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https://www.readbyqxmd.com/read/29145113/denitrification-behavior-and-microbial-community-spatial-distribution-inside-woodchip-based-solid-phase-denitrification-w-spd-bioreactor-for-nitrate-contaminated-water-treatment
#1
Jiamin Zhao, Chuanping Feng, Shuang Tong, Nan Chen, Shanshan Dong, Tong Peng, Shunlong Jin
The NO3(-) removal pathway and microorganisms change along with the height of an up-flow W-SPD bioreactor was investigated in this study. Modeling and microbial community analysis were used to analyze the denitrification behavior in W-SPD bioreactor. The results showed that NO3(-) removal rate matched for zero-order (R(2) > 0.97) and first-order (R(2) > 0.94) combination Michaelis-Menten kinetics, whereas microbial reaction rate suited for modified logistic model (R(2) > 0.99). The excellent denitrification performance (92...
November 6, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/29144130/structural-phase-transitions-in-ptin2-at-high-pressure-a-theoretical-investigation
#2
P Modak, Ashok K Verma
A study of the bonding and electronic properties of intermetallics under pressure is crucial in the design and development of novel materials for useful applications. These properties are largely controlled by the underlying crystal structures. Here we investigated the high-pressure structural behavior of PtIn2 using crystal structure search calculations, which efficiently combine evolutionary algorithms and state-of-the-art density functional theory. Three new crystal structures, namely, Fe2B-type (I4/mcm, Z = 2), cotunnite-type (Pnma, Z = 4), and monoclinic (C2/m, Z = 2), are proposed at about 9...
November 16, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/29143845/pulse-laser-induced-fragmentation-of-carbon-quantum-dots-a-structural-analysis
#3
Han-Wei Chu, Ju-Yi Mao, Chia-Wen Lien, Pang-Hung Hsu, Yu-Jia Li, Jui-Yang Lai, Tai-Chia Chiu, Chih-Ching Huang
Carbon quantum dots (CQDs) have attracted enormous interest in recent years owing to their low cytotoxicity, excellent biocompatibility and strong fluorescence. They have been successfully employed in sensor, bio-imaging, and drug carrier applications. A complete understanding of their core-surface structure is essential for tuning their physical and chemical properties for various applications. Conventional characterizations of CQDs are conducted with electron microscopy or spectroscopy, such as transmission electron microscopy, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy and Raman spectroscopy...
November 16, 2017: Nanoscale
https://www.readbyqxmd.com/read/29138799/lychee-seed-extract-protects-against-neuronal-injury-and-improves-cognitive-function-in-rats-with-type-ii-diabetes-mellitus-with-cognitive-impairment
#4
Yong Tang, Chonglin Yu, Jianming Wu, Haixia Chen, Yuan Zeng, Xiuling Wang, Le Yang, Qibing Mei, Shousong Cao, Dalian Qin
Lychee seed is a traditional Chinese medicine and has many beneficial effects such as modulation of blood sugar and lipids, antioxidation, antivirus and antitumor. Studies have indicated that type II diabetes mellitus (T2DM) and Alzheimer's disease (AD) share common biological mechanisms including insulin resistance, impaired glucose metabolism, β‑amyloid (Aβ) formation, oxidative stress and presence of advanced glycation end products (AGEs). The present study investigated the effects of lychee seed extract (LSE) on neuroprotection, cognitive function improvement and possible underlying mechanisms in a rat model of T2DM with cognitive impairment...
November 9, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29131991/enhanced-mental-imagery-and-intact-perceptual-organization-in-schizotypal-personality-disorder
#5
Rebeka Maróthi, Szabolcs Kéri
According to a widely held view, psychotic disorders such as schizophrenia are characterized by a vague boundary between the perception of the external world and the inner imagery of persons, objects, and events. In this study, we addressed the perception-imagery debate in schizotypal personality disorder (SPD). Thirty individuals with SPD and 30 matched healthy subjects completed a lateral masking task. Participants were asked to detect a low-contrast Gabor patch flanked by two collinear Gabor masks. In the perceptual task, the masks were physically present, whereas in the imagery task, participants only imagined the masks...
