I. Electronic processes in ��-sulfur. II. Polaron motion in a D.C. electric field

<p>Part I: The mobilities of photo-generated electrons and holes in orthorhombic sulfur are determined by drift mobility techniques. At room temperature electron mobilities between 0.4 cm²/V-sec and 4.8 cm²/V-sec and hole mobilities of about 5.0 cm²/V-sec are reported. The temperature dependence of the electron mobility is attributed to a level of traps whose effective depth is about 0.12 eV. This value is further supported by both the voltage dependence of the space-charge-limited, D.C. photocurrents and the photocurrent versus photon energy measurements.</p> <p>As the field is increased from 10 kV/cm to 30 kV/cm a second mechanism for electron transport becomes appreciable and eventually dominates. Evidence that this is due to impurity band conduction at an appreciably lower mobility (4.10^-4 cm²/V-sec) is presented. No low mobility hole current could be detected. When fields exceeding 30 kV/cm for electron transport and 35 kV/cm for hole transport are applied, avalanche phenomena are observed. The results obtained are consistent with recent energy gap studies in sulfur. </p> <p>The theory of the transport of photo-generated carriers is modified to include the case of appreciable thermos-regeneration from the traps in one transit time.</p> <p>Part II: An explicit formula for the electric field E necessary to accelerate an electron to a steady-state velocity v in a polarizable crystal at arbitrary temperature is determined via two methods utilizing Feynman Path Integrals. No approximation is made regarding the magnitude of the velocity or the strength of the field. However, the actual electron-lattice Coulombic interaction is approximated by a distribution of harmonic oscillator potentials. One may be able to find the ���best possible��� distribution of oscillators using a variational principle, but we have not been able to find the expected criterion. However, our result is relatively insensitive to the actual distribution of oscillators used, and our E-v relationship exhibits the physical behavior expected for the polaron. Threshold fields for ejecting the electron for the polaron state are calculated for several substances using numerical results for a simple oscillator distribution. </p>

An experimental study of a stellar neutron source: ^(13)C(��, n)^(16)O

<p>Described in this thesis are measurements made of the thick-target neutron yield from the reaction ¹³C(��, n)¹⁶O. The yield was determined for laboratory bombarding energies between 0.475 and 0.700 MeV, using a stilbene crystal neutron detector and pulse-shape discrimination to eliminate gamma rays. Stellar temperatures between 2.5 and 4.5 x 10⁸ ^oK are involved in this energy region. From the neutron yield was extracted the astrophysical cross-section factor S(E), which was found to fit a linear function: S(E) = [(5.48 �� 1.77) + (12.05 �� 3.91)E] x 10⁵ MeV-barns, center-of-mass system. The stellar rate of the ¹³C(��, n)¹⁶O reaction if calculated, and discussed with reference to helium burning and neutron production in the core of a giant star. </p> <p>Results are also presented of measurements carried out on the reaction ⁹Be(��, n)¹²C, taken with a thin Be target. The bombarding energy-range covered was from 0.340 to 0.680 MeV, with excitation curves for the ground- and first excited-state neutrons being reported. Some angular distributions were also measured. Resonances were found at bombarding energies of E_LAB = 0.520 MeV (E_CM = 0.360 MeV, �� ~ 55 keV CM, ���� = 3.79 eV CM) and E_LAB = 0.600 MeV (E_CM = 0.415 MeV, �� �� 4 keV CM, ���� = 0.88 eV CM). The astrophysical rate of the ⁹Be(��, n)¹²C reaction due to these resonances is calculated. </p>

Terapia periodontal n��o-cir��rgica reduz press��o arterial, massa ventricular esquerda, disfun����o endotelial e n��veis plasm��ticos de prote��na C-reativa, interleucina 6 e fibrinog��nio

