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https://www.readbyqxmd.com/read/28438012/smartphone-based-dual-modality-imaging-system-for-quantitative-detection-of-color-or-fluorescent-lateral-flow-immunochromatographic-strips
#1
Yafei Hou, Kan Wang, Kun Xiao, Weijian Qin, Wenting Lu, Wei Tao, Daxiang Cui
Nowadays, lateral flow immunochromatographic assays are increasingly popular as a diagnostic tool for point-of-care (POC) test based on their simplicity, specificity, and sensitivity. Hence, quantitative detection and pluralistic popular application are urgently needed in medical examination. In this study, a smartphone-based dual-modality imaging system was developed for quantitative detection of color or fluorescent lateral flow test strips, which can be operated anywhere at any time. In this system, the white and ultra-violet (UV) light of optical device was designed, which was tunable with different strips, and the Sobel operator algorithm was used in the software, which could enhance the identification ability to recognize the test area from the background boundary information...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28437993/integrated-optical-force-sensors-using-focusing-photonic-crystal-arrays
#2
Jingkun Guo, Richard A Norte, S Gröblacher
Mechanical oscillators are at the heart of many sensor applications. Recently several groups have developed oscillators that are probed optically, fabricated from high-stress silicon nitride films. They exhibit outstanding force sensitivities of a few aN/Hz<sup>1/2</sup> and can also be made highly reflective, for efficient detection. The optical read-out usually requires complex experimental setups, including positioning stages and bulky cavities, making them impractical for real applications. In this paper we propose a novel way of building fully integrated all-optical force sensors based on low-loss silicon nitride mechanical resonators with a photonic crystal reflector...
April 17, 2017: Optics Express
https://www.readbyqxmd.com/read/28437974/efficient-reversible-phase-mask-for-tio-sub-2-sub-submicron-gratings-directly-printed-on-cylindrical-surfaces
#3
L Berthod, M Bichotte, I Verrier, C Veillas, T Kämpfe, F Vocanson, M Langlet, J Laukkanen, O Parriaux, Y Jourlin
In this article we present a radial phase mask specially designed and manufactured for direct micro-structuration under UV photolithography of a cylindrical surface covered by a photoresist TiO<sub>2</sub> film. The period of the phase mask is sub-micron (between 480 nm and 720 nm) and allows direct printing on several types of cylindrical components. With this dedicated reversible phase mask we have demonstrated the feasibility of a TiO<sub>2</sub> grating with a period of 960 nm, printed on a SiO<sub>2</sub> cylinder or inside a SiO<sub>2</sub> tube of 8 mm diameter...
April 17, 2017: Optics Express
https://www.readbyqxmd.com/read/28437933/optical-wave-parameters-for-spatially-dispersive-and-anisotropic-nanomaterials
#4
Andriy Shevchenko, Markus Nyman, Ville Kivijärvi, Matti Kaivola
Spatial dispersion is an intriguing property of essentially all nanostructured optical media. In particular, it makes optical waves with equal frequencies and polarizations have different wavelengths, if they propagate in different directions. This can offer new approaches to control light radiation and propagation. Spatially dispersive nanomaterials, such as metamaterials, are often treated in terms of wave parameters, such as refractive index and impedance retrieved from reflection and transmission coefficients of the material at each incidence angle...
April 17, 2017: Optics Express
https://www.readbyqxmd.com/read/28437918/modeling-and-designing-multilayer-2d-perovskite-silicon-bifacial-tandem-photovoltaics-for-high-efficiencies-and-long-term-stability
#5
Haejun Chung, Xingshu Sun, Aditya D Mohite, Rahul Singh, Lokendra Kumar, Muhammad A Alam, Peter Bermel
A key challenge in photovoltaics today is to develop cell technologies with both higher efficiencies and lower fabrication costs than incumbent crystalline silicon (c-Si) single-junction cells. While tandem cells have higher efficiencies than c-Si alone, it is generally challenging to find a low-cost, high-performance material to pair with c-Si. However, the recent emergence of 22% efficient perovskite photovoltaics has created a tremendous opportunity for high-performance, low-cost perovskite / crystalline silicon tandem photovoltaic cells...
