Relevant bibliographies by topics / Removable packing

Academic literature on the topic 'Removable packing'

Author: Grafiati
Published: 10 December 2022
Last updated: 29 January 2023

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Journal articles on the topic "Removable packing"

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Han, Xin, Kazuo Iwama, and Guochuan Zhang. "Online Removable Square Packing." Theory of Computing Systems 43, no. 1 (September 11, 2007): 38–55. http://dx.doi.org/10.1007/s00224-007-9039-0.

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Palmer, Bob L., and Kyle W. Coffey. "Investing and packing removable partial denture bases to minimize vertical processing error." Journal of Prosthetic Dentistry 56, no. 1 (July 1986): 123–24. http://dx.doi.org/10.1016/0022-3913(86)90295-7.

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Babich, Vasilii V., and Julia A. Bistrova. "Clinical features of prosthetic treatment in edentuluos patients." Russian Journal of Dentistry 25, no. 3 (April 19, 2022): 247–52. http://dx.doi.org/10.17816/1728-2802-2021-25-3-247-252.

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BACKGROUND: Social adaptation of patients with complete absence of teeth is associated with fixation and stabilization of prostheses during chewing and speech. It is necessary to take into account the somatic status of the patient, the causes of tooth loss, pay attention to the clinical stages of orthopedic treatment. AIM: Of the study is to increase the efficiency of the orthopedic dentist with full removable prosthetics. MATERIAL AND METHODS: The conditions for obtaining a compression impression are a rigid spoon, silicone impression material of medium viscosity, constant pressure at the time of impression removal. The indication for removing the compression impression is the mucous membrane of the 1st type according to the Supple. The conditions for removing decompression impressions are a perforated individual spoon, liquid-flowing impression material, no pressure on the oral mucosa. The indication for the use of decompression impressions is a thin, atrophied mucous membrane of the oral cavity of the 2nd type according to Supple. It is necessary to use functional impressions combined according to the degree of pressure on the oral mucosa. This implies the peculiarities of manufacturing a rigid base with wax rollers. After determining the central ratio of the jaws and packing the template basis with bite rollers, the doctor applies the impression material differentially to its inner surface. Both templates with bite rollers are inserted into the oral cavity, the doctor controls the central position of the lower jaw, while functional impressions are taken from the upper and lower jaws, taking into account the functional pressure of the patients chewing muscles. This will allow you to evenly distribute the chewing pressure on the oral mucosa. The value of functional rest is determined by measuring two marked points at the base of the nose and on the chin and always exceeds the amount of separation in the state of the central ratio of the jaws by the amount of the interclusal space. Having determined the amount of functional rest, they begin to design the maxillary occlusion pattern, then note the anatomical landmarks. Often, the removal of impressions with a corrective silicone mass is performed in the position of the central ratio. The value of functional rest is determined by a set of anatomical landmarks in a state of maximum possible muscle relaxation in combination with phonetic tests when closing the lips without tension. RESULTS: The determination of the central ratio on rigid bases makes it possible to accurately fix the interalveolar distance. Patients adapt to prosthetic structures faster. The use of a facial arch with an articulator significantly improves the quality of the prosthetic structure, allows you to individualize the anatomical parameters of the patient. When determining the central ratio of the jaws, checking the design of the future prosthesis, cone-beam computed tomography of the temporomandibular joint was used to control the position of the heads of the lower jaw, confirming the correctness of the actions. At the stage of checking the design of the removable prosthesis, phonetic tests were used. CONCLUSION: The use of combined impressions with simultaneous determination of the central ratio of the jaws and control of the position of the heads of the lower jaw can accelerate the process of orthopedic treatment (combining two stages) and adaptation to removable prostheses. To improve speech during treatment, it is necessary to use special phonetic tests that allow you to restore the correct ratio between the jaws, find the optimal position of artificial teeth, determine the boundaries and shape of the basis of the prosthesis and design the optimal prosthesis for each patient.
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Zhilin, S. G., N. A. Bogdanova, and O. N. Komarov. "Experimental simulation of volumetric compacts formation from spherical waxy elements." Izvestiya. Ferrous Metallurgy 65, no. 11 (November 22, 2022): 758–68. http://dx.doi.org/10.17073/0368-0797-2022-11-758-768.

