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https://www.readbyqxmd.com/read/28447481/a-correction-method-for-attenuated-total-reflection-far-ultraviolet-spectra-via-the-use-of-charge-transfer-to-solvent-band-intensities-of-iodide-in-the-ultraviolet-region
#1
Akifumi Ikehata, Takeyoshi Goto, Yusuke Morisawa
Attenuated total reflection (ATR) spectra, which are often used in IR analysis, can be transformed into extinction and refraction spectra by Kramers-Kronig transformation (KKT) with Fresnel equations. However, it is often difficult to obtain correct optical indices due to the inherent instrumental functions. This paper proposes a simple practical method for correction of KKT with two parameters, which include all the effects of the instrumental function. In order to obtain the parameters of the instrumental function, absorption ratios of charge transfer to solvent (CTTS) transitions of aqueous iodide ions observed at 195 nm and 230 nm were used as a standard...
January 1, 2017: Applied Spectroscopy
https://www.readbyqxmd.com/read/28436102/nutrition-in-adolescents-physiology-metabolism-and-nutritional-needs
#2
REVIEW
Jai K Das, Rehana A Salam, Kent L Thornburg, Andrew M Prentice, Susan Campisi, Zohra S Lassi, Berthold Koletzko, Zulfiqar A Bhutta
Adolescence is the period of development that begins at puberty and ends in early adulthood. Most commonly, adolescence is divided into three developmental periods: early adolescence (10-14 years of age), late adolescence (15-19 years of age), and young adulthood (20-24 years of age). Adolescence is marked by physical and sexual maturation, social and economic independence, development of identity, acquisition of skills needed to carry out adult relationships and roles, and the capacity for abstract reasoning...
April 2017: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/28433247/outpatient-laparoscopic-appendectomy-feasible-in-a-public-county-hospital
#3
David R Rosen, Kenji Inaba, Paul J Oh, Adam C Gutierrez, Aaron M Strumwasser, Subarna Biswas, Melody Cala, Glenn T Ault
BACKGROUND: Outpatient laparoscopic appendectomy is being used increasingly as a treatment option for acute, uncomplicated appendicitis. This was a prospective validation study in a large, urban, public safety-net hospital. STUDY DESIGN: From 2014 to 2016, all patients undergoing laparoscopic appendectomy for acute, uncomplicated appendicitis were enrolled in a prospective observational trial. Standard baseline perioperative practice (control group) was documented for 1 year...
March 13, 2017: Journal of the American College of Surgeons
https://www.readbyqxmd.com/read/28432152/exposure-to-seawater-increases-intestinal-motility-in-euryhaline-rainbow-trout-oncorhynchus-mykiss
#4
Jeroen Brijs, Grant W Hennig, Albin Gräns, Esmée Dekens, Michael Axelsson, Catharina Olsson
Upon exposure to seawater, euryhaline teleosts need to imbibe and desalinate seawater to allow for intestinal ion and water absorption, as this is essential for maintaining osmotic homeostasis. Despite the potential benefits of increased mixing and transport of imbibed water for increasing the efficiency of absorptive processes, the effect of water salinity on intestinal motility in teleosts remains unexplored. By qualitatively and quantitatively describing in vivo intestinal motility of euryhaline rainbow trout (Oncorhynchus mykiss), this study demonstrates that in freshwater, the most common motility pattern consisted of clusters of rhythmic, posteriorly propagating contractions that lasted ∼1-2 minutes followed by a period of quiescence lasting ∼4-5 minutes...
April 21, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28431572/hepatitis-c-virus-ns4b-protein-induces-epithelial-mesenchymal-transition-by-upregulation-of-snail
#5
Bicheng Hu, Shenggao Xie, Yuqian Hu, Wen Chen, Xiaofan Chen, Yi Zheng, Xinxing Wu
BACKGROUND: Chronic hepatitis C virus (HCV) infection is an important cause of hepatocellular carcinoma (HCC). Epithelial to mesenchymal transition (EMT) is a key process associated with tumor metastasis and poor prognosis. HCV infection, HCV core and NS5A protein could induce EMT process, but the role of NS4B on EMT remains poorly understood. METHODS: We overexpressed HCV NS4B protein in HepG2 cells or Huh7.5.1 cells infected by HCVcc, the E-cadherin expression, N-cadherin expression and the EMT-associated transcriptional factor Snail were determined...
