2O5·H2O nanochains is 4.5 ± 1.5 nm. Under full-spectrum irradiation, the Si/Ti-nanochain composite showed good UV-visible light absorption and excellent photocatalytic activity, which is 2.8 times that of P25. In the composite, SiO2 not only contributes to the formation of nanochains and improves the catalytic performance of H2Ti2O5·H2O but also reduces the refractive index of the complex...
December 27, 2016: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/27934975/xurography-for-microfluidics-on-a-reactive-solid
#8
Amélie Neuville, Louis Renaud, Thi Thuy Luu, Mona Wetrhus Minde, Espen Jettestuen, Jan Ludvig Vinningland, Aksel Hiorth, Dag Kristian Dysthe
In this paper, we propose a simple method to embed transparent reactive materials in a microfluidic cell, and to observe in situ the dissolution of the material. As an example, we show how to obtain the dissolution rate of a calcite window of optical quality, dissolved in water and hydrochloric acid (HCl). These fluids circulate at controlled flowrates in a channel which is obtained by xurography: double sided tape is cut out with a cutter plotter and placed between the calcite window and a non-reactive support...
December 9, 2016: Lab on a Chip
https://www.readbyqxmd.com/read/27917258/modeling-the-qbo-improvements-resulting-from-higher-model-vertical-resolution
#9
Marvin A Geller, Tiehan Zhou, D Shindell, R Ruedy, I Aleinov, L Nazarenko, N L Tausnev, M Kelley, S Sun, Y Cheng, R D Field, G Faluvegi
Using the NASA Goddard Institute for Space Studies (GISS) climate model, it is shown that with proper choice of the gravity wave momentum flux entering the stratosphere and relatively fine vertical layering of at least 500 m in the upper troposphere-lower stratosphere (UTLS), a realistic stratospheric quasi-biennial oscillation (QBO) is modeled with the proper period, amplitude, and structure down to tropopause levels. It is furthermore shown that the specified gravity wave momentum flux controls the QBO period whereas the width of the gravity wave momentum flux phase speed spectrum controls the QBO amplitude...
September 2016: Journal of Advances in Modeling Earth Systems
https://www.readbyqxmd.com/read/27859284/comparison-of-rehydration-techniques-for-fingerprinting-the-deceased-after-mummification
#10
Chun-Chieh Chen, Chao-Kai Yang, Chun-Yu Chen, Henry C Lee, Sheng-Meng Wang
Postmortem decay causes fingertip decomposition, desiccation, shriveling, and rigidity, reducing the possibility of obtaining sufficiently clear fingerprints for identification. In this study, five rehydration solutions (ammonium hydroxide, sodium carbonate, potassium hydroxide, urea, and warm water) followed by three fingerprint recording methods (photograph, inking roll, and dusting tape) were investigated to process mummified fingertips from an unidentified cadaver. The results show that sodium carbonate treatment is the most effective for minutiae restoration, followed by ammonium hydroxide treatment...
January 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/27846299/hyperglycemia-induces-skin-barrier-dysfunctions-with-impairment-of-epidermal-integrity-in-non-wounded-skin-of-type-1-diabetic-mice
#11
Junko Okano, Hideto Kojima, Miwako Katagi, Takahiko Nakagawa, Yuki Nakae, Tomoya Terashima, Takeshi Kurakane, Mamoru Kubota, Hiroshi Maegawa, Jun Udagawa
Diabetes causes skin complications, including xerosis and foot ulcers. Ulcers complicated by infections exacerbate skin conditions, and in severe cases, limb/toe amputations are required to prevent the development of sepsis. Here, we hypothesize that hyperglycemia induces skin barrier dysfunction with alterations of epidermal integrity. The effects of hyperglycemia on the epidermis were examined in streptozotocin-induced diabetic mice with/without insulin therapy. The results showed that dye leakages were prominent, and transepidermal water loss after tape stripping was exacerbated in diabetic mice...
