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https://www.readbyqxmd.com/read/29656564/picophytoplankton-size-and-biomass-around-equatorial-eastern-indian-ocean
#1
Yuqiu Wei, Jun Sun, Xiaodong Zhang, Jing Wang, Ke Huang
The cellular size and biomass of picophytoplankton were studied by flow cytometer during spring monsoon (March-May of 2015) in equatorial eastern Indian Ocean. We established an empirical relationship between forward scatter and cellular size to address the size and biomass of picophytoplankton. Results indicated that mean cell diameter of Prochlorococcus (0.60 μm) was the smallest, and then followed by Synechococcus (0.98 μm) and picoeukaryotic phytoplankton (1.05 μm). Thereafter, the biomass converted by abundance reached 0...
April 15, 2018: MicrobiologyOpen
https://www.readbyqxmd.com/read/29656514/microbial-diversity-and-biomarker-analysis-of-modern-freshwater-microbialites-from-laguna-bacalar-mexico
#2
D B Johnson, P A Beddows, T M Flynn, M R Osburn
Laguna Bacalar is a sulfate-rich freshwater lake on the Yucatan Peninsula that hosts large microbialites. High sulfate concentrations distinguish Laguna Bacalar from other freshwater microbialite sites such as Pavilion Lake and Alchichica, Mexico, as well as from other aqueous features on the Yucatan Peninsula. While cyanobacterial populations have been described here previously, this study offers a more complete characterization of the microbial populations and corresponding biogeochemical cycling using a three-pronged geobiological approach of microscopy, high-throughput DNA sequencing, and lipid biomarker analyses...
April 15, 2018: Geobiology
https://www.readbyqxmd.com/read/29656499/matrix-assisted-laser-desorption-ionization-time-of-flight-mass-spectrometry-analysis-of-36-blood-group-alleles-among-396-thai-samples-reveals-region-specific-variants
#3
Philaiphon Jongruamklang, Christoph Gassner, Stefan Meyer, Aksarakorn Kummasook, Marion Darlison, Chayanun Boonlum, Surin Chanta, Beat M Frey, Martin L Olsson, Jill R Storry
BACKGROUND: Blood group phenotype variation has been attributed to potential resistance to pathogen invasion. Variation was mapped in blood donors from Lampang (northern region) and Saraburi (central region), Thailand, where malaria is endemic. The previously unknown blood group allele profiles were characterized and the data were correlated with phenotypes. The high incidence of the Vel-negative phenotype previously reported in Thais was investigated. STUDY DESIGN AND METHODS: DNA from 396 blood donors was analyzed by matrix-assisted laser desorption/ionization-time-of-flight mass spectrometry...
April 15, 2018: Transfusion
https://www.readbyqxmd.com/read/29656474/assessment-of-motivation-levels-and-associated-factors-among-the-nursing-staff-of-tertiary-level-government-hospitals
#4
Rahul Pandey, Sonu Goel, Vipin Koushal
The present study assessed the motivation level of nurses working in 3 highly decorated tertiary-level government hospitals of India and also underpins the factors attributing to motivation levels. A sequential mixed-method design was used in this study wherein 400 nurses working in 5 units of nursing care in the hospitals were enrolled based upon proportionate random stratified sampling techniques. A self-administered questionnaire with Likert scale was developed based upon scale used by Mbindyo et al. The attributes of motivation were then categorized into external and internal attributes...
April 15, 2018: International Journal of Health Planning and Management
https://www.readbyqxmd.com/read/29656455/is-radiotherapy-the-work-of-the-devil
#5
Andrew Kneebone, Kirsten Van Gysen
In this issue, Ma and colleagues have published a provocative article assessing the burden of radiotherapy (RT) complications on a busy tertiary urology service [1]. Over a 6-month period, 21 patients contributed to 33 admissions attributed as radiotherapy complications accounting for 1.4% (13/924) of elective admissions and 7.2% (20/277) of emergency admissions. The majority were for control of bleeding but there were 4 sobering cases of major morbidity necessitating either a urinary diversion or cystoprostatectomy...