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The growth in metal intensity of industrial production and the volume of consumption of finished metal products determine the relevance of development and research of energy efficient technological processes aimed at reducing costs by reducing the number of operations while maintaining product performance. In mechanical engineering, the problem of obtaining blanks with increased dimensional and geometric accuracy and complex configuration is solved by using a common method of investment casting. Expansion of the use of such technological approach to produce blanks in mechanical engineering is hindered by a number of physical phenomena associated with the thermal expansion of investment and ceramic materials, which leads to an increase in the product final cost. A significant number of defect-forming factors can be eliminated by applying an innovative solution consisting in the formation of porous removable models by compacting mixtures based on waxy materials. This solves the problem of material shrinkage and increases the crack resistance of ceramic molds, which significantly reduces the share of machining in the overall volume of technological operations. Technical tests of the new method have revealed the reason why the machining of castings cannot be completely eliminated at present. The problem mainly lies in elastic response of compacted material of the model mixture, which, in some cases, affects the increase in the compacts size. This paper considers the effect of initial packing of spherical-shaped elements simulating one- and two-component model mixtures on the stress-strain state of a powder body subjected to unilateral compaction in a rigid cylindrical matrix to technologically justified density values. The results of the experiment are presented in the form of stress-strain relations. Preferable conditions of compact formation with minimal values of elastic response of the compacted material are considered.
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Laptev, A. G., T. M. Farakhov, and M. M. Basharov. "Determining efficiency of removal of dispersed phase from gases and modernization of scrubbers using high-performance packings." Safety and Reliability of Power Industry 12, no. 1 (April 10, 2019): 50–55. http://dx.doi.org/10.24223/1999-5555-2019-12-1-50-55.

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A solution to the problem of modeling the removal of a finely dispersed phase from stack gases and process gases at power engineering and petrochemical enterprises using a column apparatus filled with new highly efficient random and structured packings is considered.The use of diffusion and cell models of the flow structure for calculating a concentration profile of particles settling on a liquid fi lm in apparatuses filled with various packings is shown. Accounting for the deposition of finely dispersed particles from gases on the interfacial surface of the liquid fi lm flowing down along the packing is carried out using a bulk source of mass. The model of turbulent-inertial sedimentation of particles is adopted. The main parameters of the model are the coefficient of turbulent migration of particles to the fi lm surface on contact devices, a modified Peclet number with a backmixing coefficient, and the number of complete mixing cells. This approach can be generalized to a wide class of fi lm-type apparatuses for wet gas cleaning with the aim of designing them or choosing modernization options. Expressions are obtained for calculating the efficiency of aerosol separation on packings as well as the required depth of the packed bed for a given efficiency.Results of calculating the efficiency of gas purification from aerosols with the use of various types of packings in scrubbers as well as the required depth of the packed bed for a given efficiency are presented. A graphical dependence of the power spent on gas cleaning in apparatuses with different packings is given. Results of solving the production problem of cleaning pyrogas from coke and tar by circulating water in a modernized scrubber with new highperformance packings are shown.Expressions for calculating the rate of turbulent particle migration for random and structured packings as well as modified Peclet numbers are presented. A distinctive feature of these expressions is the calculation based on the known hydraulic resistance of contact devices.
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Almeida, P. G. S., A. K. Marcus, B. E. Rittmann, and C. A. L. Chernicharo. "Performance of plastic- and sponge-based trickling filters treating effluents from an UASB reactor." Water Science and Technology 67, no. 5 (March 1, 2013): 1034–42. http://dx.doi.org/10.2166/wst.2013.658.

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The paper compares the performance of two trickling filters (TFs) filled with plastic- or sponge-based packing media treating the effluent from an upflow anaerobic sludge blanket (UASB) reactor. The UASB reactor was operated with an organic loading rate (OLR) of 1.2 kgCOD m−3 d−1, and the OLR applied to the TFs was 0.30–0.65 kgCOD m−3 d−1 (COD: chemical oxygen demand). The sponge-based packing medium (Rotosponge) gave substantially better performance for ammonia, total-N, and organic matter removal. The superior TF-Rotosponge performance for NH4+-N removal (80–95%) can be attributed to its longer biomass and hydraulic retention times (SRT and HRT), as well as enhancements in oxygen mass transfer by dispersion and advection inside the sponges. Nitrogen removals were significant (15 mgN L−1) in TF-Rotosponge when the OLRs were close to 0.75 kgCOD m−3 d−1, due to denitrification that was related to solids hydrolysis in the sponge interstices. For biochemical oxygen demand removal, higher HRT and SRT were especially important because the UASB removed most of the readily biodegradable organic matter. The new configuration of the sponge-based packing medium called Rotosponge can enhance the feasibility of scaling-up the UASB/TF treatment, including when retrofitting is necessary.
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Mustafa, Nur Farhana Ajua, Azmi Mohd Shariff, WeeHorng Tay, and Siti Munirah Mhd Yusof. "Effect of Carbon Dioxide (CO2) concentration in the gas feed on Carbon Dioxide Absorption Performance using Aqueous Potassium Carbonate promoted with Glycine." E3S Web of Conferences 287 (2021): 02007. http://dx.doi.org/10.1051/e3sconf/202128702007.

