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.
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Showing 1 to 20 of 37 for “"Drying time"”.
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Quality analysis of ultrasonically dried strawberry and comparison to conventional drying methods
Conventional, hot air drying is one of the most commonly used drying methods in the food industry for its simplicity, high productivity, and low capital cost. However, hot air drying has many limitations surrounding energy requirements, processing efficiency, and costs coupled with significant food …
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Predicting drying times of some Burmese woods for two types of solar kilns
Experimental drying studies were made on two types of solar lumber kilns, one an external collector type and the other a semi-greenhouse type. Two charges of green sugar maple lumber (5/4 inches thick) were tested in an external collector solar kiln at the U.S. Forest Products Laboratory, Madison …
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A diffusion-viscous analysis and experimental verification of the drying behavior in nanosilver-enabled low-temperature joining technique
… and binder formulation. It is believed that the drying of the paste during the bonding process plays a critical role in determining the quality of the sintered bond-line. In this study, a model based on the diffusion of solvent molecules and viscous mechanics of the paste was introduced to …
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Direct tablet formation by electrospinning and compaction
… drug particulate matter, minimizing liquid drying time, and enabling a more agile, liquid-based continuous manufacturing process to be utilized for pharmaceutical production. Future work was specified to refine and optimize the process, and improve process control and monitoring in order to …
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Use of Volumetric Heating to Improve Heat Transfer During Vial Freeze-Drying
Freeze-drying (lyophilization) is a drying process which is used to remove water from heat sensitive products, usually for the purpose of preservation. By removing water, the product becomes more stable at room temperature. This is a common process in the pharmaceutical industry because …
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Designing, building, and testing the spin, strip, and stomp mechanism for pharmaceutical tableting
… techniques such as shorter pill dissolution times, airborne drug particulate matter elimination, and shorter liquid drying time, among many others. Therefore, the Novartis MIT Center for Continuous Manufacturing is prioritizing development of electrospinning techniques for producing …
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Evaluating post-harvest practices on the quality and safety of Kona coffee
… reach 12-13% moisture within 4 to 6 days. Sun-drying will reduce both the moisture content and the water activity (aw). Reducing aw below 0.75, especially in the first week of drying, is important for preventing or limiting mold growth. The purpose of this study was to 1) compare drying rates …
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Drying of cellulose nitrate plastic by means of conditioned air
… of the finished product always results during drying. The drying conditions should be studied and improved. The purpose of this investigation was to determine the effects of relative water humidity, convection heat and radiant heat on the drying of cellulose nitrate plastic. The conditions …
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Design of an absorbent and comfortable sanitary napkin for applications in developing countries
… Tests for absorption, comfort, durability, and drying time are measured on materials ranging from foam to traditional cottons both individually and in combination. These tests include microscopy observations, retention and wicking rate, tensile resistance, stiffness, and roughness. Though no …
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A study of the influence of physical parameters on the drying of porous media
… to observe the mass transfer that occurs in the drying of saturated porous media due to bulk flow of gas. The analysis and equations are developed in a one-dimensional perspective, and focus on the convection and evaporation that results. Humidity readings are monitored at various locations and …
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The effect of cyclic wetting and drying on the corrosion rate of steel in reinforced concrete
… corrosion rate may be effectively reduced if the drying time of the concrete during tidal cycles is sufficiently short, thereby reducing the oxygen supply at the level of the embedded steel.
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Untersuchungen zur Gefriertrocknung biologischer Zellen am Beispiel menschlicher Erythrozyten
Freeze-drying is a state of the art process for stabilization of pharmaceutical or biotechnological products. However, a successful preservation of living cells by freeze-drying is still a big challenge. This is mainly due to increased requirements on the product quality, since even smallest …
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Relationship of bacterial infection and stress wave travel time in red oak lumber
… and develop or aggravate ring failure during drying. It also extends the drying time. Bacterial infection is hard to identify before drying without the use of costly, time- consuming tests. Thus, there is a need for an inexpensive, rapid and accurate method for the identification that can be …
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Evaluation of Methods to Control Mold on Hardwood Pallets
… project were:<br />1.����To compare the drying cost and drying time for oak and poplar pallets for the following mold mitigation strategies for hardwood pallets: air drying, forced air drying (fan shed), kiln drying to 25% moisture content and chemical treatment, and<br …
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In-situ Study of Single Pharmaceutical Granule Drying using Synchrotron X-ray Imaging
The drying process of wetted granules using common methods such as fluidized bed drying is a key unit operation in the pharmaceutical tableting industry. To ensure homogeneity and product quality for a wide range of formulations in the final tableted product, the monitoring of changes to an …
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Simultaneous collection of sulfur dioxide and nitrogen oxides via spray drying: Using sodium-based and calcium-based sorbents with select additives
… H$\sb2$O$\sb{(\ell)}$ evaporation increased the drying time of the droplet and thus enhanced the removal efficiencies of SO$\sb2$ and NO in a spray dryer. The SPRAYMOD-Y predictions agreed well with the experimental results.
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Large area cellulose nanocrystal self-assembly: towards sustainable pigments
… properties, the casting parameters and drying time relate to the optical properties of the produced films. To validate the use of such materials for pigment preparation, I develop a protocol to produce a series of coloured microparticles from R2R-cast CNC films. The optical properties of …
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Single molecule tracking studies of solvent-swollen microdomains in cylinder-forming polystyrene-Poly (ethylene oxide) diblock copolymer films
… SRB molecules are measured at different drying times to assess the microdomain radius and permeability. These parameters, on average, gradually decrease with an increase in drying time; however the trend differs slightly from one solvent system to another. A sharp decrease of microdomain …
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Moisture Gradient Measurement During Kiln Drying of Red Oak
The key to improving drying quality and reducing drying time and energy consumption lies in understanding and controlling moisture movement during drying. As wood dries, strains and stresses develop as a result of restraints imposed by moisture gradients and differential shrinkage in wood. So …
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Water conservation methods to conserve the High Plains aquifer and Arikaree River Basin: a case study on the Arikaree River
… with the deepest pool in the upper segment drying in 8 to 12 years. In the second scenario, aerial photographs identified 18 irrigation wells, currently in operation within the alluvial aquifer that could be removed. This scenario could extend the projected pool dry up time to 30 years. The …
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