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Ar d

Kara G Marson, Robert Marlin, Phong Pham, Stephanie E Cohen, Diane Jones, Marguerite Roemer, Philip J Peters, Barbara Haller, Christopher D Pilcher
BACKGROUND: Our medical center laboratory recently adapted its 24/7, two-hourly testing program to use an ARCHITECT-Multispot-viral load (AR-MS-VL) algorithm in place of a previous rapid test-immunofluorescence (RT-IF) algorithm. OBJECTIVES: We evaluated screening test performance, acute case detection, turnaround time and ability to resolve HIV status under the new algorithm. STUDY DESIGN: We considered consecutive HIV tests from January to November 2015...
April 7, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
Daipayan Guha, Naif M Alotaibi, Nhu Nguyen, Shaurya Gupta, Christopher McFaul, Victor X D Yang
Augmented reality (AR) superimposes computer-generated virtual objects onto the user's view of the real world. Among medical disciplines, neurosurgery has long been at the forefront of image-guided surgery, and it continues to push the frontiers of AR technology in the operating room. In this systematic review, we explore the history of AR in neurosurgery and examine the literature on current neurosurgical applications of AR. Significant challenges to surgical AR exist, including compounded sources of registration error, impaired depth perception, visual and tactile temporal asynchrony, and operator inattentional blindness...
April 24, 2017: Canadian Journal of Neurological Sciences. le Journal Canadien des Sciences Neurologiques
Cory Waltz, Mauricio Ayllon, Tim Becker, Lee Bernstein, Ka-Ngo Leung, Leo Kirsch, Paul Renne, Karl Van Bibber
A facility based on a next-generation, high-flux D-D neutron generator has been commissioned and it is now operational at the University of California, Berkeley. The current generator designed for (40)Ar/(39)Ar dating of geological materials produces nearly monoenergetic 2.45MeV neutrons at outputs of 10(8)n/s. The narrow energy range is advantageous relative to the (235)U fission spectrum neutrons due to (i) reduced (39)Ar recoil energy, (ii) minimized production of interfering argon isotopes from K, Ca, and Cl, and (iii) reduced total activity for radiological safety and waste generation...
April 13, 2017: Applied Radiation and Isotopes
Jacob Kach, Tiha M Long, Phillip Selman, Eva Y Tonsing-Carter, Maria A Bacalao, Ricardo R Lastra, Larischa de Wet, Shane Comiskey, Marc Gillard, Calvin VanOpstall, Diana C West, Wen-Ching Chan, Donald Vander Griend, Suzanne D Conzen, Russell Z Szmulewitz
Increased glucocorticoid receptor (GR) expression and activity following androgen blockade can contribute to castration-resistant prostate cancer (CRPC) progression. Therefore, we hypothesized that GR antagonism will have therapeutic benefit in CRPC. However, the FDA-approved nonselective, steroidal GR antagonist, mifepristone, lacks GR specificity, reducing its therapeutic potential. Here we report that two novel non-steroidal and highly selective GR modulators (SGRMs), CORT118335 and CORT108297, have the ability to block GR activity in prostate cancer (PC) and slow CRPC progression...
April 20, 2017: Molecular Cancer Therapeutics
E Kiarie, M C Walsh, L F Romero, S Arent, V Ravindran
The effects of adaptation (AD) to xylanase-supplemented diets on nutrient and fiber utilization in 21-d-old broilers were investigated. Six treatments, arranged in two levels of AD (starting at d 0 or d 14 of age) and three levels of xylanase (0 or 2,500 or 5,000 xylanase units/kg feed) were used. All diets had 500 phytase U/kg and 0.3% TiO2 as indigestible marker. A total of 384 d old male broiler (Ross 308) chicks were divided into two groups. The first group was assigned on weight basis to 24 cages (8 chicks per cage) and randomly allocated to the diets from d 0...
