Filters
Results 1 - 10 of 99686
Results 1 - 10 of 99686.
Search took: 0.059 seconds
Sort by: date | relevance |
Plus, Remi
Commissariat a l'Energie Atomique - CEA, Centre d'Etudes Nucleaires de Saclay, Division de Chimie, Departement de Recherche et Analyse - D.R.A, Section des Recherches et de l'Interaction du Rayonnement avec la Matiere (France); Universite Pierre et Marie Curie - Paris 6 (France)
Commissariat a l'Energie Atomique - CEA, Centre d'Etudes Nucleaires de Saclay, Division de Chimie, Departement de Recherche et Analyse - D.R.A, Section des Recherches et de l'Interaction du Rayonnement avec la Matiere (France); Universite Pierre et Marie Curie - Paris 6 (France)
AbstractAbstract
[en] In the course of chlorophyll investigations by vibrational spectroscopy, the magnesium complex Mg(NH3)6Cl2 was studied by infrared and Raman techniques and two porphyrin molecules, by resonance Raman scattering. For the hexa-ammine magnesium chloride, all vibrations predicted by group theory (internal and external vibrations) were observed; ligand orientations gives- the complex ion a D3d point group symmetry. Five isotopically substituted compounds were studied and a force constant calculation showed that the Mg-N bond has a value higher than most of those calculated for other divalent hexa-ammine metal ions. Two porphyrins were studied: the prophine and the meso-porphyrin IX dimethyl-ester.' Unexpected variations of vibrational bands intensities and depolarization ratios were recorded on changing the excitation wavelength. Three resonance levels were tentatively attributed to the presence of pure electronic transitions in band IV of the absorption spectra of these compounds. (author)
[fr]
Dans le cadre general de l'etude de la chlorophylle par spectroscopie de vibration on etudie d'une part un complexe du magnesium: Mg(NH3)6Cl2 par infrarouge et Raman et d'autre part des porphyrines par Raman de resonance. En, ce qui concerne le chlorure de magnesium hexa-ammine, toutes les vibrations attendues sont observees (vibrations internes et externes); l'orientation des coordinats donne a l'ion Mg(NH3)62+ la symetrie du groupe, D3d. Cinq complexes formes a partir des isotopes D, 26Mg, 15N sont etudies et un calcul de constante de force montre que la liaison Mg-N est parmi les plus fortes comparee a celle d'autres ions divalents hexa-amines. En ce qui concerne les porphyrines, la porphine et l'ester dimethylique de la Mesoporphyrine IX sont etudiees, les intensites relatives et les taux de polarisation de la plupart des bandes observees sont etudiees en fonction de la longueur d'onde d'excitation. Trois transitions electroniques sont mises en evidence dans la bande IV des spectres d'absorption de ces composes. (auteur)Original Title
Etude de complexes du magnesium et de porphyrines par spectroscopie vibrationnelle
Primary Subject
Source
8 Jun 1976; Oct 1976; 116 p; 181 refs.; Available from the INIS Liaison Officer for France, see the 'INIS contacts' section of the INIS website for current contact and E-mail addresses: http://www.iaea.org/inis/Contacts/; These Docteur Es Sciences Physiques
Record Type
Miscellaneous
Literature Type
Thesis/Dissertation
Report Number
Country of publication
ALKALINE EARTH ISOTOPES, ALKALINE EARTH METAL COMPLEXES, CARBOXYLIC ACIDS, COMPLEXES, ENERGY LEVELS, EVEN-EVEN NUCLEI, EXCITED STATES, HETEROCYCLIC ACIDS, HETEROCYCLIC COMPOUNDS, HYDROGEN ISOTOPES, ISOTOPES, LIGHT NUCLEI, MAGNESIUM ISOTOPES, NITROGEN ISOTOPES, NUCLEI, ODD-EVEN NUCLEI, ODD-ODD NUCLEI, ORGANIC ACIDS, ORGANIC COMPOUNDS, ORGANIC NITROGEN COMPOUNDS, SPECTRA, STABLE ISOTOPES
Publication YearPublication Year
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] Keloids in black patients frequently recur after surgical excision alone. Surgical excision followed by iridium 192 brachytherapy was used to treat 783 keloids in 502 black patients in Martinique. The surgical and radiation therapy technique is described in detail. The recurrence rate was 21%, in keeping with earlier studies. Factors influencing the risk of recurrence were the size of the keloid before treatment and complications occurring during or immediately after surgical excision. The data reported here suggest that surgical excision followed by brachytherapy is currently the best available method for treating keloids. (authors)
