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https://www.readbyqxmd.com/read/29332272/comparative-study-of-selenium-and-selenium-nanoparticles-with-reference-to-acute-toxicity-biochemical-attributes-and-histopathological-response-in-fish
#1
Neeraj Kumar, Kishore Kumar Krishnani, Narendra Pratap Singh
Recent studies have demonstrated that selenium (Se) and selenium nanoparticles (Se-NPs) exhibited toxicity at a higher concentration. The lethal concentration of Se and Se-NPs was estimated as 5.29 and 3.97 mg/L at 96 h in Pangasius hypophthalmus. However, the effect of different definite concentration of Se (4.5, 5.0, 5.5, and 6.0 mg/L) and Se-NPs (2.5, 3.0, 3.5, and 4.0 mg/L) was decided for acute experiment. Selenium and Se-NPs alter the biochemical attributes such as anti-oxidative status [catalase (CAT), superoxide dismutase (SOD), and glutathione-S-transferase (GST) activities], neurotransmitter enzyme, cellular metabolic enzymes, stress marker, and histopathology of P...
January 13, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29325387/-clinical-effects-of-pediatric-penetrating-keratoplasty-for-congenital-corneal-opacity
#2
S W Li, C Liu, T H Chen, J H Ning, T Zhang, F J Lyu, M Xu
Objective: To report the clinical results of pediatric penetrating keratoplasty (PKP) in patients under 3 years old with congenital corneal opacity. Methods: Retrospective study. Sixteen eyes of 12 patients who were treated with PKP in Aier Eye Hospital Group from June 2009 to December 2016 were enrolled in this study. All the patients were diagnosed as congenital corneal opacities: 8 cases (11 eyes) with Peter's anomaly I, 2 cases (3 eyes) with sclerocornea, and 2 cases (2 eyes) with corneal dermoid tumor combined with iris synechia...
December 11, 2017: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://www.readbyqxmd.com/read/29317884/evaluation-of-the-anti-schistosomal-effects-of-turmeric-curcuma-longa-versus-praziquantel-in-schistosoma-mansoni-infected-mice
#3
Atef Hussein, Samia Rashed, Ibrahim El Hayawan, Rabab El-Sayed, Hemat Ali
Background: Curcumin is the major active ingredient of Curcuma longa L., traditionally known as turmeric and has been shown to exhibit a wide range of pharmacological activities including anti-parasitic effect. However, it is found to be water-insoluble and has low bioavailability. The aim of this study was to explore the potential role of turmeric solved in olive oil either alone or in combination with praziquantel (PZQ) in treatment of schistosomiasis mansoni. Methods: The whole turmeric powder suspended in olive oil (as a solvent) is indicated to S...
October 2017: Iranian Journal of Parasitology
https://www.readbyqxmd.com/read/29315607/the-solar-ultraviolet-environment-at-the-ocean
#4
Curtis D Mobley, Brian L Diffey
Atmospheric and oceanic radiative transfer models were used to compute spectral radiances between 285 and 400 nm onto horizontal and vertical plane surfaces over water. The calculations kept track of the contributions by the sun's direct beam, by diffuse sky radiance, by radiance reflected from the sea surface, and by water-leaving radiance. Clear, hazy, and cloudy sky conditions were simulated for a range of sun zenith angles, wind speeds, and atmospheric ozone concentrations. The radiances were used to estimate erythemal exposures due to the sun and sky, as well as from radiation reflected by the sea surface and backscattered from the water column...
January 8, 2018: Photochemistry and Photobiology
https://www.readbyqxmd.com/read/29301212/a-review-of-oil-spill-remote-sensing
#5
REVIEW
Merv Fingas, Carl E Brown
The technical aspects of oil spill remote sensing are examined and the practical uses and drawbacks of each technology are given with a focus on unfolding technology. The use of visible techniques is ubiquitous, but limited to certain observational conditions and simple applications. Infrared cameras offer some potential as oil spill sensors but have several limitations. Both techniques, although limited in capability, are widely used because of their increasing economy. The laser fluorosensor uniquely detects oil on substrates that include shoreline, water, soil, plants, ice, and snow...
