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https://www.readbyqxmd.com/read/28936785/ligand-capped-cdte-quantum-dots-as-a-fluorescent-nanosensor-for-detection-of-copper-ions-in-environmental-water-sample
#1
Hamideh Elmizadeh, Majid Soleimani, Farnoush Faridbod, Ghasem Rezanejade Bardajee
In this work, as a novel fluorescent nano-sensor, a ligand-capped CdTe QDs (CdTe-L QDs) was designed for the detection and quantification of Cu(2+) ions in environmental water samples. The synthesized QDs were characterized by transmission electron microscopy (TEM), thermo-gravimetric (TG) analysis, Fourier transform infrared (FTIR), UV-Vis spectrophotometry and fluorescence spectroscopy. Optical properties of the produced nanosensor were monitored by UV-Vis and fluorescence spectrophotometry. It was observed that fluorescence intensity of the produced nano-sensor selectively quenched by adding Cu(2+) ions in comparison to other metal ions tested...
September 21, 2017: Journal of Fluorescence
https://www.readbyqxmd.com/read/28936421/a-conceptual-framework-to-assess-effectiveness-in-wheelchair-provision
#2
Deepan C Kamaraj, Nathan Bray, Karen Rispin, Padmaja Kankipati, Jonathan Pearlman, Johan Borg
BACKGROUND: Currently, inadequate wheelchair provision has forced many people with disabilities to be trapped in a cycle of poverty and deprivation, limiting their ability to access education, work and social facilities. This issue is in part because of the lack of collaboration among various stakeholders who need to work together to design, manufacture and deliver such assistive mobility devices. This in turn has led to inadequate evidence about intervention effectiveness, disability prevalence and subsequent costeffectiveness that would help facilitate appropriate provision and support for people with disabilities...
2017: Afr J Disabil
https://www.readbyqxmd.com/read/28936132/architectural-style-and-green-spaces-predict-older-adults-evaluations-of-residential-facilities
#3
Veronica Cerina, Ferdinando Fornara, Sara Manca
The purpose of this study was to analyse the effects of residential facilities' design features on older adults' psychosocial responses. Participants (N = 192) were over 65-year-old residents who were randomly exposed to different experimental scenarios concerning a hypothetical residential facility for older adults, using a 3 × 2 between-subjects design (i.e. home-like vs. hotel-like vs. usual-standard architectural style; presence vs. absence of green spaces). After the experimental session, participants were asked to fill in a questionnaire that measured their attitudes towards short- and long-term relocation, anticipated residential satisfaction with the facility, and feelings of broken home attachment...
September 2017: European Journal of Ageing
https://www.readbyqxmd.com/read/28936111/agile-development-of-a-smartphone-app-for-perinatal-monitoring-in-a-resource-constrained-setting
#4
Boris Martinez, Rachel Hall-Clifford, Enma Coyote, Lisa Stroux, Camilo E Valderrama, Christopher Aaron, Aaron Francis, Cate Hendren, Peter Rohloff, Gari D Clifford
Technology provides the potential to empower frontline healthcare workers with low levels of training and literacy, particularly in low- and middle-income countries. An obvious platform for achieving this aim is the smartphone, a low cost, almost ubiquitous device with good supply chain infrastructure and a general cultural acceptance for its use. In particular, the smartphone offers the opportunity to provide augmented or procedural information through active audiovisual aids to illiterate or untrained users, as described in this article...
2017: Journal of Health Informatics in Developing Countries
https://www.readbyqxmd.com/read/28935129/environmental-design-for-end-of-life-care-an-integrative-review-on-improving-quality-of-life-and-managing-symptoms-for-patients-in-institutional-settings
#5
REVIEW
Rana Sagha Zadeh, Paul Eshelman, Judith Setla, Laura Kennedy, Emily Hon, Aleksa Basara
CONTEXT: The environment in which end-of-life care is delivered can support or detract from the physical, psychological, social, and spiritual needs of patients, their families, and their caretakers. OBJECTIVES: This review aims to organize and analyze the existing evidence related to environmental design factors that improve the quality of life and total well-being of people involved in end-of-life care and to clarify directions for future research. METHOD: This integrated literature review synthesized and summarized research evidence from the fields of medicine, environmental psychology, nursing, palliative care, architecture, interior design, and evidence-based design...