April 17, 2017: Optics Express
https://www.readbyqxmd.com/read/28437914/a-sagnac-fourier-spectrometer
#6
Matthias Lenzner, Jean-Claude Diels
A spectrometer based on a Sagnac interferometer, where one of the mirrors is replaced by a transmission grating, is introduced. Since the action of a transmission grating is reversible, both directions experience the same diffraction at a given wavelength. At the output, the crossed wavefronts are imaged onto a camera, where their Fizeau fringe pattern is recorded. Each spectral element produces a unique spatial frequency, hence the Fourier transform of the recorded interferogram contains the spectrum. Since the grating is tuned to place zero spatial frequency at a selected wavelength, the adjoining spectrum is heterodyned with respect to this wavelength...
April 17, 2017: Optics Express
https://www.readbyqxmd.com/read/28437904/ray-mapping-with-surface-information-for-freeform-illumination-design
#7
Caleb Gannon, Rongguang Liang
A novel approach to incorporate surface information into the ray mapping method is proposed. This method calculates irradiance at the physical optical surface and target plane instead of the usually flat or hemispherical dummy surface, resulting in a mapping relationship which reflects the true geometry of the system. The robustness of the method is demonstrated in an extreme example (60° off axis) where the uniformity is as high as 82%.
April 17, 2017: Optics Express
https://www.readbyqxmd.com/read/28437892/high-performance-and-low-cost-transparent-electrodes-based-on-ultrathin-cu-layer
#8
David Ebner, Martin Bauch, Theodoros Dimopoulos
Transparent electrodes based on an ultrathin Cu layer, embedded between two dielectrics, are optimized by simulations and experiments. Different dielectrics are screened in transfer matrix simulations for maximizing the broad-band transmittance. Based on this, sputtered electrodes were developed with the Cu embedded between TiO<sub>X</sub>-coated glass or PET substrate and an Al-doped ZnO (AZO) top layer. It is found that, for ultrathin Cu layers, increased sputter power fosters island coalescence, leading to superior optical and electrical performance compared to previously reported Cu-based electrodes...
April 17, 2017: Optics Express
https://www.readbyqxmd.com/read/28437768/glomeromycota-communities-survive-extreme-levels-of-metal-toxicity-in-an-orphan-mining-site
#9
I Sánchez-Castro, V Gianinazzi-Pearson, J C Cleyet-Marel, E Baudoin, D van Tuinen
Abandoned tailing basins and waste heaps of orphan mining sites are of great concern since extreme metal contamination makes soil improper for any human activity and is a permanent threat for nearby surroundings. Although spontaneous revegetation can occur, the process is slow or unsuccessful and rhizostabilisation strategies to reduce dispersal of contaminated dust represent an option to rehabilitate such sites. This requires selection of plants tolerant to such conditions, and optimization of their fitness and growth...
April 21, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28437742/biological-treatment-of-model-dyes-and-textile-wastewaters
#10
Alicia Paz, Julia Carballo, María José Pérez, José Manuel Domínguez
Previous works conducted in our laboratory, reveled that Bacillus aryabhattai DC100 produce ligninolytic enzymes such as laccases and/or peroxidases, opening new applications in different bioprocesses, including the treatment of disposal residues such as dyestuffs from textile processing industries. This work described the degradation of three commercial model dyes Coomassie Brilliant Blue G-250 (CBB), Indigo Carmine (IC) and Remazol Brilliant Blue R (RBBR) under different culture media and operational conditions...