December 30, 2017: Sensors
https://www.readbyqxmd.com/read/29282887/air-assisted-dispersive-liquid-liquid-microextraction-based-on-a-new-hydrophobic-deep-eutectic-solvent-for-the-preconcentration-of-benzophenone-type-uv-filters-from-aqueous-samples
#6
Dandan Ge, Yi Zhang, Yixiu Dai, Shumin Yang
Deep eutectic solvents are considered as new and green solvents that can be widely used in analytical chemistry such as microextraction. In the present work, a new dl-menthol-based hydrophobic deep eutectic solvent was synthesized and used as extraction solvents in an air-assisted dispersive liquid-liquid microextraction method for preconcentration and extraction of benzophenone-type UV filters from aqueous samples followed by high-performance liquid chromatography with diode array detection. In an experiment, the deep eutectic solvent formed by dl-menthol and decanoic acid was added to an aqueous solution containing the UV filters, and then the mixture was sucked up and injected five times by using a glass syringe, and a cloudy state was achieved...
December 28, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/29278323/in-situ-observation-of-carbon-dioxide-capture-on-pseudo-liquid-eutectic-mixture-promoted-magnesium-oxide
#7
Hanyeong Lee, Monica L T Trivino, Soonha Hwang, Sung Hyun Kwon, Seung Geol Lee, Jun Hyuk Moon, Jungho Yoo, Jeong Gil Seo
Eutectic mixtures of alkali nitrates are known to increase the sorption capacity and kinetics of MgO-based sorbents. Underlying principles and mechanisms for CO2 capture on such sorbents have already been established; however, real-time observation of the system was not yet accomplished. In this work, we present the direct-observation of the CO2 capture phenomenon on a KNO3-LiNO3 eutectic mixture (EM)-promoted MgO sample, denoted as KLM, via in-situ transmission electron microscopy (in-situ TEM). Results revealed that the pseudo-liquid EM undergoes structural rearrangement as MgCO3 evolves from the surface of MgO, resulting to surface roughening and evolution of cloudy structures that stay finely distributed after regeneration...
December 26, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29258460/a-case-of-proliferative-diabetic-retinopathy-in-which-scintillating-particles-appeared-in-the-intravitreal-cavity-after-laser-photocoagulation
#8
Ryohsuke Kohmoto, Takatoshi Kobayashi, Takaki Sato, Daisaku Kimura, Masanori Fukumoto, Kensuke Tajiri, Teruyo Kida, Tsunehiko Ikeda
BACKGROUND: To report a case of proliferative diabetic retinopathy (PDR) exhibiting the appearance of scintillating particles presumed to be crystallin inside the intravitreal cavity after laser photocoagulation. CASE PRESENTATION: A 56-year-old male patient presented at our outpatient clinic after becoming aware of decreased vision in his right eye. Ocular examination performed at the patient's initial visit revealed a massive preretinal macular hemorrhage due to PDR in his right eye...
December 19, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/29249729/bilateral-anterior-segment-dysgenesis-with-the-presumed-peters-anomaly-in-a-cat
#9
Sangwan Park, Kiwoong Kim, Youngbeum Kim, Kangmoon Seo
A seven-month-old female domestic shorthaired cat was presented for buphthalmos in the right eye and corneal cloudiness in the left eye. Full ophthalmic examinations were performed for both eyes and enucleation was done for the right nonvisual eye. Congenital glaucoma caused by anterior segment dysgenesis was confirmed for the right eye. In the left eye, slit-lamp examination revealed focal corneal edema with several iris strands from iris collarette to the affected posterior corneal surfaces. Circular posterior corneal defect was suggested to be the cause of edema...
December 15, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/29240238/evaluation-of-microfiltration-and-heat-treatment-on-the-microbiological-characteristics-phenolic-composition-and-volatile-compounds-profile-of-pomegranate-juice-punica-granatum-l
#10
REVIEW
Antonio Colantuono, Paola Vitaglione, Nadia Manzo, Giuseppe Blaiotta, Immacolata Montefusco, Andrea Marrazzo, Fabiana Pizzolongo, Raffaele Romano
BACKGROUND: Since processing technology and storage may influence both sensory and nutritional value as well as the shelf-life of pomegranate juice (PJ), mild technologies based on microfiltration may be a promising alternative to heat treatments for fruit juices preservation. In this study, physico-chemical and microbiological properties of raw (RPJ), microfiltered (MPJ) and cloudy pasteurized PJ (PPJ) were compared over a period of 4 weeks. RESULTS: Data demonstrated that microfiltration was comparable to pasteurization in guarantying the microbiological stability of the juice avoiding spoilage of the final product...
