Relevant bibliographies by topics / Purine compounds

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Purine compounds'

Author: Grafiati
Published: 7 September 2021
Last updated: 29 July 2025

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Journal articles on the topic "Purine compounds"

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Hasník, Zbyněk, Radek Pohl, Blanka Klepetářová, and Michal Hocek. "Synthesis of (purin-6-yl)acetates and their transformations to 6-(2-hydroxyethyl)- and 6-(carbamoylmethyl)purines." Collection of Czechoslovak Chemical Communications 74, no. 7-8 (2009): 1035–59. http://dx.doi.org/10.1135/cccc2009042.

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A novel approach to the synthesis of (purin-6-yl)acetates was developed based on Pd-catalyzed cross-coupling reactions of 6-chloropurines with a Reformatsky reagent. Their reduction with NaBH4 and treatment with MnO2 gave 6-(2-hydroxyethyl)purines, while reactions with amines in presence of NaCN afforded 6-(carbamoylmethyl)purines. Mesylation of the 6-(2-hydroxyethyl)purines followed by nucleophilic substitutions gave rise to several 6-(2-substituted ethyl)purines. This methodology was successfully applied to the synthesis of substituted purine bases and nucleosides for cytostatic and antivira
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Almeida, Catarina, Márcia C. Neves, and Mara G. Freire. "Towards the Use of Adsorption Methods for the Removal of Purines from Beer." Molecules 26, no. 21 (2021): 6460. http://dx.doi.org/10.3390/molecules26216460.

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Beer corresponds to a fermented alcoholic beverage composed of several components, including purine compounds. These molecules, when ingested by humans, can be catabolized into uric acid, contributing to uric acid’s level increase in serum, which may lead to hyperuricemia and gout. To assure a proper management of this disease, physicians recommend restrictive dietary measures, particularly by avoiding the consumption of beer. Therefore, it is of relevance to develop efficient methods to remove purine compounds from alcoholic beverages such as beer. In this review, we provide an introduction o
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Ziganshin, A. U., and L. E. Ziganshina. "Prospects for clinical use of agents acting on ATP receptors - P2-purinoreceptors." Kazan medical journal 77, no. 2 (1996): 134–36. http://dx.doi.org/10.17816/kazmj104293.

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In addition to the well-known role of purine compounds in cell metabolism, growth, and reproduction, extensive factual material has been accumulated over the past two decades, demonstrating the important role of purines in intercellular interactions. It has been established that a number of physiological and pathophysiological reactions lead to the release of purine compounds (mainly adenosine and adenosine-5'-triphosphoric acid-ATP) by cells, which can interact with special receptors for them, purine receptors. The latter are subdivided into two main classes: PPpurinoreceptors and P2-purinore
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Jin, Wei Jun, Hai Rong Zhang, Xin Yang, and Chang Song Liu. "Comparison of Room-Temperature Phosphorescence Properties of Three Purine Compounds with Cadmium Acetate as a Source of Heavy Atom Perturbation." Applied Spectroscopy 49, no. 3 (1995): 320–23. http://dx.doi.org/10.1366/0003702953963481.

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Cadmium acetate salts can greatly enhance room-temperature phosphorescence (RTP) of purine and 6-mercaptopurine. 6-Mercapto-substituent and 6-hydroxy-substituent appear quite different in their effect on the RTP of purine. The effects of cadium salt matrix and pH on the RTP of purine compounds were also investigated in detail. With cadmium acetate as a source of heavy atom perturbation, nanogram or subnanogram amounts of purines can be detected.
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Frame, I. J., Emilio F. Merino, Vern L. Schramm, María B. Cassera, and Myles H. Akabas. "Malaria parasite type 4 equilibrative nucleoside transporters (ENT4) are purine transporters with distinct substrate specificity." Biochemical Journal 446, no. 2 (2012): 179–90. http://dx.doi.org/10.1042/bj20112220.