November 6, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/29126217/change-in-pneumococcus-serotypes-but-not-mortality-or-morbidity-in-pre-and-post-13-valent-polysaccharide-conjugate-vaccine-era-epidemiology-in-a-pediatric-intensive-care-unit-over-10-years
#6
Kam Lun Hon, King Hang Chan, Pak Long Ko, Michelle Ho Yan Cheung, Kathy Yin C Tsang, Lawrence C N Chan, Renee W Y Chan, Ting Fan Leung, Margaret Ip
Aim: Pneumococcus is a common commensal and an important pathogen among children for which immunization is available. Some serotypes occasionally cause severe pneumococcal disease with high mortality and morbidity. We reviewed all pneumococcal serotypes and mortality/morbidity in a pediatric intensive care unit (PICU) following universal pneumococcal conjugate vaccine (PCV) immunization. Methods: A 13-valent PCV was introduced in the universal immunization program in late 2011 in Hong Kong...
November 6, 2017: Journal of Tropical Pediatrics
https://www.readbyqxmd.com/read/29106656/discrimination-serious-psychological-distress-and-church-based-emotional-support-among-african-american-men-across-the-life-span
#7
Ann W Nguyen, Linda M Chatters, Robert Joseph Taylor, María P Aranda, Karen D Lincoln, Courtney S Thomas
Objective: This study tested whether church-based social support buffers the negative effects of discrimination on serious psychological distress (SPD) among three age groups-early, middle, and late adulthood-of African American men. Methods: Negative binominal regression analyses for discrimination and SPD were performed using data from 1,271 African American men from the National Survey of American Life. Results: Discrimination was positively associated with SPD for all age groups...
July 3, 2017: Journals of Gerontology. Series B, Psychological Sciences and Social Sciences
https://www.readbyqxmd.com/read/29098466/prevalence-and-predictors-of-hair-pulling-disorder-and-excoriation-disorder-in-tourette-syndrome
#8
Erica Greenberg, Esther S Tung, Caitlin Gauvin, Lisa Osiecki, Kelly G Yang, Erin Curley, Angela Essa, Cornelia Illmann, Paul Sandor, Yves Dion, Gholson J Lyon, Robert A King, Sabrina Darrow, Matthew E Hirschtritt, Cathy L Budman, Marco Grados, David L Pauls, Nancy J Keuthen, Carol A Mathews, Jeremiah M Scharf
Trichotillomania/hair pulling disorder (HPD) and excoriation/skin picking disorder (SPD) are childhood-onset, body-focused repetitive behaviors that are thought to share genetic susceptibility and underlying pathophysiology with obsessive-compulsive disorder (OCD) and Tourette syndrome (TS). We sought to determine the prevalence of DSM-5 HPD and SPD in TS patients, and to identify clinical factors most associated with their co-morbidity with TS. Participants included 811 TS patients recruited from TS specialty clinics for a multi-center genetic study...
November 2, 2017: European Child & Adolescent Psychiatry
https://www.readbyqxmd.com/read/29096959/modelling-the-fine-scale-spatiotemporal-pattern-of-urban-heat-island-effect-using-land-use-regression-approach-in-a-megacity
#9
Yuan Shi, Lutz Katzschner, Edward Ng
Urban heat island (UHI) effect significantly raises the health burden and building energy consumption in the high-density urban environment of Hong Kong. A better understanding of the spatiotemporal pattern of UHI is essential to health risk assessments and energy consumption management but challenging in a high-density environment due to the sparsely distributed meteorological stations and the highly diverse urban features. In this study, we modelled the spatiotemporal pattern of UHI effect using the land use regression (LUR) approach in geographic information system with meteorological records of the recent 4years (2013-2016), sounding data and geographic predictors in Hong Kong...
October 30, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29090612/hermansky-pudlak-syndrome-subtype-5-hps-5-novel-mutation-in-a-65-year-old-with-oculocutaneous-hypopigmentation-and-mild-bleeding-diathesis-the-importance-of-recognizing-a-subtle-phenotype
#10
Juliana Perez Botero, Dong Chen, Julie A Majerus, Lea M Coon, Rong He, Deepti M Warad, Rajiv K Pruthi, William L Nichols
Hermansky-Pudlak syndrome (HPS) - characterized by the distinct clinical phenotypes of both oculocutaneous albinism and mild bleeding diathesis-is caused by mutations in genes that have crucial roles in the assembly of cellular organelles (skin melanosomes, platelet delta [dense] granules, lung lamellar bodies, and cytotoxic T-cell lymphocyte granules). Immunodeficiency, pulmonary fibrosis and granulomatous colitis are associated with some, but not all subtypes of HPS, with varying degrees of clinical severity...