2016: PloS One
https://www.readbyqxmd.com/read/27842544/experiences-and-perceptions-of-ghanaian-midwives-on-labour-pain-and-religious-beliefs-and-practices-influencing-their-care-of-women-in-labour
#12
Lydia Aziato, Hannah Antwi Ohemeng, Cephas N Omenyo
BACKGROUND: Beliefs surrounding pain during childbirth has biblical foundations that contribute to labour pain being viewed as a natural phenomenon. Contemporary health care promotes evidence-based labour pain management but the faith of the midwife may influence her midwifery practice regarding labour pain management. Therefore this study sought to gain in-depth insight into the experiences and perceptions of midwives regarding labour pain and the religious beliefs and practices influencing their care of women in labour in Ghana...
November 14, 2016: Reproductive Health
https://www.readbyqxmd.com/read/27800639/measurement-of-skin-surface-biomakers-by-transdermal-analyses-patch-following-different-in-vivo-models-of-irritation-a-pilot-study
#13
D Falcone, P Spee, K Salk, M Peppelman, P C M van de Kerkhof, P E J van Erp
BACKGROUND/PURPOSE: FibroTx Transdermal Analyses Patch (TAP) is a novel technology for non-invasive measurements of protein biomarkers on the skin surface, in vivo. The aim of this study was to explore the potential of TAP in detecting skin surface biomarkers following mild perturbations, in vivo, using two experimental models: tape stripping, mimicking acute barrier disruption, and histamine iontophoresis, mimicking acute and local inflammation at minimal skin barrier insult. METHODS: Tape stripping and histamine iontophoresis were performed in two separate experiments on the volar forearm of healthy volunteers (n = 27 and n = 10, respectively)...
November 1, 2016: Skin Research and Technology
https://www.readbyqxmd.com/read/27765220/comparative-proteomic-analysis-of-two-clam-species-chamelea-gallina-and-tapes-philippinarum
#14
COMPARATIVE STUDY
Silvia Vincenzetti, Alberto Felici, Giorgio Ciarrocchi, Stefania Pucciarelli, Massimo Ricciutelli, Ambra Ariani, Valeria Polzonetti, Paolo Polidori
Clams have long been a fisheries and aquaculture sector of great importance in Italy, the main resource of fisheries is the Chamelea gallina of indigenous origin, whereas clams breeding is supported almost entirely by the Tapes philippinarum, a species of Indo-Pacific origin. Bivalve molluscs quality depends mainly on the water quality, and then by a series of factors such as water temperature and salinity, gametogenic cycle, food availability, and environmental conditions, that affect the Condition Index. In this work crude extracts obtained from the edible part of Chamelea gallina and Tapes philippinarum were analyzed by a proteomic approach based on a two-dimensional gel electrophoresis followed by liquid chromatography-tandem mass spectrometry, in order to detect biomarkers useful for identification of the two kinds of clams and to assess their nutritional characteristics...
March 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27725574/generic-selection-criteria-for-safety-and-patient-benefit-vi-comparing-the-physicochemical-and-pharmaceutical-properties-of-brand-name-generic-and-otc-felbinac-tapes
#15
Yuko Wada, Yukie Takaoka, Mitsuru Nozawa, Miho Goto, Ken-Ichi Shimokawa, Fumiyoshi Ishii
We measured the pH, water-vapor permeability, adhesive force, peeling-force, elongation rate, support flexibility, and peeling time of medicinal and over-the-counter (OTC) tape preparations containing felbinac. When measuring the pH of each preparation, Felnabion (pH 4.5) was weakly acidic, and EMEC and Tokuon (pH 7.0) were neutral. When measuring the water-vapor permeability of each preparation, that of a generic product, EMEC (380 g/m(2)/24h), was twice as high as that of a brand-name product, Seltouch (189 g/m(2)/24 h)...
