Genomes and Genes
Summary: A family of nonmetallic, generally electronegative, elements that form group 17 (formerly group VIIa) of the periodic table.
Publications258 found, 100 shown here
- Halogen bonding: the sigma-hole. Proceedings of "Modeling interactions in biomolecules II", Prague, September 5th-9th, 2005Timothy Clark
Computer Chemie Centrum, Friedrich Alexander Universitat Erlangen Nurnberg, Nägelsbachstr 25, 91052, Erlangen, Germany
J Mol Model 13:291-6. 2007..Thus a sigma-hole is observed for the Cl in CF(3)Cl, but not in CH(3)Cl...
- Halogen bonding in solutionMáté Erdélyi
Department of Chemistry and Molecular Biology, University of Gothenburg, Kemivagen 10, SE 41296 Gothenburg, Sweden
Chem Soc Rev 41:3547-57. 2012Halogen bonding is the electron density donation based weak interaction of halogens with Lewis bases...
- Halogen bond and its counterparts: Bent's rule explains the formation of nonbonding interactionsSławomir J Grabowski
Faculty of Chemistry, University of the Basque Country UPV EHU, and Donostia International Physics Center DIPC, Donostia, Euskadi, Spain
J Phys Chem A 115:12340-7. 2011..Numerous analogies between the halogen bond and the hydrogen bond are analyzed and various relationships between energetic, geometrical and the natural bond orbitals method (NBO) parameters are shown...
- Nonbonding interactions of organic halogens in biological systems: implications for drug discovery and biomolecular designYunxiang Lu
Drug Discovery and Design Center, Shanghai Institute of Materia Medica, Chinese Academy of Science, Shanghai 201203, China
Phys Chem Chem Phys 12:4543-51. 2010..In this Perspective, we concentrate on nonbonding interactions of halogens from both crystallographic data and theoretical viewpoints...
- Do traditional, chlorine-shared, and ion-pair halogen bonds exist? An ab initio investigation of FCl:CNX complexesJanet E Del Bene
Department of Chemistry, Youngstown State University, Youngstown, Ohio 44555, USA
J Phys Chem A 114:12958-62. 2010..Coupling constants across halogen bonds are compared with corresponding coupling constants across traditional, proton-shared, and ion-pair hydrogen bonds...
- Expansion of the sigma-hole conceptJane S Murray
Department of Chemistry, University of New Orleans, New Orleans, LA 70148, USA
J Mol Model 15:723-9. 2009..2) It is possible for the bonding orbital to be doubly-occupied and forming a coordinate covalent bond...
- Determination of phosphorus, sulfur and the halogens using high-temperature molecular absorption spectrometry in flames and furnaces--A reviewBernhard Welz
Departamento de Quimica, Universidade Federal de Santa Catarina, 88040 900 Florianopolis, SC, Brazil
Anal Chim Acta 647:137-48. 2009The literature about the investigation of molecular spectra of phosphorus, sulfur and the halogens in flames and furnaces, and the use of these spectra for the determination of these non-metals has been reviewed...
- Exploring the chemistry and biology of vanadium-dependent haloperoxidasesJaclyn M Winter
Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California at San Diego, La Jolla, California 92093, USA
J Biol Chem 284:18577-81. 2009....
- Biological halogenation has moved far beyond haloperoxidasesKarl Heinz van Pee
Biochemie, Technische Universitat Dresden, D 01062 Dresden, Germany
Adv Appl Microbiol 59:127-57. 2006
- Halogenation strategies in natural product biosynthesisChristopher S Neumann
Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, 240 Longwood Avenue, Boston, MA 02115, USA
Chem Biol 15:99-109. 2008..In this article, we review the current state of knowledge regarding the mechanisms of these transformations, highlight applications of this knowledge, and propose future opportunities and challenges for the field...
- Molecular mechanisms of enzyme-catalysed halogenationJ L Ross Anderson
School of Chemistry, University of Edinburgh, West Mains Road, Edinburgh, UK
Mol Biosyst 2:350-7. 2006..In addition, we will consider how this chemistry might be harnessed and developed to produce novel enzymatic activity...
- Structure and mechanism of bacterial dehalogenases: different ways to cleave a carbon-halogen bondRené M de Jong
Department of Biophysical Chemistry, University of Groningen, Nijenborgh 4, NL 9747 AG Groningen, The Netherlands
Curr Opin Struct Biol 13:722-30. 2003..The available information on the various dehalogenases supports different views on the possible evolutionary origins of their activities...
- Utilization of halogen bond in lead optimization: a case study of rational design of potent phosphodiesterase type 5 (PDE5) inhibitorsZhijian Xu
State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
J Med Chem 54:5607-11. 2011..Our X-ray crystal structures verified the existence of the predicted halogen bonds, demonstrating that the halogen bond is an applicable tool in drug design and should be routinely considered in lead optimization...
- X-ray structure determination of a vanadium-dependent haloperoxidase from Ascophyllum nodosum at 2.0 A resolutionM Weyand
Department of Molecular Structure Research, GBF Gesellschaft für Biotechnologische Forschung, Mascheroder Weg 1, Braunschweig, D 38124, Germany
J Mol Biol 293:595-611. 1999....
- Modification of halogen specificity of a vanadium-dependent bromoperoxidaseTakashi Ohshiro
Department of Biotechnology, Tottori University, Japan
Protein Sci 13:1566-71. 2004..These results supported the existence of a specific halogen binding site within the catalytic cleft of vanadium haloperoxidases...
