Увійти

Готові списки джерел за темами / Chemical clocks / Дисертації

Щоб переглянути інші типи публікацій з цієї теми, перейдіть за посиланням: Chemical clocks.

Дисертації з теми "Chemical clocks"

Автор: Grafiati

Опубліковано: 10 березня 2023

Оновлено: 31 липня 2025

Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями

Оберіть тип джерела:

Ознайомтеся з топ-33 дисертацій для дослідження на тему "Chemical clocks".

Біля кожної праці в переліку літератури доступна кнопка «Додати до бібліографії». Скористайтеся нею – і ми автоматично оформимо бібліографічне посилання на обрану працю в потрібному вам стилі цитування: APA, MLA, «Гарвард», «Чикаго», «Ванкувер» тощо.

Також ви можете завантажити повний текст наукової публікації у форматі «.pdf» та прочитати онлайн анотацію до роботи, якщо відповідні параметри наявні в метаданих.

Переглядайте дисертації для різних дисциплін та оформлюйте правильно вашу бібліографію.

1

Lee, Ho-Hsin. "Gas-phase chemical models of interstellar molecular clouds /." The Ohio State University, 1997. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487948440824473.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

2

Wilkins, Anna Katharina. "Sensitivity analysis of oscillating dynamical systems with applications to the mammalian circadian clock." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/42944.

Повний текст джерела

Анотація:

Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 2008.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Includes bibliographical references (p. 227-234).<br>The work presented in this thesis consists of two major parts. In Chapter 2, the theory for sensitivity analysis of oscillatory systems is developed and discussed. Several contributions are made, in particular in the precise definition of phase sensitivities and in the generalization of the theory to

Стилі APA, Harvard, Vancouver, ISO та ін.

3

Munger, James William Hoffman Michael R. Hoffman Michael R. "The chemical composition of fogs and clouds in southern California /." Diss., Pasadena, Calif. : California Institute of Technology, 1989. http://resolver.caltech.edu/CaltechETD:etd-02132007-152409.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

4

Nejad, Lida A. M. "Time-dependent chemical kinetic models of circumstellar envelopes and interstellar clouds." Thesis, University of Manchester, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.702324.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

5

Minelli, Alice <1994&gt. "Chemical composition of Milky Way satellites: Magellanic Clouds and Sagittarius dwarf galaxy." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2022. http://amsdottorato.unibo.it/10313/1/PhDThesis_AliceMinelli.pdf.

Повний текст джерела

Анотація:

This PhD project is aimed at investigating the chemical composition of the stellar populations in the closest satellites of the Milky Way (MW), namely the Large and Small Magellanic Cloud (LMC and SMC, respectively) and the remnant of the Sagittarius (Sgr) dwarf spheroidal galaxy. Their proximity allows us to resolve their individual stars both with spectroscopy and photometry, studying in detail the characteristics of their stellar populations. All these objects are interacting galaxies: LMC and SMC are in an early stage of a minor merger event, and Sgr is being disrupted by the tidal field o

Стилі APA, Harvard, Vancouver, ISO та ін.

6

Szűcs, László [Verfasser], and Simon [Akademischer Betreuer] Glover. "Chemical evolution from diffuse clouds to dense cores / László Szűcs ; Betreuer: Simon Glover." Heidelberg : Universitätsbibliothek Heidelberg, 2015. http://d-nb.info/1180301870/34.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

7

Morisawa, Yusuke. "Spectroscopic study of some chemically significant molecules in molecular clouds." 京都大学 (Kyoto University), 2005. http://hdl.handle.net/2433/144599.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

8

Balakrishnan, Kaushik. "On the high fidelity simulation of chemical explosions and their interaction with solid particle clouds." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/34672.

Повний текст джерела

Анотація:

High explosive charges when detonated ensue in a flow field characterized by several physical phenomena that include blast wave propagation, hydrodynamic instabilities, real gas effects, fluid mixing and afterburn effects. Solid metal particles are often added to explosives to augment the total impulsive loading, either through direct bombardment if inert, or through afterburn energy release if reactive. These multiphase explosive charges, termed as heterogeneous explosives, are of interest from a scientific perspective as they involve the confluence and interplay of various additional physica

Стилі APA, Harvard, Vancouver, ISO та ін.

9

Ahlvind, Julia. "Isochrone and chemical ages of stars in the old open cluster M67." Thesis, Uppsala universitet, Observationell astrofysik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-434634.