Evid��ncias recentes sugerem que as doen��as periodontais podem desempenhar um papel relevante na etiologia e patog��nese de doen��as cardiovasculares e hipertens��o arterial. A resposta inflamat��ria, com conseq��ente eleva����o de marcadores sist��micos como prote��na C-reativa, fibrinog��nio e interleucina-6, e a disfun����o endotelial, podem ser os respons��veis por essa associa����o. Alguns estudos t��m relatado maiores n��veis press��ricos, maior massa ventricular esquerda e disfun����o endotelial em pacientes com doen��as periodontais. Ao mesmo tempo, estudos cl��nicos v��m mostrando que a terapia periodontal pode levar �� redu����o dos n��veis plasm��ticos dos marcadores de inflama����o e redu����o do risco cardiovascular. O presente estudo teve como objetivo avaliar os efeitos da terapia periodontal n��o-cir��rgica em 26 pacientes (idade m��dia de 53.68.0 anos) hipertensos refrat��rios. Foram avaliados marcadores plasm��ticos de inflama����o (prote��na C-reativa, fibrinog��nio e interleucina-6), press��o arterial sist��lica e diast��lica, massa ventricular esquerda e rigidez arterial. A terapia periodontal foi eficaz na redu����o da m��dia de todos os marcadores de risco cardiovascular avaliados. Os n��veis de prote��na C-reativa baixaram 0.7mg/dl 6 meses ap��s a terapia periodontal, os de IL-6, 1.6pg/dl e os de fibrinog��nio 55.3mg/dl (p<0.01). A press��o arterial sist��lica apresentou redu����o m��dia de 16.7mmHg e a diast��lica de 9.6mmHg. A massa ventricular esquerda diminuiu em m��dia 12.9g e a velocidade da onda de pulso, um marcador de rigidez arterial, e consequentemente de disfun����o endotelial, apresentou redu����o de seus valores m��dios de 0.9m/s (p<0.01). Dessa forma, conclui-se que a terapia periodontal foi eficaz na redu����o dos n��veis de prote��na C-reativa, interleucina-6, fibrinog��nio, press��o arterial, massa ventricular esquerda e rigidez arterial.

��+ photoproduction at angles from 6�� to 90�� C.M. and energies from 589 to 1269 MeV

The differential cross section for the reaction ��p ��� ��⁺n was measured at 32 laboratory photon energies between 589 and 1269 MeV at the Caltech Synchrotron. At each energy, data have been obtained at typically fifteen ��⁺ c.m. angles between 6�� and 90��. A magnetic spectrometer was used to detect the ��⁺ photo-produced in a liquid hydrogen target. Two Cherenkov counters were used to reject the background of positrons and protons. The data clearly show the presence of a pole in the production amplitude due to the one pion exchange. Moravcsik fits to the 32 angular distributions, including data from another experiment, are presented. The extrapolation of these fits to the pole gives a value for the pion-nucleon coupling constant of 14.5 which is consistent with the accepted value. The second and third pion-nucleon resonances are evident as peaks in the total cross section and as changes in the shape of the angular distributions. At the third resonance there is evidence for both a D5/2 and an F5/2 amplitude. The absence of large variations in the 0�� and 180�� cross sections implies that the second and third resonances are mostly produced from an initial state with helicity �� 3/2.

Experimental study study of antiproton-proton annihilation into a pair of charged Pi-Mesons or K-Mesons for incident antiproton mementa in the range from 0.72 GeV/c to 2.62 GeV/c

