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https://www.readbyqxmd.com/read/29240127/optimal-design-for-the-support-structure-of-a-cavity-mirror-in-a-chemical-oxygen-iodine-laser-resonator
#1
Ding Cui, Zhaoxiang Deng, Yuqiang Xian, Xiaoyang Hu, Lin Zhang
The dynamic characteristics of the cavity mirror support structure strongly influence the quality of the output beam. However, the contradiction between excellent dynamic performance and light weight make the design process challenging. To cope with the problems encountered in the original design of a chemical oxygen iodine laser system, this paper presents a two-dimensional adjustable support structure based on spherical constraints with large specific stiffness in the initial design phase. Subsequently, a two-level optimization strategy containing a macro design and a detailed design is adopted to optimize the initial structure...
December 10, 2017: Applied Optics
https://www.readbyqxmd.com/read/29238114/quantitative-evaluation-of-performance-of-3d-printed-lenses
#2
John Gawedzinski, Michal E Pawlowski, Tomasz S Tkaczyk
We present an analysis of the shape, surface quality, and imaging capabilities of custom 3D printed lenses. 3D printing technology enables lens prototypes to be fabricated without restrictions on surface geometry. Thus, spherical, aspherical and rotationally non-symmetric lenses can be manufactured in an integrated production process. This technique serves as a noteworthy alternative to multistage, labor-intensive, abrasive processes such as grinding, polishing and diamond turning. Here, we evaluate the quality of lenses fabricated by Luxexcel using patented Printoptical© technology that is based on an inkjet printing technique by comparing them to lenses made with traditional glass processing technologies (grinding, polishing etc...
2017: Optical Engineering: the Journal of the Society of Photo-optical Instrumentation Engineers
https://www.readbyqxmd.com/read/29237948/optical-coherence-tomography-in-oral-cancer-a-transpiring-domain
#3
REVIEW
Reddy Sudhakara Reddy, Kotu Nagavenkata Sai Praveen
Identification of oral cancer at an early curable stage not only aids in controlling the mortality and morbidity rate but also improves the quality of life of the patient. Indeed, regular monitoring of such life-threatening disease has held an imperative role in cancer diagnostics. Various light-based diagnostics are currently available to the clinician for early diagnosis of oral cancer. Optical coherence tomography (OCT) is one such emerging light-based diagnostic modality that provides noninvasive, real-time images at a depth of 1...
October 2017: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/29237369/signal-enhancement-strategies-for-refractive-index-sensitive-nanobiosensor
#4
Amir Syahir, Kotaro Kajikawa, Hisakazu Mihara
Direct bio-monitoring essentially involves optical means since the photon has insignificant effects over biomolecules. Over the years, the laser induced surface plasmon resonance method with various modifications as well as versatile localized plasmon excited by incoherent light have facilitated in recording many nanobiological activities. Yet monitoring interactions of small molecules including drugs requires signal amplification and improvement on signal-to-noise ratio. This paper focused on how the refractive index based nanobio-sensoring gold platform can produce more efficient, adaptable and more practical detection techniques to observe molecular interactions at a high degree of sensitivity...
December 13, 2017: Protein and Peptide Letters
https://www.readbyqxmd.com/read/29237048/latent-profiles-of-physical-activity-and-sedentary-behavior-in-elementary-school-age-youth-associations-with-health-related-quality-of-life
#5
Tarrah B Mitchell, Ric G Steele
Objective: The objectives were to identify and describe profiles of elementary school-age youth based on objective measurements of total time spent in moderate-to-vigorous physical activity (MVPA) and sedentary behavior (SB) and in bouts of the activities, to examine predictors of profiles, and to examine whether profiles were differentially associated with physical and psychosocial health-related quality of life (HRQOL). Methods: Participants included 204 youth (aged 8-11 years) who wore accelerometers to gather objective activity data...