Повний текст джерела

Анотація:

The open cluster Messier 67 is known to have chemical composition, metallicity and age (~ 4 Gyr) close to the Sun. Therefore, it is advantageous for stellar physical studies and of stellar evolution, in particular for solar like stars within the cluster. This work considers three such stars, the formerly studied solar twin M67-1194 and two more recently suggested solar twins M67-1787 & 2018. Most solar twins show a ratio of volatile to refractory elements that systematically depart from the Sun’s. Our targets do not follow this trend as closely. Their composition is closer to the Sun and t

Стилі APA, Harvard, Vancouver, ISO та ін.

10

Lin, Xing. "Model studies of rainout, washout and the impact of chemical inhomogeneity on SO₂ oxidation in warm stratiform clouds." Diss., Georgia Institute of Technology, 1990. http://hdl.handle.net/1853/25714.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

11

Schulz, Christiane [Verfasser]. "Secondary organic aerosol in the pristine Amazonian atmosphere: chemical properties, formation pathways, and interactions with clouds / Christiane Schulz." Mainz : Universitätsbibliothek Mainz, 2019. http://d-nb.info/1185711856/34.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

12

Blake, Geoffrey A. Phillips Thomas G. "On the chemical composition of interstellar molecular clouds : a millimeter and submillimeter spectral line survey of OMC-1 /." Diss., Pasadena, Calif. : California Institute of Technology, 1986. http://resolver.caltech.edu/CaltechETD:etd-12092003-145807.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

13

Gómez, González Laura [Verfasser]. "Physical and Chemical Properties of Protocluster Clumps and Massive Young Stellar Objects Associated to Infrared Dark Clouds / Laura Gómez González." Bonn : Universitäts- und Landesbibliothek Bonn, 2012. http://d-nb.info/1044081783/34.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

14

Yu, Elizabeth A. "Investigating Age-Dependent Arthropathy in a Circadian Mutant Mouse Model: A Dissertation." eScholarship@UMMS, 2011. https://escholarship.umassmed.edu/gsbs_diss/544.

Повний текст джерела

Анотація:

Ectopic calcification can cause pain and limit mobility. Studies suggest that circadian genes may play a role in the calcification process. Core circadian genes Clock, Npas2, and Bmal1 are transcription factors that form CLOCK:BMAL1 or NPAS2:BMAL1 transactivator complexes that drive the rhythmic expression of circadian oscillator genes and output genes. Circadian oscillator genes Period1-3 and Cryptochrome1-2 encode proteins that form transcription repressor complexes that feedback to inhibit CLOCK/NPAS2:BMAL1 activity, thus completing the feedback loop that is the basis of the molecular circa

Стилі APA, Harvard, Vancouver, ISO та ін.

15

Thiel, Vivien [Verfasser]. "Small-scale Physical and Chemical Structure of Diffuse and Translucent Molecular Clouds along the Line of Sight to the Galactic Center / Vivien Thiel." Bonn : Universitäts- und Landesbibliothek Bonn, 2019. http://d-nb.info/1188731807/34.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

16

Vaupré, Solenn. "Ionisation des nuages moléculaires par les rayons cosmiques." Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GREAY049/document.

Повний текст джерела

Анотація:

Les rayons cosmiques (RC) ont un rôle fondamental sur la dynamique et l'évolution chimique des nuages moléculaires interstellaires, qui sont le lieu de formation stellaire et planétaire. Les RC sont probablement accélérés dans les enveloppes en expansion des rémanents de supernova (SNR), ainsi les nuages moléculaires situés à proximité peuvent être soumis à d'intenses flux de RC. Les protons relativistes ont principalement deux effets sur les nuages moléculaires : 1) en rencontrant le milieu dense, les protons de haute énergie (>280 MeV) induisent via la désintégration des pions l'émission

Стилі APA, Harvard, Vancouver, ISO та ін.

17

Brosse, Fabien. "Influence de la couche limite convective sur la réactivité chimique en Afrique de l'Ouest." Thesis, Toulouse 3, 2017. http://www.theses.fr/2017TOU30324/document.