- Nature's inventory of halogenation catalysts: oxidative strategies predominateFrederic H Vaillancourt
Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, 240 Longwood Avenue, Boston, Massachusetts 02115, USA
Chem Rev 106:3364-78. 2006
- Impact of cytosine 5-halogens on the interaction of DNA with restriction endonucleases and methyltransferaseVictoria Valinluck
Department of Biochemistry and Microbiology, School of Medicine, Loma Linda University, Loma Linda, California 92350, USA
Chem Res Toxicol 19:556-62. 2006..a series of oligonucleotides containing cytosine and a series of 5-substituted cytosine analogues including all halogens. This set of oligonucleotides has been used to probe the relationship between the size of the substituent and its ..
- Mechanistic considerations of halogenating enzymesAlison Butler
Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, USA
Nature 460:848-54. 2009....
- Halogen bonding--a novel interaction for rational drug design?Yunxiang Lu
Drug Discovery and Design Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
J Med Chem 52:2854-62. 2009..This study would help to establish such interaction as a potential and effective tool in the context of drug design...
- Do microbial numbers count? Quantifying the regulation of biogeochemical fluxes by population size and cellular activityWilfred F M Röling
Department of Molecular Cell Physiology, Faculty of Earth and Life Sciences, Vrije Universiteit, De Boelelaan, Amsterdam, The Netherlands
FEMS Microbiol Ecol 62:202-10. 2007..Its application is discussed in the context of the complexity of microbial communities (e.g. functional redundancy) and their functioning...
- Experimental measurement of noncovalent interactions between halogens and aromatic ringsHarry Adams
Centre for Chemical Biology, Krebs Institute for Biomolecular Science, Department of Chemistry, University of Sheffield, Sheffield, S3 7HF, UK
Chembiochem 5:657-65. 2004Chemical double mutant cycles have been used to quantify the interactions of halogens with the faces of aromatic rings in chloroform...
- Halogen bonding at the active sites of human cathepsin L and MEK1 kinase: efficient interactions in different environmentsLeo A Hardegger
Laboratorium fur Organische Chemie, ETH Zurich, Wolfgang Pauli Strasse 10, HCI, 8093 Zurich, Switzerland
ChemMedChem 6:2048-54. 2011..affinities were found to strongly increase when an aryl ring of the inhibitors is substituted with the larger halogens Cl, Br, and I, but to decrease upon F substitution...
- Shrinkage behavior of a resin-based composite irradiated with modern curing unitsNicoleta Ilie
Department of Restorative Dentistry, Dental School of the Ludwig Maximilians University, Goethestr 70, Munich 80336, Germany
Dent Mater 21:483-9. 2005....
- Effect of led light curing on the marginal sealing of composite resin restorationsLuis Guilherme Sensi
Department of Operative Dentistry, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil
Pract Proced Aesthet Dent 18:345-51; quiz 352. 2006..Variation of the light-curing unit (quartz tungsten halogen or LED) did not result in discernible differences in the marginal sealing of composite restorations...
- Microleakage beneath ceramic and metal brackets photopolymerized with LED or conventional light curing unitsSerdar Arikan
Osmanli Dis Hastanesi, Conservative Dentistry, Ankara, Turkey
Angle Orthod 76:1035-40. 2006....
- Effect of light dispersion of LED curing lights on resin composite polymerizationKraig S Vandewalle
Dental Materials and Testing, USAF Dental Investigation Service, Great Lakes, IL 60088, USA
J Esthet Restor Dent 17:244-54; discussion 254-5. 2005..This study evaluated the effect of light dispersion of halogen and LED curing lights on resin composite polymerization...
- Effectiveness of second-generation light-emitting diode (LED) light curing unitsUlisses Bastos Campregher
Department of Conservative Dentistry, Federal University of Rio Grande do Sul, Porto Algere, Rio Grande do Sul, Brazil
J Contemp Dent Pract 8:35-42. 2007....
- Effect of high intensity vs. soft-start halogen irradiation on light-cured resin-based composites. Part II: Hardness and solubilityNorbert Hofmann
Department of Operative Dentistry and Periodontology, Julius Maximilians University of Wurzburg, Pleicherwall 2, D 97070 Wurzburg, Germany
Am J Dent 17:38-42. 2004..To determine hardness and solubility of light-cured resin-based composites after high intensity vs. soft-start quartz tungsten halogen irradiation...
- Polymerisation characteristics of resin composites polymerised with different curing unitsGholamreza Danesh
Westfalische Wilhelms Universitat, Poliklinik für Zahnerhaltung, Waldeyerstr 30, D 48149 Munster, Germany
J Dent 32:479-88. 2004..The aim of this study was to compare the plasma arc light source Apollo 95E and the conventional halogen lamp Elipar Visio regarding a number of polymerisation characteristics of different resin composites...
- Temperature rise during adhesive and resin composite polymerization with various light curing sourcesBora Ozturk
Department of Restorative Dentistry, Selcuk University, Faculty of Dentistry, Konya, Turkey
Oper Dent 29:325-32. 2004..However, in this study, no temperature rises beneath 1-mm dentin disk exceed the critical 5.6 degrees C value for pulpal health...
- Post-gel shrinkage with different modes of LED and halogen light curing unitsM S Soh
Department of Restorative Dentistry, Faculty of Dentistry, National University of Singapore, Republic of Singapore
Oper Dent 29:317-24. 2004..At all time intervals, post-gel shrinkage associated with continuous light curing mode was significantly higher than the soft-start light curing mode for FL and TL...
- The Knoop hardness of a composite resin polymerized with different curing lights and different modesA Ruya Yazici
Department of Conservative Dentistry, Faculty of Dentistry, Hacettepe University, Ankara, Turkey
J Contemp Dent Pract 8:52-9. 2007..The purpose of this study was to compare the surface hardness of a hybrid composite resin polymerized with different curing lights...