April 21, 2017: Virology Journal
https://www.readbyqxmd.com/read/28430270/atomistic-non-adiabatic-dynamics-of-the-lh2-complex-with-a-gpu-accelerated-ab-initio-exciton-model
#6
Aaron Sisto, Clem Stross, Marc W van der Kamp, Michael O'Connor, Simon McIntosh-Smith, Graham T Johnson, Edward G Hohenstein, Fred R Manby, David R Glowacki, Todd J Martinez
We recently outlined an efficient multi-tiered parallel ab initio excitonic framework that utilizes time dependent density functional theory (TDDFT) to calculate ground and excited state energies and gradients of large supramolecular complexes in atomistic detail - enabling us to undertake non-adiabatic simulations which explicitly account for the coupled anharmonic vibrational motion of all the constituent atoms in a supramolecular system. Here we apply that framework to the 27 coupled bacterio-chlorophyll-a chromophores which make up the LH2 complex, using it to compute an on-the-fly nonadiabatic surface-hopping (SH) trajectory of electronically excited LH2...
April 21, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28424929/assessment-of-tddft-and-cis-based-methods-for-calculating-fluorescence-spectra-of-dibenzoylmethanato-boron-difluoride-exciplexes-with-aromatic-hydrocarbons
#7
A A Safonov, A A Bagaturyants, V A Sazhnikov
The applicabilities of various CIS- and TDDFT-based procedures to the calculation of the fluorescence spectra of DBMBF2 exciplexes with aromatic hydrocarbons are analyzed. It is shown that a reasonable agreement between the calculated and experimental fluorescence spectra is obtained when a combined procedure is used. In this combined procedure, the geometries of the exciplexes are optimized beforehand using the CIS method with an empirical dispersion correction, while the exciplex transition energies are calculated at the optimized geometries using the CIS(D) method or the TDDFT approach with double-hybrid B2PLYP and mPW2PLYP functionals...
May 2017: Journal of Molecular Modeling
https://www.readbyqxmd.com/read/28422183/enhanced-superconductivity-accompanying-a-lifshitz-transition-in-electron-doped-fese-monolayer
#8
X Shi, Z-Q Han, X-L Peng, P Richard, T Qian, X-X Wu, M-W Qiu, S C Wang, J P Hu, Y-J Sun, H Ding
The origin of enhanced superconductivity over 50 K in the recently discovered FeSe monolayer films grown on SrTiO3 (STO), as compared to 8 K in bulk FeSe, is intensely debated. As with the ferrochalcogenides AxFe2-ySe2 and potassium-doped FeSe, which also have a relatively high-superconducting critical temperature (Tc), the Fermi surface (FS) of the FeSe/STO monolayer films is free of hole-like FS, suggesting that a Lifshitz transition by which these hole FSs vanish may help increasing Tc. However, the fundamental reasons explaining this increase of Tc remain unclear...
April 19, 2017: Nature Communications
https://www.readbyqxmd.com/read/28418789/transitions-and-motivations-for-substance-misuse-in-prison-inmates-with-adhd-and-conduct-disorder-validation-of-a-new-instrument
#9
Susan Young, Rafael A González, Kim Wolff, Laura Mutch, Isabella Malet-Lambert, Gisli H Gudjonsson
OBJECTIVE: There is a reasonable theoretical base for understanding the possible causes and motivations behind substance misuse and its dependency. There is a need for a reliable and valid measure that delineates the markers of substance use from its initiation and identifies different motivations for drug use transitioning, maintenance, and dependency. We addressed this gap in the United Kingdom by examining and validating the Substance Transitions in Addiction Rating Scale (STARS). METHODS: For this review, 390 male prisoners were screened for conduct disorder and assessed with a clinical diagnostic interview for attention deficit/hyperactivity disorder (ADHD)...
April 18, 2017: Journal of Dual Diagnosis
https://www.readbyqxmd.com/read/28415159/comparison-of-unsatisfactory-samples-from-conventional-smear-versus-liquid-based-cytology-in-uterine-cervical-cancer-screening-test
#10
Hoiseon Jeong, Sung Ran Hong, Seoung-Wan Chae, So-Young Jin, Hye Kyoung Yoon, Juhie Lee, Eun Kyung Kim, Sook Tai Ha, Sung Nam Kim, Eun-Jung Park, Jong Jae Jung, Sun Hee Sung, Sung-Chul Lim
Background: Cervical cytology for uterine cervical cancer screening has transitioned from conventional smear (CS) to liquid-based cytology (LBC), which has many advantages. The aim of this study was to compare the proportion of unsatisfactory specimens from CS versus LBC at multiple institutions including general hospitals and commercial laboratories. Materials and Methods: Each participating institution provided a minimum of 500 Papanicolaou (Pap) test results for analysis...
