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https://www.readbyqxmd.com/read/29779370/observation-of-interpenetration-isomerism-in-covalent-organic-frameworks
#1
Tianqiong Ma, Jian Li, Jing Niu, Lei Zhang, Ahmed S Etman, Cong Lin, Dier Shi, Pohua Chen, Lihua Li, Xin Du, Junliang Sun, Wei Wang
We report herein the first example of interpenetration isomerism in covalent organic frameworks (COFs). As a well-known three-dimensional (3D) COF, COF-300 have been synthesized and characterized by the Yaghi group in 2009 as a 5-fold interpenetrated diamond structure ( dia-c5 topology). We found that adding an ageing process prior to the reported synthetic procedure afforded the formation of an inter-penetration isomer, dia-c7 COF-300. The 7-fold interpenetrated diamond structure of this new isomer was identified by powder X-ray diffraction (PXRD) and rotation electron diffraction (RED) analyses...
May 21, 2018: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29757336/formulas-for-the-detection-%C3%AE-thalassemia-carriers-are-affected-by-changes-in-red-cell-parameters
#2
COMMENT
Deniz Aslan
No abstract text is available yet for this article.
2018: Mediterranean Journal of Hematology and Infectious Diseases
https://www.readbyqxmd.com/read/29725527/a-correction-formula-for-neuron-specific-enolase-measurement-in-hemolyzed-neonatal-serum-samples
#3
Qiang Wang, Guangrong Wang, Xiaolan Lu, Xiaolan Guo, Qin Du, Fang Lin, Quming Fan, Guoyuan Zhang, Dongsheng Wang
As a specific biomarker in neonatal hypoxic-ischemic encephalopathy (HIE), the measurement of neuron-specific enolase (NSE) has been advocated as a predictor of outcome in neurological injury. However, the measured levels of NSE may be influenced by hemolysis. In the current study, the change in the concentration of NSE in serum was measured by chemiluminescence prior to and following the addition of individual frozen and thawed red blood cells from 86 neonates that were collected within 24 h of birth. The changes in the concentration of NSE were compared with the changes in the concentration of hemoglobin (Hb), measured by the hemoglobin cyanide (HiCN) method, to establish a correction formula...
May 2018: Biomedical Reports
https://www.readbyqxmd.com/read/29716181/the-impact-of-fetal-load-of-hirudo-verbana-saline-extract-antigens-on-morphometrical-hematological-and-immunological-parameters-of-rats-in-the-early-stages-of-post-embryonic-development
#4
Ruslan F Aminov, Aleksandr K Frolov
The aim of the study was to determine the immunostimulatory effect of antigens from saline extract of the medicinal leech on the morphometric parameters of the body and major immunogenic organs of rats. Wild-type female rats were administered medicinal leech saline extract antigens intraperitoneally two weeks before and two weeks after mating (in total four injections). The offspring were examined, as were the mothers after feeding the offspring, at 1, 15, 30, 60 days after birth. The morphometric parameters of the animals were recorded...
2018: Annals of Parasitology
https://www.readbyqxmd.com/read/29710519/effects-of-shenling-baizhu-powder-herbal-formula-on-intestinal-microbiota-in-high-fat-diet-induced-nafld-rats
#5
Yupei Zhang, Kairui Tang, Yuanjun Deng, Runsen Chen, Shu Liang, Huijun Xie, Yifang He, Yanning Chen, Qinhe Yang
BACKGROUND: Worldwide, non-alcoholic fatty liver disease (NAFLD) is a common chronic liver disease closely associated with obesity, diabetes and other metabolic diseases. Shenling Baizhu powder (SLBZP), a formulation of a variety of natural medicinal plants, has hepatoprotective properties and clinical efficacy in treating non-infectious intestinal disease. SLBZP has improved NAFLD symptoms; however, its mechanism of action is unknown. METHODS: We established an NAFLD model in rats given a high-fat diet (HFD), administered different interventions and measured serum biochemical indices and inflammatory factors...
