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https://www.readbyqxmd.com/read/28441628/potassium-deficiency-affects-the-carbon-nitrogen-balance-in-cotton-leaves
#1
Wei Hu, Taylor D Coomer, Dimitra A Loka, Derrick M Oosterhuis, Zhiguo Zhou
Potassium (K) plays important roles in the metabolism of carbon (C) and nitrogen (N), but studies of K deficiency affecting C-N balance are lacking. This study explored the influence of K deficiency on C-N interaction in cotton leaves by conducting a field experiment with cotton cultivar DP0912 under two K rates (K0: 0 kg K2O ha(-1) and K67: 67 kg K2O ha(-1)) and a controlled environment experiment with K-deficient solution (K1: 0 mM K(+)) and K-sufficient solution (K2: 6 mM K(+)). The results showed that leaf K content, leaf number, leaf area, boll number, reproductive dry weight and total dry weight were significant lower under K deficiency (K0 or K1)...
April 6, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28439440/a-comparison-of-the-effects-of-20-mannitol-and-3-nacl-on-coagulation-parameters-in-vitro-using-rotem-a-prospective-randomized-crossover-study
#2
Achmet Ali, Bilge Şencan, Pulat Akın Sabancı, Demet Altun, Aylin Tetik, Lerzan Recep Doğan, İbrahim Özkan Akıncı
OBJECTIVE: The aim of the present study is to compare the effect of 20% mannitol and 3% NaCl on blood coagulation in vitro using rotational thromboelastometry (ROTEM). METHODS: Twenty-millilitre blood samples were obtained from 15 volunteers. In each group, 2 mL blood samples were collected into both polypropylene tubes and EDTA tubes for ROTEM and hemogram analysis. After sampling, blood samples were diluted with test solutions. Group C (control): Only blood, Group M (mannitol): 7% vol 20% mannitol concentration in the blood, Group hypertonic saline (HS): 7% vol 3% hypertonic saline (NaCl) in the blood, Group M/H (mannitol and hydroxyethyl starch solutions [HES]): 6% vol 20% mannitol concentration and 8% vol HES in the blood and Group HS/H (hypertonic saline and HES): 6% vol 3% hypertonic saline concentration and 8% vol HES in the blood...
April 2017: Turkish Journal of Anaesthesiology and Reanimation
https://www.readbyqxmd.com/read/28431348/evaluation-of-structural-effects-on-the-flocculation-performance-of-a-co-graft-starch-based-flocculant
#3
Zhouzhou Liu, Hua Wei, Aimin Li, Hu Yang
The molecular structure of a material substantially determines its final application performance. In this work, a series of starch-based flocculants with different charge densities and average graft chain lengths were prepared by the co-graft polymerization of acrylamide and [(2-methacryloyloxyethyl) trimethyl ammonium chloride] (St-g-PAM-co-PDMC). The flocculation performance of St-g-PAM-co-PDMC was studied systematically at neutral pH using kaolin suspension and sodium humate (NaHA) aqueous solution as synthetic wastewaters...
April 18, 2017: Water Research
https://www.readbyqxmd.com/read/28429992/effect-of-replacing-maize-grain-and-soybean-meal-with-a-xylose-treated-wheat-grain-on-feed-intake-and-performance-of-dairy-cows
#4
Jens Benninghoff, Gregor Hamann, Herbert Steingaß, Franz-Josef Romberg, Karl Landfried, Karl-Heinz Südekum
This study evaluated wheat grain which was treated with xylose in aqueous Ca-Mg lignosulphonate solution at elevated temperatures (WeiPass®) in order to reduce ruminal degradation of starch and crude protein. The two tested isoenergetic and isonitrogenous diets contained on dry matter (DM) basis either 16% maize grain and 6.4% soybean meal (Diet CON) or 17.8% xylose-treated wheat and 4.6% soybean meal (Diet Wheat). Thirty-six German Holstein dairy cows were assigned to one of the two groups according to parity, body weight after calving, and milk yield during the previous lactation...