April 17, 2017: Journal of Pathology and Translational Medicine
https://www.readbyqxmd.com/read/28412639/aggregation-of-thermoresponsive-core-shell-nanoparticles-influence-of-particle-concentration-dispersant-molecular-weight-and-grafting
#11
Steffen Kurzhals, Noga Gal, Ronald Zirbs, Erik Reimhult
Thermoresponsive core-shell nanoparticles represent an interesting class of materials with a triggered solubility transition. However, depending on the system, their aggregation behavior above the lower critical solution temperature (LCST) is ambiguous and obviously linked to a multitude of parameters. The induced aggregation of a set of well characterized poly(N-isopropylacrylamide)-nitrodopamine grafted superparamagnetic iron oxide nanoparticles is investigated with respect to the PNIPAM molecular weight (5-30kDa) and concentration using differential scanning calorimetry and temperature-cycled dynamic light scattering measurements...
April 5, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28409284/development-prevention-and-treatment-of-feeding-tube-dependency
#12
REVIEW
Hilde Krom, J Peter de Winter, Angelika Kindermann
Enteral nutrition is effective in ensuring nutritional requirements and growth. However, when tube feeding lasts for a longer period, it can lead to tube dependency in the absence of medical reasons for continuation of tube feeding. Tube-dependent children are unable or refuse to start oral activities and they lack oral skills. Tube dependency has health-, psychosocial-, and economy-related consequences. Therefore, the transition to oral feeding is of great importance. However, this transition can be very difficult and needs a multidisciplinary approach...
April 13, 2017: European Journal of Pediatrics
https://www.readbyqxmd.com/read/28405717/-differential-indications-for-ileoanal-pouch-anastomosis-ulcerative-colitis-familial-adenomatous-polyposis-synchronous-colorectal-cancer-crohn-s-disease-constipation
#13
A Fürst
Ileoanal pouch anastomosis is the procedure of choice for patients with drug refractory ulcerative colitis, indeterminate colitis and familial adenomatous polyposis (FAP). In selected patient groups this procedure is a treatment option for patients with Crohn's disease, hereditary nonpolyposis colorectal cancer (HNPCC), synchronous colorectal cancer and for severe colorectal constipation refractory to conservative drug treatment. The pouch procedure provides the opportunity to avoid a permanent ileostomy. The majority of surgeons prefer the ileal J‑pouch as the construction is the easiest to perform and complications and dysfunction rates are low...
April 12, 2017: Der Chirurg; Zeitschrift Für Alle Gebiete der Operativen Medizen
https://www.readbyqxmd.com/read/28399352/socioeconomic-characteristics-health-risk-factors-and-alcohol-consumption-among-the-homeless-in-north-eastern-part-of-poland
#14
Jerzy Romaszko, Robert Kuchta, Cezary Opalach, Anna Bertrand-Bucińska, Anna Maria Romaszko, Beata Giergielewicz-Januszko, Adam Buciński
BACKGROUND: Homelessness is a form of social pathology, which is for various reasons undesirable and as far as possible limited by efforts such as programmes that assist in transitioning out of homelessness. Because, as time passes, the homeless population undergoes both quantitative and qualitative changes, the process of developing these programmes requires up-to-date information on the extent and profile of this phenomenon that takes into account the characteristics of a given country...
March 2017: Central European Journal of Public Health
https://www.readbyqxmd.com/read/28393939/investigating-the-optical-properties-of-boimpy-dyes-using-ab-initio-tools
#15
Boris Le Guennic, Giovanni Scalmani, Michael J Frisch, Adèle D Laurent, Denis Jacquemin
Using a computational approach combining Time-Dependent Density Functional Theory (TD-DFT) and second-order Coupled Cluster (CC2) approaches, we investigate the spectral properties of a large panel of BOIMPY dyes. BOIMPY derivatives constitute a new class of fluorophores that appeared only very recently [Angew. Chem. Int. Ed., 2016, 55, 13340-13344] and display intriguing properties. First, we show that theory is able to reproduce experimental 0-0 energies with reasonable accuracy, and more importantly excellent consistency (R = 0...