December 11, 2017: Journal of Pediatric Psychology
https://www.readbyqxmd.com/read/29236037/calibration-of-binocular-vision-sensors-based-on-unknown-sized-elliptical-stripe-images
#6
Zhen Liu, Suining Wu, Yang Yin, Jinbo Wu
Most of the existing calibration methods for binocular stereo vision sensor (BSVS) depend on a high-accuracy target with feature points that are difficult and costly to manufacture and. In complex light conditions, optical filters are used for BSVS, but they affect imaging quality. Hence, the use of a high-accuracy target with certain-sized feature points for calibration is not feasible under such complex conditions. To solve these problems, a calibration method based on unknown-sized elliptical stripe images is proposed...
December 13, 2017: Sensors
https://www.readbyqxmd.com/read/29235073/-quality-of-life-of-nursing-home-residents-with-dementia-before-during-and-after-playing-with-a%C3%A2-magic-table
#7
Leonie Bruil, Marian J M Adriaansen, Judith W M Groothuis, Ercolie R Bossema
The 'Active Cues Magic Table' is a new game concept within nursing home care. It consists of light animations projected on a dining table and responding to movements of the players. The aim of this exploratory, quasi-experimental study was to examine the quality of life of nursing home residents with moderately severe or severe dementia before, during and after playing with this magic table. Quality of life was assessed with the Qualidem and the DS-DAT. Of the 34 nursing home residents included, 62% were female and mean age was 86...
December 12, 2017: Tijdschrift Voor Gerontologie en Geriatrie
https://www.readbyqxmd.com/read/29234667/a-matter-of-taste-lineage-specific-loss-of-function-of-taste-receptor-genes-in-vertebrates
#8
REVIEW
Marco Antinucci, Davide Risso
Vertebrates can perceive at least five different taste qualities, each of which is thought to have a specific role in the evolution of different species. The avoidance of potentially poisonous foods, which are generally bitter or sour tasting, and the search for more nutritious ones, those with high-fat and high-sugar content, are two of the most well-known examples. The study of taste genes encoding receptors that recognize ligands triggering taste sensations has helped to reconstruct several evolutionary adaptations to dietary changes...
2017: Frontiers in Molecular Biosciences
https://www.readbyqxmd.com/read/29234664/perceptions-of-important-characteristics-of-physical-activity-facilities-implications-for-engagement-in-walking-moderate-and-vigorous-physical-activity
#9
Katie M Heinrich, Christopher K Haddock, Natinee Jitnarin, Joseph Hughey, LaVerne A Berkel, Walker S C Poston
Background: Although few United States adults meet physical activity recommendations, those that do are more likely to access to physical activity facilities. Additionally, vigorous exercisers may be more likely to utilize a nearby physical activity facility, while light-to-moderate exercisers are less likely to do so. However, it is unclear what characteristics of those facilities are most important as well as how those characteristics are related to activity intensity. Purpose: This study examined relationships between self-reported leisure-time physical activities and the use of and perceived characteristics of physical activity facilities...
2017: Frontiers in Public Health
https://www.readbyqxmd.com/read/29234458/robust-genetic-transformation-of-sorghum-sorghum-bicolor-l-using-differentiating-embryogenic-callus-induced-from-immature-embryos
#10
Srinivas Belide, Thomas Vanhercke, James Robertson Petrie, Surinder Pal Singh
Background: Sorghum (Sorghum bicolor L.) is one of the world's most important cereal crops grown for multiple applications and has been identified as a potential biofuel crop. Despite several decades of study, sorghum has been widely considered as a recalcitrant major crop for transformation due to accumulation of phenolic compounds, lack of model genotypes, low regeneration frequency and loss of regeneration potential through sub-cultures. Among different explants used for genetic transformation of sorghum, immature embryos are ideal over other explants...