December 14, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/29238118/mechanisms-and-model-diversity-of-trade-wind-shallow-cumulus-cloud-feedbacks-a-review
#11
REVIEW
Jessica Vial, Sandrine Bony, Bjorn Stevens, Raphaela Vogel
Shallow cumulus clouds in the trade-wind regions are at the heart of the long standing uncertainty in climate sensitivity estimates. In current climate models, cloud feedbacks are strongly influenced by cloud-base cloud amount in the trades. Therefore, understanding the key factors controlling cloudiness near cloud-base in shallow convective regimes has emerged as an important topic of investigation. We review physical understanding of these key controlling factors and discuss the value of the different approaches that have been developed so far, based on global and high-resolution model experimentations and process-oriented analyses across a range of models and for observations...
2017: Surveys in Geophysics
https://www.readbyqxmd.com/read/29234433/renoprotective-effects-of-total-glucosides-from-paeony-against-nephrotoxicity-induced-by-total-alkaloids-from-semen-strychni
#12
Mingming Lv, Meiyu Zhang, Yezhe Cheng, Kexia Zhang, Chenzhi Hou, Xiaohui Chen
Semen Strychni have been shown to have therapeutic effect in improving blood circulation, relieving rheumatic pain, and treating cancer. However, Semen Strychni could cause severe nephrotoxicity. The present study was designed to evaluate whether treatment with total glucosides from paeony (TGP) has renoprotective effect against nephrotoxicity induced by total alkaloids from Semen Strychni (TAS). The levels of blood urea nitrogen (BUN) and creatinine (Cr) were determined and histopathological changes were also examined to evaluate renal injury...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/29218315/a-novel-lens-cleaner-to-prevent-water-drop-adhesions-during-colonoscopy-and-esophagogastroduodenoscopy
#13
Naohisa Yoshida, Yuji Naito, Ritsu Yasuda, Takaaki Murakami, Kiyoshi Ogiso, Ryohei Hirose, Yutaka Inada, Osamu Dohi, Tetsuya Okayama, Kazuhiro Kamada, Kazuhiko Uchiyama, Takeshi Ishikawa, Osamu Handa, Hideyuki Konishi, Rafiz Abdul Rani, Yoshito Itoh
Background and study aims:  Water drop adhesions (WDA) impair endoscopic view during gastrointestinal endoscopy. We developed a novel lens cleaner designed using two types of harmLess surfactants and it is reported to be useful for preventing lens cloudiness during colorectal ESD. In the current study, we examined the ability of it for preventing and removing WDA. Patients and methods:  During laboratory experiments, the cleaner (Cleash; Fujifilm Co., Tokyo, Japan and Nagase Medicals Co...
December 2017: Endoscopy International Open
https://www.readbyqxmd.com/read/29216854/acute-clouding-of-trifocal-lens-during-implantation-a-case-report
#14
Qian Liu, Suhua Zhang, Xiaogang Wang, Weifang Cao, Yading Jia
BACKGROUND: Intraoperative IOLs clouding of several kinds of hydrophilic acrylic intraocular lenses (IOLs) have been reported due to temperature changes. This phenomenon reported previously occurred in cold countries and during the winter months. However, no clinical case was reported about trifocal IOL opacification during operation. We report a case in which acute opacification of the optical region occurred simultaneously when AT LISA tri 839mp(Carl Zeiss) was implanted into the eye...
December 8, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/29204686/weather-conditions-influence-the-number-of-psychiatric-emergency-room-patients
#15
Eva Janina Brandl, Tristram A Lett, George Bakanidze, Andreas Heinz, Felix Bermpohl, Meryam Schouler-Ocak
The specific impact of weather factors on psychiatric disorders has been investigated only in few studies with inconsistent results. We hypothesized that meteorological conditions influence the number of cases presenting in a psychiatric emergency room as a measure of mental health conditions. We analyzed the number of patients consulting the emergency room (ER) of a psychiatric hospital in Berlin, Germany, between January 1, 2008, and December 31, 2014. A total of N = 22,672 cases were treated in the ER over the study period...