April 17, 2017: Poultry Science
Giovanni Grandi, Michael D Mueller, Nick A Bersinger, Fabio Facchinetti, Brett D McKinnon
Endometriosis is an inflammatory disease and nuclear receptors play a crucial role in mediating the inflammatory response. In endometrial stromal cells (ESC), nuclear receptors expression can be influenced by the local environment. Progestins are first-line, on-label treatments of endometriosis that may have direct effects on endometriotic lesions through these nuclear receptors. Therefore, we investigated whether there was an association between nuclear receptors expression and the influence of progestins on inflammatory cytokines production in a preliminary, in vitro study with primary cultures...
April 17, 2017: Gynecological Endocrinology
E Breininger, D Dubois, V E Pereyra, P C Rodriguez, M M Satorre, P D Cetica
The aim of this work was to determine the enzymatic activity of phosphofructokinase (PFK), malate dehydrogenase (MDH) and isocitrate dehydrogenase (IDH) in boar spermatozoa and study their participation in bicarbonate-induced capacitation and follicular fluid-induced acrosome reaction. Enzymatic activity of these enzymes was determined spectrophotometrically in extracts of boar spermatozoa. Sperm suspensions were incubated in the presence of bicarbonate (40 mM), a well-known capacitation inducer, or follicular fluid (30%), as an acrosome reaction inducer, and different concentrations of oxoglutarate, oxalomalate and hydroxymalonate, inhibitors of PFK, IDH and MDH, respectively...
April 10, 2017: Reproduction in Domestic Animals, Zuchthygiene
S J Warden, A M Weatherholt, A S Gudeman, D C Mitchell, W R Thompson, R K Fuchs
Physical activity benefits the skeleton, but there is contrasting evidence regarding whether benefits differ at different stages of growth. The current study demonstrates that physical activity should be encouraged at the earliest age possible and be continued into early adulthood to gain most skeletal benefits. INTRODUCTION: The current study explored physical activity-induced bone adaptation at different stages of somatic maturity by comparing side-to-side differences in midshaft humerus properties between male throwing athletes and controls...
April 10, 2017: Osteoporosis International
Zener Sukra Lie, Marincan Pardede, Eric Jobiliong, Hery Suyanto, Davy Putra Kurniawan, Rinda Hedwig, Muliadi Ramli, Ali Khumaeni, Tjung Jie Lie, Koo Hendrik Kurniawan, Kiichiro Kagawa, May On Tjia
An experimental study is conducted in search of the much needed experimental method for practical and minimally destructive analysis of hydrogen (H) and deuterium (D) in a nuclear power plant. For this purpose, a picosecond (ps) Nd:YAG laser is employed and operated with 300-500 μJ output energies in a variety of ambient gases at various gas pressures. The sample chamber used is specially designed small quartz tube with an open end that can be tightly fitted to the sample surface. It is found that ambient Ar gas at reduced pressure of around 0...
April 17, 2017: Analytical Chemistry
Paul Ratner, Charles P Andrews, Frank C Hampel, Bruce Martin, Dale E Mohar, Denis Bourrelly, Parisa Danaietash, Sara Mangialaio, Jasper Dingemanse, Abdel Hmissi, Jay van Bavel
BACKGROUND: Antagonism of chemoattractant receptor-homologous molecule on T-helper type-2 cells (CRTH2), a G-protein coupled receptor for prostaglandin D2, could be beneficial for treating allergic disorders. We present findings on the efficacy and safety/tolerability of a CRTH2 antagonist (setipiprant) in participants with seasonal allergic rhinitis (AR) in a real-life setting over 2 weeks. METHODS: A Phase 2 trial and a Phase 3 trial were conducted at seven centers in Texas, USA during the Mountain Cedar pollen season...