September 18, 2017: Journal of Pain and Symptom Management
https://www.readbyqxmd.com/read/28934662/a-pc-pu-nanoparticle-pu-decellularized-scaffold-composite-vascular-patch-synergistically-optimized-overall-performance-promotes-endothelialization
#6
Jun Zhang, Cheng Liu, Fuling Feng, Dawei Wang, Shuaishuai Lu, Guo Wei, Hong Mo, Tong Qiao
Composite vascular patches have gained increasingly attention due to the limited availability of autologous patches (vascular graft materials made from the blood vessels of the same recipient), the lack of growth capability of nonautologous patches (vascular graft materials made from the blood vessels of a different donor) and the disadvantages of synthetic patches. In this study, we report a highly biocompatible phosphatidylcholine-polyurethane nanoparticle/polyurethane/decellularized scaffold composite vascular patch (PCVP)...
September 6, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28934548/controlling-styrene-maleic-acid-lipid-particles-through-raft
#7
Anton A A Smith, Henriette Elisabeth Autzen, Tomas Laursen, Vincent Wu, Max Yen, Aaron Hall, Scott D Hansen, Yifan Cheng, Ting Xu
The ability of styrene maleic acid copolymers to dissolve lipid membranes into nanosized lipid particles is a facile method of obtaining membrane proteins in solubilized lipid discs while conserving part of its native lipid environment. While the currently used copolymers can readily extract membrane proteins in native nanodiscs, their highly disperse composition is likely to influence the dispersity of the discs as well as the extraction efficiency. In this study, reversible addition fragmentation chain transfer was used to control the polymer architecture and dispersity of molecular weights with a high-precision...
September 21, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28933813/facile-and-effective-coloration-of-dye-inert-carbon-fiber-fabrics-with-tunable-colours-and-excellent-laundering-durability
#8
Fengxiang Chen, Huiyu Yang, Ke Li, Bo Deng, Qingsong Li, Xin Liu, Binghai Dong, Xingfang Xiao, Dong Wang, Yong Qin, Shi-Min Wang, Ke-Qin Zhang, Weilin Xu
Carbon fiber is a good candidate in various applications, including military, structural, sports equipment, energy storage, and infrastructure. Coloring of carbon fiber has been a big challenge for decades due to their high degrees of crystallization and insufficient chemical affinity to dyes. Here, multicolored carbon fiber fabrics (CFFs) are fabricated using a feasible, effective atomic layer deposition (ALD) technique. The vibrant and uniform structural colors originate from thin film interference is simply regulated by controlling the thickness of comformal TiO2 coatings on the surface of black carbon fibers (CFs)...
September 21, 2017: ACS Nano
https://www.readbyqxmd.com/read/28932654/oxygen-free-layer-by-layer-assembly-of-lithiated-composites-on-graphene-for-advanced-hydrogen-storage
#9
Guanglin Xia, Yingbin Tan, Xiaowei Chen, Fang Fang, Dalin Sun, Xingguo Li, Zaiping Guo, Xuebin Yu
A facile hydrogenation-induced self-assembly strategy to synthesize lithium hydride (LiH) nanosheets with a thickness of 2 nm that are uniformly distributed on graphene is reported and designed. Taking advantage of LiH nanosheets with high reactivity and a homogeneous distribution on graphene support as a nanoreactor, the confined chemical synthesis of oxygen-free lithiated composites is effectively and efficiently realized.
September 2017: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
https://www.readbyqxmd.com/read/28932266/risk-factors-for-surgical-site-infections-in-obstetrics-a-retrospective-study-in-an-ethiopian-referral-hospital
#10
Teshager Mamo, Tilaye Workneh Abebe, Tesfaye Yitna Chichiabellu, Antehun Alemayehu Anjulo
BACKGROUND: Pregnant women are at risk of infection during labor and delivery. Infection in obstetrics accounts for the second most common cause of maternal mortality next to post partum hemorrhage. Knowing the prevalence and associated risk factors would help to undertake optimal precautions and standard surgical techniques to reduce surgical site infection which poses increased hospital cost and total hospital stay of the patients. METHOD: Facility based retrospective observational study design was carried out purposively to assess the prevalence of surgical site infections and associated risk factors among mothers who had delivery related surgery at obstetric ward of Assela teaching referral hospital from April, 23, 2015 to September 5, 2015...