April 3, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29698811/red-blood-cells-aggregability-measurement-of-coagulating-blood-in-extracorporeal-circulation-system-with-multiple-frequency-electrical-impedance-spectroscopy
#6
Jianping Li, Achyut Sapkota, Daisuke Kikuchi, Daisuke Sakota, Osamu Maruyama, Masahiro Takei
Red blood cells (RBCs) aggregability AG of coagulating blood in extracorporeal circulation system has been investigated under the condition of pulsatile flow. Relaxation frequency fc from the multiple-frequency electrical impedance spectroscopy is utilized to obtain RBCs aggregability AG . Compared with other methods, the proposed multiple-frequency electrical impedance method is much easier to obtain non-invasive measurement with high speed and good penetrability performance in biology tissues. Experimental results show that, RBCs aggregability AG in coagulating blood falls down with the thrombus formation while that in non-coagulation blood almost keeps the same value, which has a great agreement with the activated clotting time (ACT) fibrinogen concertation (Fbg ) tests...
April 12, 2018: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/29687274/comparison-of-two-color-difference-formulas-using-the-bland-altman-approach-based-on-gingiva-color-space
#7
Cristina Gómez Polo, Javier Montero, Ana Maria Martín Casado
The objectives of this study were to determine the relationship between the results provided by the classical CIELab (ΔE ab *) and the CIEDE2000 (ΔE00) formulas and the gingival color space using the Bland and Altman limits of agreement, to use this relationship to establish the equivalences between the gingival color thresholds of perceptibility of both formulas, and to evaluate whether the relationship between ΔE ab * and ΔE00 is modified depending on the axis in which the changes occur. The means of the L*, a*, and b* coordinates of the 21 gingiva porcelain samples (Heraceram, Heraeus Kulzer Mitsui Chemical Groups) were used and the differences in color were calculated in 210 pairs of samples using the CIELab (ΔE*ab) and CIEDE2000 (ΔE00) color-difference formulas...
April 23, 2018: Odontology
https://www.readbyqxmd.com/read/29666530/evaluation-of-the-effect-of-yellow-konjac-flour-%C3%AE%C2%BA-carrageenan-mixed-gels-and-red-koji-rice-extracts-on-the-properties-of-restructured-meat-using-response-surface-methodology
#8
Simon Bambang Widjanarko, Qory Amalia, Mochamad Bagus Hermanto, Ahmad Zaki Mubarok
In the present study, the effect of two independent variables, yellow konjac flour-κ-carrageenan (KFC) mixed gels and red koji rice (RKR) extracts for the development of restructured meat product, was investigated using central composite design of response surface methodology (RSM). The assessed physical characteristics were hardness, water holding capacity (WHC), and color (° hue ) of the restructured meat products. The second order regression models with high R2 value were significantly fitted to predict the changes in hardness, WHC and color...
May 2018: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/29651033/break-the-interacting-bridge-between-eu-3-ions-in-the-3d-network-structure-of-cdmoo-4-eu-3-bright-red-emission-phosphor
#9
Weiguang Ran, Hyeon Mi Noh, Sung Heum Park, Byung Kee Moon, Jung Hyun Jeong, Jung Hwan Kim, Jinsheng Shi
Eu3+ doped CdMoO4 super red emission phosphors with charge compensation were prepared by the traditional high temperature solid-state reaction method in air atmosphere. The interrelationships between photoluminescence properties and crystalline environments were investigated in detail. The 3D network structure which composed by CdO8 and MoO4 polyhedra can collect and efficiently transmit energy to Eu3+ luminescent centers. The relative distance between Eu3+ ions decreased and energy interaction increased sharply with the appearance of interstitial occupation of O2- ions ([Formula: see text])...
April 12, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29629471/energy-transfer-and-photoluminescence-properties-of-lanthanide-containing-polyoxotitanate-cages-coordinated-by-salicylate-ligands
#10
Ning Li, Gomathy Sandhya Subramanian, Peter D Matthews, James Xiao, Vijila Chellappan, Timothy E Rosser, Erwin Reisner, He-Kuan Luo, Dominic S Wright
Polyoxotitanate (POT) cages have attracted considerable attention recently; much of this from the fact that they can be considered to be structural models for the technologically important semiconductor TiO2. Among the reported POT cages, lanthanide-containing (Ln-POT) cages are of particular interest owing to the fascinating luminescence properties of Ln3+ ions and the versatile coordination environments that they can adopt. In the present study, we report the energy transfer mechanism and photoluminescence properties of a series of isostructural Ln-POT cages coordinated by salicylate ligands, of general formula [LnTi6O3(OiPr)9(salicylate)6] (Ln-1, Ln = La to Er excluding Pm)...
