123 results for “3-[(5-Hydroxy-3-6”

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Research ArticleOpen accessEvery word in the titlePart I: Removing of Zn(II) from Polluted Water: Determination of Precipitation Limit Of Zn(II) Ion With 2-Hydroxy-1,2,3-Propanetricarboxylic AcidFatmir Faiku, Haxhere Faiku, Arben Haziri et al.Problem statement: The goal of this research was to investigate the condition for removing of Zn cation from water, through precipitation method with 2-hydroxy-1,2,3-propanetricarboxylic acid as ligand. Approach: In this study we examined the precipitation of Zn(II) ion in water solutions of ZnSO4 × 7H2O (1×10-2 and 5×10-3 mol L-1) with 2-hydroxy-1,2,3-propanetricarboxylic acid (1×10-1-1×10-3 mol L-1) in constant ionic strength … …American Journal of Environmental Sciences, Vol. 6, Issue 1 · 28 Feb 2010 · 6,969 accessesView PDF Cite

Research ArticleOpen accessEvery word in the titleStability of Neodymium(III) Complexes of 4-Hydroxycoumarins with Anticoagulant ActivityIrena Kostova, Irina NikolovaComplexes of neodymium(III) with 4-hydroxy-3-(3-oxo-1-phenylbutyl)-2H-1-benzopyran-2-one, 4-hydroxy-3-[1-(4-chlorophenyl)-3-oxobutyl]-2H-1-benzopyran-2-one and 4-hydroxy-3-[1-(4-nitrophenyl)-3-oxobutyl]-2H-1-benzopyran-2-one were synthesized by mixing of water solutions of neodymium(III) nitrate and the respective ligands, in amounts equal to metal: ligand molar ratio of 1: 3. The complexes were characterized and identified by elemental analysis, conductivity, IR and 1H NMR spectral data. DTA and TGA have been applied to confirm the compositions of … …American Journal of Pharmacology and Toxicology, Vol. 1, Issue 2 · 30 Jun 2006 · 7,554 accessesView PDF Cite

Research ArticleOpen accessEvery word in the titleProduction of (E) 10-Hydroxy-8-octadecenoic Acid with Lyophilized Microbial CellsA. Bódalo, J. Bastida, M.F. Máximo et al.Lyophilized non-proliferating microbial cells of Pseudomonas sp. 42A2 showed their ability to catalyze the bioconversion of oleic acid into (E)-10-hydroxy-8-octadecenoic acid (MHOD) and (E)- 7,10-dihydroxy-8-octadecenoic acid (DHOD). The reaction conditions were optimized in order to produce the maximum amount of MHOD. At 30°C and using phosphate buffer (0.1 M and pH=8), an initial substrate concentration of 10 mg mL-1 and … …American Journal of Biochemistry and Biotechnology, Vol. 1, Issue 1 · 31 Mar 2005 · 7,162 accessesView PDF Cite

Research ArticleOpen accessEvery word in the titleCrack Bridging and Deflection Toughening Mechanisms of Staggered Hydroxyapatite Lamellar Microstructure in BoneYuxi Liu, Xiaohui He, Shuge Li, Zhangdong SunThe observation experiment results of the microstructure of tibial cortical bone show that the cortical bone is a layered bio-ceramic composite material composed of Hydroxyapatite (HAP) and collagen arranged alternately. HAP is a reinforcing phase and accounts for a large proportion in cortical bone. These hydroxyapatites have long and thin sheet-like structures parallel to the outer surface of the bone, … …American Journal of Biochemistry and Biotechnology, Vol. 22, Issue 2 · 31 Jul 2026 · 890 accessesView PDF Cite

Research ArticleOpen accessEvery word in the titlePolygonatum sibiricum Red. With Steaming Yellow Rice Wine: Processing Technology, the Content of 5 Hydroxymethylfurfura and Safety AssessmentShiyu Ji, Shuo Li et al.To investigate the content and safety evaluation of 5 Hydroxymethylfurfural (5-HMF) in the processing of Polygonatum sibiricum Red, the steaming technology was optimized by response surface method combined with analytic hierarchy process of multiple indexes. The content of 5-HMF was quantitatively determined by HPLC. Safety assessment was conducted using a zebrafish model. The optimized conditions were a steaming time of … …American Journal of Biochemistry and Biotechnology, Vol. 21, Issue 2 · 20 Nov 2025 · 2,587 accessesView PDF Cite