Повний текст джерела

Анотація:

Cette thèse porte sur l'influence de la couche limite convective et nuageuse sur la réactivité chimique en Afrique de l'Ouest. Pour répondre à cette question, des simulations à haute résolution (50m) sont réalisées sur le modèle atmosphérique Méso-NH couplé à un mécanisme chimique détaillé représentant la chimie gazeuse et aqueuse. Cette échelle spatiale permet de représenter explicitement les caractéristiques spatiales et temporelles des structures turbulentes. Les thermiques en couche limite sont identifiés à l'aide d'un échantillonnage conditionnel basé sur l'utilisation d'un traceur passif

Стилі APA, Harvard, Vancouver, ISO та ін.

18

MORENZ, Danilo Antonio. "Caracter?sticas de crescimento e valor nutritivo de clones de capim-elefante (Pennisetum purpureum Schum.) manejados sob lota??o rotacionada na esta??o seca." Universidade Federal Rural do Rio de Janeiro, 2011. https://tede.ufrrj.br/jspui/handle/jspui/2130.

Повний текст джерела

Анотація:

Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2017-10-25T16:19:22Z No. of bitstreams: 1 2012 - Danilo Antonio Morenz.pdf: 638093 bytes, checksum: 3b4f1d143b088953006c8246815bb7b1 (MD5)<br>Made available in DSpace on 2017-10-25T16:19:25Z (GMT). No. of bitstreams: 1 2012 - Danilo Antonio Morenz.pdf: 638093 bytes, checksum: 3b4f1d143b088953006c8246815bb7b1 (MD5) Previous issue date: 2011-11-20<br>CNPq<br>The objective of this study was to evaluate the variables related to the heights in the pre and post grazing sward, the production of dry biomass of green forage, morphological compos

Стилі APA, Harvard, Vancouver, ISO та ін.

19

Munier, Laurent. "Simulations expérimentale et numérique des effets retardés d'une explosion en milieu clos et en présence de produits liquides." Thesis, Aix-Marseille 1, 2011. http://www.theses.fr/2011AIX10091/document.

Повний текст джерела

Анотація:

Peut-on modéliser de manière fiable les effets collatéraux (en termes de quantité ou concentration de produits éjectés) et les conséquences d’une explosion en milieu clos, et en présence de produits chimiques liquides ? Pour répondre à cette vaste question, qui soulève spontanément de nombreux sous-problèmes, les travaux de thèse se sont déroulés en trois temps : 1/une étude qualitative et semi-quantitative du scénario général, afin de comprendre le déroulement chronologique des évènements, et d’émettre les hypothèses nécessaires à une modélisation, 2 /L’étude systématique des effets d’une exp

Стилі APA, Harvard, Vancouver, ISO та ін.

20

Santos, Deborah Rodrigues de Souza. "Avaliação tecnológica de clones-elite de Eucalyptus spp., crescendo no Estado de Goiás: qualidade do lenho para produção de polpa celulósica Kraft." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/11/11150/tde-10102018-121537/.

Повний текст джерела

Анотація:

O setor florestal brasileiro prevê forte expansão das florestas plantadas de eucalipto, o que torna essencial estudos que indiquem materiais genéticos superiores e adaptados a novas fronteiras regionais. O estado de Goiás tem se destacado como um território com grande potencial ao estabelecimento e expansão de novos plantios. Nesse sentido, o presente trabalho tem como objetivo a avaliação tecnológica de clones-elite de Eucalyptus spp., oriundos de um teste clonal instalado no município de Luziânia- GO, com foco na qualidade do lenho para produção de polpa celulósica Kraft. Do total de materia

Стилі APA, Harvard, Vancouver, ISO та ін.

21

Vidal, Thomas. "Revisiting the chemistry of star formation." Thesis, Bordeaux, 2018. http://www.theses.fr/2018BORD0151/document.

Повний текст джерела

Анотація:

Les études astrochimiques de la formation stellaire sont particulièrement importantes pour la compréhension de l'évolution de l'Univers, du milieu interstellaire diffus à la formation des systèmes stellaires. Les récentes avancées en matière de modélisation chimique permettent d'apporter de nouveaux résultats sur le processus de formation stellaire et les structures mises en jeu. L'objectif de ma thèse était donc d'apporter un regard neuf sur la chimie de la formation stellaire en utilisant les récentes avancées sur le modèle chimique Nautilus. J'ai pour cela étudié l'évolution de la chimie du

Стилі APA, Harvard, Vancouver, ISO та ін.