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Malaria, caused by Plasmodia parasites, affects hundreds of millions of people. As purine auxotrophs, Plasmodia use transporters to import host purines for subsequent metabolism by the purine salvage pathway. Thus purine transporters are attractive drug targets. All sequenced Plasmodia genomes encode four ENTs (equilibrative nucleoside transporters). During the pathogenic intraerythrocytic stages, ENT1 is a major route of purine nucleoside/nucleobase transport. Another plasma membrane purine transporter exists because Plasmodium falciparum ENT1-knockout parasites survive at supraphysiological
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Kapilinskis, Zigfrīds, Irina Novosjolova, and Māris Turks. "Purine-Furan and Purine-Thiophene Conjugates." Molbank 2018, no. 4 (2018): M1024. http://dx.doi.org/10.3390/m1024.

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Furyl and thienyl moieties were introduced into a purine structure to elevate its fluorescence properties, while a trityl group was used to increase the amorphous properties of the purine compounds. The title compounds were prepared by a sequence involving a Mitsunobu, a SNAr and a Suzuki–Miyaura reaction and their photophysical properties were studied. Quantum yields in the solution reached up to 88% but only up to 5% in the thin layer.
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Martinez-Peinado, Nieves, Álvaro Lorente-Macías, Alejandro García-Salguero, et al. "Novel Purine Chemotypes with Activity against Plasmodium falciparum and Trypanosoma cruzi." Pharmaceuticals 14, no. 7 (2021): 638. http://dx.doi.org/10.3390/ph14070638.

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Malaria and Chagas disease, caused by Plasmodium spp. and Trypanosoma cruzi parasites, remain important global health problems. Available treatments for those diseases present several limitations, such as lack of efficacy, toxic side effects, and drug resistance. Thus, new drugs are urgently needed. The discovery of new drugs may be benefited by considering the significant biological differences between hosts and parasites. One of the most striking differences is found in the purine metabolism, because most of the parasites are incapable of de novo purine biosynthesis. Herein, we have analyzed
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Enos-Berlage, Jodi L., and Diana M. Downs. "Biosynthesis of the Pyrimidine Moiety of Thiamine Independent of the PurF Enzyme (Phosphoribosylpyrophosphate Amidotransferase) in Salmonella typhimurium: Incorporation of Stable Isotope-Labeled Glycine and Formate." Journal of Bacteriology 181, no. 3 (1999): 841–48. http://dx.doi.org/10.1128/jb.181.3.841-848.1999.

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ABSTRACT Genetic analyses have suggested that the pyrimidine moiety of thiamine can be synthesized independently of the first enzyme of de novo purine synthesis, phosphoribosylpyrophosphate amidotransferase (PurF), in Salmonella typhimurium. To obtain biochemical evidence for and to further define this proposed synthesis, stable isotope labeling experiments were performed with two compounds, [2-13C]glycine and [13C]formate. These compounds are normally incorporated into thiamine pyrophosphate (TPP) via steps in the purine pathway subsequent to PurF. Gas chromatography-mass spectrometry analyse
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Gajewska, Danuta, and Natalia Brzezińska. "Assessment of nutrition of adults with hyperuricemia." Biuletyn Głównej Biblioteki Lekarskiej 57, no. 382 (2024): 121–32. https://doi.org/10.2478/bgbl-2024-0011.

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Abstract Introduction. Hyperuricemia is a common problem in clinical practice. According to estimations, it may affect approximately 8.9% to 24.4% of the general population. The results of studies analyzing the effect of the intake of purine compounds from different products on the risk of hyperuricemia are inconsistent. Objective. The assessment of nutrition of adults with hyperuricemia. Material and methods. The study comprised 58 adults, including 43 women and 15 men. The mean age was 54 ± 10.6 years. The study was conducted using a questionnaire method. Dietary intake was assessed through
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Logan, Samantha R., Mark Seegobin, R. J. Neil Emery, and Craig R. Brunetti. "Components of the Nucleotide Salvage Pathway Increase Frog Virus 3 (FV3) Replication." Viruses 15, no. 8 (2023): 1716. http://dx.doi.org/10.3390/v15081716.

