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Enrique Barragán-Garza, Douglas D Koch, Luis G Vargas, Alan Lang, Adam Roy
PURPOSE: To assess the clinically acceptable range of inlay decentration with respect to the light-constricted pupil center and the coaxially sighted corneal light reflex (CSCLR) for an inlay (Raindrop Near Vision Inlay; ReVision Optics, Inc., Lake Forest, CA) that reshapes the anterior corneal surface. METHODS: In this retrospective, observational cohort study of 115 patients with emmetropic or low hyperopic presbyopia who were implanted with a shape-changing corneal inlay, visual acuity, task performance (in good and dim light), reports of halos and glare, and satisfaction data were collected from the preoperative and 3-month postoperative examinations...
March 1, 2018: Journal of Refractive Surgery
Ikhyun Jun, David Sung Yong Kang, Dan Z Reinstein, Samuel Arba-Mosquera, Timothy J Archer, Kyoung Yul Seo, Tae-Im Kim
PURPOSE: To comparatively investigate the clinical outcomes, vector parameters, and corneal aberrations of small incision lenticule extraction (SMILE) with a triple centration technique and corneal wavefront-guided transepithelial photorefractive keratectomy (PRK) for the correction of high astigmatism. METHODS: This retrospective, comparative case series study included 89 eyes (89 patients) that received treatment for myopia with high astigmatism (≥ 2.50 diopters) using SMILE with a triple centration technique (SMILE group; 45 eyes) and corneal wavefront-guided transepithelial PRK (transepithelial PRK group; 44 eyes)...
March 1, 2018: Journal of Refractive Surgery
Richard W Helms, Xiaowei Zhao, Rony R Sayegh
PURPOSE: To study the effect of decentration and tilt of the type I Boston keratoprosthesis (KPro) on image quality in both aphakic and pseudophakic eyes. METHODS: An optical ray-tracing program was used to simulate the image projected onto the retina in an eye with a perfectly centered KPro, and in eyes with varying degrees of KPro decentration and tilt. Decentration was modeled along a typical white-to-white distance of 12.0 mm, and the corresponding tilt was calculated assuming a radius of curvature of 8...
March 6, 2018: Cornea
Seol Baek, Seung-Ryong Kwon, Song Yi Yeon, Sun-Heui Yoon, Chung Mu Kang, Seok Hee Han, Dahye Lee, Taek Dong Chung
We suggest electrochemiluminescence (ECL) sensing platform driven by eco-friendly, disposable, and miniaturized reverse elec-trodialysis (RED) patches as an electric power source. The flexible RED patches composed of ion-exchange membranes (IEMs) can produce voltage required for ECL sensing by simply choosing the appropriate number of the IEMs and the ratio of salt con-centrations. We integrate the RED patch with a bipolar electrode on the microfluidic chip to demonstrate the proof-of-concept, i.e. glucose detection in the range of 0...
March 9, 2018: Analytical Chemistry
Veronica E Aponte-Morales, Karl A Payne, Jeffrey A Cunningham, Sarina J Ergas
Nitrification of high total ammonia nitrogen-strength wastewaters is challenging due to free ammonia (FA) inhibition of nitrification. FA inhibition can potentially be alleviated by temporarily adsorbing ammonium (NH4+) to natural zeolite, such as chabazite, followed by direct zeolite bioregeneration via nitrification. In this research, the effectiveness of chabazite addition for reducing nitrification inhibition during treatment of centrate from anaerobic digestion of swine waste was quantified. A mathematical model was developed that accounts for ion exchange of NH4+ and sodium at the chabazite surface, surface diffusion of adsorbed NH4+ within the chabazite grains, sequential nitrification of aqueous NH4+ to nitrite and nitrate, and inhibition of nitritation and nitratation rates by NH4+...
March 5, 2018: Environmental Science & Technology
Shiping Bai, Keying Zhang, Xuemei Ding, Jianping Wang, Qiufeng Zeng, Huanwei Peng, Yue Xuan, Zuowei Su, Jie Bai
Salmonella and the host battle for iron (Fe), due to its importance for fundamental cellular processes. To investigate Fe redistribution of Salmonella-infected hens and the effects of high dietary Fe on it, Salmonella-free hens were randomly assigned to 1 of 4 treatments in 2 (two dietary Fe level) × 2 (Salmonella-inoculation or -noninoculation) factorial assignment. After feeding a basal diet supplemented with 60 (adequate, control) or 300 mg Fe/kg (high-Fe) for 4 weeks, 59-week-old Salmonella-free hens were orally inoculated with 5 × 107 colony-forming units of Salmonella Typhimurium (infection) or PBS (vehicle)...
