Log in

Relevant bibliographies by topics / Degradation state of a bearing / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Degradation state of a bearing.

Dissertations / Theses on the topic 'Degradation state of a bearing'

Author: Grafiati

Published: 28 June 2021

Last updated: 29 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'Degradation state of a bearing.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Popara, Nikola. "Využití umělé inteligence k monitorování stavu obráběcího stroje." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-444960.

Full text

Abstract:

This thesis is focus on monitoring state of machine parts that are under the most stress. Type of artificial intelligence used in this work is recurrent neural network and its modifications. Chosen type of neural network was used because of the sequential character of used data. This thesis is solving three problems. In first problem algorithm is trying to determine state of mill tool wear using recurrent neural network. Used method for monitoring state is indirect. Second Problem was focused on detecting fault of a bearing and classifying it to specific category. In third problem RNN is used

APA, Harvard, Vancouver, ISO, and other styles

2

Solano, Alvarez Wilberth. "Microstructural degradation of bearing steels." Thesis, University of Cambridge, 2015. https://www.repository.cam.ac.uk/handle/1810/249201.

Full text

Abstract:

The aim of the work presented in this thesis is to clarify one of the most fundamental aspects of fatigue damage in bearings steels through critical experiments, in particular whether damage in the form of cracks precedes hard “white-etching matter" formation, which is carbon supersaturated nanoscaled ferrite. Heat treatments have been designed to create four different crack types and distributions: scarce martensite plate cracks, fine grain boundary cracks, abundant martensite plate cracks, and surface cracks. Subsequent rolling contact fatigue experiments showed that the amount of hard white

APA, Harvard, Vancouver, ISO, and other styles

3

Patel, Prakash Shashikant. "Diffusion problems and degradation of bearing overlays." Thesis, London Metropolitan University, 1989. http://repository.londonmet.ac.uk/3192/.

Full text

Abstract:

The corrosion and degradation of Pb-Sn bearing overlays Is a bilateral process . During service, the lubricant becomes corrosive due to the breakdown of inhibitors with subsequent oxidation occurring at operating temperatures (120-170[degrees]). ...

APA, Harvard, Vancouver, ISO, and other styles

4

Alshimmeri, Fiasael. "Diagnosis of low-speed bearing degradation using acoustic emission techniques." Thesis, Cranfield University, 2017. http://dspace.lib.cranfield.ac.uk/handle/1826/12324.

Full text

Abstract:

It is widely acknowledged that bearing failures are the primary reason for breakdowns in rotating machinery. These failures are extremely costly, particularly in terms of lost production. Roller bearings are widely used in industrial machinery and need to be maintained in good condition to ensure the continuing efficiency, effectiveness, and profitability of the production process. The research presented here is an investigation of the use of acoustic emission (AE) to monitor bearing conditions at low speeds. Many machines, particularly large, expensive machines operate at speeds below 100 rpm

APA, Harvard, Vancouver, ISO, and other styles

5

Swan, Iain Peter. "The efffect of elastomeric bearing degradation on bridge dynamic response." Thesis, Edinburgh Napier University, 2006. http://researchrepository.napier.ac.uk/Output/3800.

Full text

Abstract:

The dynamic response of highway bridges is a topic that has been thoroughly researched over many years. However, understanding of how the dynamic response of bridges is affected by the performance of their bearings over an extended period of time is, at present, not clearly defined. Although health monitoring of bridge structures is relatively advanced, the scope for further research is wide. The study presented in this thesis contains research on plate structures; ranging from a simple Euler-Bernoulli method to determine natural frequencies; modal analysis of a plate structure in the laborato