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Viruses are obligate intracellular parasites that alter host metabolic machinery to obtain energy and macromolecules that are pivotal for replication. Ranavirus, including the type species of the genus frog virus 3 (FV3), represent an ecologically important group of viruses that infect fish, amphibians, and reptiles. It was established that fatty acid synthesis, glucose, and glutamine metabolism exert roles during iridovirus infections; however, no information exists regarding the role of purine metabolism. In this study, we assessed the impact of exogenously applied purines adenine, adenosine
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Dissertations / Theses on the topic "Purine compounds"

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Potgieter, Wilna. "An investigation of the possible anticancer activity of seven novel bi(amido) gold(I) complexes derived from a purine or azole base." Diss., Pretoria : [s.n.], 2009. http://upetd.up.ac.za/thesis/available/etd-09112009-155357/.

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Geremia, Kara L. "Computational Estimation of the pKa's of Purines and Related Compounds." Wright State University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=wright1449754930.

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Collicott, Roland. "Investigation of chiral silicon compounds for the determination of enantiomeric purity." Thesis, n.p, 2001. http://ethos.bl.uk/.

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Lemin, David. "Synthèse d'analogues des ligands naturels de récepteurs nicotiniques et purinergiques." Doctoral thesis, Universite Libre de Bruxelles, 2004. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/211158.

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Cette thèse s’inscrit dans le cadre de l’étude de la relation structure-activité d’analogues de ligands naturels de récepteurs nicotiniques et purinergiques. Ce travail se divise en deux parties.<p><p>Dans la première partie de cette thèse, nous avons réalisé la synthèse d’analogues de la 11-homosédinone, alcaloïde isolé de la plante Sedum acre, qui présente une activité agoniste sur différents récepteurs nicotiniques du système nerveux central. Les différents analogues ont été synthétisé par application de la méthoxylation anodique pour introduire succesivement deux substituants en postion 2
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Pedreschi, Romina Paola. "Fractionation of phenolic compounds from a purple corn extract and evaluation of antioxidant and antimutagenic activities." Texas A&M University, 2005. http://hdl.handle.net/1969.1/2343.

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Qualitative and quantitative analysis of anthocyanins and other phenolic compounds from a purple corn extract was performed. The purple corn extract had cyanidin-3-glucoside, pelargonidin-3-glucoside, peonidin-3-glucoside and its respective acylated anthocyanin-glucosides. Cyadinin-3glucoside was the main constituent (44.4 ?? 4.7%) followed by the acylated cyanidin-3-glucoside (26.9 ?? 8.0%). Other phenolic compounds present in the purple corn corresponded to protocatechuic acid, vanillic acid, and p-coumaric acid. In addition, quercetin derivatives, a hesperitin derivative and pcoumaric and f
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Spell, Sarah. "The Study of Au(III) Compounds and their Interaction with Zinc Finger Proteins." VCU Scholars Compass, 2014. http://scholarscompass.vcu.edu/etd/634.

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Gold compounds have been used in medicine dating back as early as 2500 BC. Over the years gold(I) and gold(III) compounds have been used and designed to target rheumatoid arthritis, cancer, and viral diseases. New drug targets have been found for gold compounds that give insight into their mechanisms of action. Here we focus on the synthesis of Au(III) compounds designed to selectively target zinc finger (ZF) proteins. ZF proteins exhibit a variety of functions, including transcription, DNA repair, and apoptosis. Displacement of the central zinc ion, along with mutation of coordinated amino ac
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Al-Deen, Tareq Chemistry Faculty of Science UNSW. "Validation of quantitative nuclear magnetic resonance (QNMR) spectroscopy as a primary ratio analytical method for assessing the purity of organic compounds: a metrological approach." Awarded by:University of New South Wales, 2002. http://handle.unsw.edu.au/1959.4/38328.

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Raimund, Stefan. "Sources and fluxes of volatile halogenated organic compounds in highly productive marine areas." Brest, 2010. http://www.theses.fr/2010BRES2022.

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Les Composés Halogénés Organiques Volatils (VHOC) sont des composès qui influencent largement la chimie atmosphérique et qui ont des sources naturelles et anthropiques. La production biogénique, les sources marines et les flux à l’interface air-mer de ces composés sont encore peu connues et ont fait l’objet de cette étude. Un système analytique et de nouveaux systèmes de prélèvement ont été développés. Lors d’un travail au laboratoire, il a été démontré que la communication plante-plante orchestre la formation des VHOC : une algue pré-traitée réagit moins intensément après réception d’un signa
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Pradhan, Rajendra Sharad. "Formulation and in vitro release study of poly(DL-lactide) microspheres containing hydrophilic compounds, glycine and its homopeptides." Scholarly Commons, 1992. https://scholarlycommons.pacific.edu/uop_etds/2831.

