標(biāo)題: Titlebook: Rate Coefficients in Astrochemistry; Proceedings of a Con T. J. Millar,D. A. Williams Conference proceedings 1988 Kluwer Academic Publisher [打印本頁(yè)] 作者: 猛烈抨擊 時(shí)間: 2025-3-21 18:59
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作者: incite 時(shí)間: 2025-3-21 23:08 作者: Lacunar-Stroke 時(shí)間: 2025-3-22 00:38
David R. Bates,Eric Herbsty, and metabolism. Therefore, advanced analytical approaches, involving LC–MS, are required to quantify these molecules in plasma, tissues, and other matrices. It has been shown that endocannabinoid congeners synthesized from n-3 poly-unsaturated fatty acids (n-3 PUFAs), such as docosahexaenoylethan作者: 環(huán)形 時(shí)間: 2025-3-22 08:06
David R. Bates,Eric Herbstntation advice from the experts.Thisvolume encompasses all major methodologies to interrogate endocannabinoidsystems (ECS) and endocannabinoids (eCBs) signaling. With increasing interesttowards the manifold activities of eCBs, this book discusses the chemical,biochemical, and molecular biological as作者: Afflict 時(shí)間: 2025-3-22 10:49 作者: 現(xiàn)任者 時(shí)間: 2025-3-22 14:55
E. Roueff,H. Abgrall,J. le Bourlot,Y. Vialad when developing new therapies for neurodegenerative disorders. First, we will describe the cellular and molecular mechanisms, and the signaling pathways, underlying these neuroprotective properties, including the control of glutamate homeostasis, calcium influx, the toxicity of reactive oxygen spe作者: 誘使 時(shí)間: 2025-3-22 17:15 作者: bibliophile 時(shí)間: 2025-3-22 21:22
Ian W. M. Smithosed schemas to predict prognosis, and the new treatment strategies to improve the outcome of patients afflicted with this serious condition.??.Endocarditis is a serious disease with ahigh rate of morbidity and mortality.?The in-hospital mortality remains at 10-20%. The poor outcome ofpatients with 作者: 禁止 時(shí)間: 2025-3-23 03:57 作者: 指耕作 時(shí)間: 2025-3-23 06:26
B. R. Rowephase is essential to prevent serious morbidity and mortality..MRI sequences such as GRE and SWI have great sensitivity to detect micro-hemorrhages in order to detect systemic sepsis affecting the CNS and subclinical embolic events. In the case of an acute neurological deficit in a patient known to 作者: 是貪求 時(shí)間: 2025-3-23 12:15 作者: 貧困 時(shí)間: 2025-3-23 17:29
Drift Tube Studies of Ion-Neutral Reactions and Their Relevance to Interstellar Chemistry, gas. Some consideration is given to the variation with E. and E. of the rate coefficients, k., for ternary association reactions and to the relevance of the data in estimating radiative association rate coefficients appropriate to shocked interstellar gas.作者: 完整 時(shí)間: 2025-3-23 21:47
Radiative Association,ernary) association studies yield valuable information about radiative association processes. In this review, we consider the nature of association reactions — both radiative and ternary — and discuss experimental and theoretical approaches to the determination of rate coefficients of radiative association reactions.作者: 形上升才刺激 時(shí)間: 2025-3-24 00:55
,Hot Molecular Cores — A Case for Accretion,f a nearby star. Support is thereby given to the idea that mantle material is returned to the gas-phase sporadically, on a timescale of a million years, as a result of star formation, shocks etc., rather than by a continually acting desorption mechanism.作者: Projection 時(shí)間: 2025-3-24 03:47
Conference proceedings 1988 and C2 would appear to be proIDising" P Swings and L Rosenfeld Astrophysical Journal 86,483(1937) This may have been the first attempt at modelling interstellar chemistry. As with models today, the methods used lacked reliability, but the speculation was impressive! Mark Twain might well have said 作者: 膽大 時(shí)間: 2025-3-24 07:13 作者: 種族被根除 時(shí)間: 2025-3-24 10:59
Dissociative Recombination: Polyatomic Positive Ion Reactions with Electrons and Negative Ions, point of view. It is argued that polyatomic ions are composed of valence bonds and that the dissociative recombination process normally involves the rupture of one of these bonds. This viewpoint leads to markedly different products from the predictions of previous theories. Recombination between a 作者: 衣服 時(shí)間: 2025-3-24 15:53
Photodissociation and Photoionization Processes,endent photodestruction rates by the interstellar radiation field are presented for a number of atoms and small molecules. The photodissociation processes of CO are discussed with reference to new laboratory data on the absorption cross sections.作者: 建筑師 時(shí)間: 2025-3-24 21:01
Radiative Pumping and Collisional Excitation of Molecules in Diffuse Interstellar Clouds,reviewed. Particular attention is drawn to non-adiabatic coupling effects on the intensities of Lyman and Werner band systems of the vacuum ultraviolet spectrum of H. and to the role of nuclear spin on ortho-para transitions in H. due to H. collisions. The inter-relation between those processes and 作者: HERTZ 時(shí)間: 2025-3-25 00:40