<p>The cross sections for the two antiproton-proton annihilation-in-flight modes,</p> <p>��p + p ��� ��⁺ + ��^-</p> <p>��p + p ��� k⁺ + k^-</p> <p>were measured for fifteen laboratory antiproton beam momenta ranging from 0.72 to 2.62 GeV/c. No magnets were used to determine the charges in the final state. As a result, the angular distributions were obtained in the form [d��/d�� (��_C.M.) + d��/d�� (�� ��� ��_C.M.)] for 45 ��� ��_C.M. ��� 135��. </p> <p>A hodoscope-counter system was used to discriminate against events with final states having more than two particles and antiproton-proton elastic scattering events. One spark chamber was used to record the track of each of the two charged final particles. A total of about 40,000 pictures were taken. The events were analyzed by measuring the laboratory angle of the track in each chamber. The value of the square of the mass of the final particles was calculated for each event assuming the reaction</p> <p>��p + p ��� a pair of particles with equal masses.</p> <p>About 20,000 events were found to be either annihilation into �� ^��-pair or k ^��-pair events. The two different charged meson pair modes were also distinctly separated.</p> <p>The average differential cross section of ��p + p ��� ��⁺ + ��^- varied from ~ 25 ��b/sr at antiproton beam momentum 0.72 GeV/c (total energy in center-of-mass system, ���s = 2.0 GeV) to ~ 2 ��b/sr at beam momentum 2.62 GeV/c (���s = 2.64 GeV). The most striking feature in the angular distribution was a peak at ��_C.M. = 90�� (cos ��_C.M. = 0) which increased with ���s and reached a maximum at ���s ~ 2.1 GeV (beam momentum ~ 1.1 GeV/c). Then it diminished and seemed to disappear completely at ���s ~ 2.5 GeV (beam momentum ~ 2.13 GeV/c). A valley in the angular distribution occurred at cos ��_C.M. ��� 0.4. The differential cross section then increased as cos ��_C.M. approached 1.</p> <p>The average differential cross section for ��p + p ��� k⁺ + k^- was about one third of that of the ��^��-pair mode throughout the energy range of this experiment. At the lower energies, the angular distribution, unlike that of the ��^��-pair mode, was quite isotropic. However, a peak at ��_C.M. = 90�� seemed to develop at ���s ~ 2.37 GeV (antiproton beam momentum ~ 1.82 GeV/c). No observable change was seen at that energy in the ��^��-pair cross section.</p> <p>The possible connection of these features with the observed meson resonances at 2.2 GeV and 2.38 GeV, and its implications, were discussed. </p>

Estrategia para bloquear la entrada del virus de la Hepatitis C (HCV) en hepatocitos primarios

En esta memoria se presenta una propuesta para desarrollar un proyecto de investigaci��n que permita establecer la eficacia de una estrategia original para evitar la entrada del virus de la hepatitis C (HCV) en las c��lulas hep��ticas. Se propone la utilizaci��n combinada de dos anticuerpos contra dos factores esenciales para la entrada HCV en las c��lulas hep��ticas, como son las mol��culas CD81 y SR-BI. La eficacia para reducir la capacidad infectiva del HCV de bloquear individualmente cada una de estas mol��culas ha sido previamente demostrada, as�� que en este proyecto proponemos que un uso combinado de mol��culas que bloqueen ambos receptores permitir��a avanzar en la b��squeda de vacunas que eviten eficazmente la infecci��n del HCV.

Late Transition Metals Supported by Aryl Ethers and Phenoxides Bearing Pendant Phosphines: Mechanistic Insights Relevant to Ether C-O Bond Cleavage

