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Phosphorous

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https://www.readbyqxmd.com/read/28927358/understanding-fe-2-toxicity-and-p-deficiency-tolerance-in-rice-for-enhancing-productivity-under-acidic-soils
#1
Sudip Das, Wricha Tyagi, Mayank Rai, Julia S Yumnam
Plants experience low phosphorus (P) and high iron (Fe) levels in acidic lowland soils that lead to reduced crop productivity. A better understanding of the relationship between these two stresses at molecular and physiological level will lead to development of suitable strategies to increase crop productivity in such poor soils. Tolerance for most abiotic stresses including P deficiency and Fe toxicity is a quantitative trait in rice. Recent studies in the areas of physiology, genetics, and overall metabolic pathways in response to P deficiency of rice plants have improved our understanding of low P tolerance...
April 2017: Biotechnology & Genetic Engineering Reviews
https://www.readbyqxmd.com/read/28927272/nonaqueous-sol-gel-synthesis-of-anatase-nanoparticles-and-their-electrophoretic-deposition-in-porous-alumina
#2
Cedric Frantz, Alessandro Lauria, Cristina Vicente Manzano, Carlos Guerra-Nuñez, Markus Niederberger, Cédric Storrer, Johann Michler, Laetitia Vérnique Philippe
TiO2 nanoparticles were synthesized by nonaqueous sol-gel route using chloride precursor and benzyl alcohol as the solvent. The obtained 4 nm size anatase nanocrystals were readily dispersible in various polar solvents allowing for simple preparation of colloidal dispersions in water, isopropyl alcohol, dimethyl sulfoxide, and ethanol. Results showed that dispersed nanoparticles have acidic properties and exhibit positive zeta-potential which is suitable for their deposition by cathodic electrophoresis. Aluminum substrates were anodized in phosphoric acid in order to produce porous anodic oxide layers with pores ranging from 160 to 320 nm...
September 19, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28926796/synthesis-thermoluminescence-defect-center-and-dosimetric-characteristics-of-lif-mg-cu-p-si-phosphor
#3
Prince David Preto, Vidyavathy Balraj, Bhushan S Dhabekar, S Watanabe, T K Gundu Rao, Nilo F Cano
LiF:Mg,Cu,P,Si (MCPS), a new tissue equivalent phosphor, was synthesized by solid state method. Powder x-ray diffraction and scanning electron microscope were employed to determine the structural features. The dosimetric characteristics, electron spin resonance (ESR) and defect centers of this newly prepared phosphor were investigated. The MCPS phosphor is highly sensitive when compared with LiF:Mg,Ti and LiF:Mg,Cu,P (MCP), with the TL sensitivity being 35 times and 1.3 times higher respectively. The dosimetric peak occurs at 220°C with a well defined glow curve structure similar to MCP...
August 25, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/28926787/a-novel-a-b-process-for-enhanced-biological-nutrient-removal-in-municipal-wastewater-reclamation
#4
Guangjing Xu, Han Wang, Jun Gu, Nan Shen, Zheng Qiu, Yan Zhou, Yu Liu
This study developed an innovative A-B process for enhanced nutrients removal in municipal wastewater reclamation, in which a micro-aerated moving bed biofilm reactor served as A-stage and a step-feed sequencing batch reactor (SBR) as B-stage. In the A-stage, 55% of COD and 15% of ammonia nitrogen was removed, while more than 88% of the total nitrogen was removed via nitritation and denitritation, together with 93% of phosphorous removal at the B-stage where ammonia oxidizing bacteria activity was significantly higher than nitrite oxidizing bacteria activity...
September 12, 2017: Chemosphere
https://www.readbyqxmd.com/read/28926770/1-25-oh-2d3-induces-regulatory-t-cell-differentiation-by-influencing-the-vdr-plc-%C3%AE-1-tgf-%C3%AE-1-pathway
#5
Qiang Zhou, Shengying Qin, Jinyan Zhang, Lin Zhon, Zhihai Pen, Tonghai Xing
Vitamin D has been recommended as an immune modulator in recent years, in addition to regulating calcium-phosphorous-bone metabolism. Clinical studies on organ transplantation found that vitamin D sufficiency patients were less likely to develop acute cellular rejection within one year after transplantation compared to those with vitamin D deficiency. Thus, a high percentage of regulatory T cells might play a key role in preventing acute cellular rejection (ACR). In this report, we studied the specific effects of 1,25(OH)2D3 on human T cell diff ;erentiation, and determined the potential molecule mechanism behind...