Charge Transfer in Astrophysical Plasmas,ures of the collision process are analyzed within the framework of the molecular model and a brief discussion is given of the theoretical methods used to calculate the cross-sections. A comparison of recent theoretical results with the available experimental data at laboratory energies would indicat作者: harangue 時(shí)間: 2025-3-25 05:07
Experimental Measurements of the Rate Constants for Neutral-Neutral Reactions,n of these methods to reactions of two types — radical-molecule and radical-radical reactions — is illustrated by reference to some recent studies in the author’s laboratory. As most radical-molecule reactions have significant activation energies they will be insignificantly slow at the temperatures作者: 有罪 時(shí)間: 2025-3-25 09:46
Studies of Ion-Molecule Reactions at T < 80k,s. With an ion trap and a static drift tube cryogenic cooling by liquid helium is used. These techniques are therefore restricted to molecular hydrogen as neutral reactant. With the CRESU method the low temperature is obtained by supersonic expansion. This last technique has a high chemical versatil作者: AVID 時(shí)間: 2025-3-25 12:51
Drift Tube Studies of Ion-Neutral Reactions and Their Relevance to Interstellar Chemistry,e ion/reactant molecule (E.) and the ion/buffer gas (E.) centre-of-mass energies are discussed. It is shown that drift tube data of k versus E., for atomic ion/neutral reactions can be used with confidence in modelling the ion chemistry of shocked interstellar gas. However, it is stressed that drift作者: Phagocytes 時(shí)間: 2025-3-25 16:29
Laboratory Studies of Dissociative Recombination and Mutual Neutralization and Their Relevance to Itive-ion/negative-ion mutual neutralization coefficients, q., are briefly discussed. These include the stationary afterglow (SA), the variable-temperature flowing afterglow/Langmuir probe VT-FALP) and the merged beam (MB) techniques. It is suggested that the data of choice for interstellar ion-chemi作者: 數(shù)量 時(shí)間: 2025-3-25 22:53
Chemical Pathways from Atomic Silicon Ions to Silicon Carbides and Oxides,first steps in the chemical pathways leading from atomic silicon to the formation of silicon carbide and oxide molecules of the type which may be precursors for the formation of silicon carbide and silicate grain particles in carbon-rich and oxygen-rich astrophysical environments.作者: genesis 時(shí)間: 2025-3-26 04:07 作者: Anterior 時(shí)間: 2025-3-26 05:14 作者: Common-Migraine 時(shí)間: 2025-3-26 11:34
Dense Interstellar Cloud Chemistry,include the delineation of the reaction pathways by which complex molecules are produced, a preliminary understanding of the varied chemistries existing in and near regions of star formation, an appreciation that photodissociation caused by internally generated photons is important, and a realizatio作者: Fibrinogen 時(shí)間: 2025-3-26 12:39
,Hot Molecular Cores — A Case for Accretion, we demonstrate that accretion does occur and that reactions on the surface with hydrogen and deuterium atoms are important. Observations of hot cores show enhanced abundances of ammonia, methanol and deuterium-bearing species. These enhancements cannot be reproduced by gas-phase chemistry alone. We作者: insert 時(shí)間: 2025-3-26 19:34 作者: 自然環(huán)境 時(shí)間: 2025-3-26 21:04
Dynamical Models of the Chemistry in Interstellar Clouds, in detail. In many dark clouds, both observations and theory indicate that material is continually recycled between dense and tenuous states and that the dynamics of this recycling drastically affects the chemical evolution. In diffuse clouds, recent studies of interstellar grains indicate that the作者: 獎(jiǎng)牌 時(shí)間: 2025-3-27 01:45
Chemistry in Expanding Circumstellar Envelopes,chemical processes help determine the overall chemical composition of such envelopes, the detailed composition, as evidenced by the many molecules detected at radio wavelengths, is best explained by a complex ion-molecule chemistry driven by ionisation caused by the ambient external ultraviolet radi作者: 沒有貧窮 時(shí)間: 2025-3-27 06:15 作者: 易彎曲 時(shí)間: 2025-3-27 12:49 作者: antidote 時(shí)間: 2025-3-27 16:54
Chemistry in Shocked Interstellar Gas,ntly enhanced by the rotational excitation energy of the H. molecule in the reaction C. (H.(J),H) CH. but is increased if the reaction CH. (H., H)CH. proceeds at appreciably less than the Langevin rate at high effective temperatures.作者: ABASH 時(shí)間: 2025-3-27 19:58 作者: 同時(shí)發(fā)生 時(shí)間: 2025-3-27 22:38 作者: 有節(jié)制 時(shí)間: 2025-3-28 03:31