22

Herrmann, Anders. "Structure and Activity of Circular Plant Proteins : Cytotoxic Effects of Viola Cyclotides." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-8283.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

23

Joblin, Yaël. "Elaboration d’un microsystème d’analyse de l’air destiné à la détection rapide d’un développement fongique dans les espaces clos." Thesis, Paris Est, 2011. http://www.theses.fr/2011PEST1027/document.

Повний текст джерела

Анотація:

Les champignons sont des biocontaminants courants des environnements intérieurs. De nombreuses études ont démontré leur rôle dans la dégradation des supports que ces microorganismes colonisent tels que les matériaux de construction, les ouvrages ou les œuvres d'art. De plus, ces biocontaminants sont susceptibles d'induire des allergies, des infections, des toxi-infections ou encore des irritations. Depuis 2005, une technique de détection de la croissance fongique, basée sur la recherche de traceurs chimiques spécifiques dans l'air, et un indice de contamination fongique (ICF), ont été développ

Стилі APA, Harvard, Vancouver, ISO та ін.

24

Xie, Zhi. "Modelling genetic regulatory networks: a new model for circadian rhythms in Drosophila and investigation of genetic noise in a viral infection process." Phd thesis, Lincoln University. Agriculture and Life Sciences Division, 2007. http://theses.lincoln.ac.nz/public/adt-NZLIU20070712.144258/.

Повний текст джерела

Анотація:

In spite of remarkable progress in molecular biology, our understanding of the dynamics and functions of intra- and inter-cellular biological networks has been hampered by their complexity. Kinetics modelling, an important type of mathematical modelling, provides a rigorous and reliable way to reveal the complexity of biological networks. In this thesis, two genetic regulatory networks have been investigated via kinetic models. In the first part of the study, a model is developed to represent the transcriptional regulatory network essential for the circadian rhythms in Drosophila. The model

Стилі APA, Harvard, Vancouver, ISO та ін.

25

Casali, Giada. "Galactic archaeology with ages based on chemical clocks." Doctoral thesis, 2021. http://hdl.handle.net/2158/1228473.

Повний текст джерела

Анотація:

In the era of large spectroscopic surveys, high-quality spectra can contribute to our understanding of the Galactic chemical evolution, not only providing high-precision abundances of elements belonging to the different nucleosynthesis channels, but also giving constraints to one of the most elusive quantity in astrophysics, i.e. stellar age. Some abundance ratios, called chemical clocks, have proved to be excellent indicators of the stellar age. We can distinguish them in two families: ratios composed by elements whose surface abundances vary during the stellar evolution, such as [C/N], or

Стилі APA, Harvard, Vancouver, ISO та ін.

26

Brock, Ivan Heinz. "Chemical acoustic emission analysis of the Briggs-Rauscher iodine clock." Thesis, 1995. http://hdl.handle.net/2429/7203.

Повний текст джерела

Анотація:

The oscillations observed in the Briggs-Rauscher Iodine Clock were studied using chemical acoustic emission (CAE) analysis. The experimental system evolved through three separate designs. The first early design employed a batch delivery system and utilized a piezoelectric transducer as the CAE sensor. The second design employed a flow delivery system and the oscillating reaction was monitored simultaneously by CAE, ultraviolet-visible spectrophotometry, and an ion-selective electrode. Sampling periods of 4.0 seconds made this a “low resolution” system. The third design was an optimized v

Стилі APA, Harvard, Vancouver, ISO та ін.

27

Dickens, James E. "Probing chemical evolution in molecular clouds with millimeter-wave observations." 1999. https://scholarworks.umass.edu/dissertations/AAI9920595.

Повний текст джерела

Анотація:

We present results for a study of gas-phase and grain chemical processes in the dense interstellar medium (ISM) using millimeter-wavelength observations of the pure rotational transitions of molecules. We mapped emission from a large number of molecules over a 8.5' x 10' region in the quiescent dark cloud core L134N. Statistical equilibrium calculations were performed to determine the kinetic temperature from observations of NH 3, the molecular hydrogen density from measurements of HC3N, N2H+, and CS, and the chemical abundances. We determined that the cloud can be described by a single kineti

Стилі APA, Harvard, Vancouver, ISO та ін.

28

Munger, James William. "The chemical composition of fogs and clouds in southern California." Thesis, 1989. https://thesis.library.caltech.edu/629/1/Munger_jw_1989.pdf.