November 1, 2017: Platelets
https://www.readbyqxmd.com/read/29080155/determination-of-polyamines-by-capillary-electrophoresis-using-salicylaldehyde-5-sulfonate-as-a-derivatizing-reagent
#11
Takashi Kaneta
Here we describe a protocol for the determination of polyamines using capillary electrophoresis with ultraviolet absorbance detection. Aliphatic polyamines were derivatized with salicylaldehyde-5-sulfonate (SAS) which formed Schiff base with amino groups, resulting in anionic derivatives. The derivatization of polyamines, including putrescine (PUT), cadaverine (CAD), spermidine (SPD), and spermine (SPM), was conducted in 10 mM HEPES buffer with pH 7.8 containing 5 mM SAS in a mixed solvent of water and ethanol...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29076156/association-between-serious-psychological-distress-and-nonparticipation-in-cancer-screening-and-the-modifying-effect-of-socioeconomic-status-analysis-of-anonymized-data-from-a-national-cross-sectional-survey-in-japan
#12
Masaki Fujiwara, Masatoshi Inagaki, Naoki Nakaya, Maiko Fujimori, Yuji Higuchi, Kyoko Kakeda, Yosuke Uchitomi, Norihito Yamada
BACKGROUND: It is unclear whether individuals who have serious psychological distress (SPD) are less likely to participate in screening tests for gastric cancer, lung cancer, and other types of cancer. Of the few studies that have examined the association between SPD and participation in cancer screening, none have reported modifying effects of educational, marital, or employment status. METHODS: The authors analyzed a national representative data set from the 2010 Comprehensive Survey of Living Conditions of Japan...
October 27, 2017: Cancer
https://www.readbyqxmd.com/read/29075277/the-alleviation-of-heat-damage-to-photosystem-ii-and-enzymatic-antioxidants-by-exogenous-spermidine-in-tall-fescue
#13
Liang Zhang, Tao Hu, Erick Amombo, Guangyang Wang, Yan Xie, Jinmin Fu
Tall fescue (Festuca arundinacea Schreb) is a typical cool-season grass that is widely used in turf and pasture. However, high temperature as an abiotic stress seriously affects its utilization. The objective of this study was to explore the effect of spermidine (Spd) on heat stress response of tall fescue. The samples were exposed to 22°C (normal condition) or 44°C (heat stress) for 4 h. The results showed that exogenous Spd partially improved the quality of tall fescue leaves under normal temperature conditions...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29072588/esprit-like-two-dimensional-doa-estimation-for-monostatic-mimo-radar-with-electromagnetic-vector-received-sensors-under-the-condition-of-gain-and-phase-uncertainties-and-mutual-coupling
#14
Dong Zhang, Yongshun Zhang, Guimei Zheng, Cunqian Feng, Jun Tang
In this paper, we focus on the problem of two-dimensional direction of arrival (2D-DOA) estimation for monostatic MIMO Radar with electromagnetic vector received sensors (MIMO-EMVSs) under the condition of gain and phase uncertainties (GPU) and mutual coupling (MC). GPU would spoil the invariance property of the EMVSs in MIMO-EMVSs, thus the effective ESPRIT algorithm unable to be used directly. Then we put forward a C-SPD ESPRIT-like algorithm. It estimates the 2D-DOA and polarization station angle (PSA) based on the instrumental sensors method (ISM)...
October 26, 2017: Sensors
https://www.readbyqxmd.com/read/29063977/highly-expressed-polyamine-oxidases-catalyze-polyamine-back-conversion-in-brachypodium-distachyon
#15
Yoshihiro Takahashi, Kaede Ono, Yuuta Akamine, Takuya Asano, Masatoshi Ezaki, Itsupei Mouri
To understand the polyamine (PA) catabolic pathways in Brachypodium distachyon, we focused on the flavin-containing polyamine oxidase enzymes (PAO), and characterized them at the molecular and biochemical levels. Five PAO isoforms were identified from database searches, and we named them BdPAO1 to BdPAO5. By gene expression analysis using above-ground tissues such as leaf, stem and inflorescence, it was revealed that BdPAO2 is the most abundant PAO gene in normal growth conditions, followed by BdPAO3 and BdPAO4...