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This paper presented the effect of CO2 concentration in the gas feed to the CO2 absorption performance using a green solvent, potassium carbonate promoted with glycine (PCGLY). Recently, the performance of this solvent (with precipitates) was hindered by its poor mass transfer performance due to the blockage in packings and piping. Therefore, this study focused to study the CO2 absorption performance of non-precipitating potassium carbonate promoted with glycine. This green solvent contains aqueous blend of 15wt% potassium carbonate and 3 wt% glycine. The absorption performance of the solvent was obtained by demonstrated a few experimental works using a bench scale packed absorption column. The packing type was Sulzer metal gauze and the column consisted of six sampling point which located equidistance along the packing.The effect of CO2 concentration at the gas feed was assessed in term of its CO2 removal efficiency and concentration profile along the packing. The study shows the decreasing trend of CO2 removal as CO2 inlet concentration in the gas feed increases. The reason of this behavior is due to the limited reactant of liquid phase to absorb high CO2 concentration in gas phase. The main outcome of this study demonstrated the efficient absorption which can absorb up to 79.24 % of CO2 from natural gas using non-precipitated PCGLY.
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Peng, Yunling, Karunia Adhiputra, Anneline Padayachee, Heather Channon, Minh Ha, and Robyn Dorothy Warner. "High Oxygen Modified Atmosphere Packaging Negatively Influences Consumer Acceptability Traits of Pork." Foods 8, no. 11 (November 13, 2019): 567. http://dx.doi.org/10.3390/foods8110567.

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Current trends in meat packaging have seen a shift from conventional overwrap to vacuum packing (VAC) and modified atmosphere packaging (MAP). The aim of this experiment was to investigate the effects of high oxygen MAP (HiOxMAP) of pork loins compared with vacuum packed (VAC) on eating quality and colour, after storage in simulated illuminated retail display conditions. Pork loins (n = 40) were cut and stored under two packaging methods (HiOxMAP, 80% O2, 20% CO2; VAC) for up to 14 days, with samples taken at various times for measurements. After 7 days of storage, HiOxMAP samples exhibited inferior consumer acceptability for tenderness, flavor, overall liking, quality and re-purchase intention as well as higher shear force and hardness, relative to VAC samples (p < 0.05 for all). Loins stored in HiOxMAP had higher lightness (L*), redness (a*) and yellowness (b*) values at 3 and 7 days, but lower ratio of oxymoglobin to metmyoglobin (oxy/met) values in the meat surface at 14 days of display, relative to VAC samples (p < 0.05 for all). The oxy/met ratio declined from 2.3 to 1.7 between days 3 and 14 of display in HiOxMAP samples (p < 0.05), whereas the ratio was similar and stayed relatively high for VAC samples. VAC samples produced consistently higher colour values (a*, b*, oxy/met) when left to bloom 30 min after removal from packaging (p < 0.05). Lipid oxidation values, measured using thiobarbituric acid reactive substances, in HiOxMAP pork loins, were higher at all time points compared to VAC during the 14 day storage period (p < 0.05). The use of vacuum packing for retail shelves, should be considered as the preferred option, over HiOxMAP.
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Dong, Gui Xia, Qiu Xiang Liu, Li Dong, Shang Jie Li, and Hui Chen. "Relationship between Diamond Particle Size and Thermal Conductivity of Cu-Diamond Composites." Advanced Materials Research 997 (August 2014): 415–18. http://dx.doi.org/10.4028/www.scientific.net/amr.997.415.