Original Title
Exerese chirurgicale et curietherapie des cheloides en Martinique
Primary Subject
Record Type
Journal Article
Journal
Country of publication
BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, DAYS LIVING RADIOISOTOPES, ELECTRON CAPTURE RADIOISOTOPES, HEAVY NUCLEI, INTERNAL CONVERSION RADIOISOTOPES, IRIDIUM ISOTOPES, ISOMERIC TRANSITION ISOTOPES, ISOTOPES, MEDICINE, MINUTES LIVING RADIOISOTOPES, NUCLEI, ODD-ODD NUCLEI, THERAPY, YEARS LIVING RADIOISOTOPES
Publication YearPublication Year
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] Calcifications of a sub-ependymal giant cell astrocytoma were not recognized by MR. Therefore a CT scan is recommended before stereotaxic needle biopsy in order to avoid intracerebral hemorrhage. (authors)
Original Title
Calcifications tumorales intracerebrales meconnues en IRM
Primary Subject
Secondary Subject
Source
5 refs.
Record Type
Journal Article
Journal
Country of publication
Publication YearPublication Year
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] As required by the energy transition law for green growth, RTE has prepared and published this Annual Electricity Report to provide a general overview of developments affecting the power system over the previous year. The 2015 edition of the Electricity Report shows that the effects of the energy transition are becoming visible in France: After holding at the same level for three years, power demand rose slightly in a more buoyant economic climate. Adjusted for weather impacts, power consumption in mainland France, excluding the energy sector, increased by 0.5% to 476.3 TWh. Growth was stronger in some industrial sectors, like car manufacturing and metallurgy, while others saw declines. Together with improved energy efficiency, this growth was reflected in consumption by households and SMEs. The weather in France was warm on the whole in 2015, though not as mild as in 2014. Gross consumption in mainland France thus rose 2.2% year-on-year. n Renewable generation capacity continued to grow: the country is now home to more than 10 GW of wind capacity and 6 GW of solar capacity. Wind power covered about 4.5% of domestic demand and solar power 1.6%. Taken together with hydropower, which made a moderate contribution over the year, renewable energy sources covered 18.7% of power demand. The six remaining 250 MW coal-fired plants were taken out of service during the year. All in all, nearly 4 GW of coal-fired generation capacity was decommissioned in France between 2013 and 2015. Thanks to the new method for optimising cross-border exchange capacity (flow-based coupling) and the strengthening of the interconnection between France and Spain, France's exchange balance with neighbouring countries reached 61.7 TWh. This is the third time it has risen above 60 TWh in the past ten years. New demand-side flexibility options continue to be developed. Thanks to tenders on the Balancing Mechanism, RTE had up to 1,900 MW of load shedding capacity ready for activation in 2015, up from 1,200 MW in 2014. Lastly, RTE continues to work to ensure that power is available to all parts of France: it is adapting the grid to accommodate renewable energy sources and enable the pooling of energy produced within the new territorial organisation
Original Title
RTE - Bilan electrique 2015
Primary Subject
Secondary Subject
Source
Jan 2016; 144 p; Available from the INIS Liaison Officer for France, see the 'INIS contacts' section of the INIS web site for current contact and E-mail addresses: http://www.iaea.org/inis/Contacts/
Record Type
Miscellaneous
Literature Type
Numerical Data
Report Number
Country of publication