October 24, 2017: Journal of Plant Research
https://www.readbyqxmd.com/read/29060578/a-closed-form-unsupervised-geometry-aware-dimensionality-reduction-method-in-the-riemannian-manifold-of-spd-matrices
#16
M Congedo, P L C Rodrigues, F Bouchard, A Barachant, C Jutten
Riemannian geometry has been found accurate and robust for classifying multidimensional data, for instance, in brain-computer interfaces based on electroencephalography. Given a number of data points on the manifold of symmetric positive-definite matrices, it is often of interest to embed these points in a manifold of smaller dimension. This is necessary for large dimensions in order to preserve accuracy and useful in general to speed up computations. Geometry-aware methods try to accomplish this task while respecting as much as possible the geometry of the original data points...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29047699/deconvolution-of-spectral-power-distribution-of-high-power-laser-diode-arrays
#17
Pu Zhang, Dae-Suk Kim, Bongtae Han
A novel method is proposed to predict the spectral power distributions (SPDs) of individual emitters in a high-power laser diode (LD) array. The proposed method deconvolutes the SPD of an LD array by taking into account the thermal cross-talk effect as well as the current competition effect. A complete analytical expression to deconvolute the SPD of an LD array is described. The expression contains four key parameters that are to be measured experimentally: (1) the normalized SPD of the central emitter, (2) the temperature coefficient of wavelength, (3) the current competition constant, and (4) the maximum power of the center emitter...
July 10, 2017: Applied Optics
https://www.readbyqxmd.com/read/29039320/pharmacokinetic-and-bioequivalence-studies-of-fast-dispersible-ketoprofen-tablets-in-healthy-volunteers
#18
Farya Zafar, Muhammad Harris Shoaib, Rabia Ismail Yousuf, Huma Ali, Rabia Bushra
In the present study the pharmacokinetic and bioequivalence parameter of Ketoprofen 100 mg fast dispersible tablets (test) were measured with marketed (reference) product. This study was accomplished following FDA guidance. A single dose, open labeled, cross over (two way), randomized study design was used to conduct investigation on 12 Pakistani healthy volunteers. At various time points blood samples (10mL) were drawn i.e. at 0.25, 0.5, 1, 1.5, 2, 3, 4, 8, 12 and 13hr. Plasma was then separated and ketoprofen concentrations were estimated by validated HPLC technique using LC 20A pump (Shimadzu Corp, Japan) and Spectrophotometric SPD-20Adetector (Shimadzu Corp, Japan)...
July 2017: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29029392/spermine-and-spermidine-reversed-age-related-cardiac-deterioration-in-rats
#19
Hao Zhang, Junying Wang, Lingxu Li, Nannan Chai, Yuhan Chen, Feixiang Wu, Weihua Zhang, Lina Wang, Sa Shi, Li Zhang, Shuling Bian, Changqing Xu, Ye Tian, Yajun Zhao
Aging is the most important risk factor for cardiovascular disease (CVD). Slowing or reversing the physiological impact of heart aging may reduce morbidity and mortality associated with age-related CVD. The polyamines, spermine (SP) and spermidine (SPD) are essential for cell growth, differentiation and apoptosis, and levels of both decline with age. To explore the effects of these polyamines on heart aging, we administered SP or SPD intraperitoneally to 22- to 24-month-old rats for 6 weeks. Both treatments reversed and inhibited age-related myocardial morphology alterations, myocardial fibrosis, and cell apoptosis...
September 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/29018465/transgenic-centipedegrass-eremochloa-ophiuroides-munro-hack-overexpressing-s-adenosylmethionine-decarboxylase-samdc-gene-for-improved-cold-tolerance-through-involvement-of-h2o2-and-no-signaling
#20
Jianhao Luo, Mingxi Liu, Chendong Zhang, Peipei Zhang, Jingjing Chen, Zhenfei Guo, Shaoyun Lu
Centipedegrass (Eremochloa ophiuroides [Munro] Hack.) is an important warm-season turfgrass species. Transgenic centipedgrass plants overexpressing S-adenosylmethionine decarboxylase from bermudagrass (CdSAMDC1) that was induced in response to cold were generated in this study. Higher levels of CdSAMDC1 transcript and sperimidine (Spd) and spermin (Spm) concentrations and enhanced freezing and chilling tolerance were observed in transgenic plants as compared with the wild type (WT). Transgenic plants had higher levels of polyamine oxidase (PAO) activity and H2O2 than WT, which were blocked by pretreatment with methylglyoxal bis (guanylhydrazone) or MGBG, inhibitor of SAMDC, indicating that the increased PAO and H2O2 were a result of expression of CdSAMDC1...
2017: Frontiers in Plant Science
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