<p>Terphenyl diphosphines bearing pendant ethers were prepared to provide mechanistic insight into the mechanism of activation of aryl C���O bonds with Group 9 and Group 10 transition metals. Chapters 2 and 3 of this dissertation describe the reactivity of compounds supported by the model phosphine and extension of this chemistry to heterogenous C���O bond activation.</p> <p>Chapter 2 describes the synthesis and reactivity of aryl-methyl and aryl-aryl model systems. The metallation of these compounds with Ni, Pd, Pt, Co, Rh, and Ir is described. Intramolecular bond activation pathways are described. In the case of the aryl-methyl ether, aryl C���O bond activation was observed only for Ni, Rh, and Ir.</p> <p>Chapter 3 outlines the reactivity of heterogenous Rh and Ir catalysts for aryl ether C���O bond cleavage. Using Rh/C and an organometallic Ir precursor, aryl ethers were treated with H2 and heat to afford products of hydrogenolysis and hydrogenation. Conditions were modified to optimize the yield of hydrogenolysis product. Hydrogenation could not be fully suppressed in these systems.</p> <p>Appendix A describes initial investigations of bisphenoxyiminoquinoline dichromium compounds for selective C2H4 oligomerization to afford ��-olefins. The synthesis of monometallic and bimetallic Cr complexes is described. These compounds are compared to literature examples and found to be less active and non-selective for production of ��-olefins.</p> <p>Appendix B describes the coordination chemistry of terphenyl diphosphines, terphenyl bisphosphinophenols, and biphenyl phosphinophenols proligands with molybdenum, cobalt, and nickel. Since their synthesis, terphenyl diphosphine molybdenum compounds have been reported to be good catalysts for the dehydrogenation of ammonia borane. Biphenyl phosphinophenols are demonstrated provide both phosphine and arene donors to transition metals while maintaining a sterically accessible coordination sphere. Such ligands may be promising in the context of the activation of other small molecules.</p> <p>Appendix C contains relevant NMR spectra for the compounds presented in the preceding sections.</p>

I. The 3.7 �� crystal structure of horse heart ferricytochrome C. II. The application of the Karle-Hauptman tangent formula to protein phasing

<p><u>I. The 3.7 �� Crystal Structure of Horse Heart Ferricytochrome C. </u></p> <p>The crystal structure of horse heart ferricytochrome c has been determined to a resolution of 3.7 �� using the multiple isomorphous replacement technique. Two isomorphous derivatives were used in the analysis, leading to a map with a mean figure of merit of 0.458. The quality of the resulting map was extremely high, even though the derivative data did not appear to be of high quality. </p> <p>Although it was impossible to fit the known amino acid sequence to the calculated structure in an unambiguous way, many important features of the molecule could still be determined from the 3.7 �� electron density map. Among these was the fact that cytochrome c contains little or no ��-helix. The polypeptide chain appears to be wound about the heme group in such a way as to form a loosely packed hydrophobic core in the molecule. </p> <p>The heme group is located in a cleft on the molecule with one edge exposed to the solvent. The fifth coordinating ligand is His 18 and the sixth coordinating ligand is probably neither His 26 nor His 33. </p> <p>The high resolution analysis of cytochrome c is now in progress and should be completed within the next year. </p> <p><u>II. The Application of the Karle-Hauptman Tangent Formula to Protein Phasing.</u> </p> <p>The Karle-Hauptman tangent formula has been shown to be applicable to the refinement of previously determined protein phases. Tests were made with both the cytochrome c data from Part I and a theoretical structure based on the myoglobin molecule. The refinement process was found to be highly dependent upon the manner in which the tangent formula was applied. Iterative procedures did not work well, at least at low resolution. </p> <p>The tangent formula worked very well in selecting the true phase from the two possible phase choices resulting from a single isomorphous replacement phase analysis. The only restriction on this application is that the heavy atoms form a non-centric cluster in the unit cell. </p> <p>Pages 156 through 284 in this Thesis consist of previously published papers relating to the above two sections. References to these papers can be found on page 155. </p>

Design, Synthesis, and Study of Novel Platforms for Iron-N2 Chemistry and Photoinduced, Copper-mediated C-N Bond Formation