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In view of current interest in several oligopeptide drugs currently being investigated for controlled implantable delivery, glycine, diglycine, triglycine, tetraglycine and pentaglycine were chosen as model compounds for encapsulation in biodegradable microspheres of DL-polylactide (DL-PLA) by a technique based on oil-in-oil emulsion and the solvent evaporation principle. A DL-polylactide concentration of 10.3% w/w and emulsifier (sorbitan sesquioleate) concentration of 0.3% v/v produced good yields of microspheres with excellent entrapment when processed under following conditions: emulsion t
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Nalla, V. "Synthesis of optically pure pharamaceuticals employing aziridines / epoxides as chiral synthons and development of novel biologically active compounds based on benzopyran -4- ones." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 2018. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/5854.

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Books on the topic "Purine compounds"

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Kribus, Bar. Ethiopian Jewish Ascetic Religious Communities. Amsterdam University Press, 2022. http://dx.doi.org/10.5117/9781641894333.

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The Betä Isra'el (Ethiopian Jews) have a unique history and religious tradition, one of the most fascinating aspects of which are the mäloksocc, commonly referred to as monks in scholarly and popular literature. The mäloksocc served as the supreme religious leaders of the Betä Isra'el and were charged with educating and initiating Betä Isra'el priests. They lived in separate compounds and observed severe purity laws prohibiting physical contact with the laity. Thus, they are the only known example in medieval and modern Jewry of ascetic communities withdrawing from the secular world and devoti
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ʻUthmān, ʻĀdil ʻAlī. Madkhal ilā taṣnīf wa-tasmīyat al-murakkabāt al-ʻuḍwīyah ḥasab niẓām IUPAC. Dār Hūmah lil-Ṭibāʻah wa-al-Nashr, 2000.

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ʻUthmān, ʻĀdil ʻAlī. Madkhal ilā taṣnīf wa-tasmīyat al-murakkabāt al-ʻuḍwīyah ḥasab niẓām IUPAC. Dār Hūmah lil-Ṭibāʻah wa-al-Nashr, 2000.

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1951-, Lusty James R., Wearden Peter, and Moreno Virtudes, eds. CRC handbook of nucleobase complexes: Transition metal complexes of naturally occuring nucleobases and their derivatives. CRC Press, 1990.

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Chiu, Ren-Jong M. S. Partial Chemotherapy of Three Cereal Viruses and Tobacco Mosaic Virus with Certain Analogues of Purine and Pyrimidine and Several Other Organic Compounds. Creative Media Partners, LLC, 2021.

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Lister, John H. Chemistry of Heterocyclic Compounds, Fused Pyrimidines: The Purines. Wiley & Sons, Incorporated, John, 2008.

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Lister, John H. The Chemistry of Heterocyclic Compounds, The Purines: Supplement 1. Wiley-Interscience, 1996.

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(Editor), H. U. Bergmeyer, J. Bermeyer (Editor), and M. Bral (Editor), eds. Methods of Enzymatic Analysis, 3.eE, Vol. 7, Metabolites 2: Tri- and Dicarboxylic Acids, Purines, Pyrimidines and Derivatives, Coenzymes, Inorganic Compounds. 3rd ed. John Wiley & Sons, 1985.

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Neish, William J. P. Xanthines and cancer. Aberdeen University Press, 1988.

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Neish, William J. P. Xanthines and Cancer: An Experimental Study of Tumour Inhibition. MacMillan Publishing Company, 1988.

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Book chapters on the topic "Purine compounds"

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Lean, Michael E. J., Hiroshi Ashihara, Michael N. Clifford, and Alan Crozier. "Purine Alkaloids: A Focus on Caffeine and Related Compounds in Beverages." In Teas, Cocoa and Coffee. Wiley-Blackwell, 2011. http://dx.doi.org/10.1002/9781444347098.ch2.

