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Tobias Johannes Bader, Wolfgang Schulz, Klaus Kümmerer, Rudi Winzenbacher
The behavior of micropollutants in water treatment is an important aspect in terms of water quality. Non-target screening by liquid chromatography coupled to high-resolution mass spectrometry (LC-HRMS) offers the opportunity to comprehensively assess water treatment processes by comparing the signal heights of all detectable compounds before and after treatment. Without preselection of known target compounds, all accessible information is used to describe changes across processes and thus serves as a measure for the treatment efficiency...
November 22, 2017: Analytical Chemistry
Maria Chasapi, Mohamed Maher, Peter Mitchell, Milind Dalal
BACKGROUND: Extralevator abdominoperineal excision (ELAPE) is increasingly used to treat locally advanced low rectal cancer as it has been related to superior oncological outcomes than traditional abdominoperineal excision.However, ELAPE also has been associated with high perineal wound morbidity rates as it creates a larger perineal cavity than standard abdominoperineal excision. This greater defect, along with the effects of preoperative chemoradiation on wound healing, makes uneventful perineal reconstruction post-ELAPE a real challenge for the plastic surgeon...
November 21, 2017: Annals of Plastic Surgery
S Gauvin, C F Pukall
The objective of this paper was to develop a measure of sexual script flexibility when approaching a sexual problem in a relationship. A series of online studies were conducted with individuals in relationships. As one subscale on the two-factor model had poor convergent and discriminant validity, a final single factor scale with 6-items was retained. The single factor scale demonstrated good model fit, high internal reliability, adequate convergent and discriminant validity, and moderate test re-test reliability...
November 22, 2017: Journal of Sex & Marital Therapy
Sri Djuwitaningsih, Setyowati
Alarming incidents of maternal deaths in Indonesia are due to three major causes: bleeding, sepsis, and hypertension, in addition to other non-obstetric causes and unsafe abortions. Adolescent girls contributed to maternal mortality based on early marriage, unwanted pregnancy, and childbirth. Prevention efforts have been taken through government programs and non-governmental organizations, but in practice those were considered ineffective. Thus, a preventative effort in the form of health education should be made, preferably embedded in a popular mobile application that most teenagers would be apt to use...
2017: Compr Child Adolesc Nurs
Marco Bacci, Cassiano Langini, Jiří Vymětal, Amedeo Caflisch, Andreas Vitalis
A detailed understanding of the conformational dynamics of biological molecules is difficult to obtain by experimental techniques due to resolution limitations in both time and space. Computer simulations avoid these in theory but are often too short to sample rare events reliably. Here we show that the progress index-guided sampling (PIGS) protocol can be used to enhance the sampling of rare events in selected parts of biomolecules without perturbing the remainder of the system. The method is very easy to use as it only requires as essential input a set of several features representing the parts of interest sufficiently...
November 21, 2017: Journal of Chemical Physics
Matthew K Bassett, Ryan C Fortenberry
The C3H radical is believed to be prevalent throughout the interstellar medium and may be involved in the formation of polycyclic aromatic hydrocarbons. C3H exists as both a linear and a cyclic isomer. The C2v cyclopropenylidenyl radical isomer was detected in the dark molecular cloud TMC-1, and the linear propenylidenyl radical isomer has been observed in various dark molecular clouds. Even though the c-C3H radical has been classified rotationally, the vibrational frequencies of this seemingly important interstellar molecule have never been directly observed...
June 14, 2017: Journal of Chemical Physics
Li Zhang, Yanbo Li, Changli Li, Qiao Chen, Zhen Zhen, Xin Jiang, Miao Zhong, Fuxiang Zhang, Hongwei Zhu
A highly efficient low-bandgap (1.2-0.8 eV) photoelectrode is critical for accomplishing efficient conversion of visible-near-infrared sunlight into storable hydrogen. Herein, we report Sb2Se3 polycrystalline thin film photocathode having a low-bandgap (1.2-1.1 eV) for efficient hydrogen evolution for wide solar-spectrum utilization. The photocathode was fabricated by a facile thermal evaporation of single Sb2Se3 powder source onto the Mo-coated soda-lime glass substrate, followed by annealing under Se vapor and surface modification with anti-photocorrosive CdS/TiO2 bilayer and Pt catalyst...