Radiative Pumping and Collisional Excitation of Molecules in Diffuse Interstellar Clouds,t spectrum of H. and to the role of nuclear spin on ortho-para transitions in H. due to H. collisions. The inter-relation between those processes and state to state chemistry is stressed out. We discuss the implications of these new data in a recent comprehensive model of diffuse interstellar clouds (Viala et al., 1987).作者: Prosaic 時(shí)間: 2025-3-28 08:06
Charge Transfer in Astrophysical Plasmas, to calculate the cross-sections. A comparison of recent theoretical results with the available experimental data at laboratory energies would indicate that the theoretical model should be reliable for predicting cross-sections at astrophysical energies.作者: AMEND 時(shí)間: 2025-3-28 12:21 作者: 機(jī)制 時(shí)間: 2025-3-28 17:42
Diffuse Cloud Chemistry,vational tests which may discriminate between the various models are suggested. Recent developments regarding the velocity structure of diffuse clouds are mentioned. Similarities and differences between the chemistries in diffuse clouds and those in translucent and high latitude clouds are pointed out.作者: Parley 時(shí)間: 2025-3-28 21:53 作者: PAN 時(shí)間: 2025-3-29 02:35
0067-0057 gest interstellar molecule detected so far, cyano-penta- acetylene HC11N, The study of these molecules in astronomy has developed enormously, especially over th978-94-010-7851-1978-94-009-3007-0Series ISSN 0067-0057 Series E-ISSN 2214-7985 作者: 協(xié)定 時(shí)間: 2025-3-29 06:35
Laboratory Studies of Dissociative Recombination and Mutual Neutralization and Their Relevance to Iing the temperature dependence of q., appropriate values of q. for use in interstellar ion chemical models are suggested. Also briefly discussed are the most reliable values available for q.. These are included in view of the recent suggestion that significant concentrations of negatively-charged po作者: 擁護(hù)者 時(shí)間: 2025-3-29 08:15 作者: Orchiectomy 時(shí)間: 2025-3-29 12:52 作者: 飛行員 時(shí)間: 2025-3-29 19:30
Michael Henchman,David Smith,Nigel Adams,John F. Paulson,W. Lindinger作者: mediocrity 時(shí)間: 2025-3-29 20:03
D. R. Flower,T. S. Monteiro,G. Pineau des Forêts,E. Roueff作者: ADORN 時(shí)間: 2025-3-30 03:24
elated mood disorders. Over the past few years, extensive research has focused on the functional interaction between eCB signaling and 5-HT systems. As a result, steady progress is made in our understanding of the cellular mechanisms by which eCB signaling regulates the function of 5-HT system. In t作者: 終點(diǎn) 時(shí)間: 2025-3-30 06:41 作者: exostosis 時(shí)間: 2025-3-30 11:27 作者: Chronic 時(shí)間: 2025-3-30 16:25
Ewine F. van Dishoeckon or function of any of these pathways alter the vascular effect of endocannabinoids. Endocannabinoids have positive (CB.) and negative effects (CB.) on the progression of atherosclerosis. However, any negative effects of CB. may not be consequential, as chronic CB. antagonism in large scale human 作者: 賠償 時(shí)間: 2025-3-30 18:31
E. Roueff,H. Abgrall,J. le Bourlot,Y. Vialand proposals for future research that should be carried out to optimize endocannabinoid-based treatments for these disorders. Such studies will strengthen the possibility that these therapies will be investigated in the clinical scenario and licensed for their use in specific disorders.作者: fixed-joint 時(shí)間: 2025-3-31 00:30 作者: 墊子 時(shí)間: 2025-3-31 01:05
Ian W. M. Smithlecular probes and new imaging techniques to improve ourability to identify the disease early and reliably.? New treatment strategies have been studiedwith the aim to prevent complications and to improve survival..Thestructure of the previous edition is preserved.?The book is divided into three sect作者: CODA 時(shí)間: 2025-3-31 07:46
Diethard K. Bohmed prior to antibiotic administration, blood cultures can be expected to yield growth of the causative organism in over 90 % of cases of infective endocarditis. Serologic testing can be useful in determining the cause of IE in true culture-negative cases, which are usually caused by organisms that ar作者: AER 時(shí)間: 2025-3-31 12:39 作者: 使成整體 時(shí)間: 2025-3-31 13:21
Astrophysics and Space Science Libraryhttp://image.papertrans.cn/r/image/821339.jpg作者: HALO 時(shí)間: 2025-3-31 18:15 作者: CAPE 時(shí)間: 2025-4-1 00:07 作者: mortgage 時(shí)間: 2025-4-1 02:04 作者: Prosaic 時(shí)間: 2025-4-1 08:39 作者: Obsessed 時(shí)間: 2025-4-1 11:22
Polycarbon and Hydrocarbon Ions and Molecules in Space,The growth of polycarbon and hydrocarbon ions and molecules possible in interstellar clouds and circumstellar envelopes is viewed in terms of results of laboratory gas-phase measurements for selected ion/molecule reactions. Emphasis is given to the formation of these carbonaceous species as chains, rings, sheets and spheres of C atoms.作者: Brocas-Area 時(shí)間: 2025-4-1 17:27