April 15, 2018: BJU International
https://www.readbyqxmd.com/read/29656446/hemodynamic-response-function-hrf-variability-confounds-resting-state-fmri-functional-connectivity
#6
D Rangaprakash, Guo-Rong Wu, Daniele Marinazzo, Xiaoping Hu, Gopikrishna Deshpande
PURPOSE: fMRI is the convolution of the hemodynamic response function (HRF) and unmeasured neural activity. HRF variability (HRFv) across the brain could, in principle, alter functional connectivity (FC) estimates from resting-state fMRI (rs-fMRI). Given that HRFv is driven by both neural and non-neural factors, it is problematic when it confounds FC. However, this aspect has remained largely unexplored even though FC studies have grown exponentially. We hypothesized that HRFv confounds FC estimates in the brain's default-mode-network...
April 15, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29656381/cowpea-an-overview-on-its-nutritional-facts-and-health-benefits
#7
REVIEW
Chathuni Jayathilake, Rizliya Visvanathan, Afka Deen, Ruksheela Bangamuwage, Barana C Jayawardana, Srinivas Nammi, Ruvini Liyanage
Cowpea (Vigna unguiculata) is a legume consumed as a high-quality plant protein source in many parts of the world. High protein and carbohydrate contents with relatively low fat content and complementary amino acid pattern to that of cereal grains make cowpea an important nutritional food in the human diet. Cowpea has gained more attention recently from consumers and researchers worldwide due to its exerted health beneficial properties including anti-diabetic, anti-cancer, anti-hyperlipidemic, anti-inflammatory and anti-hypertensive properties...
April 15, 2018: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/29656318/a-novel-tetrasubstituted-imidazole-as-a-prototype-for-the-development-of-anti-inflammatory-drugs
#8
Marcus Vinicius P S Nascimento, Antonio C M Munhoz, Lais C Theindl, Eduarda Talita B Mohr, Najla Saleh, Eduardo B Parisotto, Thaís A Rossa, Ariane Zamoner, Tania B Creczynski-Pasa, Fabíola B Filippin-Monteiro, Marcus M Sá, Eduardo Monguilhott Dalmarco
Although inflammation is a biological phenomenon that exists to protect the host against infections and/or related problems, its unceasing activation results in the aggravation of several medical conditions. Imidazoles, whether natural or synthetic, are molecules related to a broad spectrum of biological effects, including anti-inflammatory properties. In this study, we screened eight novel small molecules of the imidazole class synthesized by our research group for their in vitro anti-inflammatory activity...
April 14, 2018: Inflammation
https://www.readbyqxmd.com/read/29656312/evaluation-of-taurine-neuroprotection-in-aged-rats-with-traumatic-brain-injury
#9
Raeesa Gupte, Sarah Christian, Paul Keselman, Joshua Habiger, William M Brooks, Janna L Harris
Despite higher rates of hospitalization and mortality following traumatic brain injury (TBI) in patients over 65 years old, older patients remain underrepresented in drug development studies. Worse outcomes in older individuals compared to younger adults could be attributed to exacerbated injury mechanisms including oxidative stress, inflammation, blood-brain barrier disruption, and bioenergetic dysfunction. Accordingly, pleiotropic treatments are attractive candidates for neuroprotection. Taurine, an endogenous amino acid with antioxidant, anti-inflammatory, anti-apoptotic, osmolytic, and neuromodulator effects, is neuroprotective in adult rats with TBI...
April 14, 2018: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/29656255/microbial-iron-reduction-as-a-method-for-immobilization-of-a-low-concentration-of-dissolved-cadmium
#10
Chaolei Yuan, Tongxu Liu, Fangbai Li, Chengshuai Liu, Huanyun Yu, Weimin Sun, Weilin Huang
Much attention has been paid to the relationship between microbial iron reduction and the behavior of cadmium (Cd) recently, but most previous research has employed unrealistically high Cd concentrations (e.g., 2-55 mg L-1 ) and has failed to consider the effects of iron oxides and microbial cells together. We investigated the reduction of lepidocrocite by Shewanella oneidensis MR-1 in the presence of a low concentration of Cd using batch reactor systems. The results showed that with 422 μg L-1 added dissolved Cd2+ , an initial 137 μg L-1 decrease in aqueous Cd occurred due to adsorption onto lepidocrocite and that the further removal of remaining aqueous Cd occurred only in the system containing bacteria...