November 22, 2017: ACS Nano
Artur Bednarkiewicz, Karolina Trejgis, Joanna Drabik, Agnieszka Kowalczyk, Lukasz Marciniak
Phosphor Assisted Luminescent Thermometry relays on studying, often subtle, temperature dependent spectral properties, such as luminescence spectra, bands shifts or luminescence lifetimes. While this is feasible with high resolution spectrometers or time resolved detectors, technical implementation of such temperature mapping or wide field imaging is complex and cumbersome. Therefore, new approach for non-contact ratiometric temperature detection has been proposed based on comparison of emission properties of bright Cr3+ doped phosphors at single emission band upon two, resonant and non-resonant optical excitation bands...
November 22, 2017: ACS Applied Materials & Interfaces
Wen Li, Fengning Guo, Haifeng Ling, Hui Liu, Mingdong Yi, Peng Zhang, Wenjun Wang, Linghai Xie, Wei Huang
In this paper, the development of organic field-effect transistor (OFET) memory device based on isolated and ordered nanostructures (NSs) arrays of wide-bandgap (WBG) small-molecule organic semiconductor material [2-(9-(4-(octyloxy)phenyl)-9H-fluoren-2-yl)thiophene]3 (WG3 ) is reported. The WG3 NSs are prepared from phase separation by spin-coating blend solutions of WG3 /trimethylolpropane (TMP), and then introduced as charge storage elements for nonvolatile OFET memory devices. Compared to the OFET memory device with smooth WG3 film, the device based on WG3 NSs arrays exhibits significant improvements in memory performance including larger memory window (≈45 V), faster switching speed (≈1 s), stable retention capability (>10(4) s), and reliable switching properties...
November 22, 2017: Small
J Borghi, J Lohmann, E Dale, F Meheus, J Goudge, K Oboirien, A Kuwawenaruwa
A health system's ability to deliver quality health care depends on the availability of motivated health workers, which are insufficient in many low income settings. Increasing policy and researcher attention is directed towards understanding what drives health worker motivation and how different policy interventions affect motivation, as motivation is key to performance and quality of care outcomes. As a result, there is growing interest among researchers in measuring motivation within health worker surveys...
November 20, 2017: Health Policy and Planning
S E Avetisov, N A Chernenkova, Z V Surnina
Diabetic polyneuropathy (DPN) is a serious complication of diabetes that leads to early disability in patients if late diagnosed. There has been a lot of research into pathophysiological mechanisms of nerve fiber damage and risk factors for neurological complications of diabetes. Early diagnosis of the latter is quite a challenge and, thus, the problem of finding more reliable diagnostic modalities is rather pressing. In this review, an interdisciplinary approach to the said problem, high-end diagnostic methods, and clinical features of DPN are described...
2017: Vestnik Oftalmologii
T Yu Verzhanskaya, E P Tarutta
The rational for the study was the high prevalence of myopia in the world. According to the World Health Organization (WHO), myopia is one of the five leading causes of blindness and low vision. Of recent reports on conservative measures for the stabilization of myopia, two areas of investigation deserve attention: methods of optical correction that affect peripheral refraction, orthokeratology lenses (OKL) in particular, and pharmacotherapy. The aim of the study was to evaluate the effectiveness and safety of myopia control in pediatric patients by combining two methods - OKL wearing and instillation of extra low doses of atropine (0...
2017: Vestnik Oftalmologii
Yagmur Yildizhan, Nurdan Erdem, Monsur Islam, Rodrigo Martinez-Duarte, Meltem Elitas
Blood has been the most reliable body fluid commonly used for the diagnosis of diseases. Although there have been promising investigations for the development of novel lab-on-a-chip devices to utilize other body fluids such as urine and sweat samples in diagnosis, their stability remains a problem that limits the reliability and accuracy of readouts. Hence, accurate and quantitative separation and characterization of blood cells are still crucial. The first step in achieving high-resolution characteristics for specific cell subpopulations from the whole blood is the isolation of pure cell populations from a mixture of cell suspensions...
