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 20 for “"Process yield"”.
-
DNA Purification Process Optimization at Life Technologies Corporation
… on optimizing the plasmid DNA purification process at Life Technologies. These plasmids are designed to code for specialized proteins used by research universities, national laboratories, or research companies. Once cultivated and harvested, the plasmids must be analyzed for quality and …
-
Cycle-to-cycle control of reconfigurable die sheet metal forming
… as applied to a sheet metal stretch forming process. More specifically, it attempts to validate the use of cycle to cycle (CtC) control for a multiple input-multiple output process. The work presented in this thesis attempts to answer some basic manufacturing questions. The first is, "Can a …
-
Using design of experiments to improve a batch chemical process
… The goal of this project is to improve overall process yield by modifying the upstream process. The focus is on using a batch process to generate a high-density cell culture and then infecting said culture. This thesis presents the approach of using a Design of Experiment series to change a …
-
DEVELOPMENT OF NOVEL DESIGN AND CONTROL APPROACHES FOR INTEGRATED CRYSTALLIZATION OPERATION AND SYSTEMS
… and control pharmaceutical crystallization processes so that the desired process requirement and product critical quality attributes (CQAs), including process yield, crystal purity, crystal size distribution (CSD), crystal shape and polymorphic form can be obtained. Studies about cooling or …
-
Deformation behavior of cylindrical block copolymer bicrystals : pathway to understanding block copolymer grain boundaries
… copolymer (BCP), produced by a roll-casting process; yield various types of pure tilt grain boundaries. The study of the deformation of the bicrystals, each containing one grain boundary, enables a deeper understanding of the influences grain boundaries and the incompatibilities between them …
-
Cryomilling of Aluminum-based and Magnesium-based Metal Powders
… by x-ray diffraction. A novel consolidation process called high shear powder consolidation (HSPC) is used to densify as-received and as-milled powders with minimal growth. The construction of a cryomill, along with a modification for improving process yield, has provided a platform for the …
-
Capacitive displacement sensing for the Nanogate
… redesigning the Nanogate package and fabrication process to integrate the capacitive sensing electrodes, as well as to improve the process yield. The development of capacitive sensing electronics for the Nanogate involved the design of an analog front-end to convert capacitance to voltage and a …
-
Heat transfer in silicon - experiments and simulation
… is the key semiconductor material, and thermal processing is the traditional method that is used in semiconductor processing. In this research, we can predict the temperature of the silicon wafer during heating. This ability to predict wafer temperature during semiconductor processing will …
-
The addition of a calender machine to a pyrolytic graphite sheet production plant
This thesis documents the process and challenges of adding a new calender machine to AvCarb Material Solutions' pyrolytic graphite production plant. Before the machine could be used for mass production, several experiments needed to be conducted to better understand the capabilities of the machine. …
-
Low Pressure and Short-Time Silver-Sintering for Power Modules
… However, the traditional silver sintering process generally has the problems of long sintering time and high auxiliary pressure, which not only restricts the industrial production efficiency, but also may cause mechanical damage to the brittle chip. In this study, an innovative low-pressure …
-
In-Situ Resource Utilization of Pectin and Bosch Carbon for Energy Storage
… formats. This study presents an innovative process simplification and combination with a de-esterification technique to produce repeatable pectin characteristics over ranges of functional group concentration, process yield, and biopolymer molecular weight. Pectin with a low degree of …
-
Studio Sperimentale e Modellazione della Separazione di Proteine con Membrane di Affinità
… like binding capacity, selectivity and process yield have been studied in detail in order to find the optimal conditions for binding and elution steps. The membranes have been used over several complete chromatographic cycles to evaluate the effects of ageing and of membrane regeneration …
-
Technology Agnostic Analysis and Design for Improved Performance, Variability, and Reliability in Thin Film Photovoltaics
… however, requires significant improvements in process yield, and operational reliability. In order to address these challenges, comprehensive understanding of factors affecting panel yield, and predictive models of performance reliability are needed. This has proved to be especially challenging …
-
Understanding surface and sub-surface phenomena in nickel-based superalloy castings
… of these expensive materials is to increase process yield, and thus lower unit costs Investment casting of turbine blades is highly challenging; despite tight process control some variability in manufacturing operations results in scrapped components. Internal surface melting was found on …
-
Control of polymorphism in continuous crystallization
… Albeit the increasing number of studies on the process dynamics in continuous crystallization, in particular in yield improvement and impurity separation, the research community lacks the systematic understanding of the control of polymorphism in continuous crystallization. Variations in the …
-
Development of monitoring and control systems for biotechnological processes
… of biological organisms in manufacturing processes, its areas of application are broad and include the pharmaceuticals, agri-food, energy, and even waste treatment. The implication of living microorganisms represents the common element in all bioprocesses. Cell cultivations is undoubtedly …
-
Chiral resolution control in batch and continuous crystallization processes for a conglomerate forming compound
… In a preferential crystallization process, supersaturated racemic (equal mixture of both enantiomers) solution is seeded with pure crystals of the preferred enantiomer. Over time these crystals grow, removing the preferred enantiomer from solution whilst the unwanted enantiomer …
-
Investigación sobre la eliminación de olores en depuradoras
… of investigation is about eletrocoagulation as a process of treatment of odours in wastewater, in view of the effects produced in society through emission of odours in wastewater treatment plants. In this context, the factors that stand out as a conscientization of population, increase the number …
-
Fermentation of vitamin K2 (menaquinone-7): Development of an optimal fermentation process to selectively enhance the production of the biologically significant all-trans isomer
… isomer composition resulting from fermentation processes has not been elucidated. In light of the fact that only all-trans MK-7 sustains biological activity and fermentation-based synthesis is superior from both the viewpoint of consumers and the environment, the MK-7 isomer profile attained …