2017: Allergy, Asthma, and Clinical Immunology
Naim M Obeid, Lukas Klemmer, Daniel Maus, Michael Zimmer, Jonathan Jeck, Iulia Bejan, Andrew J P White, Volker Huch, Gregor Jung, David Scheschkewitz
A series of aryl disilenes Tip2Si[double bond, length as m-dash]Si(Tip)Ar (2a-c) and para-arylene bridged tetrasiladienes, Tip2Si[double bond, length as m-dash]Si(Tip)-LU-Si(Tip)[double bond, length as m-dash]SiTip2 (3a-d) are synthesized by the transfer of the Tip2Si[double bond, length as m-dash]SiTip unit to aryl halides and dihalides by nucleophilic disilenides Tip2Si[double bond, length as m-dash]SiTipLi (Tip = 2,4,6-iPr3C6H2, Ar = aryl substituent, LU = para-arylene linking unit). The scope of the nucleophilic Si[double bond, length as m-dash]Si transfer reaction is demonstrated to also include substrates of considerable steric bulk such as mesityl or duryl halides Ar-X (Ar = Mes = 2,4,6-Me3C6H2; Ar = Dur = 2,3,5,6-Me4C6H, X = Br or I)...
April 7, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
Vibha C A Desai, Yann Ferrand, Teresa M Cavanaugh, Christina M L Kelton, J Jaime Caro, Jens Goebel, Pamela C Heaton
BACKGROUND: Corticosteroids used as immunosuppressants to prevent acute rejection (AR) and graft loss (GL) following kidney transplantation are associated with serious cardiovascular and other adverse events. Evidence from short-term randomized controlled trials suggests that many patients on a tacrolimus-based immunosuppressant regimen can withdraw from steroids without increased AR or GL risk. OBJECTIVES: To measure the long-term tradeoff between GL and adverse events for a heterogeneous-risk population and determine the optimal timing of steroid withdrawal...
April 1, 2017: Medical Decision Making: An International Journal of the Society for Medical Decision Making
Yiwen Wang, Qiushi Huang, Qiang Yi, Igor V Kozhevnikov, Runze Qi, Mingwu Wen, Philippe Jonnard, Jinshuai Zhang, Angelo Giglia, Zhong Zhang, Zhanshan Wang
Reactive sputtering with a mixture of argon and nitrogen (N<sub>2</sub> partial pressure of 4%, 8%, and 15%) as the working gas is used to develop the high reflectance Pd/B<sub>4</sub>C multilayers for soft X-ray region application. Compared to the pure Ar fabricated sample, the interface roughness of the nitridated multilayer is slightly increased while the compressive stress is essentially relaxed from -623 MPa (pure Ar) to -85 MPa (15% N<sub>2</sub>). A maximum reflectance of 32% is measured at the wavelength of 9...
April 3, 2017: Optics Express
Patricio A Gallardo, Brian J Koopman, Nicholas F Cothard, Sarah Marie M Bruno, German Cortes-Medellin, Galen Marchetti, Kevin H Miller, Brenna Mockler, Michael D Niemack, Gordon Stacey, Edward J Wollack
Refractive optical elements are widely used in millimeter and sub-millimeter (sub-mm) astronomical telescopes. High-resistivity silicon is an excellent material for dielectric lenses given its low loss tangent, high thermal conductivity, and high index of refraction. The high index of refraction of silicon causes a large Fresnel reflectance at the vacuum-silicon interface (up to 30%), which can be reduced with an anti-reflection (AR) coating. In this work, we report techniques for efficiently AR coating silicon at sub-mm wavelengths using deep reactive ion etching (DRIE) and bonding the coated silicon to another silicon optic...
April 1, 2017: Applied Optics
Charlton D Lewis, David Eugene Weeks
Scattering matrix elements of the inelastic fine structure transition M((2)P1/2) + Ng ↔ M((2)P3/2) + Ng are computed using the Channel Packet Method (CPM) for alkali-metal atoms M = K, Rb, Cs, as they collide with noble-gas atoms Ng = He, Ne, Ar. The calculations are performed within the block Born-Oppenheimer approximation where excited state VA(2)Π1/2(R), VA(2)Πj(R), and VB(2)Σ(+)1/2(R) adiabatic potential energy surfaces are used together with a Hund's case (c) basis to construct a 6x6 diabatic representation of the electronic Hamiltonian...