November 22, 2017: Sensors
Kimberly Y Won, Sana Sambou, Amanda Barry, Keri Robinson, Momodou Jaye, Bakary Sanneh, Abdoulie Sanyang, Katherine Gass, Patrick J Lammie, Maria Rebollo
A current need in the global effort to eliminate lymphatic filariasis (LF) is the availability of reliable diagnostic tools that can be used to guide programmatic decisions, especially decisions made in the final stages of the program. This study conducted in The Gambia aimed to assess antifilarial antibody levels among populations living in historically highly LF-endemic areas and to evaluate the use of serologic tools to confirm the interruption of LF transmission. A total of 2,612 dried blood spots (DBSs) collected from individuals aged 1 year and above from 15 villages were tested for antibodies to Wb123 by enzyme-linked immunosorbent assay (ELISA)...
November 20, 2017: American Journal of Tropical Medicine and Hygiene
Lucie Korecka, Karel Vytras, Zuzana Bilkova
Cancer is a widespread disease characterized by high mortality. To improve the survival rate or facilitate effective therapy, accurate and reliable diagnosis at an early stage is needed. For this reason, there is a continuous push to develop sensitive methods which can be used in cancer diagnosis. Current diagnosis relies on the quantification of cancer biomarkers defined as molecules that are measurable in body fluids or tissues and indicate a change in physiological processes with subsequent pathological manifestations...
November 20, 2017: Current Medicinal Chemistry
Jeanette McNeill, Gwen Sherwood
PURPOSE: To address reported disparities in pain management among Hispanic patients, this article reports the psychometrics of the newly developed Spanish language Houston Pain Outcome Instrument (HPOI) with postoperative Hispanic patients. METHODS: Findings from qualitative interviews conducted with 35 self-identified Hispanics in Phase 1 of the overall project were used to generate items for a new Spanish language instrument, Cuestionario de Houston Sobre el Dolor (HPOI)...
January 1, 2017: Hispanic Health Care International: the Official Journal of the National Association of Hispanic Nurses
Zhong-Hui Shen, Jian-Jun Wang, Yuanhua Lin, Ce-Wen Nan, Long-Qing Chen, Yang Shen
Understanding the dielectric breakdown behavior of polymer nanocomposites is crucial to the design of high-energy-density dielectric materials with reliable performances. It is however challenging to predict the breakdown behavior due to the complicated factors involved in this highly nonequilibrium process. In this work, a comprehensive phase-field model is developed to investigate the breakdown behavior of polymer nanocomposites under electrostatic stimuli. It is found that the breakdown strength and path significantly depend on the microstructure of the nanocomposite...
November 22, 2017: Advanced Materials
Heather D Gibbs, Juliana M T B Camargo, Sarah Owens, Byron Gajewski, Ana Paula Cupertino
Nutrition is important for preventing and treating chronic diseases highly prevalent among Latinos, yet no tool exists for measuring nutrition literacy among Spanish speakers. This study aimed to adapt the validated Nutrition Literacy Assessment Instrument for Spanish-speaking Latinos. This study was developed in two phases: adaptation and validity testing. Adaptation included translation, expert item content review, and interviews with Spanish speakers. For validity testing, 51 participants completed the Short Assessment of Health Literacy-Spanish (SAHL-S), the Nutrition Literacy Assessment Instrument in Spanish (NLit-S), and socio-demographic questionnaire...
November 21, 2017: Journal of Immigrant and Minority Health
Fang Yuan, Wenbo Li, Shizhe Lin, Nan Wu, Shuwen Chen, Junwen Zhong, Zisheng Xu, Xin Li, Yongjun Xiao, Liang Huang
High-speed optical communication systems are built for real-time, massive and remote information exchange. However, any power outage will paralyse the systems and cause a huge loss. Here we constructed a self-powered long-distance optical communication system (SLOCS) utilizing output enhanced parallel connected electret nanogenerators (NGs) as a backup power for the power outage. The output current of the electret NG was promoted from 1.45 μA to 8.14 μA through optimizing the thickness of the electret film...
November 22, 2017: Nanoscale
Peter K Kriz, Rebekah Mannix, Alex M Taylor, Danielle Ruggieri, William P Meehan
Background: Previous studies have evaluated high school and collegiate athletes in the pre-Zurich guidelines era; whether adolescent athletes demonstrate similar neurocognitive decrements in the current concussion management era remains unclear. Purpose: To assess for the presence of neurocognitive deficits in adolescents with a sport-related concussion at the time of self-reported symptom resolution. Study Design: Cross-sectional study; Level of evidence, 3...
November 2017: Orthopaedic Journal of Sports Medicine
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