Letters to the EditorOpen accessEvery word in the titleIs Hydroxychloroquine a Safe and Effective Choice for Covid-19 ProphylaxisRodrigo Moisés de Almeida-Leite, Tais Rondello Bonatti, Carolina Rodrigues Ponzoni et al.The authors speculate about the possibility of Hydroxychloroquine as Covid-19 Phrophylaxis in the dose of 400 mg per week. The authors compared the experience of Malaria phrophylaxis in this dose, with acceptable safety profile. Also, we compared in vitro susceptibility of SARS-Cov-2 with that of Plasmodium falciparum. This agent show significant higher potency for the first. Also, the extended Half-life … …American Journal of Infectious Diseases, Vol. 16, Issue 3 · 29 Jul 2020 · 7,048 accessesView PDF Cite

Research ArticleOpen accessEvery word in the titleProduction and Evaluation of Hydroxyapatite (HAp) Properties of Broiler’s Composite Bone (BCB) Waste at Different Sintering TemperaturesMuhammad Irfan Said, Effendi Abustam, Asdar Gani et al.Bone is one of the perishable livestock wastes, so serious attention is needed. The wastes are produced by Poultry Slaughterhouse (PSh) primarily in the process of separating meat from bone to produce boneless products. The main constituent of bone is the crystals Ca and P, which are the major elements of Hydroxyapatite (HAp). The purpose of this study was to … …OnLine Journal of Biological Sciences, Vol. 18, Issue 3 · 8 May 2018 · 7,711 accessesView PDF Cite

Research ArticleOpen accessEvery word in the titleAntibacterial Activity of β-Cyclodextrin and 2-Hydroxypropyl-β-Cyclodextrin Trimethoprim ComplexesHsien-Kuo Sun, Madhumathi Seshadri, Scott Lingard et al.Problem statement: Cyclodextrin complexation has previously been shown to improve the solubility and dissolution properties of trimethoprim; however, no report provides an account of the effect cyclodextrin complexation has on the antibacterial activity of this agent. Approach: β-cyclodextrin and 2-hydroxypropyl β-cyclodextrin inclusion complexes of trimethoprim were prepared and confirmed by differential scanning calorimetry and proton nuclear magnetic resonance. The in-vitro … …Current Research in Microbiology, Vol. 2, Issue 1 · 26 Oct 2011 · 14,801 accessesView PDF Cite

Research ArticleOpen accessEvery word in the titleIn Vitro Interaction of 5-Hydroxytrptamine with Cytosolic Molybdenum Hydroxylases as a Potential Inhibitor for Initial Rates ActivitiesAbdullah M. Al-Mohizea, Abd El-Galil E. Amr, Mohamed A. Al-OmarProblem statement: The role of 5-HT has been investigated in many behavioral activities. Thus, studies using raphe lesion showed that 5-HT is involved in sleep, general activity levels, habituation, aggression, pain sensitivity and morphine analgesia, avoidance behavior, self-stimulation and water consumption. Approach: The metabolic interaction between serotonin (5- hydroxytrptamine) and indole-3-aldehyde and xanthine via aldehyde oxidase (EC 1.2.3.1) and xanthine … …American Journal of Biochemistry and Biotechnology, Vol. 6, Issue 3 · 30 Sep 2010 · 7,026 accessesView PDF Cite

Research ArticleOpen accessEvery word in the titleEffect of Thickness of Tris (8-Hydroxyquinolinato) Aluminum on the Photoluminescence and I-V Characteristic of Organic Light Emitting StructureLim Mei Yee, Wan Mahmood Mat Yunus, Zainal Abidin Talib, Anuar KassimProblem statement: How the thickness of the tris (8-hydroxyquinolinato) Aluminum (Alq3) effect the optical and electrical properties of organic light emitting diode. Approach: The optimum thickness, photoluminescence and current-voltage characteristic of Alq3 layer on N, N-bis (inaphthyl)- N,N-diphenyl-1,1-biphenyl-4,4-diamine (55 nm) layer in Organic Light-Emitting Devices (OLED) structure are reported. Alq3 and NPB organic layers are used as Electron Transport Layer … …American Journal of Applied Sciences, Vol. 7, Issue 9 · 30 Sep 2010 · 8,249 accessesView PDF Cite