December 4, 2017: International Journal of Biometeorology
https://www.readbyqxmd.com/read/29189476/pursuit-of-value-drives-strategy-to-improve-operations-and-outcomes
#16
Marna P Borgstrom, Ohm M Deshpande, Thomas J Balcezak
The future of American healthcare remains cloudy, with the shifting contours of regulatory and fiscal reform still being shaped. Providers are beset by many challenges that vary but often include state and federal healthcare funding decisions that are antithetical to the interests of patients and aging populations. Regional public health crises and rapidly evolving relationships with third-party payers complicate matters even further.Yale New Haven Health System decided to pursue value as its overriding strategy for navigating the uncertainty in healthcare that is likely to persist for years to come...
January 2017: Frontiers of Health Services Management
https://www.readbyqxmd.com/read/29166033/mapping-nanoscale-hotspots-with-single-molecule-emitters-assembled-into-plasmonic-nanocavities-using-dna-origami
#17
Rohit Chikkaraddy, V A Turek, Nuttawut Kongsuwan, Felix Benz, Cloudy Carnegie, Tim Van De Goor, Bart de Nijs, Angela Demetriadou, Ortwin Hess, Ulrich F Keyser, Jeremy J Baumberg
Fabricating nanocavities in which optically-active single quantum emitters are precisely positioned, is crucial for building nanophotonic devices. Here we show that self-assembly based on robust DNA-origami constructs can precisely position single molecules laterally within sub-5nm gaps between plasmonic substrates that support intense optical confinement. By placing single-molecules at the center of a nanocavity, we show modulation of the plasmon cavity resonance before and after bleaching the chromophore, and obtain enhancements of ≥ 4×10(3) with high quantum yield (≥ 50%)...
November 22, 2017: Nano Letters
https://www.readbyqxmd.com/read/29148825/on-the-growth-and-detectability-of-land-plants-on-habitable-planets-around-m-dwarfs
#18
Duo Cui, Feng Tian, Yuwei Wang, Changshen Li, Chaoqing Yu, Le Yu
One signature of life on Earth is the vegetation red edge (VRE) feature of land plants, a dramatic change of reflectivity at wavelength near 0.7 μm. Potentially habitable planets around M dwarfs are tidally locked, which can limit the distribution of land plants. In this study, we used a biogeochemical model to investigate the distribution of land plants on potentially habitable planets around M dwarfs driven by climate data produced in a general circulation model (GCM). When considering the effects of clouds, the observation time needed for VRE detection on nearby p = 1 exoplanets around nearby M dwarfs is on the order of days using a 25 m(2) telescope if a large continent faces Earth during observations...
November 17, 2017: Astrobiology
https://www.readbyqxmd.com/read/29141882/transparent-anemone-shrimp-ancylomenes-pedersoni-become-opaque-after-exercise-and-physiological-stress-in-correlation-with-increased-hemolymph-perfusion
#19
Laura E Bagge, Stephen T Kinsey, Justin Gladman, Sönke Johnsen
Whole-body transparency, an effective camouflage strategy in many aquatic species, can be disrupted by environmental and/or physiological stressors. We found that tail-flip escape responses temporarily disrupt the transparency of the anemone shrimp Ancylomenes pedersoni After as few as three tail flips, the previously transparent abdominal muscle became cloudy. Eliciting additional tail flips to the point of exhaustion (16±1 s.e.m.; n=23) resulted in complete opacity, though the original transparency returned after 20-60 min of inactivity...
November 15, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/29125662/how-do-mediterranean-shrub-species-cope-with-shade-ecophysiological-response-to-different-light-intensities
#20
M C Díaz-Barradas, M Zunzunegui, L Alvarez-Cansino, M P Esquivias, J Valera, H Rodríguez
Under natural conditions, light exposition for Mediterranean shrubs can be highly variable, especially during cloudy days or under a canopy, and can interfere with other environmental factors such as temperature and water availability. With the aim of decoupling the effect of radiation and temperature from water availability, we conducted an experiment where 2 perennial and 3 summer semi-deciduous shrub species were subjected to different levels of irradiation. In order to follow plant responses to light exposure, we measured gas exchange, photosystem II photochemical efficiency, photosynthetic pigments, and leaf mass area in spring and summer...
November 10, 2017: Plant Biology
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