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https://www.readbyqxmd.com/read/28429933/remarkably-enhancing-green-excitation-efficiency-for-solar-energy-utilization-red-phosphors-ba2zns3-eu-2-x-co-doped-halide-ions-x-cl-br-i
#1
Tingting Luo, Yun Du, Zhongxian Qiu, Yanmei Li, Xiaofang Wang, Wenli Zhou, Jilin Zhang, Liping Yu, Shixun Lian
Eu(2+)-activated Ba2ZnS3 has been reported as a red phosphor with a broad emission band peaking at 650 nm under blue excitation for white-LED. In this study, Ba2ZnS3:Eu(2+), X(-) (X = F, Cl, Br, I) phosphors doped with halide ions were prepared by traditional high-temperature solid-state reaction. Phase identification of powders was performed by X-ray powder diffraction analysis, confirming the existence of single-phase Ba2ZnS3 crystals without dopant. The corresponding excitation spectra showed an additional broad band in the green region peaking at 550 nm when the phosphor was halogenated except by the smallest F(-)...
April 21, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28422904/a-comparison-of-prognosis-calculators-for-geriatric-trauma-a-p-a-l-li-a-t-e-consortium-study
#2
Tarik D Madni, Akpofure Peter Ekeh, Scott C Brakenridge, Karen J Brasel, Bellal Joseph, Kenji Inaba, Brandon R Bruns, Jeffrey D Kerby, Joseph Cuschieri, M Jane Mohler, Paul A Nakonezny, Audra Clark, Jonathan Imran, Steven E Wolf, M Elizabeth Paulk, Ramona L Rhodes, Herb A Phelan
BACKGROUND: The nine-center PALLIATE consortium has validated the Geriatric Trauma Outcome Score (GTOS) as a prognosis calculator for injured elders. We compared GTOS' performance to that of the Trauma Injury Severity Score (TRISS) in a multicenter sample. METHODS: Three PALLIATE centers not submitting subjects to the GTOS validation study identified subjects aged 65 to 102 yrs admitted from 2000-2013. GTOS was specified using the formula [GTOS = age + (ISS x 2...
April 18, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28400735/a-novel-stopped-flow-assay-for-quantitating-carbonic-anhydrase-activity-and-assessing-red-blood-cell-hemolysis
#3
Pan Zhao, R Ryan Geyer, Walter F Boron
We report a novel carbonic-anhydrase (CA) assay and its use for quantitating red-blood-cell (RBC) lysis during stopped-flow (SF) experiments. We combine two saline solutions, one containing HEPES/pH 7.03 and the other, ~1% CO2/44 mM [Formula: see text]/pH 8.41, to generate an out-of-equilibrium CO2/[Formula: see text] solution containing ~0.5% CO2/22 [Formula: see text]/pH ~7.25 (10°C) in the SF reaction cell. CA catalyzes relaxation of extracellular pH to ~7.50: [Formula: see text] + H(+) → CO2 + H2O. Proof-of-concept studies (no intact RBCs) show that the pH-relaxation rate constant (kΔpH)-measured via pyranine fluorescence-rises linearly with increases in [bovine CAII] or [murine-RBC lysate]...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28387168/numerical-simulation-of-motion-and-deformation-of-healthy-and-sick-red-blood-cell-through-a-constricted-vessel-using-hybrid-lattice-boltzmann-immersed-boundary-method
#4
Amir Hassanzadeh, Nader Pourmahmoud, Abdolrahman Dadvand
In the present article, hybrid lattice Boltzmann-immersed boundary method is utilized to simulate two-dimensional incompressible viscous flow involving flexible immersed red blood cell (RBC) in a microchannel. The main focus of the present research is to study motion and deformation of both healthy and sick RBCs in a vessel with different sizes of stenosis. The presented computational results consent reasonably well with the available data in the literature. Two different channels i.e. a simple and a constricted channel are investigated in the present manuscript...