September 16, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28926251/correction-to-theoretical-study-on-the-acidities-of-chiral-phosphoric-acids-in-dimethyl-sulfoxide-hints-for-organocatalysis
#6
Chen Yang, Xiao-Song Xue, Jia-Lu Jin, Xin Li, Jin-Pei Cheng
No abstract text is available yet for this article.
September 19, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/28926231/resonance-emission-enhancement-ree-for-narrow-band-red-emitting-a2gef6-mn-4-a-na-k-rb-cs-phosphors-synthesized-via-a-precipitation-cation-exchange-route
#7
Hongzhou Lian, Qingming Huang, Yeqing Chen, Kai Li, Sisi Liang, Mengmeng Shang, Manman Liu, Jun Lin
Narrow band red-emitting A2GeF6:Mn(4+) (A = Na, K, Rb, Cs) phosphors were prepared through a two-step precipitation-cation exchange route using a K2MnF6 precursor as the Mn(4+) source. The phase purity, morphology, and constituent were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectric spectroscopy (XPS), and electron paramagnetic resonance (EPR) examination. Optical properties were investigated by photoluminescence spectra (PL and PLE) and high-resolution PL. A temperature-dependent PL examination was performed to investigate the electron-phonon coupling emission mechanism of Mn(4+) in these alkali fluorogermanates...
September 19, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28925531/theoretical-evidences-behind-bifunctional-catalytic-activity-in-pristine-and-functionalized-al2c-monolayer
#8
Rosely Almeida, Amitava Banerjee, Sudip Chakraborty, Jailton Almeida, Rajeev Ahuja
First principles electronic structure calculations based on density functional theory (DFT) framework are performed to investigate hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) on two-dimensional Al2C monolayer. The monolayer is functionalized with several dopants and four prominent doping elements are nitrogen (N), phosphorous (P), boron (B) and sulphur (S). After determining the individual adsorption energy of hydrogen and oxygen on different functionalized Al2C monolayer, the adsorption free energies are predicted subsequently for each of the functionalized cases in order to predict which case of functionalization serves better for HER or OER...
September 19, 2017: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
https://www.readbyqxmd.com/read/28923829/estrogen-deprivation-aggravates-cardiac-hypertrophy-in-non-obese-type-2-diabetic-goto-kakizaki-gk-rats
#9
Nattayaporn Apaijai, Narattaphol Charoenphandhu, Jitjiroj Ittichaichareon, Panan Suntornsaratoon, Nateetip Krishnamra, Ratchaneevan Aeimlapa, Siriporn C Chattipakorn, Nipon Chattipakorn
Both type 2 diabetes mellitus (T2DM) and estrogen deprivation have been shown to be associated with the development of cardiovascular disease and adverse cardiac remodeling.  However, the role of estrogen deprivation on adverse cardiac remodeling in non-obese T2DM rats has not been clearly elucidated.  We hypothesized that estrogen-deprivation aggravates adverse cardiac remodeling in Goto-Kakizaki (GK) rats.  Wild-type (WT) and GK rats at the age of 9 months old were divided into 2 subgroups to have either a sham operation (WTS, GKS) or a bilateral ovariectomy (WTO, GKO) (n=6/subgroup)...
September 18, 2017: Bioscience Reports
https://www.readbyqxmd.com/read/28922642/influence-of-bi-doping-on-the-structure-and-photoluminescence-of-zno-phosphor-synthesized-by-the-combustion-method
#10
Trilok K Pathak, H C Swart, R E Kroon
Bismuth doped ZnO (BZO) phosphors have been synthesized by the combustion method. The effect of Bi doping up to 4mol% on the structural, morphological, optical and photoluminescence (PL) properties have been investigated. X-ray diffraction analysis revealed that the BZO phosphors had the hexagonal wurtzite structure. The nanocrystallite size decreased from 75 to 38nm as the Bi concentration increased up to 3mol%, but then increased slightly for 4mol% Bi. The chemical states of the synthesized BZO phosphors were investigated using X-ray photoelectron spectroscopy and revealed the presence of both Bi(3+) and Bi(2+) charge states...