April 18, 2017: Chemosphere
https://www.readbyqxmd.com/read/28437625/imaging-guided-synergetic-therapy-of-orthotopic-transplantation-tumor-by-superselectively-arterial-administration-of-microwave-induced-microcapsules
#11
Shunsong Tang, Changhui Fu, Longfei Tan, Tianlong Liu, Jingsong Mao, Xiangling Ren, Hongying Su, Dan Long, Qianqian Chai, Zhongbing Huang, Xudong Chen, Jingzhuo Wang, Jun Ren, Xianwei Meng
It is an ambitious target to improve overall Hepatocellular Carcinoma therapeutic effects. Recently, MW ablation has emerged as a powerful thermal ablation technique, affording favorable survival with excellent local tumor control. To achieve better therapeutic effects of MW ablation, MW sensitizers are prepared for enhanced MW ablation to preferentially heat tumor territory. However, it is still not practicable for treatment of the orthotopic transplantation tumor. Herein, biocompatible and degradable methoxy poly(ethylene glycol)-poly(lactic-co-glycolic acid) (mPEG-PLGA) microcapsules with hierarchical structure have been designed for microwave-induced tumor therapy...
April 14, 2017: Biomaterials
https://www.readbyqxmd.com/read/28437612/combinatorial-library-based-on-restriction-enzyme-mediated-modular-assembly
#12
Cuiping Ma, Chao Liang, Yifan Wang, Mei Pan, Qianqian Jiang, Chao Shi
Combinatorial approaches in directed evolution were proven to be more efficient for exploring sequence space and innovating the function of protein. We presented modular assembly of secondary structures (MASS) for constructing a combinatorial library. In this approach, secondary structure elements were extracted from natural existing proteins, the common linkers were flanking secondary structure elements, then digested by Hinf I restriction endonuclease that was used in the construction of combinatorial library for the first time...
April 24, 2017: ACS Combinatorial Science
https://www.readbyqxmd.com/read/28437535/clinical-aspects-of-glucose-transporter-type-1-deficiency-information-from-a-global-registry
#13
Jian Hao, Dorothy I Kelly, Jianzhong Su, Juan M Pascual
Importance: Case reports regularly document unique or unusual aspects of glucose transporter type 1 deficiency (G1D). In contrast, population studies from which to draw global inferences are lacking. Twenty-five years after the earliest case reports, this deficiency still particularly affects treatment and prognostic counseling. Objective: To examine the most common features of G1D. Design, Setting, and Participants: In this study, data were collected electronically from 181 patients with G1D through a web-based, worldwide patient registry from December 1, 2013, through December 1, 2016...
April 24, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/28437523/emergency-department-query-for-patient-centered-approaches-to-sexual-orientation-and-gender-identity-the-equality-study
#14
Adil H Haider, Eric B Schneider, Lisa M Kodadek, Rachel R Adler, Anju Ranjit, Maya Torain, Ryan Y Shields, Claire Snyder, Jeremiah D Schuur, Laura Vail, Danielle German, Susan Peterson, Brandyn D Lau
Importance: The Institute of Medicine and The Joint Commission recommend routine documentation of patients' sexual orientation in health care settings. Currently, very few health care systems collect these data since patient preferences and health care professionals' support regarding collection of data about patient sexual orientation are unknown. Objective: To identify the optimal patient-centered approach to collect sexual orientation data in the emergency department (ED) in the Emergency Department Query for Patient-Centered Approaches to Sexual Orientation and Gender Identity study...
April 24, 2017: JAMA Internal Medicine
https://www.readbyqxmd.com/read/28437514/a-retrospective-study-on-possible-predictive-factors-for-long-term-temporomandibular-joint-degeneration-and-impaired-mobility-in-juvenile-arthritis-patients
#15
Stanimira I Kalaykova, Adriaan T Klitsie, Corine M Visscher, Machiel Naeije, Frank Lobbezoo
AIMS: To determine possible predictive factors for long-term temporomandibular joint (TMJ) degeneration and dysfunction in juvenile idiopathic arthritis (JIA) patients. METHODS: A total of 94 patients (77% female) who had received a JIA diagnosis in an outpatient rheumatology clinic from 1993 to 1994 at a mean ± standard deviation age of 8.3 ± 4.53 years were included in the study. At inclusion, TMJ status regarding condylar degeneration was assessed orthopantomographically and given a Rohlin and Petersson score of 0 or ≥ 1...