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Diamond-copper composites were fabricated by ultrahigh pressure sintering (UHPS) technology. The influence of diamond particle size on the microstructure,relative density and thermal conductivity of composites were investigated. The results indicated that the high relative density of more than 99% diamond-copper composite can be prepared by UHPS method. The composite thermal conductivity dramatically increased with increasing diamond particle size and the highest value of 675W/(m·K) were obtained when using 200μm diamond,which is much higher than those of traditional electronic packing materials. The Cu-diamond composite could fulfill the requirement of heat removal of the high-power electronic packaging devices.
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Fang, H. H. P., C. L. Y. Yeong, K. M. Book, and C. M. Chiu. "Removal of COD and Nitrogen in Wastewater Using Sequencing Batch Reactor with Fibrous Packing." Water Science and Technology 28, no. 7 (October 1, 1993): 125–31. http://dx.doi.org/10.2166/wst.1993.0152.

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An 11-litre sequencing batch reactor (SBR) filled with fibrous packing was found to be very effective for the removal of not only Chemical Oxygen Demand (COD), but also nitrogen from synthetic wastewaters with 250-1034 mg/l of COD and 22-114 mg/l of nitrogen. As compared to the conventional SBR, mis system had a shorter cycle time by skipping the settling step. In addition, denitrification was efficiently conducted in the interior of the ‘bio-pompons', which were formed by the attached growth of biomass on the fibrous packings, even though the bulk of the reactor was under constant aeration. The system was tested at 12 loading conditions, ranging from 0.56 to 4.51 kg-COD/m3-day and from 0.04 to 0.49 kg-NH3−N/m3-day. On average, 95% of COD was removed within 2 h of aeration, while 57% of total nitrogen was removed after a retention time of 4-8 h.
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Dissertations / Theses on the topic "Removable packing"

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楊龍元 and Lung-yuen Christopher Yeong. "Removal of wastewater cod and nitrogen using fibrous packing media." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1991. http://hub.hku.hk/bib/B31210636.

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Yeong, Lung-yuen Christopher. "Removal of wastewater cod and nitrogen using fibrous packing media /." [Hong Kong : University of Hong Kong], 1991. http://sunzi.lib.hku.hk/hkuto/record.jsp?B13193429.

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Ling, Wai-chung Jackson. "Biological nutrient removal in sequencing batch reactors using fibrous packing medium /." Hong Kong : University of Hong Kong, 1996. http://sunzi.lib.hku.hk/hkuto/record.jsp?B17489477.

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Mannon, Adria G. "Preventing Oxidation of Dairy Powders Using Oxygen Removal Packaging." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/35970.

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Three types of dried milk (whole, nonfat, and buttermilk) were packaged in a modified atmosphere with a novel palladium-based oxygen removing catalyst and stored for eight weeks at 50°C. Powders stored in air with no catalyst and powders stored with the catalyst in an atmosphere modified to contain 5.7% hydrogen in nitrogen were evaluated by instrumental, chemical, and sensory methods. Hexanal concentrations were measured weekly using solid phase microextraction (SPME) and gas chromatography (GC) to compare the degrees of oxidation in the powders stored with the catalyst to those stored without it. Color changes were also monitored weekly using Hunterâ s L-, a-, and b-values. At the end of the eight-week period, a paired comparison sensory test was used to ascertain if the catalyst had an effect on odor. Anisidine values were also measured at this point to determine levels of oxidation in the powders. No significant difference was found in levels of oxidation between samples packaged with and without the catalyst in the modified atmosphere. At the end of eight weeks, the average hexanal concentration in the whole milk powder stored with the oxygen scavenger was 1.19 ± 0.20 ppm, while the average hexanal concentration in the air-packed whole milk powder was 1.06 ± 0.08 ppm. The average hexanal concentrations for the buttermilk stored with the catalyst and without were 0.84 ± 0.18 and 0.79 ± 0.15 ppm, respectively. In the nonfat milk powder, the sample stored with the catalyst had an average hexanal concentration of 0.91 ± 0.14 ppm and the sample stored in air without the catalyst had an average hexanal concentration of 0.83 ±0.20 ppm. Difference testing by volunteer sensory panelists also revealed no significant differences. It was expected that the milk powders stored with the catalyst in the modified atmosphere would have lower levels of oxidation and off-odors at the end of the eight weeks. However, the treatment ultimately resulted in no chemical or sensory differences. Thus, the catalyst proved ineffective in the given conditions. This could be due to a loss of the hydrogen required for the catalyst to function as time progressed or a lack of significant oxidation under the conditions employed.
Master of Science in Life Sciences
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Clabaugh, Matthew McConnell. "Nitrification of Landfill Leachate by Biofilm Columns." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/33547.