2017: Patient Safety in Surgery
https://www.readbyqxmd.com/read/28931845/controllable-electrochromic-polyamide-film-and-device-produced-by-facile-ultrasonic-spray-coating
#11
Huan-Shen Liu, Wei-Chieh Chang, Chin-Yen Chou, Bo-Cheng Pan, Yi-Shan Chou, Guey-Sheng Liou, Cheng-Liang Liu
Thermally stable TPA-OMe polyamide films with high transmittance modulation in response to applied potential are formed by facile ultrasonic spray-coating. Four processing conditions (Film A, Film B, Film C and Film D) through tuning both solution concentrations and deposition temperatures can be utilized for the formation of wet and dry deposited films with two film thickness intervals. The electrochromic results show that the dry deposited rough films at higher deposition temperature generally reveal a faster electrochromic response, lower charge requirements (Q) and less conspicuous color changes (smaller optical density change (ΔOD) and lightness change (ΔL*)) during the oxidation process as compared to the wet deposited smooth films at lower deposition temperature...
September 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28930480/health-facility-staff-training-for-improving-breastfeeding-outcome-a-systematic-review-for-step-2-of-the-baby-friendly-hospital-initiative
#12
Olukunmi O Balogun, Amarjargal Dagvadorj, Jennifer Yourkavitch, Katharina da Silva Lopes, Maiko Suto, Yo Takemoto, Rintaro Mori, Pura Rayco-Solon, Erika Ota
The Baby-Friendly Hospital Initiative (BFHI) implemented through the "Ten Steps to Successful Breastfeeding" has been widely promoted as an intervention that improves breastfeeding rates. Step 2 requires the training of all healthcare staff in skills that are necessary to implement the policy. This systematic review provides evidence about the effect of training healthcare staff in hospitals and birth centers on breastfeeding outcomes. Randomized controlled trials (RCT), quasi-RCT, and controlled before and after (CBA) studies comparing training of healthcare staff on breastfeeding and supportive feeding practices with no training were included in this review...
September 20, 2017: Breastfeeding Medicine: the Official Journal of the Academy of Breastfeeding Medicine
https://www.readbyqxmd.com/read/28930435/new-triplet-sensitization-routes-for-photon-upconversion-thermally-activated-delayed-fluorescence-molecules-inorganic-nanocrystals-and-singlet-to-triplet-absorption
#13
Nobuhiro Yanai, Nobuo Kimizuka
Photon upconversion based on triplet-triplet annihilation (TTA-UC) has attracted much interest because of its possible applications to renewable energy production and biological fields. In particular, the UC of near-infrared (NIR) light to visible (vis) light is imperative to overcome the Shockley-Queisser limit of single-junction photovoltaic cells, and the efficiency of photocatalytic hydrogen production from water can also be improved with the aid of vis-to-ultraviolet (UV) UC. However, both processes have met limitations in the wavelength range, efficiency, and sensitivity for weak incident light...
September 20, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28926912/waste-treatment-and-energy-production-from-small-scale-wastewater-digesters
#14
Stephanie Lansing, Ayella Maile-Moskowitz, Alexander Eaton
Three tubular anaerobic digestion (AD) systems were installed in Haiti to treat black water (toilet-based wastewater), including a three cell 36m(3) clinic digester (CD), a two cell 2m(3) hotel digester (HD), and a three-cell 3m(3) farm digester (FD) for worker use. During digestion, total coliforms were reduced by 99.1%, E. coli by 98.5%, and chemical oxygen demand (COD) by 93.6%. Nutrients in the effluent averaged 99.4mg/L NH4(+) and 10.6mg/L PO4(2-), producing an effective organic fertilizer. Average biogas production in CD was 108L/d, with 65...
September 4, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28926229/in-situ-derived-nixfe1-xooh-nife-nixfe1-xooh-nanotube-arrays-from-nife-alloys-as-efficient-electrocatalysts-for-oxygen-evolution
#15
An-Liang Wang, Yu-Tao Dong, Mei Li, Chaolun Liang, Gao-Ren Li
Herein, NixFe1-xOOH/NiFe/NixFe1-xOOH sandwich-structured nanotube arrays (SNTAs) supported on carbon fiber cloth (CFC) (NixFe1-xOOH/NiFe/NixFe1-xOOH SNTAs-CFC) have been developed as flexible high-performance OER catalysts by a facile in-situ electrochemical oxidation of NiFe metallic alloy nanotube arrays (ANTAs) during oxygen evolution process. Benefiting from the advantages of high conductivity, hollow nanotube array and porous strucuture, NixFe1-xOOH/NiFe/NixFe1-xOOH SNTAs-CFC exhibited a low overpotential of ~220 mV at the current density of 10 mA cm-2 and a small Tafel slope of 52 mV dec-1 in alkaline solution, which both are smaller than those of most OER electrocatalysts...