- Visible light curingFred Rueggeberg
Department of Oral Rehabilitation, The Medical College of Georgia, Augusta, GA, USA
J Esthet Restor Dent 17:200-1. 2005
- LED's--future technology in curing scenario?--an in-vitro studyR Vinay Chandra
Department of Conservative Dentistry and Endodontics, Bapuji Dental College, Davangere, India
Indian J Dent Res 14:152-5. 2003..The results showed that in the long run LED's seem to have great potential to achieve a clinically consistent quality of composite cure...
- Color stability of resin matrix restorative materials as a function of the method of light activationRalf Janda
Humboldt University, Medical Faculty Charité, Center of Dentistry, Augustenburger Platz, Berlin, Germany
Eur J Oral Sci 112:280-5. 2004..It may be concluded that the bleaching of composites, ormocers and compomers depends on (i) the used light curing device and (ii) the chosen curing times. The tungsten halogen light provided highly significantly superior results...
- Comparison of PAC and QTH light sources on polymerization of resin compositesNobuhiro Katahira
Toranomon Hospital Dental Clinic 2 2 2, Toranomon, Minato ku, Tokyo, 105 8470, Japan
Am J Dent 17:113-7. 2004..To evaluate the polymerization shrinkage, Knoop hardness number (KHN) and compressive strength and to suggest a suitable time for irradiating resin composite restorations, when using a high-intensity light source...
- Orthodontic bracket shear bond strengths produced by two high-power light-emitting diode modes and halogen lightHakan Turkkahraman
Department of Orthodontics, Faculty of Dentistry, University of Suleyman Demirel, Cunur, Isparta, Turkey
Angle Orthod 75:854-7. 2005..14 +/- 5.75 MPa) and the halogen group (17.38 +/- 5.41 MPa) (P > .05). The LED is effective for bonding metal brackets to teeth, and the soft-start mode gives higher bond strengths than the fast mode...
- Hardening of dual-cure resin cements and a resin composite restorative cured with QTH and LED curing unitsGildo Coelho Santos
Department of Operative Dentistry, University of Bahia, School of Dentistry, Salvador, BA, Brazil
J Can Dent Assoc 70:323-8. 2004..The aim of this study was to determine the effects of light intensity and type of light unit (quartztungsten-halogen [QTH] or light-emitting diode [LED]) on the hardening of various resin cements and a resin composite restorative...
- A comparison of tungsten-quartz-halogen, plasma arc and light-emitting diode light sources for the polymerization of an orthodontic adhesiveBikram S Thind
Department of Orthodontics and Restorative Dentistry, Glenfield Hospital, Leicester, UK
Eur J Orthod 28:78-82. 2006..Polymerization, as effective as that produced by conventional bulb light sources, was obtained with the short exposure times recommended for the plasma arc or light-emitting diode sources...
- Reducing, by pulse width modulation, the curing temperature of a prototype high-power LED light curing unitTa Ko Huang
TSAI Graduate Institute of Dental Science, Chung Ho Memorial Hospital, Kaohsiung Medical University, 100 Tzyou 1st Road, Kaohsiung 807, Taiwan, Republic of China
Dent Mater J 25:309-15. 2006..2 degrees C and an irradiance of 1,194 +/- 1 mW/cm2. Based on the results of the present study, it was shown that PWM technology reduced the curing temperature while retaining the polymerization effectiveness of a high-power LED LCU...
- The degree of conversion of fiber-reinforced composites polymerized using different light-curing sourcesS Uctasli
Faculty of Dentistry, Suleyman Demirel University, Isparta, Turkey
Dent Mater 21:469-75. 2005..In addition, the effect of different types of light-curing units and durations of light irradiation on the degree of conversion was evaluated...
- Effect of reduced exposure times on the microhardness of 10 resin composites cured by high-power LED and QTH curing lightsCorey A Felix
Dalhousie University, Halifax, Nova Scotia
J Can Dent Assoc 72:147. 2006..To compare the effect of reduced exposure times on the microhardness of resin composites cured with a "second-generation" light-emitting diode (LED) curing light and a quartz-tungsten-halogen (QTH) curing light...
- Influence of photopolymerization light source on enamel shear bond strength after bleachingSandro Cordeiro Loretto
Department of Restorative Dentistry, Faculty of Dentistry of Pernambuco, UPE, Camaragibe, PE, Brazil
Braz Dent J 15:133-7. 2004..It was therefore possible to conclude that neither enamel bleaching nor the photopolymerization source used had any influence on enamel shear bond strength...
- A new laboratory polymerizing apparatus equipped with halogen and metal halide light sourcesNaomi Tanoue
Department of Specialized Dentistry, Nagasaki University Hospital of Medicine and Dentistry, 1 7 1, Sakamoto, Nagasaki 852 8588, Japan
Dent Mater J 24:43-8. 2005..05) among the curing units and polymerization modes. In conclusion, the M3 unit was found to be well suited to polymerizing the composite material tested...
- Surface microhardness of a resin composite: a comparison of a tungsten halogen and a LED light curing unit, in vitroNoel J Ray
Department of Restorative Dentistry, National University of Ireland, Cork
Eur J Prosthodont Restor Dent 14:7-12. 2006..Immediate finishing (1 h) was more appropriate to the use of the LED LCU (with adequate exposure time). The effect of elapsed time after exposure on microhardness was more pronounced with the QTH LCU...
- Evaluation of a dual peak third generation LED curing lightRichard B T Price
Department of Dental Clinical Sciences, Dalhousie University, Halifax, Nova Scotia, Canada
Compend Contin Educ Dent 26:331-2, 334, 336-8 passim; quiz 348. 2005..001). It was concluded that overall the UltraLume 5 dual peak third generation LED curing light was able to polymerize these 5 resin composites as well as or better than the other curing lights...