June 2017: Archives of Animal Nutrition
https://www.readbyqxmd.com/read/28417910/effects-of-three-commercially-available-sports-drinks-on-substrate-metabolism-and-subsequent-endurance-performance-in-a-postprandial-state
#5
Lu Qin, Qi-Rong Wang, Zi-Long Fang, Ting Wang, Ai-Qi Yu, Yu-Jie Zhou, Yi Zheng, Mu-Qing Yi
Purpose: To examine the effects of commercially available sports beverages with various components on substrate metabolism and subsequent performance. Methods: Two studies were conducted in a double-blinded, counterbalanced manner. Study I was designed to determine the glycemic index, while study II determined the utilization of substrates and subsequent exercise performance. Ten healthy male participants (age 21.70 ± 2.41 years, height 176.60 ± 5.23 cm, weight 66.58 ± 5.38 kg, V̇O2max 48.1 ± 8.4 mL/kg/min) participated in both study I and study II...
April 12, 2017: Nutrients
https://www.readbyqxmd.com/read/28415415/curcumin-loaded-polysaccharide-nanoparticles-optimization-and-anticariogenic-activity-against-streptococcus-mutans
#6
Amir Maghsoudi, Fatemeh Yazdian, Saleheh Shahmoradi, Leila Ghaderi, Mehran Hemati, Ghassem Amoabediny
Curcumin was loaded into different polysaccharide nanoparticles chitosan, alginate and starch, using the desolvation method. Curcumin-loaded nanoparticles exhibited enhanced solubility in aqueous solutions comparing with free curcumin. Effects of formulation parameters such as curcumin concentration and different volumes of ethanolic solution were affected the particle size and loading efficiency. Under optimum conditions, curcumin-loaded chitosan, starch and alginate nanoparticles with mean particles sizes of 66...
June 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28406141/role-of-slow-release-nanocomposite-fertilizers-on-nitrogen-and-phosphate-availability-in-soil
#7
Amanda S Giroto, Gelton G F Guimarães, Milene Foschini, Caue Ribeiro
Developing efficient crop fertilization practices has become more and more important due to the ever-increasing global demand for food production. One approach to improving the efficiency of phosphate and urea fertilization is to improve their interaction through nanocomposites that are able to control the release of urea and P in the soil. Nanocomposites were produced from urea (Ur) or extruded thermoplastic starch/urea (TPSUr) blends as a matrix in which hydroxyapatite particles (Hap) were dispersed at ratios 50% and 20% Hap...
April 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28405002/development-of-new-carbon-resources-production-of-important-chemicals-from-algal-residue
#8
Sho Yamaguchi, Yuuki Kawada, Hidetaka Yuge, Kan Tanaka, Sousuke Imamura
Algal biomass has received attention as an alternative carbon resource owing not only to its high oil production efficiency but also, unlike corn starch, to its lack of demand in foods. However, algal residue is commonly discarded after the abstraction of oil. The utilization of the residue to produce chemicals will therefore increase the value of using algal biomass instead of fossil fuels. Here, we report the use of algal residue as a new carbon resource to produce important chemicals. The application of different homogeneous catalysts leads to the selective production of methyl levulinate or methyl lactate...
April 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28396935/state-of-the-art-in-fluid-and-volume-therapy-a%C3%A2-user-friendly-staged-concept-english-version
#9
M Rehm, N Hulde, T Kammerer, A S Meidert, K Hofmann-Kiefer
Adequate intraoperative infusion therapy is essential for the perioperative outcome of a patient. Both hypo- and hypervolemia can lead to an increased rate of perioperative complications and to a worse outcome. Perioperative infusion therapy should therefore be needs-based. The primary objective is the maintenance of preoperative normovolemia using a rational infusion strategy. Perioperative fluid losses should be differentiated from volume losses due to surgical bleeding or protein losses into the interstitial space...
April 10, 2017: Der Anaesthesist
https://www.readbyqxmd.com/read/28390486/colorimetric-biosensor-for-the-assay-of-paraoxon-in-environmental-water-samples-based-on-the-iodine-starch-color-reaction
#10
Liangqia Guo, Zhihong Li, Huan Chen, Yarong Wu, Ling Chen, Zhiping Song, Tianran Lin
In this work, a new colorimetric biosensor for the assay of paraoxon was developed via the conventional iodine-starch color reaction and multi-enzyme cascade catalytic reactions. In the presence of acetylcholine chloride, acetylcholinesterase (AChE) and choline oxidase (ChO) catalyzed the formation of H2O2, which then activated horseradish peroxidase (HRP) to catalyze the oxidation of KI to produce an iodine-starch color reaction. Upon exposure to paraoxon, the catalytic activity of AChE was inhibited and less H2O2 generated, resulting in a decrease in the production of I2 and a drop in the intensity of solution color...