CAPACITY, ELECTRIC POWER INDUSTRY, ENERGY CONSUMPTION, FOSSIL-FUEL POWER PLANTS, HYDROELECTRIC POWER PLANTS, INTERCONNECTED POWER SYSTEMS, INVESTMENT, LOAD MANAGEMENT, MARKET, POWER DISTRIBUTION SYSTEMS, POWER GENERATION, REGIONAL ANALYSIS, RENEWABLE ENERGY SOURCES, SECTORAL ANALYSIS, SOLAR POWER PLANTS, STATISTICAL DATA, TRADE, WHOLESALE PRICES, WIND POWER PLANTS
Publication YearPublication Year
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Sitt, Bernard
Centre d'etudes de securite internationale et de maitrise des armements - CESIM, 4 bis rue des Patures 75016 Paris (France)
Centre d'etudes de securite internationale et de maitrise des armements - CESIM, 4 bis rue des Patures 75016 Paris (France)
AbstractAbstract
[en] The First Committee of the 67. General Assembly of the United Nations closed its discussion on 7 November. It included its traditional dose of disarmament resolutions: fifty-nine were adopted in all, twenty-nine of which required a vote, with the others being passed by consensus. Fifteen of them were specifically about the multiple facets of nuclear disarmament, but contained nothing new on the subject. However, one of these resolutions is particularly worthy of note given its subject and its novelty. This year the Committee adopted a resolution (A/C.1/67/L.19) that decides to convene, on 26 September 2013, a high-level meeting of all States, organised by the president of the General Assembly with the aim of furthering nuclear disarmament. The resolution, sponsored by Indonesia with the support of the Non-Aligned Movement, was passed with 165 votes in favour, none against and 5 abstentions (USA, France, Israel, the UK, and Ukraine). Such a decision is not just a formal exercise, and translates in concrete terms the mounting pressure on the nuclear powers. It establishes a more restrictive diplomatic timetable, whose legitimacy directly derives from the recommendation inscribed in the Millennium Summit Declaration, following the three-day Millennium Summit in September 2000 that brought together heads of State and government. In addition, the resolution is based on another First Committee resolution (A/C.1/67/L.9), which itself is not new, and which deals with the follow-up to the advisory opinion of the International Court of Justice of July 1996 on the legality of the threat or use of nuclear weapons, or, more simply put, on deterrence. Even whilst admitting that the threat or use of nuclear weapons could be legal 'in an extreme circumstance of self-defence, in which the very survival of a State would be at stake', the Court unanimously acknowledged the existence of 'a general obligation of States to pursue in good faith, and bring to a conclusion, negotiations leading to nuclear disarmament in all its aspects under strict and effective international control'. Resolution L.9, passed with 123 votes in favour, 23 against, and 25 abstentions, thus calls on all States to initiate negotiations on the prohibition and elimination of nuclear weapons. Naturally, the meeting on 26 September 2013 will not witness the beginning of such negotiations, which besides do not fall within the General Assembly's mandate. Yet it will be enlightening to see the substance of the debates and the conclusions arising from them, which will not be able to be limited to merely general recommendations. It will also be interesting to observe the concrete repercussions of the meeting in the fields of disarmament and non-proliferation. We may wager that the Conference on Disarmament, paralysed since 1997, but which remains the sole organ of multilateral negotiation in this field, will once again be stigmatised. Will it continue to be the sounding board for differences of opinion of its member States on nuclear and space issues? Or will we one day witness its revival and the exhumation of its 1995 mandate to negotiate a Cut-Off Treaty? If the meeting in September 2013 were to have that kind of effect, it would be most welcome. (author)
Original Title
La 1ere Commission de l'Assemblee generale des Nations Unies et le desarmement nucleaire: quoi de neuf?
