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https://www.readbyqxmd.com/read/28337916/ag-incorporated-organic-inorganic-perovskite-films-and-planar-heterojunction-solar-cells
#1
Qi Chen, Lei Chen, Fengye Ye, Ting Zhao, Feng Tang, Adharsh Rajagopal, Zheng Jiang, Shenlong Jiang, Alex K-Y Jen, Yi Xie, Jinhua Cai, Liwei Chen
Controlled doping for adjustable material polarity and charge carrier concentration is the basis of semiconductor materials and devices, and it is much more difficult to achieve in ionic semiconductors (e.g. ZnO and GaN) than in covalent semiconductors (e.g. Si and Ge), due to the high intrinsic defect density in ionic semiconductors. The organic-inorganic perovskite material, which is frenetically being researched for applications in solar cells and beyond, is also an ionic semiconductor. Here we present the Ag-incorporated organic-inorganic perovskite films and planar heterojunction solar cells...
March 24, 2017: Nano Letters
https://www.readbyqxmd.com/read/28337906/fates-of-chemical-elements-in-biomass-during-its-pyrolysis
#2
Wu-Jun Liu, Wen-Wei Li, Hong Jiang, Han-Qing Yu
Biomass is increasingly perceived as a renewable resource rather than as an organic solid waste today, as it can be converted to various chemicals, biofuels, and solid biochar using modern processes. In the past few years, pyrolysis has attracted growing interest as a promising versatile platform to convert biomass into valuable resources. However, an efficient and selective conversion process is still difficult to be realized due to the complex nature of biomass, which usually makes the products complicated...
March 24, 2017: Chemical Reviews
https://www.readbyqxmd.com/read/28332669/multiple-imaging-and-excellent-anticancer-efficiency-of-an-upconverting-nanocarrier-mediated-by-single-near-infrared-light
#3
Yan Wang, Guixin Yang, Yanli Wang, Yanping Zhao, Haizhi Jiang, Yuyan Han, Piaoping Yang
It is difficult to meet the requirements of clinical diagnosis through a single imaging technique. Similarly, satisfactory therapy efficacy is also hard to achieve by a single therapeutic modality. It is therefore highly desirable and interesting to simultaneously achieve multimodal imaging and therapies in one single structure. In this study, we developed a core-shell-satellite NaGdF4:Yb,Er,Mn,Co@mSiO2-CuS structure using up-conversion luminescent (UCL) NaGdF4:Yb,Er,Mn,Co as the core, mesoporous silica as the layer, and the photoactive CuS nanoparticles as the satellites...
March 23, 2017: Nanoscale
https://www.readbyqxmd.com/read/28328040/purification-of-baso4-precipitate-contaminated-with-organic-matter-for-oxygen-isotope-measurements-%C3%AE-18-o-and-%C3%AE-17-o
#4
Luhua Xie, Baruch Spiro, Gangjian Wei
RATIONALE: Sulfate precipitates are often contaminated with nitrates and organic materials (OM), which reduce the precision and accuracy of measurements of δ(18) O and Δ(17) O values in the sulfate. Although nitrates can be effectively removed using diethylenetriaminepentaacetic acid solution, removing OM from the precipitates is often difficult. One effective approach is to heat powdered precipitates to high temperatures. In this study, the effect of this procedure on the δ(18) O and Δ(17) O values of BaSO4 precipitate was fully examined...
July 30, 2016: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/28321982/susceptibility-of-insecticide-resistant-bed-bugs-cimex-lectularius-to-infection-by-fungal-biopesticide
#5
Alexis M Barbarin, Giovani S Bellicanta, Jason A Osborne, Coby Schal, Nina E Jenkins
BACKGROUND: Bed bugs are a public health concern, and their incidence is increasing worldwide. Bed bug infestations are notoriously difficult to eradicate, further exacerbated by widespread resistance to pyrethroid and neonicotinoid insecticides. This study evaluated the efficacy of the newly developed fungal biopesticide, Aprehend™, containing Beauveria bassiana, against insecticide-resistant bed bugs. RESULTS: Overall mortality for the Harold Harlan (insecticide-susceptible) strain was high (98-100%) following exposure to Aprehend™ or Suspend SC (deltamethrin)...