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Powell, K. L. "The Development of Antiviral Compounds Against HIV and Herpesviruses." In Genetic and Therapeutic Aspects of Lipid and Purine Metabolism. Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-642-61322-7_18.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of iron(III) complex with 2,6,9-trisubstituted purine." In Magnetic Properties of Paramagnetic Compounds, Magnetic Susceptibility Data, Volume 8. Springer Berlin Heidelberg, 2023. http://dx.doi.org/10.1007/978-3-662-66460-5_96.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of iron(III) complex with 2,6,9-trisubstituted purine." In Magnetic Properties of Paramagnetic Compounds, Magnetic Susceptibility Data, Volume 8. Springer Berlin Heidelberg, 2023. http://dx.doi.org/10.1007/978-3-662-66460-5_97.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of iron(III) complex with 2,6,9-trisubstituted purine." In Magnetic Properties of Paramagnetic Compounds, Magnetic Susceptibility Data, Volume 8. Springer Berlin Heidelberg, 2023. http://dx.doi.org/10.1007/978-3-662-66460-5_99.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of iron(III) complex with 2,6,9-trisubstituted purine." In Magnetic Properties of Paramagnetic Compounds, Magnetic Susceptibility Data, Volume 8. Springer Berlin Heidelberg, 2023. http://dx.doi.org/10.1007/978-3-662-66460-5_100.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of iron(III) complex with 2,6,9-trisubstituted purine." In Magnetic Properties of Paramagnetic Compounds, Magnetic Susceptibility Data, Volume 8. Springer Berlin Heidelberg, 2023. http://dx.doi.org/10.1007/978-3-662-66460-5_98.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of iron(III) complex with 2,6,9-trisubstituted purine." In Magnetic Properties of Paramagnetic Compounds, Magnetic Susceptibility Data, Volume 8. Springer Berlin Heidelberg, 2023. http://dx.doi.org/10.1007/978-3-662-66460-5_101.

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Ronca, Giovanni, Angela Conte, Simonetta Ronca-Testoni, et al. "Uric Acid and Purine Compounds in Aortic and Coronary Sinus Blood in Man." In Advances in Experimental Medicine and Biology. Springer US, 1989. http://dx.doi.org/10.1007/978-1-4684-5673-8_63.

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Cadet, Jean, Maurice Berger, and Anthony Shaw. "The Radiation Chemistry of the Purine Bases within DNA and Related Model Compounds." In Mechanisms of DNA Damage and Repair. Springer US, 1986. http://dx.doi.org/10.1007/978-1-4615-9462-8_8.

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Conference papers on the topic "Purine compounds"

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Reynolds, James, and Peter Bock. "Third Generation Polysiloxane Coatings for CUI Mitigation." In CORROSION 2018. NACE International, 2018. https://doi.org/10.5006/c2018-11415.

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Abstract Polysiloxane is an inorganic compound with tremendous advantages of stability vs. organic compounds such as epoxy and urethane. Third generation, pure inorganic formulation, elevated temperature polysiloxane coatings for CUI mitigation offer significant advantages over earlier versions, including true air dry, weather resistance without baking, and an ultrahigh-build spray-on insulation material suitable for cyclic service to 750 °F.
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Wongcharu, Aoraya, Chanikan Sonklin, Cherdchai Laongtiparos, Siriporn Pranee, Samitthichai Seeyangnok, and Nisalak Trongsiriwat. "Chemical Constituents of Black Galingale Rhizome from Hexane Crude Extract and its Nanoemulsion Preparation." In 2024 8th International Conference on Materials Engineering and Nano Sciences & 2024 8th International Conference on Material Engineering and Manufacturing. Trans Tech Publications Ltd, 2024. http://dx.doi.org/10.4028/p-p1fkxg.

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Kaempferia parviflora (Black Galingale) is a medicinal plant in the family Zingiberaceae. It has biological activities, but the bioactive compounds are easily decomposed and poorly soluble. This research has focused on the chemical constituents and bioactivities of the hexane crude extract from K. parviflora rhizomes for nanotechnology. The K. parviflora rhizomes were extracted with hexane by the maceration. The crude extract 39.99 g was obtained and purified using column chromatography to give four pure compounds, namely (1) 5-hydroxy-3,7-dimethoxyflavone, (2) 5-hydroxy-7-methoxyflavone, (3)
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Saito, N., and H. Sakamoto. "Electrochemical Study of Crevice Environment in High-Temperature Water - Corrosion Potential and pH Measurement." In CORROSION 1994. NACE International, 1994. https://doi.org/10.5006/c1994-94233.