APA, Harvard, Vancouver, ISO, and other styles

6

Elliott, David. "Corrosion inhibitors for load-bearing steels." Thesis, University of Oxford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.303645.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Shields, Andrew James. "Discharge degradation of mica." Thesis, Glasgow Caledonian University, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.370768.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Zambre, Nirupama. "Degradation Rate Modeling of Ohio State Bridges." University of Cincinnati / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1205935821.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Prescott, Robert. "The corrosion of alloys and metals in high-temperature chlorine-bearing gases." Thesis, University of Manchester, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.236260.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Boudghene, Stambouli Amine. "Degradation mechanism in zinc sulphide/manganese electroluminescent displays." Thesis, University of Nottingham, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328389.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Lawrence, Bryce T. "Recreation related degradation in Kansas state parks : applying GIS models." Thesis, Manhattan, Kan. : Kansas State University, 2005. http://hdl.handle.net/2097/74.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Arnott, Stephanie Helena Louise. "Ultrasonic evaluation of the degradation state of marine archaeological wood." Thesis, University of Southampton, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.406037.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Al-Masri, Y. S. "Adaptive state estimation compared with proportional navigation for bearing-only missile guidance." Thesis, Cranfield University, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.373969.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Powell, David C. "Characterization of Iron-Bearing Solids Used by Naturally-Occurring Microbes in the Anaerobic Degradation of Hydrocarbons." W&M ScholarWorks, 2000. https://scholarworks.wm.edu/etd/1539617754.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Dick, Caroline Macleod. "A solid state NMR investigation of char forming processes in polymer degradation." Thesis, University of Strathclyde, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.249132.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Tinmanee, Radaduen. "The role of pharmaceutical excipients in the solid-state degradation of Gabapentin." Diss., University of Iowa, 2015. https://ir.uiowa.edu/etd/1919.

Full text

Abstract:

Drug instability in solid dosage forms includes chemical or physical processes involving covalent or polymorphic transformations wherein different polymorphs possess crystal structure differences. Gabapentin chemically degrades by intramolecular cyclization to gabapentin-lactam (lactam) in the solid-state. Additionally, gabapentin undergoes polymorphic solid-state transformations. A kinetic model was developed to describe the environmental and excipient effects on chemical and physical instability associated with milling induced stress and subsequent storage under controlled temperature and hu

APA, Harvard, Vancouver, ISO, and other styles

17

Cornelius, Karl. "Radiolytic degradation of organic pesticides : a pulse radiolysis and steady state study." Title page, abstract and contents only, 1998. http://web4.library.adelaide.edu.au/theses/09PH/09phc814.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

PETERS, MANUEL JACQUES HELENA. "Innovative techniques for the assessment of the degradation state of metallic artefacts." Doctoral thesis, Politecnico di Torino, 2021. http://hdl.handle.net/11583/2950500.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Prudent-Phillip, Marie Patricia. "Low-income housing, the environment and the state : the case of St. Lucia." Thesis, Royal Holloway, University of London, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.325235.

Full text

Abstract:

The convening of the Earth Summit in Rio de Janeiro in June 1992 represented a major milestone in the global debate on environment and development. This thesis, however, is not concerned about the broad views and perspectives advanced by developed and developing countries. Rather, the focus is at a much more micro level. The thesis examines the relationship between the environment and one aspect of development, namely, housing. The discussion centres on environmental conditions in low-income communities in a developing country: St. Lucia. This is really the reality of the debate within the bou

APA, Harvard, Vancouver, ISO, and other styles

20

Kuznetov, Alexandru Marius. "An investigation of the steady-state performance of a pressurized air wave journal bearing." Toledo, Ohio : University of Toledo, 2010. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=toledo1262985839.

Full text

Abstract:

Thesis (M.S.)--University of Toledo, 2010.<br>Typescript. "Submitted to the Graduate Faculty as partial fulfillment of the requirements for the Master of Science degree in Mechanical Engineering." "A thesis entitled"--at head of title. Title from title page of PDF document. Bibliography: p. 51-56.

APA, Harvard, Vancouver, ISO, and other styles

21

Juhlin, Olof. "Modeling of Battery Degradation in Electrified Vehicles." Thesis, Linköpings universitet, Fordonssystem, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-134114.