Primary Subject
Source
Nov 2012; 2 p; Available from the INIS Liaison Officer for France, see the 'INIS contacts' section of the INIS website for current contact and E-mail addresses: http://www.iaea.org/inis/Contacts/
Record Type
Miscellaneous
Report Number
Country of publication
Publication YearPublication Year
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
External URLExternal URL
Sitt, Bernard
Centre d'etudes de securite internationale et de maitrise des armements - CESIM, 4 bis rue des Patures 75016 Paris (France)
Centre d'etudes de securite internationale et de maitrise des armements - CESIM, 4 bis rue des Patures 75016 Paris (France)
AbstractAbstract
[en] Two months ago, following North Korea's Unha-3 launch, which put a small satellite into orbit, this publication discussed the possibility of a third North Korean nuclear test. As expected, Pyongyang remained true to its traditional policy of provocation. With carefully calculated timing, it carried out a third nuclear test on 12 February, just hours after Barack Obama's State of the Union address, four days before former leader Kim Jong-il's birthday, and on the eve of the investiture of the new South Korean president on the 25 February. Moreover, the North Korean regime is billing this test as a riposte to the new round of sanctions adopted on by the Security Council on 22 January following the Unha-3 launch in December, as it announced on the 24 January. Yet, aside from the associated posturing, this test confirms, if more confirmation were needed, the North's determination to develop an effective nuclear deterrent. The use of the term miniaturisation is certainly in part a propaganda exercise (can actual miniaturisation be achieved after three nuclear tests, one or two of whose success is highly doubtful?). Nonetheless, North Korea has clearly made progress in developing a nuclear weapon and an intercontinental ballistic missile derived from the Taepodong-2, and has promised to carry out further ballistic launches. Without a doubt, even if the North is a long way from possessing what we would consider an operational nuclear capability, its determination has helped it to make progress, and the country shows no signs of wanting to change course. In light of this fact, what can the international community do beyond existing and future sanctions regimes? Doubtless very little. China, which continues to support the North and which has been known in the past to exert influence on Pyongyang, has expressed its firm displeasure as to the North's activities but appears to have no leverage over Kim Jong-un. The Six-Party talks have little chance of being revived, as North Korean nuclear disarmament is no longer on the table, and the February 2007 agreement has failed to get out of the starting blocks, as has the framework agreed in September 2005 which established the preliminary steps for disarmament and which envisaged, among other elements, the normalisation of diplomatic relations with the United States. Indeed, all the negotiations opened with the North since the mid-1990's have come to nothing, and the United States is in less of a position than ever to undertake a constructive bilateral dialogue that produces tangible results. For its part, the European Union can do no more than adopt further rounds of sanctions. The resilience of the North Korea leadership, heading up a devastated country, in the face of the international community does not cease to amaze. Maintaining China's support is clearly a factor in this respect, since the huge amounts of Chinese aid assures the regime's survival. In the current climate of straining relations between Beijing and Pyongyang, is it not time to change tack with China with regard to North Korea and develop a fresh approach? (author)
Original Title
Troisieme essai nucleaire de la Coree du Nord: ou en est Pyongyang?
Primary Subject
Source
Feb 2013; 2 p; Available from the INIS Liaison Officer for France, see the 'INIS contacts' section of the INIS website for current contact and E-mail addresses: http://www.iaea.org/inis/Contacts/
Record Type
Miscellaneous
Report Number
Country of publication
Publication YearPublication Year
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Signogneau, A.
Ecole Nationale Superieure des Mines, 75 - Paris (France); Paris-7 Univ., 75 (France)
Ecole Nationale Superieure des Mines, 75 - Paris (France); Paris-7 Univ., 75 (France)
AbstractAbstract
[en] The goal of this thesis is to analyse how the academic domain of a research entity can be defined by a panel of scientific journals. The aim of this work is to contribute to the creation of information tools as a help in research management. The first part gives an analysis of the scientific journals as markers of the scientific development: the production and diffusion of scientific journals and their ''scientometrical'' analysis (references, citation reports, citation indexes etc..). In the second part, a research unit is analyzed according to its related scientific journals and to its research domain. The SPAM (Photons, Atoms and Molecules Service) of the CEA was chosen for this task (main journals and co-publications network, specialization, main topics, collaborations and competition). The OST (Observatory of Sciences and Techniques) has in charge the production of scientific and technical indicators for research operators. The third part evaluates the methods used by the OST (analyses of reviews and journals) to provide a documentary corpus, taking the topic of the environment as an example. Finally the relevance of the information products obtained is evaluated. (J.S.)
Original Title
Approche scientometrique de la definition d'un domaine de recherche par des revues scientifiques
Primary Subject
Secondary Subject
Source
22 Nov 1995; 275 p; These (D. es Sc.).
Record Type
Report
Literature Type
Thesis/Dissertation
Report Number
Country of publication
Publication YearPublication Year
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Zbinden, M.