September 19, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28926228/facile-synthesis-of-unique-cellulose-triacetate-based-flexible-and-high-performance-gel-polymer-electrolyte-for-lithium-ion-batteries
#16
Trupti Nirmale, Indrapal Karbhal, Ramchandra S Kalubarme, Manjusha V Shelke, Anjani J Varma, Bharat Bhanudas Kale
Lithium ion batteries (LIBs) with polymer based electrolytes have attracted huge attention due to the possibility of fabricating intrinsically safer and flexible devices. However, economical and eco-friendly sustainable technology is an oncoming challenge to fulfill the ever increasing demand. To circumvent this issue, we have developed gel polymer electrolyte (GPE) based on renewable polymers like cellulose triacetate (CTA) and poly (polyethylene glycol methacrylate) p(PEGMA) by using a photo polymerization technique...
September 19, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28926052/pseudo-electron-deficient-organometallics-limited-reactivity-towards-electron-donating-ligands
#17
Anaïs Pitto-Barry, Alexandru Lupan, Markus Zegke, Thomas Swift, Amr A A Attia, Rianne M Lord, Nicolas P E Barry
Half-sandwich metal complexes are of considerable interest in medicinal, material, and nanomaterial chemistry. The design of libraries of such complexes with particular reactivity and properties is therefore a major quest. Here, we report the unique and peculiar reactivity of eight apparently 16-electron half-sandwich metal (ruthenium, osmium, rhodium, and iridium) complexes based on benzene-1,2-dithiolato and 3,6-dichlorobenzene-1,2-dithiolato chelating ligands. These electron-deficient complexes do not react with electron-donor pyridine derivatives, even with the strong σ-donor 4-dimethylaminopyridine (DMAP) ligand...
September 19, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28925248/joint-commission-now-offering-comprehensive-cardiac-center-certification
#18
Carlos A Pellegrini
Comprehensive Cardiac Center Certification is designed for hospitals with robust cardiac care facilities, with the aim of helping institutions to establish the structures, processes, and culture necessary to achieve sustained levels of effective clinical performance and patient outcomes across cardiac specialties and the continuum of care.
February 2017: Bulletin of the American College of Surgeons
https://www.readbyqxmd.com/read/28924225/residual-ammonium-persulfate-in-nanoparticles-has-cytotoxic-effects-on-cells-through-epithelial-mesenchymal-transition
#19
Chen Song, Leyu Wang, Genlan Ye, Xiaoping Song, Yutong He, Xiaozhong Qiu
Ammonium persulfate (APS), a low molecular weight chemical compound with strong oxidizing properties, should to be totally removed during preparation of nanomaterials due to its cytotoxicity. APS exerts its oxidative stress effects mainly on cell membrane, but its intracellular influence remains unclear. Here, we designed a facile negatively-charged carboxylic gelatin-methyacrylate (carbox-GelMA) nanoparticle (NP) as a cargo-carrier through the catalytic and oxidizing action of APS in W/O system. The formed APS-loaded carbox-GelMA NPs (APS/NPs) were transported into the lysosome in MCF-7 breast cancer cells...
September 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28923968/soft-tubular-microfluidics-for-2d-and-3d-applications
#20
Wang Xi, Fang Kong, Joo Chuan Yeo, Longteng Yu, Surabhi Sonam, Ming Dao, Xiaobo Gong, Chwee Teck Lim
Microfluidics has been the key component for many applications, including biomedical devices, chemical processors, microactuators, and even wearable devices. This technology relies on soft lithography fabrication which requires cleanroom facilities. Although popular, this method is expensive and labor-intensive. Furthermore, current conventional microfluidic chips precludes reconfiguration, making reiterations in design very time-consuming and costly. To address these intrinsic drawbacks of microfabrication, we present an alternative solution for the rapid prototyping of microfluidic elements such as microtubes, valves, and pumps...
September 18, 2017: Proceedings of the National Academy of Sciences of the United States of America
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