<p>Several new ligand platforms designed to support iron dinitrogen chemistry have been developed. First, we report Fe complexes of a tris(phosphino)alkyl (CP^iPr₃) ligand featuring an axial carbon donor intended to conceptually model the interstitial carbide atom of the nitrogenase iron-molybdenum cofactor (FeMoco). It is established that in this scaffold, the iron center binds dinitrogen trans to the C_alkyl anchor in three structurally characterized oxidation states. Fe-C_alkyl lengthening is observed upon reduction, reflective of significant ionic character in the Fe-C_alkyl interaction. The anionic (CP^iPr₃)FeN₂^- species can be functionalized by a silyl electrophile to generate (CP^iPr₃)Fe-N₂SiR₃. This species also functions as a modest catalyst for the reduction of N₂ to NH₃. Next, we introduce a new binucleating ligand scaffold that supports an Fe(��-SAr)Fe diiron subunit that coordinates dinitrogen (N₂-Fe(��-SAr)Fe-N₂) across at least three oxidation states (Fe^IIFe^II, Fe^IIFe^I, and Fe^IFe^I). Despite the sulfur-rich coordination environment of iron in FeMoco, synthetic examples of transition metal model complexes that bind N₂ and also feature sulfur donor ligands remain scarce; these complexes thus represent an unusual series of low-valent diiron complexes featuring thiolate and dinitrogen ligands. The (N₂-Fe(��-SAr)Fe-N₂) system undergoes reduction of the bound N₂ to produce NH₃ (~50% yield) and can efficiently catalyze the disproportionation of N₂H₄ to NH₃ and N₂. The present scaffold also supports dinitrogen binding concomitant with hydride as a co-ligand. Next, inspired by the importance of secondary-sphere interactions in many metalloenzymes, we present complexes of iron in two new ligand scaffolds ([SiP^NMe₃] and [SiP^iPr₂P^NMe]) that incorporate hydrogen-bond acceptors (tertiary amines) which engage in interactions with nitrogenous substrates bound to the iron center (NH₃ and N₂H₄). Cation binding is also facilitated in anionic Fe(0)-N₂ complexes. While Fe-N₂ complexes of a related ligand ([SiP^iPr₃]) lacking hydrogen-bond acceptors produce a substantial amount of ammonia when treated with acid and reductant, the presence of the pendant amines instead facilitates the formation of metal hydride species.</p> <p>Additionally, we present the development and mechanistic study of copper-mediated and copper-catalyzed photoinduced C-N bond forming reactions. Irradiation of a copper-amido complex, ((m-tol)₃P)₂Cu(carbazolide), in the presence of aryl halides furnishes N-phenylcarbazole under mild conditions. The mechanism likely proceeds via single-electron transfer from an excited state of the copper complex to the aryl halide, generating an aryl radical. An array of experimental data are consistent with a radical intermediate, including a cyclization/stereochemical investigation and a reactivity study, providing the first substantial experimental support for the viability of a radical pathway for Ullmann C-N bond formation. The copper complex can also be used as a precatalyst for Ullmann C-N couplings. We also disclose further study of catalytic C_alkyl-N couplings using a CuI precatalyst, and discuss the likely role of [Cu(carbazolide)₂]^- and [Cu(carbazolide)₃]^- species as intermediates in these reactions.</p> <p>Finally, we report a series of four-coordinate, pseudotetrahedral P₃Fe^II-X complexes supported by tris(phosphine)borate ([PhBP₃Fe^R]^-) and phosphiniminato X-type ligands (-N=PR'₃) that in combination tune the spin-crossover behavior of the system. Low-coordinate transition metal complexes such as these that undergo reversible spin-crossover remain rare, and the spin equilibria of these systems have been studied in detail by a suite of spectroscopic techniques.</p>

Desenvolvimento de t��cnica de an��lise de imagens digitais para avalia����o do est��gio da fibrose em bi��psias hep��ticas de pacientes portadores de hepatite cr��nica por v��rus da hepatite B e C