Electricite de France (EDF), 92 - Clamart (France). Direction des Etudes et Recherches
Electricite de France (EDF), 92 - Clamart (France). Direction des Etudes et Recherches
AbstractAbstract
[en] The wear of RCCAs and of RCC guide tubes is due to two quite different mechanisms and the remedies to apply for each case might lead to contradictory solutions: - the impact/sliding wear for the seldom moving RCCAs, namely the shutdown RCCAs, under flow-induced vibrations, - the axial sliding wear for the control rods subjected to the stepping movements ordered by the acting load. In this case the hydraulic sticking forces are those which produce an evolution of the surface states that may increase the drop time. The introduction, an historical survey of the encountered difficulties, is followed by short description of the components and then the paper presents contributions of EDF in the R and D field, which take place in two successive multi-annual projects. Lastly, some information is given about the recent evolutions and new problems as well for impact/sliding wear as for drop time under normal or seismic conditions. (author)
Original Title
Grappes de commande et guides de grappes: usure et tempes de chute
Primary Subject
Source
1997; 17 p; ISSN 1161-0611; 

Record Type
Report
Report Number
Country of publication
Publication YearPublication Year
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Fackir, L.
Universite Moulay Ismail, Faculte des Sciences de Meknes, Meknes (Morocco)
Universite Moulay Ismail, Faculte des Sciences de Meknes, Meknes (Morocco)
AbstractAbstract
[en] The biological action of vitamin K may involve mono electronic exchanges. Therefore, in this work we achieved a radiolytical study on one land, of mono electronic reduction of vitamin K hydroquinone symbolized by KHsubn pp. We also studied the vitamin K2 model of glutamic residue( B - Glu ) by radiolytic mean. The study of radical mechanisms of vitamin K1 reduction in ethanolic solution showed that vitamin K1 is a good sensor of free radicals alpha - hydroxyethyles ( R sup . ) issued from the radiolysis of vitamin K1 ethanolic solutions, saturated with N sub2 O. The final product is hydroquinone K sub 1 H sub 2. It has been demonstrated that mono electronic reduction can be also initiated by solvated electrons. The mono electronic oxidation of K H sub p has been studied in ethanolic solution.The results showed that K H sub p is a good sensor of peroxyl radicals model (RO sub2) sup . issues from ethanol. The oxidation leads to the formation a dimeric from of the quinone K. All these results showed that the free radicals R sup . centred on carbon are efficient reducing agents of vitamin K1, and that the peroxyl radicals R Osub2 centred on oxygen are possible oxidants of KH sub p. At the end and for modeling the eventual interaction of semi quinonic radical with glutamic acid. We have irradiated mixture of vitamin K1 and a compound having a glutamic residue, the concentration ratio (B-Glu) sub 0/ (K sub 1) sub 0 varying for 0,03 to 1. The obtained results showed that the yield of vitamin K sub 1 disappearance is superior to G (R sup .)/R for low concentration of B-Glu. 80 figs., 5 tabs., 105 refs. (F. M.)
Original Title
Radioreduction de la vitamine K en solution ethanolique: Contribution a l'etude de l'oxydation radicalaire d'un residu glutamique
Source
1995; 118 p; These ( Doctorat d'Etat Es-Sciences Physiques ).
Record Type
Miscellaneous
Literature Type
Numerical Data
Report Number
Country of publication
ALCOHOLS, AMINO ACIDS, AROMATICS, BLOOD COAGULATION FACTORS, CARBOXYLIC ACIDS, CHEMICAL RADIATION EFFECTS, CHEMICAL REACTIONS, COAGULANTS, DATA, DECOMPOSITION, DRUGS, ELECTROMAGNETIC RADIATION, HEMATOLOGIC AGENTS, HYDROXY COMPOUNDS, INFORMATION, IONIZING RADIATIONS, NUMERICAL DATA, ORGANIC ACIDS, ORGANIC COMPOUNDS, ORGANIC OXYGEN COMPOUNDS, QUINONES, RADIATION EFFECTS, RADIATIONS, VITAMINS
Publication YearPublication Year
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] This issue (June-July 1997) of 'DRN actualites' reports on some important events concerning the international cooperation activities of the Nuclear Reactors Direction (DRN) of the CEA. (J.S.)
Original Title
DRN actualites
Primary Subject
Secondary Subject
Source
1997; 6 p
Record Type
Report
Report Number
Country of publication
Publication YearPublication Year
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
1 | 2 | 3 | Next |