Full text

Abstract:

This thesis provides an insight into battery modeling in electric vehicles which includes degradation mechanisms as in automotive operation in electric vehicles. As electric vehicles with lithium ion batteries increase in popularity there is an increased need to study and model the capacity losses in such batteries. If there is a good understanding of the phenomena involved and an ability to predict these losses there is also a foundation to take measures to minimize these losses. In this thesis a battery model for lithium ion batteries which includes heat dissipation is used as groundwork. Th

APA, Harvard, Vancouver, ISO, and other styles

22

Al-Achkar, Mohamed. "Efficiency enhancement and degradation processes in Cuâ†xS/CdS thin film solar cells." Thesis, University of Hull, 1990. http://hydra.hull.ac.uk/resources/hull:3703.

Full text

Abstract:

An investigation has been made into the structure and properties of polycrystalline CuxS-CdS solar cells in order to develop an improved understanding of some of the processes which lead to unsatisfactory reproducibility and long term stability of the characteristics of these devices. The cells studied during this project were fabricated using vacuum evaporation for production of the CdS base layer and the well known chemical exchange process in a CuCl solution for formation of the CuxS layer. In view of the non-uniform thickness of the CuxS layer and non-planar structure of the Cu, S-CdS inte

APA, Harvard, Vancouver, ISO, and other styles

23

Vahdat, Laleh. "Factors influencing the rate of degradation of Amoxycillin sodium and potassium clavulanate in the liquid and frozen states." Thesis, Curtin University, 2000. http://hdl.handle.net/20.500.11937/324.

Full text

Abstract:

Kinetics of the reactions of amoxycillin sodium and potassium clavulanate alone and in combination were investigated in the liquid and frozen states at selected pH values of 2.0, 4.6 and 7.0. A stability indicating HPLC assay was developed to perform simultaneous quantification of these compounds validated under stressed conditions.Amoxycillin and clavulanate degradation obeyed first-order kinetics under all conditions of this study. The effect of temperature, buffer, concentrations and complexation were investigated. Both compounds showed acceleration in rates due to general acid catalysis fr

APA, Harvard, Vancouver, ISO, and other styles

24

Shrestha, Prakash. "Study of the dielectric degradation of XLPE and EPR power cables by switching impulses." Master's thesis, Mississippi State : Mississippi State University, 2008. http://library.msstate.edu/etd/show.asp?etd=etd-08212008-151448.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Vahdat, Laleh. "Factors influencing the rate of degradation of Amoxycillin sodium and potassium clavulanate in the liquid and frozen states." Curtin University of Technology, School of Pharmacy, 2000. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=9984.

Full text

Abstract:

Kinetics of the reactions of amoxycillin sodium and potassium clavulanate alone and in combination were investigated in the liquid and frozen states at selected pH values of 2.0, 4.6 and 7.0. A stability indicating HPLC assay was developed to perform simultaneous quantification of these compounds validated under stressed conditions.Amoxycillin and clavulanate degradation obeyed first-order kinetics under all conditions of this study. The effect of temperature, buffer, concentrations and complexation were investigated. Both compounds showed acceleration in rates due to general acid catalysis fr

APA, Harvard, Vancouver, ISO, and other styles

26

Oyedeji, Ayodele A. "Impacts of selected leguminous tree species and kaolinite pre-amendment on oil-contaminated soil for bioremediation in the oil-bearing region of Nigeria." Thesis, University of Wolverhampton, 2016. http://hdl.handle.net/2436/609041.

Full text

Abstract:

This study investigates the impacts of selected Leguminous Tree Species (LTS) and kaolinite pre-amendment on oil-contaminated soil. It covered assessment of different levels of contamination (0, 25, 50, 75 and 100 ml in 4000 g soil; which represents the degree of light crude oil spillage concentration as 0.0, 0.63, 1.25, 1.88 and 2.5 %v/w) on the growth performance of Albizia adianthifolia, Albizia odoratissima, Bauhinia monandra, Delonix regia, Peltophorum pterocarpum and Tetrapleura tetraptera LTS investigated. Percentage germination, seedling height, seedling girth, number of leaves and num

APA, Harvard, Vancouver, ISO, and other styles

27

Sawangchan, Phawanan. "The effect of aggregation state on the degradation kinetics of Amphotericin B in aqueous solution." Diss., University of Iowa, 2017. https://ir.uiowa.edu/etd/5992.