- The effect of different light-curing units on fatigue behavior and degree of conversion of a resin compositeUlrich Lohbauer
Policlinic for Operative Dentistry and Periodontology, University of Erlangen Nuremberg, Gluckstrasse 11, D 91054 Erlangen, Germany
Dent Mater 21:608-15. 2005..The aim of this study was to investigate the effect of different light-curing units and irradiation modes on the mechanical fatigue strength and degree of conversion of a restorative resin composite...
- Evaluation of curing performance of light-emitting polymerization unitsBarry M Owens
Department of Restorative Dentistry, University of Tennessee, Memphis, USA
Gen Dent 54:17-20. 2006..Dentists should be aware that LED curing units offer portability, reduced heat production, and more consistent intensity output per life of the unit...
- Time dependence of composite shrinkage using halogen and LED light curingAlexander Uhl
Friedrich Schiller University Jena, Institute of Materials Science and Technology IMT, Löbdergraben 32, D 07743 Jena, Germany
Dent Mater 21:278-86. 2005....
- Microhardness and Young's modulus of a bonding resin cured with different curing unitsMonica Yamauti
Section of Cariology and Operative Dentistry, Department of Restorative Sciences, Graduate School, Faculty of Dentistry, Tokyo Medical and Dental University, 5 45 Yushima, 1 chome, Bunkyo ku, Tokyo 113 5489, Japan
Dent Mater J 23:457-66. 2004..Increasing the distance between the curing unit tip and the irradiated surface decreased the hardness and Young's modulus of SE...
- Effect of light-tip distance on the shear bond strengths of resin-modified glass ionomer cured with high-intensity halogen, light-emitting diode, and plasma arc lightsMaria Francesca Sfondrini
Department of Orthodontics, University of Pavia, Pavia, Italy
Am J Orthod Dentofacial Orthop 129:541-6. 2006..The purpose of this study was to assess the effect of light-tip distance on the shear bond strength and the failure site of brackets cured with 3 light-curing units (high-intensity halogen, light-emitting diode, and plasma arc)...
- Effect of radiation light characteristics on surface hardness of paint-on resin for shade modificationHiroyuki Arikawa
Department of Biomaterials Science, Graduate School of Medical and Dental Sciences, Kagoshima University, Japan
Dent Mater J 24:636-41. 2005..Our results indicated that the polymerization efficiency of paint-on resin was significantly influenced by the radiation light characteristics of clinical light-curing units...
- Prerequisites for proper curingC Strydom
Restorative Dentistry, University of the Western Cape
SADJ 60:254-5. 2005..Some basic terminology relating to the power of the light and intensity is explained and calculations are used to illustrate to the reader how the size of the light guide increases or reduces the intensity of the light beam...
- Critical appraisal. Quartz-tungsten-halogen and light-emitting diode curing lightsKraig S Vandewalle
Dental Materials Evaluation and Testing, USAF Dental Evaluation and Consultation Service, Great Lakes, IL, USA
J Esthet Restor Dent 18:161-7. 2006
- Advances in light curing units and curing techniques: a literature reviewG Oberholpez
Department of Operative Dentistry, Faculty of Dentistry, University of Limpopo, Medunsa Campus
SADJ 60:451-4. 2005..This article presents a review of the advances in light curing units and curing techniques, as well as the scientific principles that guided past developments and that will influence future advances...
- Terminology, technology, and troubleshooting: curing lightsVictoria L Wallace
Ultradent Products, Inc, USA
Dent Assist 74:12, 14-5. 2005
- Influence of curing lights and modes on cross-link density of dental compositesAdrian U J Yap
Department of Restorative Dentistry, Faculty of Dentistry, National University of Singapore, Republic of Singapore
Oper Dent 29:410-5. 2004..For TL, curing with continuous mode resulted in specimens with significantly higher cross-link density than curing with the soft-start mode...
- Effect of photoactivation systems and resin composites on the microleakage of esthetic restorationsLarissa Maria Assad Cavalcante
Clinical Dentistry Program, Department of Restorative Dentistry, School of Dentistry, Unviersity of Campinas, Piracicaba, SP, Brazil
J Contemp Dent Pract 8:70-9. 2007....
- Comparison of halogen, plasma and LED curing unitsRie Nomoto
Department of Dental Engineering, Tsurumi University School of Dental Medicine, Yokohama, Japan
Oper Dent 29:287-94. 2004..Both the plasma arc and LED units required longer irradiation times than those recommended by their respective manufacturers. Clinicians should be aware of potential thermal rise and UV-A hazard when using plasma arc units...
- Curing light technology 2003Scott D Benjamin
Pract Proced Aesthet Dent 15:333-5. 2003
- Microhardness evaluation of resin composites polymerized by three different light sourcesIhsan Hubbezoglu
Department of Endodontics, Faculty of Dentistry, Cumhuriyet University, Sivas, Turkey
Dent Mater J 26:845-53. 2007..Among the materials tested, the nanofilled resin composite displayed the highest microhardness values for each curing regime...
- The effect of different light-curing methods on temperature changes of dual polymerizing agents cemented to human dentinNadia Malek Taher
Department of Restorative Dental Sciences of the College of Dentistry at King Saud University in Riyadh, Kingdom of Saudi Arabia
J Contemp Dent Pract 9:57-64. 2008..This in vitro study aims to measure the temperature changes of resin luting cements cemented to human dentin when using different light curing systems for photo-activation...
- Comparison of the heat generation of light curing unitsBora Bagis
Department of Prosthetic Dentistry of the Faculty of Dentistry at Karadeniz Technical University in Trabzon, Turkey
J Contemp Dent Pract 9:65-72. 2008..The aim of this study was to evaluate the heat generation of three different types of light curing units...
- Sorption and solubility of composites cured with quartz-tungsten halogen and light emitting diode light-curing unitsLuci Regina P Archegas
Technological School at the Federal University of Parana in Curitiba, PR, Brazil
J Contemp Dent Pract 9:73-80. 2008..The objective of this study was to evaluate the effect of light polymerization on water sorption and solubility of hybrid composites...