April 12, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29656232/gallium-incorporation-into-phosphate-based-glasses-bulk-and-thin-film-properties
#11
Bryan W Stuart, Colin A Grant, George E Stan, Adrian C Popa, Jeremy J Titman, David M Grant
The osteogenic ions Ca2+ , P5+ , Mg2+ , and antimicrobial ion Ga3+ were homogenously dispersed into a 1.45 µm thick phosphate glass coating by plasma assisted sputtering onto commercially pure grade titanium. The objective was to deliver therapeutic ions in orthopaedic/dental implants such as cementeless endoprostheses or dental screws. The hardness 4.7 GPa and elastic modulus 69.7 GPa, of the coating were comparable to plasma sprayed hydroxyapatite/dental enamel, whilst superseding femoral cortical bone...
March 30, 2018: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29656214/study-of-virulence-factor-of-candida-species-in-oral-lesions-and-its-association-with-potentially-malignant-and-malignant-lesions
#12
Graciela Del Valle Castillo, Silvia López de Blanc, Claudia Elena Sotomayor, Ana Isabel Azcurra
OBJECTIVE: The aim of this study was to explore the association between malignant and premalignant lesions and the virulence factor profile of Candida spp. recovered from different oral lesions. DESIGN: Candida spp. isolated from malignant lesions (squamous cell carcinoma, OC, n = 25), atypical lichen planus (AL, n = 11), chronic candidiasis (CC, n = 25), and asymptomatic carriers (WI, n = 15, control strains.) Isolates were identified in chromogenic medium, colony morphology and biochemical tests...
February 19, 2018: Archives of Oral Biology
https://www.readbyqxmd.com/read/29656204/surface-hydroxylation-regulates-cellular-osteogeneses-on-tio-2-and-ta-2-o-5-nanorod-films
#13
Liming Wang, Beibei Zhou, Zongguang Liu, Lingqing Dong, Kui Cheng, Wenjian Weng
Titanium and tantalum have been widely used for orthopedic and dental implant applications. However, how their inherent surface features regulate cellular osteogeneses still remains elusive. In this study, we engineered two distinct TiO2 and Ta2 O5 nanorod films as the two model oxidized surfaces to investigate their intrinsic osteogenic behaviors. The results indicated that the distinctive gradient on zeta potential against pH, corresponding to the deprotonation rate, but not the hydroxyl amount or hydroxylation polarity played a critical role on the cellular osteogenic performance...
April 5, 2018: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29656203/an-overview-of-quinazolines-pharmacological-significance-and-recent-developments
#14
REVIEW
V Alagarsamy, K Chitra, G Saravanan, V Raja Solomon, M T Sulthana, B Narendhar
Most of the drugs and pharmacologically relevant molecules possess heterocyclic ring structures and presence of hetero atoms or groupings divulges privileged specificities in their pharmacological targets. Especially the heterocyclic systems, quinazoline is a biologically imperative scaffold known to be linked with several pharmacological activities. Some of the protuberant pharmacological responses attributed to this system are analgesic, anti-inflammatory, anti-convulsant, sedative-hypnotic, anti-histaminic, anti-hypertensive, anti-cancer, anti-microbial, anti-tubercular and anti-viral activities...
March 30, 2018: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29656194/multiple-dynamic-al-based-floc-layers-on-ultrafiltration-membrane-surfaces-for-humic-acid-and-reservoir-water-fouling-reduction
#15
Baiwen Ma, Wenjiang Li, Ruiping Liu, Gang Liu, Jingqiu Sun, Huijuan Liu, Jiuhui Qu, Walter van der Meer
The integration of adsorbents with ultrafiltration (UF) membranes is a promising method for alleviating membrane fouling and reducing land use. However, adsorbents typically are only injected into the membrane tank once, resulting in a single dynamic protection layer and low removal efficiency over long-term operation. In addition, the granular adsorbents used can cause membrane surface damage. To overcome these disadvantages, we injected inexpensive and loose aluminum (Al)-based flocs directly into a membrane tank with bottom aeration in the presence of humic acid (HA) or raw water taken from the Miyun Reservoir (Beijing, China)...