Full text

Abstract:

Amphotericin B (AmB) is an amphiphile antifungal agent composed of lipophilic and hydrophilic structures and is known to aggregate in aqueous solution. The effect of substrate aggregation on the degradation kinetics of aqueous AmB was studied. Aggregation state of AmB (0.0108 mM) in 10.0%v/v methanol aqueous solutions were pH dependent. The dissociation equilibrium constant (Kd) values suggested that monomeric form was predominant in acidic and alkaline condition and aggregated form appeared predominantly in neutral condition. At methanol concentration above 35.0%v/v, 0.0108 mM AmB in reaction

APA, Harvard, Vancouver, ISO, and other styles

28

Jackson, Lauren W., and Barry M. Pryor. "Degradation of aflatoxin B1 from naturally contaminated maize using the edible fungus Pleurotus ostreatus." BIOMED CENTRAL LTD, 2017. http://hdl.handle.net/10150/625197.

Full text

Abstract:

Aflatoxins are highly carcinogenic secondary metabolites that can contaminate approximately 25% of crops and that cause or exacerbate multiple adverse health conditions, especially in Sub-Saharan Africa and South and Southeast Asia. Regulation and decontamination of aflatoxins in high exposure areas is lacking. Biological detoxification methods are promising because they are assumed to be cheaper and more environmentally friendly compared to chemical alternatives. White-rot fungi produce non-specific enzymes that are known to degrade aflatoxin in in situ and ex situ experiments. The aims of th

APA, Harvard, Vancouver, ISO, and other styles

29

Axtell, Jonathan Clayton. "Synthesis and reactivity of high oxidation state tungsten and molybdenum olefin metathesis catalysts bearing new imido ligands." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/98598.

Full text

Abstract:

Thesis: Ph. D., Massachusetts Institute of Technology, Department of Chemistry, 2015.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references.<br>Chapter 1 details the synthesis of tungsten imidoalkylidene compounds bearing strongly electron-withdrawing imido ligands. An alternative synthesis involving the treatment of WCl6 with 4 equivalents of N-trimethylsilyl-substituted anilines and subsequent workup with 1,2-dimethoxyethane (DME) has been employed to form complexes of the type W(NAr)2C12(dme); syntheses employing WO2C 2(dme) as the tungsten precursor were unsuccess

APA, Harvard, Vancouver, ISO, and other styles

30

Kothottil, Dinek. "Markov-based Predictive Models For Estimation of Degradation Rates of Bridges in the State of Ohio." University of Cincinnati / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1282569111.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Endicott, Roger A. "Immunoregulation of T-lymphocyte proliferative activity by alveolar macrophages from mice bearing Lewis lung carcinoma tumors." Virtual Press, 1986. http://liblink.bsu.edu/uhtbin/catkey/458971.

Full text

Abstract:

The immune regulatory abilities of alveolar macrophages from C57B1/6 mice bearing a metastatic variant of Lewis lung carcinoma were determined. During early stages of tumor development, or before tumors metastasized to the lungs, alveolar macrophages did not affect or slightly enhanced T-lymphocyte proliferation; as tumor growth progressed, or following tumor metastasis, alveolar macrophages suppressed the T-cell response. Macrophage suppressor activity was probably not mediated by their production of PGE, since macrophages of tumor-bearing mice secreted less 2 PGE than did macrophages of norm

APA, Harvard, Vancouver, ISO, and other styles

32

Elgubshawi, Abdelmoneim A. I. "Soil degradation: Its aspects and modelling: a case study of Northeast Nuba Mountain South Kordofan State, Sudan." Doctoral thesis, Technische Universität Dresden, 2008. https://tud.qucosa.de/id/qucosa%3A23615.