October 4, 2016: Drug Discoveries & Therapeutics
https://www.readbyqxmd.com/read/27689720/a-versatile-route-to-polymer-reinforced-broadband-antireflective-and-superhydrophobic-thin-films-without-high-temperature-treatment
#16
Tingting Ren, Zhi Geng, Junhui He, Xiaojie Zhang, Jin He
Broadband high transmittance, good mechanical robustness as well as simple and low temperature fabrication are three important aspects that dictate the practical applications of superhydrophobic thin films, especially on organic substrates. However, it has proved difficult to meet these challenges. In the present work, superhydrophobic thin films were prepared by first dip-coating solid silica nanoparticles, then spray-coating hollow silica nanoparticles, followed by spray-coating mesoporous silica nanosheets & poly(vinyl alcohol) (PVA), and eventually chemical vapor deposition of 1H,1H,2H,2H-perflurooctyltriethoxysilane (POTS) at 90°C...
January 15, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/27650608/importance-of-water-content-of-the-stratum-corneum-in-mouse-models-for%C3%A2-contact-hypersensitivity
#17
Takaaki Doi, Yoshiko Mizukawa, Yurie Shimoda, Yoshimi Yamazaki, Tetsuo Shiohara
Although a marked rise in the prevalence of allergic diseases over the past few decades may be related to environmental factors in industrialized countries, evidence for the protective effect of humidity on the barrier function of the skin is still awaited. We asked whether an increase in the water content of stratum corneum at the site of hapten application had a strong impact on the magnitude of contact hypersensitivity (CHS). The magnitude of CHS, induced by either lipid-soluble or water-soluble hapten, was inversely correlated with the water content of stratum corneum at the hapten application site in the elicitation phase...
January 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/27632222/ex-vivo-skin-permeation-of-betulin-from-water-in-oil-foams
#18
Anna Färber, Rolf Daniels
Triterpenes of the outer bark of birch are known to improve wound healing. An oleogel with these triterpenes as active principle is approved by the European Medicines Agency. As foams can be applied without touching the skin, they might be an advantageous application form. A comparable wound-healing effect can be expected when the permeation flux of the triterpenes from different types of formulations, namely oleogels, water-in-oil emulsions and water-in-oil foams, is similar. The tested formulations were based on three lipids (medium-chain trigylcerides, sunflower oil and paraffin) which differ in their polarity and solvent power for the triterpenes...
2016: Skin Pharmacology and Physiology
https://www.readbyqxmd.com/read/27584161/narrated-video-of-a-re-do-colposuspension
#19
Linda Cardozo, Dudley Robinson, Fevzi Shakir
AIMS: To present a narrated video designed to demonstrate the steps involved in an open re-do colposuspension. METHODS: This was in a 70-year-old woman who presented with recurrent severe stress urinary incontinence. Urodynamics confirmed severe urodynamic stress incontinence, with no detrusor over activity. Her maximum urethral closure pressure (MUCP) was 8 cm/water. She previously had a total abdominal hysterectomy (TAH), bilateral salpingo-oophorectomy (BSO) and colposuspension in 1998...
September 1, 2016: Neurourology and Urodynamics
https://www.readbyqxmd.com/read/27582028/investigating-the-formation-of-a-repulsive-hydrogel-of-a-cationic-16mer-peptide-at-low-ionic-strength-in-water-by-vibrational-spectroscopy-and-rheology
#20
David DiGuiseppi, Jodi Kraus, Siobhan E Toal, Nicolas Javier Alvarez, Reinhard Schweitzer-Stenner
The cationic peptide (AAKA)4 (AK16) exhibits a high propensity for aggregation into β-sheet like structures in spite of the high positive charge of its protonated lysine side chains. Upon incubation into an aqueous solution the peptide maintains a metastable β-sheet like structure with fibrillar content, the apparent stability of which increases with peptide concentration. In the presence of a sufficiently high concentration of anions, the peptide spontaneously forms a hydrogel at millimolar concentrations...
September 1, 2016: Journal of Physical Chemistry. B
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