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Abstract High-temperature pH was measured with zirconia membrane electrode with crevice-forming sheath in high purity water. The crevice pH was substantially lower than that of bulk water. Corrosion potential was measured in crevice and on free surface in high-temperature, high-purity water with Type 304 stainless steel (SS), Alloy 600 and their Cr-depleted model alloys. The crevice corrosion potential was 300 to 400 mV lower than that of free surface. The coupling current was observed from free surface cathode to crevice anode. The surface films formed in crevice and on free surface were char
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Berge, J. Philippe. "Corrosion of Power Plants Components in the Presence of Sulfur and Chloride Compounds." In CORROSION 1985. NACE International, 1985. https://doi.org/10.5006/c1985-85111.

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Abstract Several examples of failures of components in nuclear or conventional power plants are described. All have their origin in localized corrosion, stress corrosion cracking or pitting, associated with contamination by chloride or sulfur. The source of contamination has been in some cases identified : lubricants, cleaning agents, ion exchange resins or, even, moisture condensation with sulfur dioxide. In this later case, laboratory studies have made it possible to determine the conditions of pitting and stress corrosion of austenitic stainless steels and alloys. Stringent specifications a
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Kelley, Don, and Michael Jaeger. "Performance of Epoxy Vinyl Ester Resins in Dilute Solvents, Synergistic Effects with HCl." In CORROSION 2007. NACE International, 2007. https://doi.org/10.5006/c2007-07540.

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Abstract The results of exposing Fiber Reinforced Plastics (FRP) coupons made from three different types of corrosion resistant thermosetting resins in several dilute water soluble/miscible organic compounds for up to one year are presented. In addition, the results of a study with four resins in contact with a two-phase aqueous/organic system are discussed. The purpose of these studies was to determine the limits of acceptable performance of FRP based on a range of epoxy vinyl ester resins in solvent containing environments. The first study showed that dilute organic compounds are in general
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Yang, Shanshan, Sonja Richter, Winston Robbins, and Srdjan Nesic. "Evaluation of the Protectiveness of a Paraffin Layer in CO2 Corrosion of Mild Steel." In CORROSION 2012. NACE International, 2012. https://doi.org/10.5006/c2012-01323.

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Abstract Crude oil composition is highly variable and complex. Its components can be broken down into four different classes by solubility characteristics such as: saturates, aromatics, resins, and asphaltenes. Within each class are myriad of chemical compounds, and many have the potential to interact with the pipeline wall to confer protection from corrosion. In this work the focus is on saturates, with the the n-paraffins chosen as being most relevant for the purposes of the present study. A representative pure model compound for the n-paraffins used in the experiments is eicosane (C20H42).
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Gu, Ji-Dong, and Yingying Wang. "Degradation of the Plasticizers Orthd-Dimethyl Phthalate Ester by Environmental Bacteria." In CORROSION 2004. NACE International, 2004. https://doi.org/10.5006/c2004-04586.

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Abstract Synthetic organic compounds in polymeric materials can migrate out to the environment and disrupt the endocrine system in organisms, including humans. These compounds can also promote the growth of microorganisms on surfaces of materials. They have been detected in a wide range of environments and their concentration can be as high as 10 g L-1 of phthalic acid and dimethyl phthalate ester (DMPE) in landfill leachate. We initiated an investigation on biodegradability of phthalic acid and DMPE’s. Enrichment cultures of bacteria obtained from activated sludge and mangrove can fully miner
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Brenna, Andrea, Marco Ormellese, and Silvia Beretta. "Efficiency of Organic Compounds as Vcis for the Packaging of Carbon Steel Engine Elements in Automotive." In CORROSION 2020. NACE International, 2020. https://doi.org/10.5006/c2020-15004.