March 20, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28320486/left-jackknife-position-a-novel-position-for-laparoscopic-hepatectomy
#6
Jian-Cong Chen, Rong-Xin Zhang, Min-Shan Chen, Li Xu, Jin-Bin Chen, Ke-Li Yang, Yao-Jun Zhang, Zhong-Guo Zhou
BACKGROUND: Laparoscopic hepatectomy for hepatocellular carcinoma (HCC) located in segment VI, VII, or VIII of the liver is usually difficult because of poor operative exposure, due to the unique anatomical structure. In this study, we evaluated the practice of laparoscopic hepatectomy with the left jackknife position for patients with HCC located in segment VI, VII, or VIII. METHODS: A total of 10 patients were enrolled to undergo laparoscopic hepatectomy with the left jackknife position...
March 20, 2017: Chinese Journal of Cancer
https://www.readbyqxmd.com/read/28317883/optical-determination-of-shockley-read-hall-and-interface-recombination-currents-in-hybrid-perovskites
#7
Valerio Sarritzu, Nicola Sestu, Daniela Marongiu, Xueqing Chang, Sofia Masi, Aurora Rizzo, Silvia Colella, Francesco Quochi, Michele Saba, Andrea Mura, Giovanni Bongiovanni
Metal-halide perovskite solar cells rival the best inorganic solar cells in power conversion efficiency, providing the outlook for efficient, cheap devices. In order for the technology to mature and approach the ideal Shockley-Queissier efficiency, experimental tools are needed to diagnose what processes limit performances, beyond simply measuring electrical characteristics often affected by parasitic effects and difficult to interpret. Here we study the microscopic origin of recombination currents causing photoconversion losses with an all-optical technique, measuring the electron-hole free energy as a function of the exciting light intensity...
March 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28315657/magnitude-and-determinants-of-adverse-treatment-outcomes-among-tuberculosis-patients-registered-under-revised-national-tuberculosis-control-program-in-a-tuberculosis-unit-wardha-central-india-a-record-based-cohort-study
#8
Anuj Mundra, Pradeep R Deshmukh, Ajay Dawale
INTRODUCTION: Deaths, defaults, relapses, and treatment failures have made the control of TB difficult across the globe. METHODOLOGY: This study is a record-based follow-up of a cohort of patients registered under Revised National Tuberculosis Control Program in the year 2014 in Wardha Tuberculosis Unit, India. Data were collected from the records available at the District Tuberculosis Office. RESULTS: Data of 510 patients were analyzed. The sputum conversion rate was 88%...
March 15, 2017: Journal of Epidemiology and Global Health
https://www.readbyqxmd.com/read/28314525/intraoperative-electromagnetic-navigational-bronchoscopic-localization-of-small-deep-or-subsolid-pulmonary-nodules
#9
Abbas Abbas, Sagar Kadakia, Vishnu Ambur, Kimberly Muro, Larry Kaiser
BACKGROUND: Localizing small or deep pulmonary nodules or subsolid ground-glass opacities often is difficult during video-assisted thoracoscopic surgery (VATS) or robotic-assisted thoracoscopic surgery (RATS). This can result in larger resections or conversion to thoracotomy. The goal of this study is to evaluate the role of electromagnetic navigational bronchoscopic localization (ENBL) as a safe and accurate intraoperative method to localize small, deep, or subsolid nodules. METHODS: This is a single-institution, single-surgeon retrospective study of all patients (51) who underwent combined ENBL and resection of 54 nodules between May 2013 and August 2015...