- Influence of ceramic translucency on curing efficacy of different light-curing unitsAngela Koch
Department of Operative Dentistry and Periodontology, University Clinics, Regensburg, Germany
J Adhes Dent 9:449-62. 2007....
- Effect of irradiation type (LED or QTH) on photo-activated composite shrinkage strain kinetics, temperature rise, and hardnessNorbert Hofmann
Department of Operative Dentistry and Periodontology, Bavarian Julius Maximilians University of Würzburg, Wurzburg, Germany
Eur J Oral Sci 110:471-9. 2002..Ramp curing decreased contraction speed even more. Shrinkage strain after 60 min was greater following QTH irradiation compared with both LED units (Herculite, Definite) or with the weaker LED light (Z250)...
- Light curing--an updateJohn O Burgess
Operative Dentistry and Biomaterials Department, Louisiana State University School of Dentistry, New Orleans, Louisiana, USA
Compend Contin Educ Dent 23:889-92, 894, 896 passim; quiz 908. 2002..The support for different curing modes (soft, exponential, and pulse delay) to improve marginal integrity and reduce marginal leakage is examined...
- Shedding new light on composite polymerizationW Frank Caughman
Department of Oral Rehabilitation, Medical College of Georgia, Augusta, USA
Oper Dent 27:636-8. 2002..At stake are the durability of restorations, the satisfaction of patient and the well-earned reputation of the operator...
- Comparative efficiency of plasma and halogen light sources on composite micro-hardness in different curing conditionsD Dietschi
Division de Cariologie, d Endodontie et de Pédodontie, Section de Médecine Dentaire, Faculte de Medecine, Universite de Geneve, 19 Rue BarthElemy Menn, 1205 Geneva, Switzerland
Dent Mater 19:493-500. 2003..This study evaluated the effectiveness of a plasma-curing device (Apollo 95 E) and a halogen device (Heliolux DLX), in different curing conditions...
- A study of temperature rise in the pulp chamber during composite polymerization with different light-curing unitsChristopher Millen
Edinburgh Postgraduate Dental Institute, The University of Edinburgh, Edinburgh, UK
J Contemp Dent Pract 8:29-37. 2007..The study compared pulp temperature rise during polymerization of resin-based composites (RBCs) using halogen and LED light-curing units (LCUs)...
- Effectiveness of composite cure associated with different curing modes of LED lightsM S Soh
Department of Restorative Dentistry, Faculty of Dentistry, National University of Singapore, Republic of Singapore
Oper Dent 28:371-7. 2003..Hence, the effectiveness of composite cure with LED LCUs is product dependent...
- Dentin bond strength of composites with self-etching adhesives using LED curing lightsYonca Korkmaz
Department of Conservative Dentistry, Faculty of Dentistry, Hacettepe University, Ankara, Turkey
J Contemp Dent Pract 8:34-42. 2007....
- Curing efficiency of various types of light-curing unitsChris Rahiotis
Biomaterials Laboratory, University of Athens, Greece
Eur J Oral Sci 112:89-94. 2004..The QTH, operated in exponential mode, resulted in the highest H4/H0 value. The exponential mode of the QTH demonstrated superior performance for the total of the characteristics evaluated...
- The influence of storage and indenter load on the Knoop hardness of dental composites polymerized with LED and halogen technologiesAlexander Uhl
Institute of Materials Science and Technology IMT, Friedrich Schiller University Jena, Löbdergraben 32, Jena D 07743, Germany
Dent Mater 20:21-8. 2004..Therefore, this study investigated the post-curing process, to ascertain if it can compensate for the lower mechanical properties of composites polymerized with LED LCUs...
- Depth of cure and hardness of an indirect composite polymerized with three laboratory curing unitsNaomi Tanoue
Department of Specialized Dentistry, Nagasaki University Hospital of Medicine and Dentistry, Japan
J Oral Sci 49:25-9. 2007..2 KHN). Of the three units, the halogen-fluorescent unit exhibited the lowest depth of cure. Both the hardness and curing depth of the composite were influenced by the laboratory polymerizing units employed...
- Revisiting the intensity output of curing lights in private dental officesNasser Barghi
Department of Restorative Dentistry, University of Texas Health Science Center, San Antonio, Texas, USA
Compend Contin Educ Dent 28:380-4; quiz 385-6. 2007..4%), and heavy (13.7%). A comparison of the results of this study with the 1994 survey report shows an overall improvement in the intensity output in dental offices. LED and PAC lights constituted 21.2% of curing lights in this survey...
- Evaluation of a second-generation LED curing lightRichard B T Price
Department of Dental Clinical Sciences, Dalhousie University, Halifax, Nova Scotia
J Can Dent Assoc 69:666. 2003..Light-emitting diode (LED) curing lights offer advantages over quartz-tungsten-halogen (QTH) lights, but the first-generation LED lights had some disadvantages...
- Effect of light curing modes and light curing time on the microhardness of a hybrid composite resinFlavio Henrique Baggio Aguiar
Department of Restorative Dentistry, Piracicaba School of Dentistry, Campinas State University, Sao Paulo, Brazil
J Contemp Dent Pract 8:1-8. 2007..The aim of this in vitro study was to evaluate the influence of light curing modes and curing time on the microhardness of a hybrid composite resin...
- Effect of exposure time on curing efficiency of polymerizing units equipped with light-emitting diodesJosé R David
Department of Dentistry, School of Dentistry, University of Ponta Grossa, Campus Uvaranas, Brazil
J Oral Sci 49:19-24. 2007..An exposure time of 40 sec is required to provide composites with a uniform and high Knoop hardness when LED light-curing units are employed...