Повний текст джерела

Анотація:

<p>Fogs and clouds are frequent occurrences in Southern California. Their chemical composition is of interest due to their potential role in the transformation of sulfur and nitrogen oxides to sulfuric and nitric acid and in the subsequent deposition of those acids. In addition, cloud and fog droplets may be involved in the chemistry of low-molecular-weight carboxylic acids and carbonyl compounds.</p> <p>The major inorganic species in cloud and fogwater samples were NH[4]+, H+, NO[3]-, and SO[4][2-]. Concentrations in fogwater samples were 1-10 x 10[-3] M; pH values ranged from [~]2 to 6.

Стилі APA, Harvard, Vancouver, ISO та ін.

29

Knez, Claudia. "Chemical evolution of ice and gas from molecular clouds to protostars." Thesis, 2006. http://hdl.handle.net/2152/2741.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

30

Jaruga, Anna. "Chemical aspects of cloud - aerosol interactions." Doctoral thesis, 2017. https://depotuw.ceon.pl/handle/item/2038.

Повний текст джерела

Анотація:

In the atmosphere cloud droplets form and grow on aerosol particles - tiny solid or liquid particles suspended in the air. When trapped inside water drops aerosol particles are affected by the processes happening in clouds such as collisions between water drops or aqueous phase chemical reactions inside water drops. It can be said that clouds and aerosol particles coexist, continuously changing each others properties. This dissertation studies the interactions between aerosol particles and water drops in warm (i.e. ice free) boundary layer clouds. The main focus is on the collisions between

Стилі APA, Harvard, Vancouver, ISO та ін.

31

Blake, Geoffrey A. "On the Chemical Composition of Interstellar Molecular Clouds: A Millimeter and Submillimeter Spectral Line Survey of OMC-1." Thesis, 1986. https://thesis.library.caltech.edu/4890/1/Blake_ga_1986.pdf.

Повний текст джерела

Анотація:

<p>The same basic principles govern the chemical and physical evolution of systems throughout the universe. However, the dissimilar conditions on the Earth and in the interstellar medium lead to remarkably different chemical compositions for these two environments. While less familiar than terrestrial chemistry, the study of the chemical composition of the interstellar medium is important because it bears directly on the understanding of phenomena as diverse as star formation, galactic structure and dynamics, and the cosmological origin of the universe, in addition to providing a unique opport

Стилі APA, Harvard, Vancouver, ISO та ін.

32

Syed, Rehana Naz. "Chemical and Genetic Diversity in Sesame (Sesamum indicum L.)." Doctoral thesis, 2011. http://hdl.handle.net/11858/00-1735-0000-000D-EF3B-E.

Повний текст джерела

Анотація:

Biologische Diversität existiert sowohl zwischen mehreren Arten als auch innerhalb einer Art, innerhalb von Populationen und Individuen einer Population. Die intraspezifische Diversität wurde bislang ausgiebig auf der Ebene des Genoms untersucht. Sie ist im Kontext metabolischer Zusammenhänge in Pflanzen bisher kaum untersucht und es existieren nur wenige Veröffentlichungen zu diesem Thema. Uns sind bisher keine Publikationen zu Phytohormonen in Sesam bekannt. Neben dem wissenschaftlichen Interesse an der metabolischen Diversität in Sesam, spielen Stresshormone eine wichtige Rolle in der pflan

Стилі APA, Harvard, Vancouver, ISO та ін.

33

Parisi, María Celeste. "Propiedades astrofísicas de cúmulos estelares y estrellas del campo de la Nube Menor de Magallanes /." Doctoral thesis, 2011. http://hdl.handle.net/11086/156.

Повний текст джерела

Анотація:

Tesis (Doctor en Astronomía)--Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física, 2011.<br>En esta tesis se han determinado las metalicidades y velocidades radiales de 15 cúmulos estelares de la Nube Menor de Magallanes y de los campos estelares circundantes a los mismos, haciendo uso de espectros en la región del CaII obtenidos con el 'Very Large Telescope' (Paranal - Chile). Por otra parte las edades de los cúmulos han sido derivadas a partir de fotometría PSF realizada sobre imágenes en los filtros V e I obtenidas con el mismo telescopio. Esta información ha sido u

Стилі APA, Harvard, Vancouver, ISO та ін.

Ми пропонуємо знижки на всі преміум-плани для авторів, чиї праці увійшли до тематичних добірок літератури. Зв'яжіться з нами, щоб отримати унікальний промокод!