Full text

Abstract:

The study was carried out at Abujubeha area (10? 52 48.17 ‐11? 23 08.79 N and 30? 00 05.99 ‐ 31? 28 04.91’ E) in Northeast Nuba Mountain, South Kordofan region, Sudan. In order to investigate the soil degradation aspects in the study area, its causal, rate per time and mapping; the remote sensing and GIS technologies were used beside the routine soil survey and laboratory analyses. Quantitative information on soils degradation and vegetation cover changes was acquired. Using multi‐spectral satellite imagery the most dynamic land cover types have been able to be mapped with 64% accuracy (Dense

APA, Harvard, Vancouver, ISO, and other styles

33

Oktem, Gozde. "Syntheses Of Benzotriazole Bearing Donor Acceptor Type Random Copolymers For Full Visible Light Absorption." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613535/index.pdf.

Full text

Abstract:

The synthesis and preliminary optoelectronic properties of a series of donor-acceptor (DA) type polymers differing by the acceptor units in the polymer backbone were investigated. Polymers CoP1, CoP2 and CoP3 were designed to yield alternating DA segments with randomly distributed different acceptor units along polymer backbone. The combination of neutral state red colored and neutral state green colored materials resulted in different neutral state colors with respect to their additional acceptor unit. 5,8-Dibromo-2,3-bis(4-tert-butylphenyl) quinoxaline, 5,8-dibromo-2,3-di(thiophen-2-yl)quin

APA, Harvard, Vancouver, ISO, and other styles

34

Mitroka, Susan M. "Modulation of Hydroxyl Radical Reactivity and Radical Degradation of High Density Polyethylene." Diss., Virginia Tech, 2010. http://hdl.handle.net/10919/77137.

Full text

Abstract:

Oxidative processes are linked to a number of major disease states as well as the breakdown of many materials. Of particular importance are reactive oxygen species (ROS), as they are known to be endogenously produced in biological systems as well as exogenously produced through a variety of different means. In hopes of better understanding what controls the behavior of ROS, researchers have studied radical chemistry on a fundamental level. Fundamental knowledge of what contributes to oxidative processes can be extrapolated to more complex biological or macromolecular systems. Fundamental conce

APA, Harvard, Vancouver, ISO, and other styles

35

Zong, Zhixin. "Studies on the mechanisms of solid state and solution instability of drugs." Diss., University of Iowa, 2011. https://ir.uiowa.edu/etd/2795.

Full text

Abstract:

The overarching objective of this thesis is to demonstrate a systematic approach for addressing the instability issues associated with low limit degradants by developing quantitative degradation models that incorporate key instability determinants into predictive equations. Chlorhexidine was used as model compound in aqueous solution to demonstrate the application of the predictive models to issues of formulation design and manufacturing. Chorhexidine degrades to p-chloroaniline, a well-established toxicant, by various pH-dependent pathways. In acidic conditions, the direct formation of p-chlo

APA, Harvard, Vancouver, ISO, and other styles

36

Closas, Farriol Alvar Eduardo. "Burning water : the state, irrigation technology and the production of scarcity in Spain." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:afbffe73-fd96-4a9f-9874-ba4fcb4acba5.

Full text

Abstract:

Through studying the adoption of groundwater abstraction technology in the twentieth century in La Mancha, this research investigates the historical role of the state in the development of modern groundwater-fed irrigation in Spain between the 1940s and 1985. By focusing on the Mancha Occidental aquifer and the Las Tablas de Daimiel wetland, this study also scrutinizes how the adoption of groundwater abstraction technology led by the state fed back into the environment through ecosystem degradation and groundwater scarcity at the local and regional level. By examining the historical links betw

APA, Harvard, Vancouver, ISO, and other styles

37

Amiraux, Rémi. "Ice biota degradation in the Arctic environment : impact of bacterial stress state on this material's preservation and burial." Thesis, Aix-Marseille, 2017. http://www.theses.fr/2017AIXM0189/document.