- The influence of temperature on the efficacy of polymerization of composite resinWedad Y Awliya
Department of Restorative Dental Science, Collage of Dentistry, King Saud University, Riyadh, Saudi Arabia
J Contemp Dent Pract 8:9-16. 2007..The purpose of this study was to investigate the effect of different temperatures on the efficacy of polymerization during the insertion of composite resin using different light curing units...
- The comet assay with multiple mouse organs: comparison of comet assay results and carcinogenicity with 208 chemicals selected from the IARC monographs and U.S. NTP Carcinogenicity DatabaseY F Sasaki
Laboratory of Genotoxicity, Faculty of Chemical and Biological Engineering, Hachinohe National College of Technology, Hachinohe, Aomori, Japan
Crit Rev Toxicol 30:629-799. 2000..agents, amides, aromatic amines, azo compounds, cyclic nitro compounds, hydrazines, halides having reactive halogens, and polycyclic aromatic hydrocarbons were chemicals showing high positive effects in this assay...
- Sense or no-sense of the sum parameter for water soluble "adsorbable organic halogens" (AOX) and "absorbed organic halogens" (AOX-S18) for the assessment of organohalogens in sludges and sedimentsGerman Müller
Institute of Environmental Geochemistry, University of Heidelberg Im Neuenheimer Feld 236, D 69120 Heidelberg, Germany
Chemosphere 52:371-9. 2003AOX" is the abbreviation of the sum parameter for water soluble "adsorbable organic halogens" in which 'A' stands for adsorbable, 'O' for organic and 'X' for the halogens chlorine, bromine and iodine...
- Decomposition of energetic chemicals contaminated with iron or stainless steelSima Chervin
Eastman Kodak Company, Rochester, NY 14652 6270, USA
J Hazard Mater 130:48-52. 2006..The following non-energetic groups were investigated for contributing effects: halogens, hydroxyls, amines, amides, nitriles, sulfonic acid esters, carbonyl halides and salts of hydrochloric acid...
- Phytotoxicity tests of solid wastes and contaminated soils in the Czech RepublicVladimir Koci
Department of Environmental Chemistry, ICT Prague, Czech Republic
Environ Sci Pollut Res Int 17:611-23. 2010..Ten different representative types of contaminated soils and solid waste samples were chosen from the Czech Republic...
- Toxicity of fire smokeYves Alarie
Department of Environmental and Occupational Health, Graduate School of Public Health, University of Pittsburgh, PA 15261, USA
Crit Rev Toxicol 32:259-89. 2002..Many contain nitrogen or halogens, resulting in the release of hydrogen cyanide and inorganic acids in fire smoke as additional toxic threats...
- Chemoselective Synthesis of Substituted Imines, Secondary Amines, and beta-Amino Carbonyl Compounds from Nitroaromatics through Cascade Reactions on Gold CatalystsLaura L Santos
, , Avda de los Naranjos, 46022, Valencia Spain, Fax 34 963 877 809
Chemistry 15:8196-203. 2009..The process is shown to be highly selective towards other competing groups, such as double bonds, carbonyls, halogens, nitriles, or cinnamates, and thereby allows the synthesis of different substituted nitrogenated compounds...
- Formation of chlorinated disinfection by-products in viticultureJan Bernd Barhorst
Institute for AgroEcology IfA, RLP AgroScience GmbH, 67435 Neustadt Weinstrasse, Germany
Environ Sci Pollut Res Int 16:582-9. 2009..These disinfection by-products (DBPs) can be quantified as group parameter 'adsorbable organic halogens' (AOX) and have not been determined in effluents of viticulture yet...
- pKa prediction from an ab initio bond length: part 3--benzoic acids and anilinesA P Harding
Manchester Interdisciplinary Biocentre MIB, Manchester, UK
Phys Chem Chem Phys 13:11283-93. 2011..g. halogens, hydroxy) ortho substituent...
- Synthesis, evaluation and structure-activity relationships of 5-alkyl-2,3-dihydroimidazo[1,2-c] quinazoline, 2,3-dihydroimidazo[1,2-c]quinazolin-5(6H)-thiones and their oxo-analogues as new potential bronchodilatorsR H Bahekar
Medicinal Chemistry Division, University College of Pharmaceutical Sciences, Kakatiya University, Warangal, A P, India
Arzneimittelforschung 51:284-92. 2001..The presence of halogens altered the biological activity in both the series...
- Solar photolysis kinetics of disinfection byproductsBaiyang Chen
Chinese Environmental Scholars and Professionals Network, 11900 Stonehollow Drive, Apartment 338, Austin, TX 78758, USA
Water Res 44:3401-9. 2010..Compounds containing a high degree of halogenation (e.g., three halogens) were usually less stable than less halogenated species (e.g., those with two halogens)...
- Characterization of lysosomal monoiodotyrosine transport in rat thyroid cells. Evidence for transport by system hH C Andersson
Section on Human Biochemical Genetics, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland 20892
J Biol Chem 265:10950-4. 1990..Ring-substituted halogens, regardless of mass or ring position, but not amino, nitro, hydroxy, or methoxy groups, enhanced carrier ..
- A highly versatile catalyst system for the cross-coupling of aryl chlorides and aminesRylan J Lundgren
Department of Chemistry, Dalhousie University, Nova Scotia B3H 4J3 Canada
Chemistry 16:1983-91. 2010..as substituents enolizable ketones, ethers, esters, carboxylic acids, phenols, alcohols, olefins, amides, and halogens, to a diverse range of amine and related substrates that includes primary alkyl- and arylamines, cyclic and ..
- Bromine in waste incineration: partitioning and influence on metal volatilisationJürgen Vehlow
Forschungszentrum Karlsruhe GmbH, Institute for Technical Chemistry, Karlsruhe, Germany
Environ Sci Pollut Res Int 10:329-34. 2003..It may have similar implications like Cl for the volatilisation of heavy metals and the formation of low volatile organic compounds. Due to its lower oxidation potential, there is a risk of formation of elementary Br2 in the offgas...