April 5, 2018: Water Research
https://www.readbyqxmd.com/read/29656177/contribution-of-raman-and-surface-enhanced-raman-spectroscopy-sers-to-the-analysis-of-vehicle-headlights-dye-s-characterization
#16
Cyril Muehlethaler, Yin Pak Cheng, Syed K Islam, John R Lombardi
Although ubiquitous on accident scenes, the polymers from headlight optics are often neglected in hit-and-run cases, and their evidential value restrained to direct comparison once a corresponding vehicle is found. Multilayered automotive paint fragments are preferred for their access to corresponding databases (PDQ, EUCAP) to infer models and brands of cars. The potential of polymers headlights for providing forensic intelligence has never been exploited, principally due to the lack of diversity, of appropriate databases, and of case examples...
March 31, 2018: Forensic Science International
https://www.readbyqxmd.com/read/29656165/effect-of-elevated-ozone-and-varying-levels-of-soil-nitrogen-in-two-wheat-triticum-aestivum-l-cultivars-growth-gas-exchange-antioxidant-status-grain-yield-and-quality
#17
Ashutosh K Pandey, Annesha Ghosh, Madhoolika Agrawal, S B Agrawal
Tropospheric ozone (O3 ) is a phytotoxic air pollutant causing a substantial damage to plants and agriculture worldwide. Plant productivity is affected by several environmental factors, which interact with each other. Studies related to interactions involving O3 and different levels of nitrogen (N) are still rare and elusive. In the present study we grew two wheat cultivars (HD2967 and Sonalika) in open top chambers (OTC) under ambient (AO) and elevated O3 (EO) (ambient + 20 ppb O3 ) and provided two levels of N fertilization; (a) recommended nitrogen (RN), (b) 1...
April 12, 2018: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29656155/enhancing-photocatalytic-activities-of-titanium-dioxide-via-well-dispersed-copper-nanoparticles
#18
Junzhe Dong, Junzhi Ye, Dessy Ariyanti, Yixuan Wang, Shanghai Wei, Wei Gao
The modification of titanium dioxide (TiO2 ) using noble metal nanoparticles is considered as a promising technique to make electrode with outstanding photocatalytic performance. In this paper, self-organized anodic TiO2 nanotube arrays were decorated with well-distributed small Cu nanoparticles through a novel technique that combines magnetron sputtering and thermal dewetting. The obtained nanocomposite catalyst exhibited 4-fold increase in the photodegradation rate of methylene blue aqueous solution under solar light irradiation than anatase TiO2 prepared with same anodization conditions...
April 9, 2018: Chemosphere
https://www.readbyqxmd.com/read/29656068/controllable-fabrication-of-pt-nanocatalyst-supported-on-n-doped-carbon-containing-nickel-nanoparticles-for-ethanol-oxidation
#19
Jianguo Yu, Tangming Dai, Yuechao Cao, Yuning Qu, Yao Li, Juan Li, Yongnan Zhao, Haiyan Gao
In this paper, platinum nanoparticles were deposited on a carbon carrier with the partly graphitized carbon and the highly dispersive carbon-coated nickel particles. An efficient electron transfer structure can be fabricated by controlling the contents of the deposited platinum. The high resolution transmission electron microscopy images of Pt2 /Ni@CN-doped sample prove the electron transfer channel from Pt (1 1 1) crystal planes to graphite (1 0 0) or Ni (1 1 1) crystal planes due to these linked together crystal planes...
April 10, 2018: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29656062/the-impact-of-antibiotic-prescription-rates-on-the-incidence-of-mrsa-bloodstream-infections-a-county-level-u-s-wide-analysis
#20
Nikolaos Andreatos, Fadi Shehadeh, Elina Eleftheria Pliakos, Eleftherios Mylonakis
OBJECTIVES: To investigate the association of methicillin-resistant Staphylococcus aureus (MRSA) bloodstream infection with socioeconomic factors and antibiotic prescriptions at the county level. METHODS: MRSA bloodstream infection rates were extracted from the Medicare Hospital Compare database. Data on socioeconomic factors and antibiotic prescriptions were obtained from the U.S. Census Bureau and the Medicare Part D database, respectively. RESULTS: In multivariate analysis, antibiotic prescriptions demonstrated a powerful positive association with MRSA bloodstream infection rates [Coefficient (Coeff): 0...
April 12, 2018: International Journal of Antimicrobial Agents
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