February 7, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28299189/molecular-signature-of-anastasis-for-reversal-of-apoptosis
#10
Ho Man Tang, C Conover Talbot, Ming Chiu Fung, Ho Lam Tang
Apoptosis is a type of programmed cell death that is essential for normal organismal development and homeostasis of multicellular organisms by eliminating unwanted, injured, or dangerous cells. This cell suicide process is generally assumed to be irreversible. However, accumulating studies suggest that dying cells can recover from the brink of cell death. We recently discovered an unexpected reversibility of the execution-stage of apoptosis in vitro and in vivo, and proposed the term anastasis (Greek for "rising to life") to describe this cell recovery phenomenon...
2017: F1000Research
https://www.readbyqxmd.com/read/28287746/design-of-heterogeneous-chalcogenide-nanostructures-with-pressure-tunable-gaps-and-without-electronic-trap-states
#11
Federico Giberti, Márton Vörös, Giulia Galli
Heterogeneous nanostructures, such as quantum dots (QDs) embedded in solid matrices or core-shell nanoparticles, are promising platforms for a wide variety of applications, including phosphors with increased quantum yield, photocatalysis, and solar energy conversion. However, characterizing and controlling their interfacial morphology and defects, which greatly influence their electronic properties, have proven difficult in numerous cases. Here we carried out atomistic calculations on chalcogenide nanostructured materials, i...
March 23, 2017: Nano Letters
https://www.readbyqxmd.com/read/28281928/amyloid-cores-in-prion-domains-key-regulators-for-prion-conformational-conversion
#12
María Rosario Fernández, Cristina Batlle, Marcos Gil-García, Salvador Ventura
Despite the significant efforts devoted to decipher the particular protein features that encode for a prion or prion-like behavior, they are still poorly understood. The well-characterized yeast prions constitute an ideal model system to address this question, because, in these proteins, the prion activity can be univocally assigned to a specific region of their sequence, known as the prion forming domain (PFD). These PFDs are intrinsically disordered, relatively long and, in many cases, of low complexity, being enriched in glutamine/asparagine residues...
January 2, 2017: Prion
https://www.readbyqxmd.com/read/28274216/primary-care-physicians-educational-needs-and-learning-preferences-in-end-of-life-care-a-focus-group-study-in-the-uk
#13
Lucy Ellen Selman, Lisa Jane Brighton, Vicky Robinson, Rob George, Shaheen A Khan, Rachel Burman, Jonathan Koffman
BACKGROUND: Primary care physicians (General Practitioners (GPs)) play a pivotal role in providing end of life care (EoLC). However, many lack confidence in this area, and the quality of EoLC by GPs can be problematic. Evidence regarding educational needs, learning preferences and the acceptability of evaluation methods is needed to inform the development and testing of EoLC education. This study therefore aimed to explore GPs' EoLC educational needs and preferences for learning and evaluation...
March 9, 2017: BMC Palliative Care
https://www.readbyqxmd.com/read/28272746/the-prevalence-of-diabetes-after-gestational-diabetes-an-australian-perspective
#14
Robert Geoffrey Moses, Ivana Goluza, Jay Philip Borchard, Alexandra Harman, Alicia Dunning, Marianna Milosavljevic
BACKGROUND: Women with gestational diabetes mellitus (GDM) are likely to develop diabetes in later life. International reports and reviews indicate a variable but generally high rate of conversion. However, data from international reports are difficult to apply to an Australian population. AIM: To investigate in Australia, in a representative population, the prevalence of diabetes developing in women who have been diagnosed with one criteria and who have had uniform standards of clinical care...
March 8, 2017: Australian & New Zealand Journal of Obstetrics & Gynaecology
https://www.readbyqxmd.com/read/28271041/the-cortical-signature-of-symptom-laterality-in-parkinson-s-disease
#15
Elizabeth Heinrichs-Graham, Pamela M Santamaria, Howard E Gendelman, Tony W Wilson
Patients with Parkinson's disease (PD) often present with unilateral motor symptoms that eventually spread to the other side. This symptom lateralization is diagnostically important, as it serves to distinguish PD from other motor disorders with overlapping symptom profiles. Further, recent studies have shown that the side of symptom onset is important for prognosis, as there are differences in the rate of disease progression and the incidence of secondary symptoms between right- and left-dominant (RD, LD) patients...