Full text

Abstract:

L’océan Arctique, particulièrement sensible au changement climatique, a vu lors des dernières décennies une augmentation de sa température deux fois supérieure à la moyenne mondiale. Certains scientifiques prévoient la disparition complète de la banquise pour 2050. Du fait de la future disparition des algues de glace et de l’augmentation de la fonte du pergélisol, une réévaluation de leurs contributions respectives au stockage de CO2 est nécessaire. Dans cette étude, nous avons ainsi montré que les algues de glace possèdent une forte capacité de préservation dans les sédiments (et donc de stoc

APA, Harvard, Vancouver, ISO, and other styles

38

Amiraux, Rémi. "Ice biota degradation in the Arctic environment : impact of bacterial stress state on this material's preservation and burial." Electronic Thesis or Diss., Aix-Marseille, 2017. http://www.theses.fr/2017AIXM0189.

Full text

Abstract:

L’océan Arctique, particulièrement sensible au changement climatique, a vu lors des dernières décennies une augmentation de sa température deux fois supérieure à la moyenne mondiale. Certains scientifiques prévoient la disparition complète de la banquise pour 2050. Du fait de la future disparition des algues de glace et de l’augmentation de la fonte du pergélisol, une réévaluation de leurs contributions respectives au stockage de CO2 est nécessaire. Dans cette étude, nous avons ainsi montré que les algues de glace possèdent une forte capacité de préservation dans les sédiments (et donc de stoc

APA, Harvard, Vancouver, ISO, and other styles

39

Junzuo, Zhang. "Villagers and the Chinese State in tree planting campaigns of the 1990s : a case study of a reforestation programme from the subtropical hilly region." Thesis, SOAS, University of London, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343566.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Chu, Thi Thu Ha. "State of the environment and natural resources in Vietnam." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-176875.

Full text

Abstract:

Vietnam is considered as one of the countries having rich resources from forest and sea, with a high average annual rainfall. However, in view of IWRA, water volume per capita annually in Vietnam is lower than the standard for nations having water resources at average level. Vietnam was recognized by the World Wildlife Fund (WWF) as having three out of more than 200 biological zones of the world. Flora and fauna in Vietnam are very rich and abundant, but due to indiscriminate exploitation, along with weak management, biodiversity levels are significantly reduced. This is also one of the causes

APA, Harvard, Vancouver, ISO, and other styles

41

Chu, Thi Thu Ha. "State of the environment and natural resources in Vietnam." Technische Universität Dresden, 2014. https://tud.qucosa.de/id/qucosa%3A28879.

Full text

Abstract:

Vietnam is considered as one of the countries having rich resources from forest and sea, with a high average annual rainfall. However, in view of IWRA, water volume per capita annually in Vietnam is lower than the standard for nations having water resources at average level. Vietnam was recognized by the World Wildlife Fund (WWF) as having three out of more than 200 biological zones of the world. Flora and fauna in Vietnam are very rich and abundant, but due to indiscriminate exploitation, along with weak management, biodiversity levels are significantly reduced. This is also one of the causes

APA, Harvard, Vancouver, ISO, and other styles

42

Ramani, Sathyanarayana. "A Markov-based Analysis of the State of Ohio's Bridge Inventory and Novel Approaches to the Estimation of Bridge Degradation Rates." University of Cincinnati / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1271707686.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

Zhang, Qian. "Pastoralists and the Environmental State : A study of ecological resettlement in Inner Mongolia, China." Doctoral thesis, Stockholms universitet, Kulturgeografiska institutionen, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-115316.

Full text

Abstract:

China's quest for sustainable development has given birth to a set of contested ‘ecological construction’ programmes. Focusing on ‘ecological resettlement’, a type of policy measure in a programme for restoring degraded grasslands, this thesis sets out a critical analysis in opposition to the dominant technical and managerial approaches to understanding environmentalisation. The aim is to draw out the politics of the formulation, implementation and effects of ecological resettlement at and across different scales. The study combines fieldwork, interviews, analysis of policy documents, and stat

APA, Harvard, Vancouver, ISO, and other styles

44

Wu, Xinying. "Reliability Assessment of a Continuous-state Fuel Cell Stack System with Multiple Degrading Components." Ohio University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1556794664723115.