2017: Plant Methods
https://www.readbyqxmd.com/read/29233648/left-atrial-dysfunction-in-light-chain-cardiac-amyloidosis-and-hypertrophic-cardiomyopathy-a-comparative-three-dimensional-speckle-tracking-echocardiographic-analysis-from-the-magyar-path-study
#11
Dóra Földeák, Árpád Kormányos, Péter Domsik, Anita Kalapos, Györgyike Á Piros, Nóra Ambrus, Zénó Ajtay, Róbert Sepp, Zita Borbényi, Tamás Forster, Attila Nemes
INTRODUCTION: While cardiac amyloidosis (CA) is a rare systemic disease characterized by extracellular deposition of protein-derived fibrils, hypertrophic cardiomyopathy (HCM) is histopathologically characterized by myocyte hypertrophy and disarray, interstitial fibrosis, and small intramural coronary arteriole dysplasia. The aim of the present study was to compare left atrial (LA) volumetric and functional characteristics between light-chain (AL) CA and HCM by three-dimensional (3D) speckle-tracking echocardiography (STE)...
December 9, 2017: Portuguese Journal of Cardiology: An Official Journal of the Portuguese Society of Cardiology
https://www.readbyqxmd.com/read/29232921/the-importance-of-the-circadian-clock-in-regulating-plant-metabolism
#12
REVIEW
Jin A Kim, Hyun-Soon Kim, Seo-Hwa Choi, Ji-Young Jang, Mi-Jeong Jeong, Soo In Lee
Carbohydrates are the primary energy source for plant development. Plants synthesize sucrose in source organs and transport them to sink organs during plant growth. This metabolism is sensitive to environmental changes in light quantity, quality, and photoperiod. In the daytime, the synthesis of sucrose and starch accumulates, and starch is degraded at nighttime. The circadian clock genes provide plants with information on the daily environmental changes and directly control many developmental processes, which are related to the path of primary metabolites throughout the life cycle...
December 11, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29231925/expression-profiling-of-the-retina-of-pde6c-a-zebrafish-model-of-retinal-degeneration
#13
Liyun Zhang, Xinlian Zhang, Gaonan Zhang, Chi Pui Pang, Yuk Fai Leung, Mingzhi Zhang, Wenxuan Zhong
Retinal degeneration often affects the whole retina even though the disease-causing gene is specifically expressed in the light-sensitive photoreceptors. The molecular basis of the retinal defect can potentially be determined by gene-expression profiling of the whole retina. In this study, we measured the gene-expression profile of retinas microdissected from a zebrafish pde6cw59 (pde6c) mutant. This retinal-degeneration model not only displays cone degeneration caused by a cone-specific mutation, but also other secondary cellular changes starting from 4 days postfertilization (dpf)...
December 12, 2017: Scientific Data
https://www.readbyqxmd.com/read/29231890/development-and-verification-of-a-novel-robot-integrated-fringe-projection-3d-scanning-system-for-large-scale-metrology
#14
Hui Du, Xiaobo Chen, Juntong Xi, Chengyi Yu, Bao Zhao
Large-scale surfaces are prevalent in advanced manufacturing industries, and 3D profilometry of these surfaces plays a pivotal role for quality control. This paper proposes a novel and flexible large-scale 3D scanning system assembled by combining a robot, a binocular structured light scanner and a laser tracker. The measurement principle and system construction of the integrated system are introduced. A mathematical model is established for the global data fusion. Subsequently, a robust method is introduced for the establishment of the end coordinate system...
December 12, 2017: Sensors
https://www.readbyqxmd.com/read/29230437/one-step-volumetric-additive-manufacturing-of-complex-polymer-structures
#15
Maxim Shusteff, Allison E M Browar, Brett E Kelly, Johannes Henriksson, Todd H Weisgraber, Robert M Panas, Nicholas X Fang, Christopher M Spadaccini
Two limitations of additive manufacturing methods that arise from layer-based fabrication are slow speed and geometric constraints (which include poor surface quality). Both limitations are overcome in the work reported here, introducing a new volumetric additive fabrication paradigm that produces photopolymer structures with complex nonperiodic three-dimensional geometries on a time scale of seconds. We implement this approach using holographic patterning of light fields, demonstrate the fabrication of a variety of structures, and study the properties of the light patterns and photosensitive resins required for this fabrication approach...