- Evaluation of sample preparation methods for elastomer digestion for further halogens determinationDiogo P Moraes
, Universidade Federal de Santa Maria, 97105 900, Santa Maria, RS, Brazil
Anal Bioanal Chem 397:563-70. 2010..Using MIC, it was possible to digest elastomers with high efficiency, resulting in a single solution suitable for halogen determination by different techniques...
- Decontamination of chemical and biological warfare agents with a single multi-functional materialGabi Amitai
McGowan Institute for Regenerative Medicine, University of Pittsburgh, 450 Technology Drive, Pittsburgh, PA 15219, USA
Biomaterials 31:4417-25. 2010..containing the redox enzymes glucose oxidase and horseradish peroxidase can convert halide ions into active halogens and exert striking bactericidal activity against gram positive and gram negative bacteria...
- Determination of potentially bioaccumulating complex mixtures of organochlorine compounds in wastewater: a reviewM Concepción Contreras López
University of the Basque Country, Faculty of Sciences, Leioa, Bizkaia, Spain
Environ Int 28:751-9. 2003..The existing tests to measure adsorbable organic halogens (AOX) or extractable organic halogens (EOX) do not distinguish the more hydrophobic organic chlorine matter...
- Microwave assisted extraction of iodine and bromine from edible seaweed for inductively coupled plasma-mass spectrometry determinationVanessa Romarís-Hortas
Department of Analytical Chemistry, Nutrition and Bromatology, Faculty of Chemistry, University of Santiago de Compostela, Avenida das Ciencias, S N, 15782 Santiago de Compostela, Spain
Talanta 79:947-52. 2009..When extracting both halogens, results showed statistical significance (confidence interval of 95%) for TMAH volume and temperature, and also ..
- Theoretical studies on the interaction of partial agonists with the 5-HT2A receptorMaria Elena Silva
Institute of Pharmacy, University of Regensburg, 93040, Regensburg, Germany
J Comput Aided Mol Des 25:51-66. 2011..FRA indicates which substructures affect potency or intrinsic activity. The high contribution of halogens in para position of phenethylamines to pEC(50) points to a specific hydrophobic pocket...
- 77Se NMR chemical shifts of 9-(arylselanyl)triptycenes: new standard for planar structures of ArSeR and applications to determine the structures in solutionsTakashi Nakamoto
Department of Material Science and Chemistry, Faculty of Systems Engineering, Wakayama University, 930 Sakaedani, Wakayama 640 8510, Japan
J Org Chem 73:9259-69. 2008..Y = COOEt, CN, and NO(2) (19-37 ppm), relative to Y = H, with small upfield and moderate downfield shifts by Y of halogens (-1 ppm for Y = F and 4 ppm for Y = Cl and Br)...
- Organic halogen removal from chlorinated humic ground water and lake water by nitrifying fluidized-bed biomass characterised by electron microscopy and molecular methodsE Kostyal
Department of Applied Chemistry and Microbiology, University of Helsinki, Finland
Appl Microbiol Biotechnol 50:612-22. 1998..The removal rates of adsorbable organic halogens were 200 micrograms Cl (g VS day)-1 for chlorinated humic ground water and 50 micrograms Cl (g VS day)-1 for ..
- [Synthesis of fluorine compounds based on special properties of fluorine compounds]Itsumaro Kumadaki
Faculty of Pharmaceutical Science, Setsunan University, 45 1 Nagaotoge cho, Hirakata City 573 0101, Japan
Yakugaku Zasshi 126:1059-85. 2006..6) Reaction of halothane, which has a highly acidic hydrogen and two halogens adjacent to the trifluoromethyl group and shows interesting reactivities with various bases and metals to give ..
- Enhanced Membrane Systems for Supplying Quality Drinking WaterAndrew Feiring; Fiscal Year: 2013..Background: Chlorine dioxide and other halogens are routinely used for oxidation...
- Oxidative Stress in Oral StreptococciRobert E Marquis; Fiscal Year: 2010..zinc cations, benzimidazoles or other sulfhydryl-reacting agents, such as allicin, chelators, fluoride and other halogens, transition metal cations and oxidative antimicrobials...
- Synthesis and Study of Minimal Protein Folding Models: Molecular Torsion BalanceCraig S Wilcox; Fiscal Year: 2010..We seek to verify this prediction and quantify the differences. 3) The effects of halogens and the 'halogen bond'on conformation stability in water...
- Total Synthesis of Plocamium Polyhalogenated Monoterpenes, Analogues, and BiologiCarl Vogel; Fiscal Year: 2013..isolated from the red algae Plocamium cartilagineum, featuring several units of unsaturation, as well as multiple halogens, including two contiguous stereogenic chlorine-bearing carbons...
- DEVELOPMENT OF A MARINE ANTI-PLAQUE COMPOUNDTREVOR CASTOR; Fiscal Year: 2000..Marine microorganisms, which can generate compounds that integrate halogens such as chlorine and bromine, can thus be an important resource for the discovery of anti-plaque compounds...
- BACTERIAL DEFENSES AGAINST PHAGOCYTE OXIDATIVE KILLINGJohn Eaton; Fiscal Year: 1990..One important line of attack involves the generation of activated oxygen species and derivatives thereof (such as halogens). These damage various microbial components and aid in destruction of the invading organism...
- The Removal of Disinfection Byoproducts from Water (1000-641)ARJAN GIAYA; Fiscal Year: 2007..following advantages: [unreadable] [unreadable] Municipal treatment facilities can continue to use time-tested halogens as the primary and/or secondary means of disinfection, saving billions of dollars in infrastructure required to ..
