Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 709 for “""""Coffee ring"" effect""”.
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Effect of ring tension, face width, and number of rings on piston ring friction
… Dept. of Naval Architecture and Marine Engineering, 1951.
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Coffee-Rings and Glasses: Colloids Out of Equilibrium
… Specifically, the deposition of particles during evaporation and the glass transition are explored. In the first set of experiments, we found that particle shape has a profound effect on particle deposition. We evaporated drops of colloidal suspensions containing micron-sized particles that …
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Nitrogen balance in college women: the effect of coffee on the nitrogen balance
… problem was originally undertaken to observe the effect of the variation of caloric intake on protein use by means of the nitrogen balance experiment. In developing a low protein diet for the above study, coffee was suggested by one of the subjects to make the diet more palatable. This raised the …
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Factors affecting coffee exports in Zambia
This study investigates the factors that affect coffee exports in Zambia. A regression model is postulated based on international trade theory and estimated using SPSS. Given that there was no serious deviation from the Classical Linear Regression Model (CLRM), Ordinary Least Squares (OLS) was used …
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Factors affecting coffee exports in Zambia
This study investigates the factors that affect coffee exports in Zambia. A regression model is postulated based on international trade theory and estimated using SPSS. Given that there was no serious deviation from the Classical Linear Regression Model (CLRM), Ordinary Least Squares (OLS) was used …
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The in vitro effect of a tooth bleaching agent on coffee and wine stained teeth
… will be taken before one group is immersed in coffee and the other in red wine for two weeks. Bleaching of the specimens will be done according to manufacturer’s instructions for two weeks. Color readings will be taken before bleaching, weekly during bleaching and 1 and 2 weeks after the …
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Economic analysis of coffee supply in Kenya
… from the structural functions that underlie the coffee supply, is estimated for Kenyan coffee producers. This is because the standard Nerlovian supply response model is not appropriate for a perennial crop such as coffee. The results of the estimated function are used to estimate the changes in …
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Coffee consumption increases risk of advanced breast cancer among Singapore Chinese women
… support both a protective and risk enhancing effect of coffee compounds on breast cancer development. A few retrospective studies conducted before 1988 also reported inconsistent findings. However, more recent prospective epidemiological data do not support a relationship between coffee intake …
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Studies on extensions of tert-amino effect: Ring-fusion to bridged biaryls and steroids
Studies on extensions of tert-amino effect: Ring-fusion to bridged biaryls and steroids The term t (later tert)-amino effect was introduced by Meth-Cohn and Suschitzky to generalize the thermal isomerization of ortho-substituted tertiary anilines to benzo-fused heterocyclic systems. In type 2 …
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Split Ring Resonator (SRR) based metamaterials
… than that of the wavelength of light. The Split ring resonator (SRR) is such a nanostructure that forms the basic unit of a metamaterial. Since the dimensions of the SRRs are required to be smaller than the resonance wavelength, it becomes critical when response is required at the near infrared …
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The effect of surface finish on piston ring-pack performance in advanced reciprocating engine systems
Frictional losses in the piston ring-pack of an engine account for approximately 20% of the total frictional losses within an engine. Methods of surface texture optimization were investigated to reduce piston ring-pack friction and increase engine brake thermal efficiency. Adverse effects of …
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Novel pillar formation in evaporating poly(ethylene oxide) droplets
Unlike the familiar “ring-stain" formed when spilt coffee drops are left to dry, liquids containing high molecular weight polymer molecules leave a range of other deposit pat terns. In this thesis I observe that aqueous solutions of the polymer poly(ethylene oxide) (PEO) dries to form either the …
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Understanding market demand for agricultural products through consumer research: the coffee example
A theoretical model of coffee consumption in the U.K. is proposed, which is estimated and used to examine the influence of habit formation and advertising in the period 1957-80. This work challenges both the assumption of symmetrical consumer response and the statistical source for measuring coffee …
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Self-Condensing Ring-Opening Metathesis Polymerization
Ring-opening metathesis polymerization (ROMP) is a great tool for synthesizing polyolefin materials with different topologies, including hyperbranched polymers—polymers with high degrees of branching and many end groups. However, hyperbranched polymer synthesis via ROMP is challenging due to …
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The Mesophilic and Thermophilic Anaerobic Digestion of Instant Coffee Waste Waters
An instant coffee factory's physical waste treatment systems and their resulting waste streams were identified and samples of wastewater were analysed to determine the physical and chemical characteristics relevant to anaerobic digestion. Two wastewater types were chosen for treatment by anaerobic …
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Flexural vibration of the incomplete circular ring
The flexural vibration of two incomplete circular rings, approximately 360º, fixed at one end and free at the other, is investigated. One ring lies in the thin ring range. The other ring lies in the borderline range between a thick and thin ring. A theoretical approach is used in an attempt to …
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Landscape and population ecology of ring-necked pheasants
… I collected detailed demographic data on ring-necked pheasants on 14 public and private grasslands in east-central Illinois. I monitored 108 nests, 38 broods, and the survival and habitat use of 108 adult female ring-necked pheasants (Phasianus colchicus) throughout the year between May …
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Pengaruh atribut produk terhadap keputusan pemilihan konsumen pada coffee shop di Kota Malang
… kelompok masyarakat tertentu yang nongkrong di coffee shop. Secara khusus, penelitian ini mengulas upaya yang dilakukan pengelola coffee shop untuk menarik minat berkunjung pelanggannya dengan mengoptimalkan faktor harga, produk, kebersihan dan kualitas layanan. Adapun judul penelitian ini …
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Design and characterization of a low cost dual differential proving ring force sensor utilizing Hall-effect sensors
A novel dual differential hall-effect based proving ring force sensor has been designed, manufactured, and tested. Strain gauge based force sensors are among the most common methods of measuring static and dynamic forces, yet they suffer from a wide array of negative attributes including: high cost …
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