April 2017: Journal of Oral & Facial Pain and Headache
https://www.readbyqxmd.com/read/28437506/treatment-of-unstable-trochanteric-femur-fractures-proximal-femur-nail-versus-proximal-femur-locking-compression-plate
#16
Ashutosh Kumar Singh, Nidi Narsaria, Arun G R, Vivek Srivastava
Unstable trochanteric femur fractures are common fractures that are difficult to manage. We conducted a prospective study to compare functional outcomes and complications of 2 different implant designs, proximal femur nail (PFN) and proximal femur locking compression plate (PFLCP), used in internal fixation of unstable trochanteric femur fractures. On hospital admission, 48 patients with unstable trochanteric fractures were randomly assigned (using a sealed envelope method) to treatment with either PFN (24 patients) or PFLCP (24 patients)...
March 2017: American Journal of Orthopedics
https://www.readbyqxmd.com/read/28437496/novel-solution-for-massive-glenoid-defects-in-shoulder-arthroplasty-a-patient-specific-glenoid-vault-reconstruction-system
#17
David M Dines, Lawrence Gulotta, Edward V Craig, Joshua S Dines
Complex glenoid deformities present the most difficult challenges in shoulder arthroplasty. These deformities may be caused by severe degenerative or congenital deformity, posttraumatic anatomy, tumor, or, in most cases, bone loss after glenoid failure in anatomical total shoulder arthroplasty. Methods of treating severe bone loss have included inlay and onlay bone-graft options with augmented fixation and, in severe cases, salvage hemiarthroplasty with limited goal expectations. Unfortunately, none of these methods has provided consistently satisfactory reproducible results...
March 2017: American Journal of Orthopedics
https://www.readbyqxmd.com/read/28437426/representational-models-a-common-framework-for-understanding-encoding-pattern-component-and-representational-similarity-analysis
#18
Jörn Diedrichsen, Nikolaus Kriegeskorte
Representational models specify how activity patterns in populations of neurons (or, more generally, in multivariate brain-activity measurements) relate to sensory stimuli, motor responses, or cognitive processes. In an experimental context, representational models can be defined as hypotheses about the distribution of activity profiles across experimental conditions. Currently, three different methods are being used to test such hypotheses: encoding analysis, pattern component modeling (PCM), and representational similarity analysis (RSA)...
April 24, 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28437367/-effective-requesting-a-scoping-review-of-the-literature-on-asking-families-to-consent-to-organ-and-tissue-donation
#19
Jennifer A Chandler, Matthew Connors, Giles Holland, Sam D Shemie
BACKGROUND: Families are often asked to consent to the donation of their deceased relative's organs or tissues. These end-of-life conversations are important because they affect consent rates as well as the psychological impact of the decision for families. This scoping review of the literature on requesting family consent was prepared to support of the development of leading practice recommendations for end-of-life conversations with families of potential donors. A scoping review maps research activity in a field across a range of commentary and empirical study designs but does not attempt meta-synthesis of empirical data or quality assessment...
May 2017: Transplantation
https://www.readbyqxmd.com/read/28437358/integrated-multidimensional-maturity-assessments-predicting-the-high-risk-occurrence-of-peak-angle-velocity-during-puberty-in-progressive-female-idiopathic-scoliosis
#20
Benlong Shi, Saihu Mao, Leilei Xu, Xu Sun, Zezhang Zhu, Bangping Qian, Zhen Liu, Jack Chun Yiu Cheng, Yong Qiu
STUDY DESIGN: A consecutive and prospective longitudinal study. OBJECTIVE: To propose an integrated multidimensional maturity assessment that was designated as forming a reliable system precisely predicting the high-risk occurrence of peak angle velocity (PAV) in a group of progressive braced female idiopathic scoliosis (IS). SUMMARY OF BACKGROUND DATA: Scoliosis deterioration is believed to keep pace with the evolution of skeletal maturity during puberty...
May 2017: Clinical Spine Surgery
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