May 2017: Computer Methods in Biomechanics and Biomedical Engineering
https://www.readbyqxmd.com/read/28321202/emotionality-of-colors-an-implicit-link-between-red-and-dominance
#5
Stijn V Mentzel, Linda Schücker, Norbert Hagemann, Bernd Strauss
The color red has been shown to alter emotions, physiology, psychology, and behavior. Research has suggested that these alterations could possibly be due to a link between red and perceived dominance. In this study we examined if the color red is implicitly associated to the concept of dominance. In addition, we similarly hypothesized that blue is implicitly linked to rest. A modified Stroop word evaluation task was used in which 30 participants (23.07 ± 4.42 years) were asked to classify words shown in either red, blue, or gray (control condition), as being either dominant- or rest-related...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28300244/a-luminescent-polyoxoniobate-lanthanide-derivative-eu3-h2o-9-nb48o138-h2o-6-27-%C3%A2
#6
Shumin Chen, Pengtao Ma, Huihui Luo, Yangyang Wang, Jingyang Niu, Jingping Wang
A europium-containing isopolyoxoniobate with the formula (CN3H6)7K3H17{Eu3(H2O)9Nb48O138(H2O)6}·40H2O is synthesized under the protection of citric acid. ESI-MS spectra show that the polyoxoanion structural unit {Eu3(H2O)9[Nb48O138(H2O)6]}(27-) is intact in aqueous solution. Moreover, its solid-state luminescence displays a red emission with the long lifetime of 258 μs.
March 16, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28298542/lipid-emulsion-added-to-a-liquid-high-carbohydrate-diet-and-voluntary-running-exercise-reduce-lipogenesis-and-ameliorate-early-stage-hepatic-steatosis-in-mice
#7
Kuan-Hsun Huang, Lei Hao, Philip B Smith, Connie J Rogers, Andrew D Patterson, A Catharine Ross
Background: The use of parenteral nutrition formulas is often associated with the development of hepatic steatosis. We have shown previously that the addition of a lipid emulsion (LE) rich in n-6 (ω-6) fatty acids (FAs) ameliorated triglyceride (TG) accumulation in the livers of nonobese mice fed a high-carbohydrate diet (HCD) for 5 wk. However, it remains unclear how rapidly this condition develops and whether it can be prevented by LE with or without a running wheel for voluntary exercise (Exe).Objective: We investigated in an 8-d study whether mice develop steatosis and whether the administration of LE with or without Exe reduces the concentration of total FAs and prevents an increase in the expression of genes in the liver associated with lipogenesis...
March 15, 2017: Journal of Nutrition
https://www.readbyqxmd.com/read/28295352/should-optimal-timing-between-two-intrauterine-transfusions-be-based-on-estimated-daily-decrease-of-hemoglobin-or-on-measurement-of-fetal-middle-cerebral-artery-peak-systolic-velocity
#8
Louise Ghesquière, Véronique Houfflin-Debarge, Hélène Behal, Capucine Coulon, Damien Subtil, Pascal Vaast, Charles Garabedian
BACKGROUND: To best predict the recurrence of fetal anemia after intrauterine transfusion (IUT), the measurement of middle cerebral artery peak systolic velocity (PSV) and the estimation of hemoglobin (Hb) daily decrease are compared. STUDY DESIGN AND METHODS: A retrospective study including 38 patients who had at least two IUTs in a context of red blood cell alloimmunization was conducted. PSV values before first, second, and third IUTs were collected and expected Hb level was calculated according to various Hb daily decrease formulas as proposed in the literature...
April 2017: Transfusion
https://www.readbyqxmd.com/read/28277068/vitamin-c-and-trolox-decrease-oxidative-stress-and-hemolysis-in-cold-stored-human-red-blood-cells
#9
Kamila Czubak, Adam Antosik, Natalia Cichon, Halina Malgorzata Zbikowska
OBJECTIVES: To investigate the effects of sodium ascorbate (SA) (5-3125 μM) and a combination of SA and Trolox (25 and 125 μM) on oxidative changes generated in red blood cells (RBCs) followed by up to 20 days refrigerated storage. METHODS: RBCs were isolated from CPD-preserved human blood. Percentage of hemolysis and extracellular activity of lactate dehydrogenase (LDH) were measured to assess the RBC membrane integrity. Lipid peroxidation (LPO), glutathione (GSH) and total antioxidant capacity (TAC) were quantified by thiobarbituric acid-reactive substances, Ellman's reagent and 2,2'-azinobis-(3-ethylbenzothiazoline-6-sulfonate) [Formula: see text]-based assay, respectively...
February 11, 2017: Redox Report: Communications in Free Radical Research
https://www.readbyqxmd.com/read/28267164/penicillamine-protected-ag20-nanoclusters-and-fluorescence-chemosensing-for-trace-detection-of-copper-ions
#10
Xianhu Liu, Weihua Ding, Yishi Wu, Chenghui Zeng, Zhixun Luo, Hongbing Fu
We report the synthesis of penicillamine-protected Ag20 nanoclusters (NCs), with properties of high monodispersity, red fluorescence and water solubility. Full characterization of the Ag20 NCs is addressed, along with first-principles optimization calculations, revealing the chemical composition and structure of the as-prepared Ag NCs within a molecular formula [Ag20(DPA)18-H](-). Moreover, natural bond orbital (NBO) analysis demonstrates the charge-transfer interactions between the ligand and Ag atoms, and helps in understanding the origins of fluorescence of Ag20 NCs related to the ligand-to-metal charge transfer (LMCT) mechanism...