April 9, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29581257/reversal-of-orbital-angular-momentum-arising-from-an-extreme-doppler-shift
#11
Graham M Gibson, Ermes Toninelli, Simon A R Horsley, Gabriel C Spalding, Euan Hendry, David B Phillips, Miles J Padgett
The linear Doppler shift is familiar as the rise and fall in pitch of a siren as it passes by. Less well known is the rotational Doppler shift, proportional to the rotation rate between source and receiver, multiplied by the angular momentum carried by the beam. In extreme cases the Doppler shift can be larger than the rest-frame frequency and for a red shift, the observed frequency then becomes "negative." In the linear case, this effect is associated with the time reversal of the received signal, but it can be observed only with supersonic relative motion between the source and receiver...
March 26, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29567367/with-a-simple-calculation-the-fraction-of-platelets-remaining-can-be-used-to-estimate-the-residual-hemoglobin-s-percentage-in-sickle-cell-disease-patients-undergoing-automated-red-blood-cell-exchange
#12
Amaris M Keiser, Garrett S Booth, Eric A Gehrie
OBJECTIVES: Automated red blood cell exchange (RBX) is an important treatment for patients with sickle cell disease (SCD). Although not specifically targeted for removal, platelets (PLTs) are collected along with red blood cells during RBX. We sought to determine whether the pre- and post- RBX PLT counts could be used to derive the post-procedure hemoglobin S% (HgbS%). METHODS: Using the pre- and post- RBX lab values of 59 SCD patients undergoing 112 RBX procedures over 1 year, we derived mathematical formulas which estimate the post-RBX HgbS% based on the pre-RBX HgbS%, the pre- and post- RBX PLT, and a correction factor...
March 14, 2018: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/29534442/food-sources-of-energy-and-macronutrient-intakes-among-infants-from-6-to-12-months-of-age-the-growing-up-in-singapore-towards-healthy-outcomes-gusto-study
#13
Shan-Xuan Lim, Jia-Ying Toh, Linde van Lee, Wee-Meng Han, Lynette Pei-Chi Shek, Kok-Hian Tan, Fabian Yap, Keith M Godfrey, Yap-Seng Chong, Mary Foong-Fong Chong
Adequate nutrition during complementary feeding is important for the growth, development and well-being of children. We aim to examine the energy and macronutrient intake composition and their main food sources in a mother-offspring cohort study in Singapore. The diets of infants were assessed by 24 h dietary recalls or food diaries collected from mothers when their offspring were 6 (n = 760), 9 (n = 893) and 12 (n = 907) months of age. Food sources of energy and macronutrients were determined using the population proportion methodology...
March 10, 2018: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29519419/innovative-material-containing-the-natural-product-curcumin-with-enhanced-antimicrobial-properties-for-active-packaging
#14
A Papadimitriou, I Ketikidis, M-E K Stathopoulou, C N Banti, C Papachristodoulou, L Zoumpoulakis, S Agathopoulos, G V Vagenas, S K Hadjikakou
Curcumin (Curc) reacts with zinc di‑iodine (ZnI2 ) in 2:1molar ratio in the presence of an excess of a base triethylamine ((CH3 CH2 )3 N) in methanol (CH3 OH) solution towards the amorphous solid material of formula [ZnI2 (Curc)2 ] (1). The complex was characterized by melting point (m.p.), Fourier Transform-Infra Red (FT-IR) and Nuclear Magnetic Resonance of hydrogen nucleus (1 H NMR) spectroscopy. The formula of 1 was determined by X-ray fluorescence (XRF) analysis. The retention of the structure in solution was confirmed by 1 H NMR spectroscopy...
March 1, 2018: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/29510562/modifiable-predictors-of-zinc-status-in-toddlers
#15
Lisa Daniels, Sheila M Williams, Rosalind S Gibson, Rachael W Taylor, Samir Samman, Anne-Louise M Heath
Suboptimal zinc status is common in very young children and likely associated with increased risk of infection and detrimental effects on growth. No studies have determined potentially modifiable "predictors" of zinc status in toddlers from high-income countries. This cross-sectional analysis of 115 toddlers from the Baby-Led Introduction to SolidS (BLISS) study used weighed diet records (three non-consecutive days) to assess dietary intake, and a venous blood sample (trace-element free techniques) to assess plasma zinc, at 12 months of age...