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Abstract Carbon steel elements for motor engine assembly are produced in different companies typically settled far from the assembly plant. As corrosion must be avoided, condition of transportation are of paramount importance. VCIs are used in the packaging, applied of the polymer sheet used to envelop the metallic element of impregnated in the carbon box. In the present paper, the inhibition efficiency of several pure organic substances was studied by potentiodynamic measurements and linear polarization resistance (LPR) tests. Organic substances containing a carboxylic group and/or an aminic
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Gough, M. A., R. A. Mothershaw, and N. E. Byrne. "Molecular Monitoring of Residual Corrosion Inhibitor Actives in Oilfield Fluids: Implications for Inhibitor Performance." In CORROSION 1998. NACE International, 1998. https://doi.org/10.5006/c1998-98033.

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Abstract In recent years a number of significant advances in the molecular monitoring of residual corrosion inhibitors in oilfield fluids have been reported. The techniques used, chromatography and mass spectroscopy, provide molecular specificity with high sensitivity, and allow individual molecules to be tracked at low levels (sub ppm) throughout oil production systems. These analyses have demonstrated for the first time how individual corrosion inhibitor molecules behave in real systems, and the results obtained have shown some interesting phenomena. For example, for a series of quaternary a
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Grzibovskis, Raitis, Aivars Vembris, Armands Sebris, Zigfrids Kapilinskis, and Maris Turks. "Energy level determination of purine containing blue light emitting organic compounds." In Organic Electronics and Photonics: Fundamentals and Devices, edited by Sebastian Reineke and Koen Vandewal. SPIE, 2018. http://dx.doi.org/10.1117/12.2307422.

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Reports on the topic "Purine compounds"

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Phillips, Donald A., Yitzhak Spiegel, and Howard Ferris. Optimizing nematode management by defining natural chemical bases of behavior. United States Department of Agriculture, 2006. http://dx.doi.org/10.32747/2006.7587234.bard.

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This project was based on the hypothesis that nematodes interacting with plants as either parasites or beneficial saprophytes are attracted to their host by natural products. This concept was supported by numerous observations that parasitic nematodes are attracted to root exudates. Our overall goal was to identify nematode sensory compounds from root exudates and to use that information for reducing nematicide applications. We applied skills of the investigators to achieve three specific objectives: 1) Identify nematode behavioral cues (e.g., attractants or repellents) in root exudates; 2) Id
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Rangsunvigit, Pramoch. Silica surface modification by admicellar polymerization with a continuous stirred tank reactor for natural rubber property improvement. Chulalongkorn University, 2006. https://doi.org/10.58837/chula.res.2006.97.

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Mixed surfactants of cationic and nonionic surfactants, cetyltrimethyl ammonium bromide (CTAB) and Triton X-100, were employed in the admicellar polymerization to replace the use of pure CTAB. Effect of the molar ratio of CTAB to Triton X-100 and the adsorption structure of surfactants, monolayer and bilayer, were investigated on the admicellar polymerization compared with the polymerization using only CTAB in terms of the compatibility between rubber and silica. Results indicated that the silica modification by the nonionic surfactant was successfully used to modify rubber compound. The prope
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LOUVAT, Am�lie. PR-306-17600-Z02 Gas Quality Benchmark Manufacturers Survey PII. Pipeline Research Council International, Inc. (PRCI), 2018. http://dx.doi.org/10.55274/r0011528.

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Twenty manufacturers participated to the Gas Quality Benchmark. Answers were given for 15 out of 16 compounds or categories of compounds. Only for "biological agents", no answer was collected. The answers are technical responses from the market to cover the needs and specifications expressed by the gas operators (in Phase 1). Eighteen analyzers were identified as multicomponents analyzers. These analyzers are able to measure from two up to eleven components. Most of them are designed for natural gas analysis. Some manufacturers proposed multicomponents analyzers which are develop for industria
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Steele, W. V., R. D. Chirico, A. Nguyen, I. A. Hossenlopp, and N. K. Smith. Determination of some pure compound ideal-gas enthalpies of formation. Office of Scientific and Technical Information (OSTI), 1989. http://dx.doi.org/10.2172/6020818.

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Hackett, Wesley, Michael Raviv, Anath Das, Oded Reuveni, and Arie Gutman. Detecting Activity of Juvenile Phase-Specific Translocatable Substances that Influence Rooting Potential Using In Vitro Rooting Assays and Expression of a Specific Gene. United States Department of Agriculture, 1998. http://dx.doi.org/10.32747/1998.7613038.bard.