March 7, 2017: Nanoscale
https://www.readbyqxmd.com/read/28179703/evaluation-of-five-discriminating-indexes-to-distinguish-beta-thalassemia-trait-from-iron-deficiency-anaemia
#11
Zahid Ullah, Aamer Ali Khattak, Sara Arif Ali, Javaid Hussain, Badshah Noor, Raheela Bano, Muhammad Amin Jan Mahsud
OBJECTIVE: To assess the reliability of different red blood cell indices-based formulae in the indexes formula in differential diagnosis of beta thalassemia trait and iron deficiency anaemia. METHODS: This cross-sectional study was conducted between January and October 2015 in Dera Ismail Khan in the Khyber Pakhtunkhwa province of Pakistan. Patients of beta thalassemia trait and iron deficiency anaemia were registered irrespective of age and gender. About 5 mL of blood was taken from each patient to analyse different red cell parameters like red blood cell count, haemoglobin, mean cell volume, mean cell haemoglobin, mean cell haemoglobin concentration, and red cell distribution width...
December 2016: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/28168364/effects-of-aging-on-formula-see-text-formula-see-text-and-qsm-mri-values-in-the-subcortex
#12
M C Keuken, P-L Bazin, K Backhouse, S Beekhuizen, L Himmer, A Kandola, J J Lafeber, L Prochazkova, A Trutti, A Schäfer, R Turner, B U Forstmann
The aging brain undergoes several anatomical changes that can be measured with Magnetic Resonance Imaging (MRI). Early studies using lower field strengths have assessed changes in tissue properties mainly qualitatively, using [Formula: see text]- or [Formula: see text]- weighted images to provide image contrast. With the development of higher field strengths (7 T and above) and more advanced MRI contrasts, quantitative measures can be acquired even of small subcortical structures. This study investigates volumetric, spatial, and quantitative MRI parameter changes associated with healthy aging in a range of subcortical nuclei, including the basal ganglia, red nucleus, and the periaqueductal grey...
February 6, 2017: Brain Structure & Function
https://www.readbyqxmd.com/read/28130679/in-vivo-investigation-of-ear-canal-pulse-oximetry-during-hypothermia
#13
K Budidha, P A Kyriacou
Pulse oximeters rely on the technique of photoplethysmography (PPG) to estimate arterial oxygen saturation (SpO[Formula: see text]). In conditions of poor peripheral perfusion such as hypotension, hypothermia, and vasoconstriction, the PPG signals detected are often weak and noisy, or in some cases unobtainable. Hence, pulse oximeters produce erroneous SpO[Formula: see text] readings in these circumstances. The problem arises as most commercial pulse oximeter probes are designed to be attached to peripheral sites such as the finger or toe, which are easily affected by vasoconstriction...
January 27, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28128086/vesicular-contact-reaction-may-progress-into-erythema-multiforme
#14
Magdalena Czarnecka-Operacz, Dorota Jenerowicz, Joanna Szulczyńska-Gabor, Ewa Teresiak-Mikołajczak, Joanna Szyfter-Harris, Monika Bowszyc-Dmochowska
Dear Editor, Erythema multiforme is considered an acute skin condition, characterized by a self-limiting and sometimes recurrent course. It is regarded as a type IV hypersensitivity reaction associated with certain infections, medications, and other various triggers. Allergic contact dermatitis is in turn a delayed type of induced allergy as a result of cutaneous contact with a specific allergen to which the patient develops specific sensitivity. This type of cutaneous reaction is associated with inflammation manifesting with erythema, edema, and vesicles...
December 2016: Acta Dermatovenerologica Croatica: ADC
https://www.readbyqxmd.com/read/28123325/metabolite-profiles-of-ginsenosides-rk1-and-rg5-in-zebrafish-using-ultraperformance-liquid-chromatography-quadrupole-time-of-flight-ms
#15
Wenwen Shen, Yingjie Wei, Daoquan Tang, Xiaobin Jia, Bin Chen
BACKGROUND: In the present study, metabolite profiles of ginsenosides Rk1 and Rg5 from red ginseng or red notoginseng in zebrafish were qualitatively analyzed with ultraperformance liquid chromatography/quadrupole-time-of-flight MS, and the possible metabolic were pathways proposed. METHODS: After exposing to zebrafish for 24 h, we determined the metabolites of ginsenosides Rk1 and Rg5. The chromatography was accomplished on UPLC BEH C18 column using a binary gradient elution of 0...