May 15, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28385245/preparation-and-characterization-of-chitosan-poly-vinyl-alcohol-nanocomposite-films-embedded-with-functionalized-multi-walled-carbon-nanotube
#11
Shadpour Mallakpour, Ahmadreza Nezamzadeh Ezhieh
The attempt of this study was to modify chitosan/poly(vinyl alcohol) (CS/PVA) matrix properties using Starch/Multi-Walled Carbon Nanotube (MWCNT)-Valine (SMV) nanocomposite (NC) as a new filler. To prevent aggregation and obtain homogeneous dispersion of MWCNT into the matrix, at first the surface of MWCNTs was covalently modified by Valine as a natural amino acid. Then, modified MWCNT was incorporated into the starch matrix for the preparation of SMV NC. In the second step, different concentrations of prepared SMV NCs (30, 50 and 70wt...
June 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28380062/different-effects-of-fluid-loading-with-saline-gelatine-hydroxyethyl-starch-or-albumin-solutions-on-acid-base-status-in-the-critically-ill
#12
Angélique M E Spoelstra-de Man, Annemieke Smorenberg, A B Johan Groeneveld
INTRODUCTION: Fluid administration in critically ill patients may affect acid-base balance. However, the effect of the fluid type used for resuscitation on acid-base balance remains controversial. METHODS: We studied the effect of fluid resuscitation of normal saline and the colloids gelatine 4%, hydroxyethyl starch (HES) 6%, and albumin 5% on acid-base balance in 115 clinically hypovolemic critically ill patients during a 90 minute filling pressure-guided fluid challenge by a post-hoc analysis of a prospective randomized clinical trial...
2017: PloS One
https://www.readbyqxmd.com/read/28372153/synthesis-and-study-the-properties-of-stnps-gum-nanoparticles-for-salvianolic-acid-b-oral-delivery-system
#13
Xiaojing Li, Shengju Ge, Jie Yang, Ranran Chang, Caifeng Liang, Liu Xiong, Mei Zhao, Man Li, Qingjie Sun
To fabricate stable sized and shaped controlled release delivery systems for salvianolic acid B (Sal B), different food gums were individually added to short-chain glucan solution to prepare starch nanoparticles (StNPs)/gum nanocomposites by self-assembly, and Sal B was embedded in situ. The results showed that size of StNPs was reduced to ca. 45nm with the addition of chitosan and rosin, which decreased by over 50% than that of StNPs without the gum. The StNPs/guar gum nanocomposites had the largest size (109...
August 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28356126/starch-pcl-composite-nanofibers-by-co-axial-electrospinning-technique-for-biomedical-applications
#14
B Komur, F Bayrak, N Ekren, M S Eroglu, F N Oktar, Z A Sinirlioglu, S Yucel, O Guler, O Gunduz
BACKGROUND: In this study, starch and polycaprolactone (PCL), composite nanofibers were fabricated by co-axial needle electrospinning technique. Processing parameters such as polymer concentration, flow rate and voltage had a marked influence on the composite fiber diameter. Fourier transform infrared spectroscopy, scanning electron microscopy (SEM), mechanical and physical properties (such as density, viscosity and electrical conductivity) of the composite fibres were evaluated. Moreover, a cell culture test was performed in order to determine their cytotoxicity for wound dressing application...
March 29, 2017: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28347475/current-trends-in-vasopressor-use-to-the-operating-room-a-pharmacoepidemiologic-study-in-french-teaching-and-military-hospitals
#15
M Bauducel, V Piriou, C Dussart, G Aulagner, X Armoiry
OBJECTIVES: Phenylephrine, ephedrine and norepinephrine are the vasopressors most commonly used in the operating room to treat anaesthesia-induced hypotension. Two new diluted forms of phenylephrine were released in 2011 (500μg/10mL and 500μg/5mL). We initiated a study to evaluate trends in the use of vasopressors in the operating room in French hospitals over the period 2011-2014. METHODS: We conducted a longitudinal, retrospective, observational study between 2011 and 2014 in French teaching and military hospitals...