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The objectives of the project for which substantial effort was put forth were to: 1) Verify the relationship between expression of a cDNA clone (HW103) and the rooting potential of reciprocally grafted cuttings of juvenile and mature lamina and petioles of Hedera helix L. 2) Detect rooting promoter fractions in exudates from the juvenile leaves of H. Helix by assaying for rooting with leaf petioles of juvenile and mature plants. 3) Isolate, purify and identify compounds which show activity in assays for rooting potential. Some objectives or aspects of the objectives of the original proposal we
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Bigl, Matthew, Samuel Beal, and Charles Ramsey. Determination of residual low-order detonation particle characteristics from IMX-104 mortar rounds. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/42163.

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The environmental fate and transport of energetic compounds on military training ranges are largely controlled by the particle characteristics of low-order detonations. This study demonstrated a method of command detonation, field sampling, laboratory processing, and analysis techniques for characterizing low-order detonation particles from 60 mm and 81 mm mortar rounds containing the insensitive munition formulation IMX-104. Particles deposited from three rounds of each caliber were comprehensively sampled and characterized for particle size, energetic purity, and morphology. The 60 mm rounds
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Becher, Julie, Samuel Beal, Susan Taylor, Katerina Dontsova, and Dean Wilcox. Photo-transformation of aqueous nitroguanidine and 3-nitro-1,2,4-triazol-5-one : emerging munitions compounds. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/41743.

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Two major components of insensitive munition formulations, nitroguanidine (NQ) and 3-nitro-1,2,4-triazol-5-one (NTO), are highly water soluble and therefore likely to photo-transform while in solution in the environment. The ecotoxicities of NQ and NTO solutions are known to increase with UV exposure, but a detailed accounting of aqueous degradation rates, products, and pathways under different exposure wavelengths is currently lacking. We irradiated aqueous solutions of NQ and NTO over a 32-h period at three ultraviolet wavelengths and analyzed their degradation rates and transformation produ
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Ortega, Yina, and Felipe Salcedo. Transforming agriculture: advancements in compost-biopolymers composites for enhanced sustainability. Universidad de los Andes, 2024. https://doi.org/10.51573/andes.pps.ss.bbb.11.

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In the Cesar Department in Colombia, sustainable agriculture faces critical challenges despite its thriving livestock sector. Extensive cattle ranching and poor soil management worsen soil conditions. Additionally, significant environmental concerns arise from the substantial discharge of wastewater in the dairy processing industry. This study aims to valorize biosolids derived from wastewater during dairy plant disinfection to enhance sustainable livestock production. It explores the use of biosolids as the primary matrix for creating composted compounds and biopolymers for agricultural purpo
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Covavisaruch, Sirijutaratana. Comparison of mechanical behaviors of microwave and thermal cured on SiC whisker-filled polybenzoxazine. Chulalongkorn University, 2006. https://doi.org/10.58837/chula.res.2006.76.

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To investigate the effect of microwave cure and thermal cure in silicon carbide whisker (SiCw) filled in polybenzoxazine (PBZ) composite on its corresponding thermal and mechanical behaviors. SiC whisker is thus, used as a filler of the polybenzoxazine to enhance the microwave absorption capability of the molding compound and to reinforce the material. The experimental results reveal that the benzoxazine resin (BA-a) was hardly cured at a high power of 1 kW for 15 min. However, with a relatively low content at 4% by weight SiCw, the benzoxazine resin was found to be cured relatively well. Ther
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Noga, Edward J., Angelo Colorni, Michael G. Levy, and Ramy Avtalion. Importance of Endobiotics in Defense against Protozoan Ectoparasites of Fish. United States Department of Agriculture, 2003. http://dx.doi.org/10.32747/2003.7586463.bard.

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Infectious disease is one of the most serious causes of economic loss in all sectors of aquaculture. There is a critical need to understand the molecular basis for protection against infectious disease so that safer, more reliable and more cost-effective strategies can be designed for their control. As part of this effort, the major goal of our BARD project was to determine the importance of endobiotics as a defense against protozoan ectoparasites in fish. Endobiotics, or antimicrobial polypeptides, are peptides and small proteins that are increasingly recognized as having a vital role in the
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