Full text

APA, Harvard, Vancouver, ISO, and other styles

45

Inamoto, Jun-ichi, and Junichi Inamoto. "Electrochemical Characterization of Surface-State of Positive Thin-Film Electrodes in Lithium-Ion Batteries." Kyoto University, 2017. http://hdl.handle.net/2433/226784.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Ibrahim, Ali Hano Abdelnasir. "Assessment of Impacts of Changes in Land Use Patterns on Land Degradation/Desertification in the Semi- arid Zone of White Nile State, Sudan, by Means of Remote Sensing and GIS." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-157627.

Full text

Abstract:

In Sudan, land degradation/desertification (LDD) has devastated large areas and consequently, it includes social, economic, and environmental aspects. LDD results from various factors, including climatic variation and human activities. Probably the LU practices and their changes have contributed to an increase of LDD in that area. Remote sensing technology has become unique and developed tool for providing temporal and spatial information for the LDD research and other environmental aspects. Determination of LDD and its relationship to land use pattern change (LUC) at spatiotemporal scale is r

APA, Harvard, Vancouver, ISO, and other styles

47

Göring, M., A. Seifert, K. Schreiter, P. Müller, and S. Spange. "A non-aqueous procedure to synthesize amino group bearing nanostructured organic–inorganic hybrid materials." Universitätsbibliothek Chemnitz, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-152006.

Full text

Abstract:

Amino-functionalized organic–inorganic hybrid materials with a narrow distributed nanostructure of 2–4 nm in size were obtained by means of a template-free and non-aqueous procedure. Simultaneous twin polymerization of novel amino group containing twin monomers with 2,2′-spirobi[4H-1,3,2-benzodioxasiline] has been applied for this purpose. The amino groups of the organic–inorganic hybrid material are useful for post derivatization<br>Dieser Beitrag ist aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich

APA, Harvard, Vancouver, ISO, and other styles

48

Epshteyn, Albert. "Synthesis, stability, and reactivity of high-oxidation-state pentamethylcyclopentadienyl acetamidinate [beta]-Hydride- or [beta]-Methide-bearing alkyl complexes of zirconium, titanium, and tantalum." College Park, Md. : University of Maryland, 2006. http://hdl.handle.net/1903/4249.

Full text

Abstract:

Thesis (Ph. D.)--University of Maryland, College Park, 2006.<br>Thesis research directed by: Chemistry. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

APA, Harvard, Vancouver, ISO, and other styles

49

Shen, Wenting. "Supramolecular assembly of π-systems using bimetallic CuI-clip bearing organophosporous ligands : control of the sold state organization in crystals and on surfaces". Rennes 1, 2010. http://www.theses.fr/2010REN1S078.

Full text

Abstract:

La polyvalence d’un clip de (CuI)2 basé sur des ligands phosphorés et utilisé afin de contrôler l’organisation à l’état solide d’assemblages supramoléculaires variés des systèmes-π a été étudiée dans ce travail. Le chapitre I présente les résultats obtenus afin de construire des analogues supramoléculaires variés de [2,2]paracyclophanes en interaction πà partir de connecteurs totalement π-conjugués ayant différentes natures et topologies. Dans les chapitres II et III, nous avons étudié les effets de variations structurales centrées sur les systèmes-π. Nous avons ainsi introduit des chaînes al

APA, Harvard, Vancouver, ISO, and other styles

50

Zhou, Yifan. "Asset life prediction and maintenance decision-making using a non-linear non-Gaussian state space model." Thesis, Queensland University of Technology, 2010. https://eprints.qut.edu.au/41696/1/Yifan_Zhou_Thesis.pdf.

Full text

Abstract:

Estimating and predicting degradation processes of engineering assets is crucial for reducing the cost and insuring the productivity of enterprises. Assisted by modern condition monitoring (CM) technologies, most asset degradation processes can be revealed by various degradation indicators extracted from CM data. Maintenance strategies developed using these degradation indicators (i.e. condition-based maintenance) are more cost-effective, because unnecessary maintenance activities are avoided when an asset is still in a decent health state. A practical difficulty in condition-based maintenance

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!