As hepatites cr��nicas por v��rus s��o as mais frequentes, destacando-se os v��rus das hepatites B (VHB) e C (VHC). O estudo anatomopatol��gico da bi��psia hep��tica �� considerado o padr��o ouro para avaliar com precis��o a distor����o arquitetural e o grau de fibrose do par��nquima do f��gado, importantes fatores progn��sticos para os pacientes portadores de hepatites cr��nicas virais. Na avalia����o histopatol��gica atual, em adi����o aos relatos subjetivos das altera����es histol��gicas, escores semiquantitativos que correlacionam achados morfol��gicos com graus num��ricos s��o usados, tais como os reconhecidos escores de Ishak e METAVIR. Entretanto, em todos estes sistemas h�� a desvantagem da subjetividade do examinador e da incorpora����o de altera����es categ��ricas, sem refer��ncias ��s mudan��as quantitativas do col��geno hep��tico. T��cnicas de an��lise de imagens digitais (AID) que fornecem quantifica����o objetiva dos graus de fibrose em amostras histol��gicas t��m sido desenvolvidas. Todavia, o alto custo e dificuldade ao acesso das tecnologias descritas restringem seu uso a poucos centros especializados. Este estudo visa o desenvolvimento de uma t��cnica de custo acess��vel para a an��lise de imagens digitais da fibrose hep��tica em hepatites cr��nicas virais. Foram estudadas 304 bi��psias de pacientes com hepatite cr��nica por v��rus B e C, obtidas atrav��s de agulhas Menghini. Todas as amostras tinham pelo menos 15 mm de comprimento ou cinco espa��os-porta completos e foram coradas pelo m��todo Tricr��mico de Masson. O estadiamento foi feito por um ��nico hepatopatologista experiente, sem o conhecimento dos dados cl��nicos dos pacientes. Os escores de Ishak e METAVIR foram aplicados. As imagens microsc��picas foram digitalizadas. Os ��ndices de fibrose foram determinados de forma automatizada, em t��cnica desenvolvida no programa Adobe Photoshop. Para o escore de Ishak, observamos os seguintes ��ndices de Fibrose (IF) m��dios: 0,8% 0,0 (est��gio 0), 2.4% 0,6 (est��gio 1), 4,7% 1,6 (est��gio 2), 7,4% 1,4 (est��gio 3), 14,9% 3,7 (est��gio 4), 23,4% 2,9 (est��gio 5) e 34,5% 1,5 (est��gio 6). Para a classifica����o METAVIR: 0,8% 0,1 (est��gio F0), 3,8% 1,8 (est��gio F1), 7,4% 1,4 (est��gio F2), 20,4% 5,2 (est��gio F3) e 34,5% 1,5 (est��gio F4). Observamos uma excelente correla����o entre os ��ndices de fibrose da AID e os escores de Ishak (r=0,94; p<0,001) e METAVIR (r=0,92; p<0,001). Em rela����o �� indica����o de tratamento antiviral, foi observado IF m��dio de 16,4%. Em rela����o ao diagn��stico de cirrose, foi observado IF m��dio de 26,9%, para o escore de Ishak, e 34,5% para a classifica����o METAVIR. A reprodutibilidade intra-observador foi excelente. Este novo m��todo de an��lise de imagens digitais para a quantifica����o de fibrose hep��tica tem custo acess��vel e foi desenvolvido com tecnologia que est�� dispon��vel em todo o mundo, permitindo identificar com precis��o todos os est��gios de fibrose, com excelente reprodutibilidade intra-observador.

An investigation of the reaction negative K��p ��� K������� at P_(lab) = 2 Gev/c

<p>The reaction K^-p���K^-��⁺n has been studied for incident kaon momenta of 2.0 GeV/c. A sample of 19,881 events was obtained by a measurement of film taken as part of the K-63 experiment in the Berkeley 72 inch bubble chamber. </p> <p>Based upon our analysis, we have reached four conclusions. (1) The magnitude of the extrapolated K�� cross section differs by a factor of 2 from the P-wave unitarity prediction and the K⁺n results; this is probably due to absorptive effects. (2) Fits to the moments yield precise values for the K�� S-wave which agree with other recent statistically accurate experiments. (3) An anomalous peak is present in our backward K^-p���(��+n) K^- u-distribution. (4) We find a non-linear enhancement due to interference similiar to the one found by Bland et al. (Bland 1966).</p>