April 3, 2017: Journal of Physical Chemistry. A
Lynn N Thomas, Emily R Chedrawe, Penelope J Barnes, Catherine K L Too
PURPOSE: Carboxypeptidase-D (CPD) cleaves C-terminal arginine (Arg) to produce nitric oxide (NO). Upregulation of CPD and NO by 17β-estradiol, prolactin (PRL), and androgen increases survival of human breast cancer (BCa) cells in vitro. To demonstrate similar events in vivo, CPD, nitrotyrosine (NT, hallmark of NO action), androgen receptor (AR), prolactin receptor (PRLR), and phospho-Stat5a (for activated PRLR) levels were evaluated in benign and malignant human breast tissues, and correlated with cell proliferation (Ki67) and BCa progression (Cullin-3) biomarkers...
March 31, 2017: Breast Cancer Research and Treatment
R Gopi, N Ramanathan, K Sundararajan
Blue-shifted hydrogen-bonded complexes of fluoroform (CHF3) with benzene (C6H6) and acetylene (C2H2) have been investigated using matrix isolation infrared spectroscopy and ab initio computations. For CHF3-C6H6 complex, calculations performed at the B3LYP and MP2 levels of theory using 6-311++G (d,p) and aug-cc-pVDZ basis sets discerned two minima corresponding to a 1:1 hydrogen-bonded complex. The global minimum correlated to a structure, where the interaction is between the hydrogen of CHF3 and the π-electrons of C6H6 and a weak local minimum was stabilized through H…F interaction...
March 21, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
Masashi Tsuge, Yuan-Pern Lee
We report infrared (IR) spectra of HSCS(+), c-HSCS, HCS2(-), and other species produced on electron bombardment of a mixture of CS2 and para-hydrogen (p-H2) during deposition at 3.2 K. After maintenance of the deposited matrix in darkness for 12 h, the intensities of the absorption lines of HSCS(+) at 2477.2 (ν1), 1525.6 (ν2), and 919.6 cm(-1) (ν3) decreased through neutralization of HSCS(+) with trapped electrons. During this period, the intensities of the lines of HCS2(-) at 2875.7 (ν1), 1249.9 (ν5), 1003...
March 27, 2017: Physical Chemistry Chemical Physics: PCCP
D R Culqui, C Linares, C Ortiz, R Carmona, J Díaz
INTRODUCTION: There are scarce studies of time series that analysed the short-term association between emergency hospital admissions due to Alzheimer's disease (AD) and environmental factors. The objective is to analyse the effect of heat waves, noise and air pollutants on urgent hospital admissions due to AD in Madrid. METHODS: Longitudinal ecological time series study was performed. The dependent variable was the emergency AD hospital admissions occurred in Madrid during the period 2001-2009...
March 22, 2017: Science of the Total Environment
Carla Marini, Katia Hardies, Tiziana Pisano, Patrick May, Sarah Weckhuysen, Elena Cellini, Arvid Suls, Davide Mei, Rudi Balling, Peter D Jonghe, Ingo Helbig, Domenico Garozzo, Renzo Guerrini
We describe the clinical and whole genome sequencing (WGS) study of a non-consanguineous Italian family in which two siblings, a boy and a girl, manifesting a severe epileptic encephalopathy (EE) with skeletal abnormalities, carried novel SLC35A3 compound heterozygous mutations. Both siblings exhibited infantile spasms, associated with focal, and tonic vibratory seizures from early infancy. EEG recordings showed a suppression-burst (SB) pattern and multifocal paroxysmal activity in both. In addition both had quadriplegia, acquired microcephaly, and severe intellectual disability...
April 2017: American Journal of Medical Genetics. Part A
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