January 2017: Journal of Ginseng Research
https://www.readbyqxmd.com/read/28119134/erythropoietin-as-a-performance-enhancing-drug-its-mechanistic-basis-detection-and-potential-adverse-effects
#16
Olivier Salamin, Tiia Kuuranne, Martial Saugy, Nicolas Leuenberger
Erythropoietin (EPO) is the main hormone regulating red blood cell (RBC) production. The large-scale production of a recombinant human erythropoietin (rHuEPO) by biotechnological methods has made possible its widespread therapeutic use as well as its misuse in sports. Since the marketing of the first epoetin in 1989, the development has progressed to the third-generation analogs. However, the production of rHuEPO is costly, and the frequent administration of an injectable formula is not optimal for compliance of therapeutic patients...
January 21, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28078493/false-positive-newborn-screen-using-the-beutler-spot-assay-for-galactosemia-in-glucose-6-phosphate-dehydrogenase-deficiency
#17
Grace Stuhrman, Stefanie J Perez Juanazo, Kea Crivelly, Jennifer Smith, Hans Andersson, Eva Morava
Classical galactosemia is detected through newborn screening by measuring galactose-1-phosphate uridylyltransferase (GALT) in the USA primarily via the Beutler spot assay. We report on an 18-month-old patient with glucose-6-phosphate dehydrogenase (G6PD) deficiency that was originally diagnosed with classical galactosemia. The patient presented with elevated liver function enzymes and bilirubinemia and was immediately treated with soy-based formula. Confirmatory tests revealed deficiency of the GALT enzyme, however, full-sequencing of GALT was normal, suggestive of a different ideology...
January 12, 2017: JIMD Reports
https://www.readbyqxmd.com/read/28077330/dehydropachymic-acid-decreases-bafilomycin-a1-induced-%C3%AE-amyloid-accumulation-in-pc12-cells
#18
Mengyao Yu, Xiaoyan Xu, Nan Jiang, Wei Wei, Fang Li, Liming He, Xia Luo
ETHNOPHARMACOLOGICAL RELEVANCE: Fuling, the sclerotium of Poria cocos, was frequently used in traditional Chinese medicine (TCM) formulae for Alzheimer's disease (AD) intervention over the past 10 centuries. And its extracts exhibited significant effects in both cellular and animal models of AD in previous studies. However, its mechanisms on prevention and treatment of AD have not been well elucidated yet. AIM OF THE STUDY: To investigate the effect and corresponding mechanisms of dehydropachymic acid, which is one of the major triterpenes in Poria cocos, on the clearance of β-Amyloid accumulation in bafilomycin A1 induced PC12 cells...
January 7, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/27959437/traditional-medicine-sobokchukeo%C3%A2-tang-modulates-the-inflammatory-response-in-adipocytes-and-macrophages
#19
Hoyoung Lee, Eun Hyoung Shim, Myeong Soo Lee, Chang-Seon Myung
Sobokchukeo-Tang (ST) is a well-known formula that is used for treating primary dysmenorrhea caused by blood stasis syndrome (BSS) in Korea and China. The current study investigated the anti‑inflammatory and anti‑adipogenesis effects of ST on adipocytes and macrophages. The anti‑inflammatory efficacy of ST was evaluated in RAW 264.7 cells and differentiated THP‑1 cells. To induce inflammation, the cells were treated with lipopolysaccharide (LPS; 1 µg/ml). Following the induction of inflammation, the levels of proinflammatory cytokines, interleukin‑6 (IL‑6) and tumor necrosis factor‑α (TNF‑α) in the cell supernatant were detected using enzyme‑linked immunosorbent assay...
January 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/27924786/evolution-of-a-high-local-strain-in-rolling-up-mos2-sheets-decorated-with-ag-and-au-nanoparticles-for-surface-enhanced-raman-scattering
#20
Da Young Hwang, Dong Hack Suh
We report that a high local strain was obtained for multilayer MoS2 nanoscrolls decorated with noble nanoparticles (Ag and Au NPs) using a rolling process beyond breaking or slipping of MoS2. The local strain was estimated through the bending strain in the nanoscrolls and the extent of coverage of Ag and Au NPs decorated on MoS2, exhibiting magnified surface-enhanced Raman scattering. TEM images showed that the MoS2-Ag and MoS2-Au nanoscrolls have a tube-like morphology decorated with NPs on the inner and outer sides of the MoS2 nanoscrolls...
January 13, 2017: Nanotechnology
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