Part I: Total yield measurements for the ^(21)Ne(��,n)^)(24)Mg reaction. Part II: A study of the ^(12)C(He,p)^(14)N reaction

<p>PART I</p> <p>The total cross-section for the reaction ²¹Ne(��, n)²⁴Mg has been measured in the energy range 1.49 Mev ��� E_cm ��� 2.6 Mev. The cross-section factor, S(O), for this reaction has been determined, by means of an optical model calculation, to be in the range 1.52 x 10¹² mb-Mev to 2.67 x 10¹² mb-Mev, for interaction radii in the range 5.0 fm to 6.6 fm. With S(O) ��� 2 x 10¹² mb-Mev, the reaction ²¹Ne(��, n)²⁴Mg can produce a large enough neutron flux to be a significant astrophysical source of neutrons.</p> <p>PART II</p> <p>The reaction¹²C(³He, p)¹⁴N has been studied over the energy range 12 Mev ��� E_lab ��� 18 Mev. Angular distributions of the proton groups leading to the lowest seven levels in ¹⁴N were obtained.</p> <p>Distorted wave calculations, based on two-nucleon transfer theory, were performed, and were found to be reliable for obtaining the value of the orbital angular momentum transferred. The present work shows that such calculations do not yield unambiguous values for the spectroscopic factors.</p>

Inelastic K+p reactions at incident momenta from 1.37 GeV/c to 2.17 GeV/c

<p>A number of recent experiments have suggested the possibility of a highly inelastic resonance in K⁺p scattering. To study the inelastic K⁺p reactions, a 400 K exposure has been taken at the L.R.L. 25 inch bubble chamber. The data are spread over seven K⁺ momenta between 1.37 and 2.17 GeV/c.</p> <p>Cross-sections have been measured for the reaction K⁺p ��� pK����+ which is dominated by the quasi-two body channels K��� and K*N. Both these channels are strongly peripheral, as at other momenta. The decay of the ��� is in good agreement with the predictions of the rho-photon analogy of Stodolsky and Sakurai. The data on the K*p channel show evidence of both pseudo scalar and vector exchange.</p> <p>Cross-sections for the final state pK⁺��+��- shows a strong contribution from the quasi-two body channel K*���. This reaction is also very peripheral even at threshold. The decay angular distributions indicate the reaction is dominated as at higher momenta by a pion exchange mechanism. The data are also in good agreement with the quark model predictions of Bialas and Zalewski for the K* and ��� decay.</p>

Fundamentos de inform��tica. Ejercicios resueltos de programaci��n en C

I. Ejercicios cortos de programaci��n: - Enunciados. - Soluciones propuestas. II. Ejercicios largos: - Componentes electr��nicos. - H��bitos de consumo: bebidas. - Emisora de radio. - Gasolinera. - Tienda. - Central el��ctrica. - Ladr��n Elca Comayor. - Cumbres de monta��a. - Autopista. - Sala de juegos. - Farolas. - Pueblos de Guip��zcoa. - Olimpiadas. - Ventas S.A. - Accidentes de circulaci��n. - Euskadi Irratia. - San Sebasti��n.

Informatikaren oinarriak. C lengoaian ebatzitako problemak

I. Programazioko ariketa laburrak: - Enuntziatuak. - Soluzioen proposamenak. II. Ariketa luzeak: - Gailu elektronikoak. - Kontsumo ohiturak: edariak. - Irratsaioa. - Gasolindegia. - Denda. - Zentral elektrikoa. - Elca Comayor lapurra. - Medi igoerak. - Autopista. - Joko aretoa. - Farolak. - Herrien arteko distantziak. - Olinpiadak. - Ventas S.A. - Heriozko istripuak. - Euskadi Irratia. - San Sebastianak