2017: NeuroImage: Clinical
https://www.readbyqxmd.com/read/28266285/molecular-diagnosis-of-non-serotypeable-shigella-spp-problems-and-prospects
#16
LETTER
Dhiviya Prabaa Muthuirulandi Sethuvel, Naveen Kumar Devanga Ragupathi, Shalini Anandan, Kamini Walia, Balaji Veeraraghavan
It is not always possible to identify Shigella serogroups/serotypes by biochemical properties alone. Specific identification requires serotyping. Occasionally, isolates that resemble Shigella spp. biochemically, but are non-agglutinable with available antisera, have been observed. Several mechanisms have been reported to limit the efficiency of the serotyping assay. Serotype conversion is a major mechanism in Shigella spp. to escape protective host immune responses. This easy conversion through significant modification of the O-antigen backbone results in different serotypes, which makes laboratory identification difficult...
February 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28262708/swcnt-photocatalyst-for-hydrogen-production-from-water-upon-photoexcitation-of-8-3-swcnt-at-680-nm-light
#17
Noritake Murakami, Yuto Tango, Hideaki Miyake, Tomoyuki Tajima, Yuta Nishina, Wataru Kurashige, Yuichi Negishi, Yutaka Takaguchi
Single-walled carbon nanotubes (SWCNTs) are potentially strong optical absorbers with tunable absorption bands depending on their chiral indices (n, m). Their application for solar energy conversion is difficult because of the large binding energy (>100 meV) of electron-hole pairs, known as excitons, produced by optical absorption. Recent development of photovoltaic devices based on SWCNTs as light-absorbing components have shown that the creation of heterojunctions by pairing chirality-controlled SWCNTs with C60 is the key for high power conversion efficiency...
March 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28250512/political-commitment-for-vulnerable-populations-during-donor-transition
#18
Daniela C Rodríguez, Alan Whiteside, Sara Bennett
The responsibilities for the programmatic, technical and financial support of health programmes are increasingly being passed from external donors to governments. Programmes for family planning, human immunodeficiency virus, immunization, malaria and tuberculosis have already faced such donor transition, which is a difficult and often political process. Wherever programmes and services aimed at vulnerable populations are primarily supported by donors, the post-transition future is uncertain. Overreliance on donor support is often a reflection of limited domestic political commitment...
February 1, 2017: Bulletin of the World Health Organization
https://www.readbyqxmd.com/read/28248876/obturator-externus-abscess-in-a-9-year-old-child-a-case-report-and-literature-review
#19
Charlotte de Bodman, Dimitri Ceroni, Justine Dufour, Pierre-Alex Crisinel, Aline Bregou-Bourgeois, Pierre-Yves Zambelli
RATIONALE: Obturator pyomyositis is a rare condition in children. Diagnosis is often delayed because of its rarity, and the vagaries of its presentation cause it to be easily be missed. Physicians should therefore familiarize themselves with this condition and consider it as a possible differential diagnosis in patients presenting with an acutely painful hip. Inflammatory syndrome is also frequent among sufferers and the MRI is a very sensitive diagnostic tool for obturator pyomyositis...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28247518/three-odorant-binding-proteins-may-regulate-the-behavioural-response-of-chrysopa-pallens-to-plant-volatiles-and-the-aphid-alarm-pheromone-e-%C3%AE-farnesene
#20
REVIEW
Z-Q Li, S Zhang, X-M Cai, J-Y Luo, S-L Dong, J-J Cui, Z-M Chen
Artificial Chrysopa pallens release is a well-known method for suppressing aphids, but it is difficult to establish lacewing populations in the field. Understanding the functions of C. pallens odorant-binding proteins (CpalOBPs) and behavioural responses of C. pallens to plant volatiles and aphid alarm pheromone (E)-ß-farnesene has important implications for population establishment after lacewing release. Based on our previous study, five antennae-enriched CpalOBPs were selected. Sequence alignment and phylogenetic analysis revealed that these five CpalOBPs were Classic OBPs and separated into different clades...
March 1, 2017: Insect Molecular Biology
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