March 24, 2017: Annales Pharmaceutiques Françaises
https://www.readbyqxmd.com/read/28337763/automatic-washing-of-thawed-haematopoietic-progenitor-cell-grafts-a-preclinical-evaluation
#16
M Abonnenc, B Pesse, J-D Tissot, S Barelli, N Lion
BACKGROUND AND OBJECTIVES: Autologous haematopoietic progenitor cell (HPC) is a prerequisite for high-dose chemotherapy in treatment of several haematologic and non-haematologic malignancies. HPCs are collected by apheresis and cryopreserved until infusion. Postinfusion adverse events have been in part related to the dimethyl sulphoxide (DMSO) used as cryoprotectant. The aim was to evaluate (i) an automated sequential washing procedure for DMSO removal in thawed HPC grafts and (ii) washing solutions in replacement of hydroxyethyl starch (HES)-based solutions...
March 23, 2017: Vox Sanguinis
https://www.readbyqxmd.com/read/28337272/cold-preservation-with-hyperbranched-polyglycerol-based-solution-improves-kidney-functional-recovery-with-less-injury-at-reperfusion-in-rats
#17
Shadan Li, Bin Liu, Qiunong Guan, Irina Chafeeva, Donald E Brooks, Christopher Yc Nguan, Jayachandran N Kizhakkedathu, Caigan Du
Minimizing donor organ injury during cold preservation (including cold perfusion and storage) is the first step to prevent transplant failure. We recently reported the advantages of hyperbranched polyglycerol (HPG) as a novel substitute for hydroxyethyl starch in UW solution for both cold heart preservation and cold kidney perfusion. This study evaluated the functional recovery of the kidney at reperfusion after cold preservation with HPG solution. The impact of HPG solution compared to conventional UW and HTK solutions on tissue weight and cell survival at 4°C was examined using rat kidney tissues and cultured human umbilical vein endothelial cells (HUVECs), respectively...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28336278/thermoplastic-starch-composites-with-tio2-particles-preparation-morphology-rheology-and-mechanical-properties
#18
A Ostafińska, J Mikešová, S Krejčíková, M Nevoralová, A Šturcová, A Zhigunov, D Michálková, M Šlouf
Composites of thermoplastic starch (TPS) with titanium dioxide particles (mTiO2; average size 0.1μm) with very homogeneous matrix and well-dispersed filler were prepared by a two-step method, including solution casting (SC) followed by melt mixing (MM). Light and scanning electron microscopy confirmed that only the two-step procedure (SC+MM) resulted in ideally homogeneous TPS/mTiO2 systems. The composites prepared by single-step MM contained non-plasticized starch granules and the composites prepared by single-step SC suffered from mTiO2 agglomeration...
March 20, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28322966/influence-of-different-molar-concentrations-of-acid-on-morphological-physicochemical-and-pasting-properties-of-pakistani-basmati-and-irri-rice-starches
#19
Abeera Moin, Tahira Mohsin Ali, Abid Hasnain
Starches extracted from two dominant varieties of rice, Basmati and Irri were subjected to acid hydrolysis by preparing starch slurry of 35% (w/v) in HCl solutions of concentrations 0.1M, 0.3M and 0.8M. The scanning electron micrographs showed that granular morphology of starches significantly changed after acid hydrolysis. Acid thinning improved the solubility of starches whereas decline was observed in swelling power and water retention capacity. Paste clarity of both acid treated Basmati and Irri rice starches reduced gradually upon cold storage...
March 18, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28289929/co-encapsulation-of-amyloglucosidase-with-starch-and-saccharomyces-cerevisiae-as-basis-for-a-long-lasting-co2-release
#20
Pascal Humbert, Marina Vemmer, Marco Giampà, Hanna Bednarz, Karsten Niehaus, Anant V Patel
CO2 is known as a major attractant for many arthropod pests which can be exploited for pest control within novel attract-and-kill strategies. This study reports on the development of a slow-release system for CO2 based on calcium alginate beads containing granular corn starch, amyloglucosidase and Saccharomyces cerevisiae. Our aim was to evaluate the conditions which influence the CO2 release and to clarify the biochemical reactions taking place within the beads. The amyloglucosidase was immobilized with a high encapsulation efficiency of 87% in Ca-alginate beads supplemented with corn starch and S...
April 2017: World Journal of Microbiology & Biotechnology
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