February 24, 2018: Biological Trace Element Research
Bryce A Figdore, H David Stensel, Mari-Karoliina H Winkler
Sidestream granular activated sludge grown on anaerobic digester dewatering centrate was bioaugmented and selectively retained to enable high nitrification performance of a 2.5-day aerobic SRT non-nitrifying flocculent activated sludge system at 12 °C. Sidestream-grown granules performed enhanced biological phosphorus removal (EBPR) and short-cut nitrogen removal via nitrite. After bioaugmentation, EBPR continued in the mainstream but ammonia oxidation was eventually to nitrate. Low effluent NH3 -N concentrations from 0...
February 14, 2018: Water Research
Andrew J Ward, Kimmo Arola, Emma Thompson Brewster, Chirag M Mehta, Damien J Batstone
Nutrient recovery performance utilising an electrodialysis (ED) process was quantified in a 30-cell pair pilot reactor with a 7.2 m2 effective membrane area, utilising domestic anaerobic digester supernatant, which had been passed through a centrifuge as a feed source (centrate). A concentrated product (NH4 -N 7100 ± 300 mg/L and K 2490 ± 40 mg/L) could be achieved by concentrating nutrient ions from the centrate wastewater dilute feed stream to the product stream using the ED process. The average total current efficiency for all major cations over the experimental period was 76 ± 2% (NH4 -N transport 40%, K transport 14%)...
February 8, 2018: Water Research
Dan Z Reinstein, Timothy J Archer, Glenn I Carp, Alastair J Stuart, Elizabeth L Rowe, Andrew Nesbit, Tara Moore
PURPOSE: To report the incidence, visual and refractive outcomes, optical zone enlargement, and recentration using topography-guided CRS-Master TOSCA II software with the MEL 80 excimer laser (Carl Zeiss Meditec AG, Jena, Germany) after primary myopic laser refractive surgery. METHODS: Retrospective analysis of 73 eyes (40 patients) with complaints of night vision disturbances due to either a decentration or small optical zone following a primary myopic laser refractive surgery procedure using the MEL 80 laser...
February 1, 2018: Journal of Refractive Surgery
Ahlem Jebali, F Gabriel Acién, Sami Sayadi, Emilio Molina-Grima
This work investigates the production of the native microalgae strain Scenedesmus sp. in semi-continuous mode at lab scale in open raceway-simulating reactors and using centrate as the culture medium. The biomass productivity and nutrient removal capacity of Scenedesmus sp. at different dilution rates were investigated indoors as well as its tolerance to centrate as the culture medium at different concentrations. A biomass productivity of 7.80 g/m2 day was obtained at 200 μE/m2 s, 5 cm culture depth, 0...
January 25, 2018: Journal of Environmental Management
Chandrashekhar M Badakar, Prachi J Thakkar, Shivayogi M Hugar, Pratibha Kukreja, Harsha G Assudani, Niraj Gokhale
Aim: To determine and compare the relevance of Piaget's cognitive principles among 4- to 7-year-old parented and orphan children in Belagavi City, Karnataka, India. Materials and methods: This study was conducted on 240 children between the ages of 4 to 7 years who were equally divided into two groups of 120 parented and 120 orphan children. These were subdivided into four groups of 30 children each. Various characteristics like egocentrism, concept of cardinal numbers based on centration, lack of conservation, and reversibility were assessed, using experiments and comparison of their prevalence between two groups was carried out...
October 2017: International Journal of Clinical Pediatric Dentistry
M Abel-Denee, T Abbott, C Eskicioglu
The primary objective of this research was to remove recalcitrant nutrients from anaerobically digested sludge dewatering centrate. A struvite precipitation methodology is proposed where salt crystals are encouraged to ballast colloidal particles through heterogeneous nucleation and subsequent crystal growth. The secondary objective was to assess presence of micropollutants in precipitates. Four biologically unique dewatering centrates were used to test the precipitation methodology on the variety of anaerobic digester configurations that can be expected from municipal wastewater treatment plant...
January 5, 2018: Water Research
D A Кurinnyi, S R Rushkovsky, O M Demchenko, M A Pilinska
OBJECTIVE: To identify the possibility of modification by astaxanthin the level of genome damages induced by gamma quanta in the culture of human peripheral blood lymphocytes exposed in vitro on postsynthetic (G2) phase of the first mitotic cycle. MATERIALS AND METHODS: Peripheral blood lymphocytes from four apparently healthy volunteers 35-51 years old were cultivated using modified micromethod. To obtain genomic damages in G2 phase of the first mitotic cycle the part of cultures was irradiated by γ quanta in dose 1...