December 2017: Science Advances
https://www.readbyqxmd.com/read/29229775/molecular-characterization-of-dxcf-cyanobacteriochromes-from-the-cyanobacterium-acaryochloris-marina-identifies-a-blue-light-power-sensor
#16
Masumi Hasegawa, Keiji Fushimi, Keita Miyake, Takahiro Nakajima, Yuki Oikawa, Gen Enomoto, Moritoshi Sato, Masahiko Ikeuchi, Rei Narikawa
Cyanobacteriochromes (CBCRs) are linear tetrapyrrole-binding photoreceptors that sense a wide range of wavelengths from ultraviolet to far-red. The primary photoreaction in these reactions is a Z/E isomerization of the double bond between rings C and D. After this isomerization, various color-tuning events establish distinct spectral properties of the CBCRs. Among the various CBCRs, the DXCF CBCR lineage is widely distributed among cyanobacteria. Because the DXCF CBCRs from the cyanobacterium Acaryochloris marina vary widely in sequence, we focused on these CBCRs in this study...
December 11, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29227301/palliative-care-in-gynecologic-oncology
#17
Daniel Karlin, Peter Phung, Christopher Pietras
PURPOSE OF REVIEW: Patients with gynecologic malignancies face many difficult issues in the course of their diseases, ranging from physical symptoms to advance care planning in light of a poor prognosis. This review examines the evidence supporting integration of palliative care early in the course of disease and symptom management, and provides a framework for difficult conversations. RECENT FINDINGS: Palliative care has been demonstrated to improve quality of life and promote survival if integrated early in the course of disease...
December 8, 2017: Current Opinion in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/29226688/performance-limits-of-luminescent-solar-concentrators-tested-with-seed-quantum-well-quantum-dots-in-a-selective-reflector-based-optical-cavity
#18
Hyung-Jun Song, Byeong Guk Jeong, Jaehoon Lim, Doh C Lee, Wan Ki Bae, Victor I Klimov
Luminescent solar concentrators (LSCs) can serve as large-area sunlight collectors for photovoltaic devices. An important LSC characteristic is a concentration factor (C), which is defined as the ratio of the output and the input photon flux densities. This parameter can be also thought of as an effective enlargement factor of a solar cell active area. Based on thermodynamic considerations, the C-factor can reach extremely high values that exceed those accessible with traditional concentrating optics. In reality, however, the best reported values of C are around 30...
December 11, 2017: Nano Letters
https://www.readbyqxmd.com/read/29226223/three-years-of-experience-with-a-workshop-for-medical-specialty-examiners-in-south-baden-a-project-report-and-initial-evaluation-results
#19
Irmgard Streitlein-Böhme, Wilhelm Niebling, Götz Fabry, Klaus Böhme
Introduction: An oral exam (30-60 minutes) is administered at the end of every post-graduate medical specialty program or is required to attain additional specialized qualifications. In both undergraduate and post-graduate medical education oral exams are not considered to be very objective or reliable. To improve the quality of exams in medical specialties, the Regional Medical Association for South Baden (Bezirksärztekammer Südbaden) decided in 2013 to offer a training program for head examiners and others responsible for administering exams in medical specialties...
2017: GMS Journal for Medical Education
https://www.readbyqxmd.com/read/29224349/identification-and-quantification-of-active-components-in-osmanthus-fragrans-fruits-by-hplc-esi-ms-ms
#20
Xiaoyan Liao, Fangli Hu, Zilin Chen
Ripe O. fragrans fruit is composed of purple peels, green pulps and light brown seeds. Since the biological effects such as antioxidative activities and platelet-aggregation inhibition are related to the phenolic compounds and flavonoids in O. fragrans fruits, these components have a great potential as functional food ingredient. In the work, active components in O. fragrans fruits extraction were investigated by HPLC-ESI-MS/MS. A total of twenty-eight compounds were identified and sixteen components were first discovered in O...
December 9, 2017: Journal of Agricultural and Food Chemistry
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