September 13, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28922491/temporal-and-remote-tuning-of-piezophotonic-effect-induced-luminescence-and-color-gamut-via-modulating-magnetic-field
#11
Man-Chung Wong, Li Chen, Gongxun Bai, Long-Biao Huang, Jianhua Hao
Light-emitting materials have been extensively investigated because of their widespread applications in solid-state lighting, displays, sensors, and bioimaging. In these applications, it is highly desirable to achieve tunable luminescence in terms of luminescent intensity and wavelength. Here, a convenient physical approach of temporal and remote tuning of light-emitting wavelength and color is demonstrated, which is greatly different from conventional methods. It is shown that by modulating the frequency of magnetic-field excitation at room temperature, luminescence from the flexible composites of ZnS:Al, Cu phosphors induced by the piezophotonic effect can be tuned in real time and in situ...
September 18, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28921844/functional-traits-determine-tree-growth-and-ecosystem-productivity-of-a-tropical-montane-forest-insights-from-a-long-term-nutrient-manipulation-experiment
#12
Selene Báez, Jürgen Homeier
Trait response-effects are critical to forecast community structure and biomass production in highly diverse tropical forests. Ecological theory and few observation studies indicate that trees with acquisitive functional traits would respond more strongly to higher resource availability than those with conservative traits. We assessed how long-term tree growth in experimental nutrient addition plots (N, P and N+P) varied as a function of morphological traits, tree size and species identity. We also evaluated how trait-based responses affected stand scale biomass production considering the community structure...
September 18, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28921832/synthesis-and-bioactivity-assessment-of-high-silica-content-quaternary-glasses-with-ca-p-ratios-of-1-5-and-1-67-made-by-a-rapid-sol-gel-process
#13
Basam A E Ben-Arfa, Hugo R Fernandes, Isabel M Miranda Salvado, José M F Ferreira, Robert C Pullar
Sol-gel glasses in quaternary silica-sodium-calcium-phosphorous systems have been synthesised using a rotary evaporator for rapid drying without ageing. This novel fast drying method drastically decreases the total drying and ageing time from several weeks to only 1 hour, thus overcoming a serious drawback in sol-gel preparation procedures for bioglasses. This work investigates the bioactivity behaviour of two glasses synthesised by this fast method, with Ca:P ratios of 1.5, and 1.67. X-ray diffraction (XRD), Inductive coupled plasma (ICP), Fourier-transform infrared (FTIR) and Raman spectroscopy were used to confirm the bioactivity of the synthesised powders...
September 16, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28920818/biochemistry-panel-reference-intervals-for-juvenile-goldfish-carassius-auratus
#14
Laura A Adamovicz, Macy R Trosclair, Gregory A Lewbart
Reference intervals for diagnostic tests are vitally important for clinical decision making. Despite the popularity of pet goldfish (Carassius auratus), reference intervals have not been generated for routine biochemistry panel analytes in this species. This study establishes de novo reference intervals for packed cell volume and total solids, using 47 apparently healthy immature goldfish, and for 11 common chemistry panel analytes (albumin, aspartate aminotransferase, calcium, creatine kinase, globulin, blood glucose, sodium, potassium, phosphorous, total protein, and uric acid) using 39 immature goldfish...
September 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28920667/warm-white-light-emitting-diode-based-on-a-dye-loaded-metal-organic-framework-for-fast-white-light-communication
#15
Zhiye Wang, Zi Wang, Bangjiang Lin, Xuefu Hu, YunFeng Wei, Cankun Zhang, Bing An, Cheng Wang, Wenbin Lin
A dye@metal-organic framework (MOF) hybrid was used as a phosphor in a white light emitting diode (WLED) for fast visible-light communication (VLC). The white light was generated from a combination of blue emission of the 9,10-dibenzoate anthracene (DBA) linkers and yellow emission of the encapsulated Rhodamine B molecules. The MOF structure not only prevents dye molecules from aggregation-induced quenching, but also efficiently transfers energy to the dye for dual emission. This light-emitting material shows emission lifetimes of 1...