December 2017: Problemy Radiat︠s︡iĭnoï Medyt︠s︡yny Ta Radiobiolohiï
Anna Huta-Osiecka, Zbigniew Kasprzak, Krystian Wochna, Alicja Nowak
BACKGROUND: Nutrition and lifestyle factors play an important role in the development and maintenance of peak bone mass and the prevention of bone degradation. The aim of the present study was to assess 25-hydroxy- cholecalciferol [25(OH)D] serum concentration in postmenopausal women during the winter period and the supply of selected components in their diet. METHODS: The study was conducted on a group of 35 women aged 54–77, using a question- naire, including a 24-hour recall related to a subject’s nutrient consumption...
October 2017: Acta Scientiarum Polonorum. Technologia Alimentaria
Bozho Todorich, Maxwell S Stem, Keshav Kooragayala, Aristomenis Thanos, Lisa J Faia, George A Williams, Tarek S Hassan, Maria A Woodward, Jeremy D Wolfe
PURPOSE: To describe surgical outcomes and structural characteristics of intraocular lenses (IOLs) implanted with transconjunctival sutureless intrascleral (SIS) fixation in human eyes. DESIGN: Retrospective interventional surgical case series involving live and cadaveric human eyes. METHODS: In this study, we investigated the surgical outcomes and structural anatomy of secondary IOLs implanted with the SIS technique in human eyes. All cases involving SIS IOL fixation performed at a single academic center from January 1, 2012, through July 30, 2016, were reviewed to describe the surgical technique, common indications, clinical outcomes, and the rate of common operative complications...
December 11, 2017: Retina
Eric E Pazo, Richard N McNeely, Olivier Richoz, M Andrew Nesbit, Tara C B Moore, Jonathan E Moore
PURPOSE: To evaluate the influences of preoperative pupil parameters on the visual outcomes of the SBL-3, a rotationally asymmetric multifocal intraocular lens (IOL) with a surface-embedded near segment. SETTING: Cathedral Eye Clinic, Belfast, Northern Ireland, United Kingdom. DESIGN: Retrospective comparative case series. METHODS: Postoperatively, patients divided into 4 groups according to their pupil size as follows: Group A: 2...
November 2017: Journal of Cataract and Refractive Surgery
Prakhyat Roop
In existing designs of intraocular lenses (IOLs), optical outcomes are compromised even after perfectly executed surgery. The reason for this is misalignment of optical axis of the eye and its visual axis. There is a need to design an IOL which compensates for this misalignment and hence enhances the optical outcomes of cataract surgery. The present innovation attempts to fulfill this unmet need and optimizes optical outcomes of all IOLs of different optical profiles - spherical, aspheric, toric, and multifocal...
December 2017: Indian Journal of Ophthalmology
Manpreet Kaur, Farin Shaikh, Ruchita Falera, Jeewan S Titiyal
Toric intraocular lenses (IOLs) are the procedure of choice to correct corneal astigmatism of 1 D or more in cases undergoing cataract surgery. Comprehensive literature search was performed in MEDLINE using "toric intraocular lenses," "astigmatism," and "cataract surgery" as keywords. The outcomes after toric IOL implantation are influenced by numerous factors, right from the preoperative case selection and investigations to accurate intraoperative alignment and postoperative care...
December 2017: Indian Journal of Ophthalmology
Chunhua Xin, Min M Addy, Jinyu Zhao, Yanling Cheng, Yiwei Ma, Shiyu Liu, Dongyan Mu, Yuhuan Liu, Paul Chen, Roger Ruan
Combining wastewater treatment and biofuel production is considered the cost-effective way for better waste remediation and lowering the environmental impact for biofuel production. In this study, an innovative integrated system incorporating sludge, scum and centrate treatment and biofuel production was developed. A comprehensive techno-economic analysis was conducted to evaluate the technology and economic feasibility of the integrated system with the consideration of biofuel production, wastewater treatment improvement, tax credits, carbon credit, and coproducts utilization...
November 14, 2017: Bioresource Technology
Yongjun Hu, Zhaofen Zheng, Hongwei Pan, Jianqiang Peng, Yangping Luo, Bo Cui, Xin Zhong
Programmed cell death plays an important role in cardio protection, and Notch1 was an important factor related to programmed cell death. The role of Notch1 on ischemia myocardium remains unclear.H9C2 myocardial cells were cultured with routine medium, transfected with Notch1 over expression plasmid, Notch1-siRNA-overexpression plasmid and vehicle plasmid for further hypoxic experiment. Condition of hypoxic experiment was 1% oxygen centration and culturing for 12hours, then the cell proliferation activity and apoptosis rate was assessed by MTS kit and flow cytometry, respectively...
November 2017: Pakistan Journal of Pharmaceutical Sciences
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