- Mechanistic studies of pulmonary toxicity of styreneJiang Zheng; Fiscal Year: 2010..Our preliminary studies showed that para-substituted halogens "amplify" cytotoxicity of styrene...
- HALOGEN FREE ENERGY DATABASE FOR RATIONAL DRUG DESIGNALEXANDER MACKERELL; Fiscal Year: 2000..of chemical substituents to aqueous solvation and lipid solubility and 2) understand the influence of halogens on the conformational and solubility properties of sugars in nucleoside based therapeutic agents...
- STUDIES IN ORGANIC SYNTHESIS. TANDEM ARYNE REACTIONSHAROLD HART; Fiscal Year: 1991..can be used to construct, in a single operation, from one to six new carbon-carbon bonds in place of the halogens, often with functional differentiation of the appended carbon atoms...
- MYELOPEROXIDASE-H202-HALIDE SYSTEM IN GLOMERULAR INJURYRichard Johnson; Fiscal Year: 1991..capillary wall and catalyzes the reaction of H2O2 with a halide (C1, I) to form highly toxic hypohalous acids and halogens. We have now shown that MPO and H2O2 can interact to produce severe glomerular injury and that a similar ..
- Oxidative Coupling in Natural Product SynthesisPhil Baran; Fiscal Year: 2009..There are remarkable advantages to be gained in terms of efficiency (lack of protecting groups, halogens, disposable functional groups), practicality (extremely concise sequences), stereocontrol (complete ..
- NMR HIGH SENSITIVITY MOLECULAR STRUCTURE DETERMINATIONREINHARD DUNKEL; Fiscal Year: 2004..Oxygen, sulfur, and most halogens are not NMR observable. But they influence the shift of surrounding observable atoms...
- Catalytic Processes for Selective Organic SynthesisGARY MOLANDER; Fiscal Year: 2005..4) Carbometalation/cyclization reactions will be explored utilizing organochromium species. 5) Ligands and catalytic systems designed for asymmetric synthesis will be explored. ..
- Agilent 5973 GC/MS SystemGARY MOLANDER; Fiscal Year: 2002..Our current lack of such instrumentation negatively affects the ability to carry out many of these studies. This critical capability, in the form of an instrument for everyday analysis, is urgently needed. ..
- Tandem Cycloaddition Chemistry of 2-AzoniaheterodienesSCOTT DENMARK; Fiscal Year: 2007..abstract_text> ..
- Construction of Alpha-Siloxy-and Alpha-Amino-AmidesROBERT CUNICO; Fiscal Year: 2002..Exploratory experiments directed towards inducing chiral stereoselectivity within these transformations will also be carried out. ..
- New Methods for Stereoselective Addictions to CarbonylsTarek Sammakia; Fiscal Year: 2008..We will explore this catalyst system in the upcoming funding period and delineate its scope and limitations. ..
- Investigations of the Bioinorganic Chemistry of Iron: New SiderophoresAlison Butler; Fiscal Year: 2009..abstract_text> ..
- Cross-Coupling Reactions of OrganosilanolsSCOTT DENMARK; Fiscal Year: 2009..Synthetic approaches to isodomoic acid H, hepatitis C viral inihibiting indole alkaloids, the salicylihalimide macrolactone oximidine II, and polyene antiviral antibiotic viridenomycin are detailed. ..
- Ultraviolet-C Therapy for OnychomycosisMICHAEL HAMBLIN; Fiscal Year: 2006..unreadable] [unreadable] [unreadable]..
- Synthesis of the myrmicarin family of natural productsScott Snyder; Fiscal Year: 2005....
- Student Travel to the Environmental Mutagen SocietyMichael Plewa; Fiscal Year: 2002..Awards will be made without regard to gender, race or ethnicity. ..
- FETAL ALCOHOL SYNDROME: GENETIC STUDIES IN ZEBRAFISHMICHAEL CARVAN; Fiscal Year: 2002..abstract_text> ..
- GENE-NUTRIENT INTERACTIONS IN REDOX HOMEOSTASISRuma Banerjee; Fiscal Year: 2002....
- CHEMISTRY AND BIOLOGY OF INSULIN-LIKE VANADIUM COMPOUNDSDEBBIE CRANS; Fiscal Year: 2003..The proposed studies will lead to an in-depth understanding of both the chemical and pharmacological properties of known and new vanadium compounds inducing insulin-like action. ..
- Student Travel to the Environmental Mutagen SocietyMichael Plewa; Fiscal Year: 2003..Awards will be made without regard to gender, race or ethnicity or disability. ..
- Fostriecin and Related Protein Phosphatase InhibitorsDale Boger; Fiscal Year: 2005....
- Macrophage Targeted Photodynamic TherapyMICHAEL HAMBLIN; Fiscal Year: 2004....
- Student Travel to the Environmental Mutagen SocietyMichael Plewa; Fiscal Year: 2004..Awards will be made without regard to gender, race, ethnicity or disability. ..
- Amination and Etherification of Aryl Halides and OlefinsJohn Hartwig; Fiscal Year: 2008..In addition, we will strive to develop conditions to add other nitrogen substrates to vinylarenes and to add amines to more substituted vinylarenes and simple alkenes. ..
- Metals in biology and Graduate Research SeminarAlison Butler; Fiscal Year: 2004..To ensure the best possible programs, it is important that the cost of participating in the conference not be an impediment to the attendance of the invited speakers and discussion chairs. ..
- NEW DEVELOPMENTS IN ORGANOCOPPER CHEMISTRYR Dieter; Fiscal Year: 2004..The proposed synthetic routes to pyrrolidine aza sugars will develop the potential synthetic power of alpha-aminoalkylcuprate chemistry. ..
- Gordon Research Sponsored Conference on CobalaminsRuma Banerjee; Fiscal Year: 2003....