September 18, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28919656/direct-valorisation-of-waste-cocoa-butter-triglycerides-via-catalytic-epoxidation-ring-opening-and-polymerisation
#16
Dorota D Plaza, Vinzent Strobel, Parminder Kaur Ks Heer, Andrew B Sellars, Seng-Soi Hoong, Andrew J Clark, Alexei A Lapkin
BACKGROUND: Development of circular economy requires significant advances in the technologies for valorisation of waste, as waste becomes new feedstock. Food waste is a particularly important feedstock, containing large variation of complex chemical functionality. Although most food waste sources are complex mixtures, waste from food processing, no longer suitable for the human food chain, may also represent relatively clean materials. One such material requiring valorisation is cocoa butter...
September 2017: Journal of Chemical Technology and Biotechnology
https://www.readbyqxmd.com/read/28917878/cellulose-nanocrystals-from-passion-fruit-peels-waste-as-antibiotic-drug-carrier
#17
Christian J Wijaya, Stephanie N Saputra, Felycia E Soetaredjo, Jindrayani N Putro, Chun X Lin, Alfin Kurniawan, Yi-Hsu Ju, Suryadi Ismadji
Due to its excellent chemical and physical properties, cellulose nanocrystals (CNC) possess many potential advanced functional applications. In this study, CNC was extracted from natural product by hydrolyzing cellulose segment of passionfruit peels using sulphuric acid solution. The capability of CNC as drug carrier was tested toward tetracycline antibiotic. The drug loading processes were carried out at various pH (3-7) with the optimum uptake of tetracycline achieved at pH 3. The in vitro release of tetracycline drug was carried out in phosphoric buffer medium with two different pH conditions at 37°C...
November 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28917163/raman-and-fourier-transform-infrared-spectroscopic-study-of-pyromorphite-vanadinite-solid-solutions
#18
Urszula Solecka, Tomasz Bajda, Justyna Topolska, Sylwia Zelek-Pogudz, Maciej Manecki
Due to the great range of the application fields for apatites, there is a strong need to complete the data set determining the properties of these minerals. In this study, Raman and Infrared spectra of the phases from pyromorphite Pb5(PO4)3Cl - vanadinite Pb5(VO4)3Cl series were investigated. Totally, 9 samples (2 end-members and 7 solid solutions of the series) were synthesized at 25°C and pH=3.5, and analyzed. In the Raman and Infrared spectra of the studied Pb-apatites, the bands typical for the vibrations in the PO4 and the VO4 tetrahedra appeared...
August 26, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28916883/different-post-processing-conditions-for-3d-bioprinted-%C3%AE-tricalcium-phosphate-scaffolds
#19
Liciane Sabadin Bertol, Rodrigo Schabbach, Luis Alberto Loureiro Dos Santos
The development of 3D printing hardware, software and materials has enabled the production of bone substitute scaffolds for tissue engineering. Calcium phosphates cements, such as those based on α-tricalcium phosphate (α-TCP), have recognized properties of osteoinductivity, osteoconductivity and resorbability and can be used to 3D print scaffolds to support and induce tissue formation and be replaced by natural bone. At present, however, the mechanical properties found for 3D printed bone scaffolds are only satisfactory for non-load bearing applications...
September 15, 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/28916797/synthesis-of-enhanced-phosphonic-functional-groups-mesoporous-silica-for-uranium-selective-adsorption-from-aqueous-solutions
#20
H Sarafraz, A Minuchehr, Gh Alahyarizadeh, Z Rahimi
Enhanced phosphonic functional group (PFG)-based mesoporous silicas (MSs) were synthesized by hydrothermal method for uranium [U(VI)] selective adsorption from aqueous solutions. Considering that PFGs are directly related to U(VI) adsorption, the main idea of this research was to synthesize enhanced PFG-MSs and consequently enhance U(VI) adsorption. We synthesized two kinds of MSs based on acetic and phosphoric acids at weakly acidic pH, which allows high-loading phosphonic functionality. The main sodium and phosphonic functionality sources were sodium metasilicate and diethylphosphatoethyltriethoxysilane (DPTS)...
September 15, 2017: Scientific Reports
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