March 5, 2018: Nutrients
https://www.readbyqxmd.com/read/29467259/structural-origins-of-coloration-in-the-spider-phoroncidia-rubroargentea-berland-1913-araneae-theridiidae-from-madagascar
#16
Sarah Kariko, Jaakko V I Timonen, James C Weaver, Dvir Gur, Carolyn Marks, Leslie Leiserowitz, Mathias Kolle, Ling Li
This study investigates the structural basis for the red, silver and black coloration of the theridiid spider, Phoroncidia rubroargentea (Berland, 1913) from Madagascar. Specimens of this species can retain their colour after storage in ethanol for decades, whereas most other brightly pigmented spider specimens fade under identical preservation conditions. Using correlative optical, structural and chemical analysis, we identify the colour-generating structural elements and characterize their optical properties...
February 2018: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/29433457/an-infant-formula-containing-dairy-lipids-increased-red-blood-cell-membrane-omega-3-fatty-acids-in-4-month-old-healthy-newborns-a-randomized-controlled-trial
#17
Maria Lorella Gianni, Paola Roggero, Charlotte Baudry, Catherine Fressange-Mazda, Claudio Galli, Carlo Agostoni, Pascale le Ruyet, Fabio Mosca
BACKGROUND: When breastfeeding is not possible, infants are fed formulas (IF) in which lipids are usually of plant origin. However, the use of dairy fat in combination with plant oils enables a lipid profile closer to breast milk in terms of fatty acid (FA) composition, triglyceride structure, polar lipids and cholesterol contents. The objective of this study was to determine the effect of an IF containing a mix of dairy fat and plant oils on Omega-3 FA content in red blood cells (RBC)...
February 13, 2018: BMC Pediatrics
https://www.readbyqxmd.com/read/29431779/cyclometalated-n-heterocyclic-carbene-iridium-iii-complexes-with-naphthalimide-chromophores-a-novel-class-of-phosphorescent-heteroleptic-compounds
#18
Pierre-Henri Lanoë, Jonny Chan, Antoine Groué, Geoffrey Gontard, Anny Jutand, Marie-Noelle Rager, Nicola Armaroli, Filippo Monti, Andrea Barbieri, Hani Amouri
A series of cyclometalated N-heterocyclic carbene complexes of the general formula [Ir(C^N)2 (C^C:)] has been prepared. Two sets of compounds were designed, those where (C^C:) represents a bidentate naphthalimide-substituted imidazolylidene ligand and (C^N) = ppy (3a), F2ppy (4a), bzq (5a) and those where (C^C:) represents a naphthalimide-substituted benzimidazolylidene ligand and (C^N) = ppy (3b), F2ppy (4b), bzq (5b). The naphthalimide-imidazole and naphthalimide-benzimidazole ligands 1a,b and the related imidazolium and benzimidazolium salts 2a,b were also prepared and fully characterized...
March 6, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29405631/luminescent-properties-of-novel-red-emitting-m-7-sn-po-4-6-eu-3-m-sr-ba-for-light-emitting-diodes
#19
Guo Feng, Weihui Jiang, Jianmin Liu, Cong Li, Quan Zhang
Novel red-emitting phosphors, Eu3+ -activated M7 Sn(PO4 )6 (M = Sr, Ba), were synthesized at 1200°C by conventional solid-state reaction method. The luminescent properties of M7 Sn(PO4 )6 :Eu3+ (M = Sr, Ba) phosphors were investigated, and the critical concentration of the activator (Eu3+ ) concentration were found to be 0.175 mol and 0.21 mol per formula unit for Sr7-x Sn(PO4 )6 :xEu3+ and Ba7-x Sn(PO4 )6 :xEu3+ , respectively. These phosphors presented red luminescence under the excitation of 395 or 465 nm, perfectly matching with the emissions wavelength of near-ultraviolet (UV) light-emitting diodes (LEDs) and InGaN blue LED...
March 2018: Luminescence: the Journal of Biological and Chemical Luminescence
https://www.readbyqxmd.com/read/29374806/linking-chloroplast-relocation-to-different-responses-of-photosynthesis-to-blue-and-red-radiation-in-low-and-high-light-acclimated-leaves-of-arabidopsis-thaliana-l
#20
Erhard E Pfündel, Gwendal Latouche, Armin Meister, Zoran G Cerovic
Low light (LL) and high light (HL)-acclimated plants of A. thaliana were exposed to blue (BB) or red (RR) light or to a mixture of blue and red light (BR) of incrementally increasing intensities. The light response of photosystem II was measured by pulse amplitude-modulated chlorophyll fluorescence and that of photosystem I by near infrared difference spectroscopy. The LL but not HL leaves exhibited blue light-specific responses which were assigned to relocation of chloroplasts from the dark to the light-avoidance arrangement...
January 27, 2018: Photosynthesis Research
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