April 19, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28391821/predicting-epileptic-seizures-from-scalp-eeg-based-on-attractor-state-analysis
#16
Hyunho Chu, Chun Kee Chung, Woorim Jeong, Kwang-Hyun Cho
BACKGROUND AND OBJECTIVE: Epilepsy is the second most common disease of the brain. Epilepsy makes it difficult for patients to live a normal life because it is difficult to predict when seizures will occur. In this regard, if seizures could be predicted a reasonable period of time before their occurrence, epilepsy patients could take precautions against them and improve their safety and quality of life. In this paper, we investigate a novel seizure precursor based on attractor state analysis for seizure prediction...
May 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/28387899/a-correlation-study-between-gene-polymorphism-of-th-cell-expressed-chemokine-receptor-cxcr3-and-its-ligand-levels-with-hcv-infection-prognosis
#17
Y Lu, L-Y Lin, J-G Tan, H-P Deng, X-H Li, Z Zhang, Y Li, Z Zhou, X Xu, X Xie, S-J Mei
OBJECTIVE: Chemokine receptor and its ligand participate in viral immunity and HCV infection, which are important inflammatory mediators. The current study showed the different roles of Th cell secreted chemokines CXCR3, CCR5 and CCR6 in chronic liver inflammation after HCV infection. As one important chemokine receptor, the role of polypeptide property and ligand level in HCV prognosis is still unclear. This study aims to investigate gene polymorphism of chemokine genes and ligand level, and their correlation with patient liver function, to provide evidence for HCV prognosis and chronic transition mechanism...
March 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28379779/a-procedure-for-deriving-formulas-to-convert-transition-rates-to-probabilities-for-multi-state-markov-models
#18
Edmund Jones, David Epstein, Leticia García-Mochón
For health-economic analyses that use multi-state Markov models, it is often necessary to convert from transition rates to transition probabilities, and for probabilistic sensitivity analysis and other purposes it is useful to have explicit algebraic formulas for these conversions, to avoid having to resort to numerical methods. However, if there are four or more states then the formulas can be extremely complicated. These calculations can be made using packages such as R, but many analysts and other stakeholders still prefer to use spreadsheets for these decision models...
March 1, 2017: Medical Decision Making: An International Journal of the Society for Medical Decision Making
https://www.readbyqxmd.com/read/28379710/exotic-property-of-azobenzenesulfonic-photoalignment-material-based-on-relative-humidity
#19
Yue Shi, Chenxiang Zhao, Jacob Yeuk-Lung Ho, Valery V Vashchenko, Abhishek Kumar Srivastava, Vladimir G Chigrinov, Hoi-Sing Kwok, Feng Song, Dan Luo
Azobenzene photoalignment materials are highly effective for liquid crystal alignment with high sensitivity and rewritability. A strong relationship between relative humidity and the alignment quality of a thin layer of azobenzenesulfonic dye has been investigated, where the photoinduced phase retardation, order parameter, and anchoring strength of the alignment layer are influenced dramatically by relative humidity. Our results provide fabrication guidance for the photoalignment process in both display and photonic applications...
April 12, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28379002/nanoparticle-nucleation-is-termolecular-in-metal-and-involves-hydrogen-evidence-for-a-kinetically-effective-nucleus-of-three-ir3h2x%C3%A2-p2w15nb3o62-6-in-ir-0-n-nanoparticle-formation-from-1-5-cod-ir-i-%C3%A2-p2w15nb3o62-8-plus-dihydrogen
#20
Saim Özkar, Richard G Finke
The nucleation process yielding Ir(0)∼300 nanoparticles from (Bu4N)5Na3[(1,5-COD)Ir·P2W15Nb3O62] (abbreviated hereafter as (COD)Ir·POM(8-), where POM(9-) = the polyoxometalate, P2W15Nb3O62(9-)) under H2 is investigated to learn the true molecularity, and hence the associated kinetically effective nucleus (KEN), for nanoparticle formation for the first time. Recent work with this prototype transition-metal nanoparticle formation system ( J. Am. Chem. Soc. 2014 , 136 , 17601 - 17615 ) revealed that nucleation in this system is an apparent second-order in the precatalyst, A = (COD)Ir·POM(8-), not the higher order implied by classic nucleation theory and its nA ⇌ An, "critical nucleus", An concept...
April 5, 2017: Journal of the American Chemical Society
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