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Landfill leachate characteristics vary depending on the operation type of the landfill and the age of the landfill. At landfills operated as bioreactors, where leachate recirculation is practiced, leachate ammonia nitrogen concentrations may accumulate to extremely higher levels than during single pass leaching, thereby requiring treatment before final discharge to a receiving system (Onay, 1998). Usually several physical/chemical wastewater treatment technologies are used to treat the leachate. In most cases the COD and BOD are treated, and then nitrification is performed in a separate sophisticated ex situ system. The additional costs of these systems can be very high. The use of a readily available media for in situ nitrification should be considered a prime objective to avoid extra costs. The possibility of removing ammonia nitrogen from bioreactor landfill leachate using trickling filter biofilm technology was studied in four laboratory scale reactors filled with four different types of packing media. The different packing media were examined to see which media is the most efficient at supporting ammonia removal biofilms. The highest efficiency was achieved by a packing media consisting of pine wood chips. The effects of varied concentration loading, varied hydraulic loading, and nitrification inhibitors were studied. Varied ammonia concentration did not have a huge impact on the ammonia removal rates (77-87%) in the reactor with pine wood media. The ammonia removal rates showed a strong dependence on hydraulic loading rate with the lowest loading rate producing the highest removal rates. Landfill leachate from the Middle Peninsula Landfill in Glens, Virginia was determined not to contain nitrifying inhibitors. Using a wood media filter chip and a low hydraulic loading rate was determined to be the best method to remove ammonia nitrogen from landfill bioreator leachate.
Master of Science
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Gibson, Gary Raymond. "Development of a high-speed sensing and detection system for automatic removal of packages with leaky seals from a high-speed food processing and packaging line." Thesis, Queensland University of Technology, 2009. https://eprints.qut.edu.au/48797/1/Gary_Gibson_Thesis.pdf.

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Contamination of packaged foods due to micro-organisms entering through air leaks can cause serious public health issues and cost companies large amounts of money due to product recalls, consumer impact and subsequent loss of market share. The main source of contamination is leaks in packaging which allow air, moisture and microorganisms to enter the package. In the food processing and packaging industry worldwide, there is an increasing demand for cost effective state of the art inspection technologies that are capable of reliably detecting leaky seals and delivering products at six-sigma. The new technology will develop non-destructive testing technology using digital imaging and sensing combined with a differential vacuum technique to assess seal integrity of food packages on a high-speed production line. The cost of leaky packages in Australian food industries is estimated close to AUD $35 Million per year. Contamination of packaged foods due to micro-organisms entering through air leaks can cause serious public health issues and cost companies large sums of money due to product recalls, compensation claims and loss of market share. The main source of contamination is leaks in packaging which allow air, moisture and micro-organisms to enter the package. Flexible plastic packages are widely used, and are the least expensive form of retaining the quality of the product. These packets can be used to seal, and therefore maximise, the shelf life of both dry and moist products. The seals of food packages need to be airtight so that the food content is not contaminated due to contact with microorganisms that enter as a result of air leakage. Airtight seals also extend the shelf life of packaged foods, and manufacturers attempt to prevent food products with leaky seals being sold to consumers. There are many current NDT (non-destructive testing) methods of testing the seal of flexible packages best suited to random sampling, and for laboratory purposes. The three most commonly used methods are vacuum/pressure decay, bubble test, and helium leak detection. Although these methods can detect very fine leaks, they are limited by their high processing time and are not viable in a production line. Two nondestructive in-line packaging inspection machines are currently available and are discussed in the literature review. The detailed design and development of the High-Speed Sensing and Detection System (HSDS) is the fundamental requirement of this project and the future prototype and production unit. Successful laboratory testing was completed and a methodical design procedure was needed for a successful concept. The Mechanical tests confirmed the vacuum hypothesis and seal integrity with good consistent results. Electrically, the testing also provided solid results to enable the researcher to move the project forward with a certain amount of confidence. The laboratory design testing allowed the researcher to confirm theoretical assumptions before moving into the detailed design phase. Discussion on the development of the alternative concepts in both mechanical and electrical disciplines enables the researcher to make an informed decision. Each major mechanical and electrical component is detailed through the research and design process. The design procedure methodically works through the various major functions both from a mechanical and electrical perspective. It opens up alternative ideas for the major components that although are sometimes not practical in this application, show that the researcher has exhausted all engineering and functionality thoughts. Further concepts were then designed and developed for the entire HSDS unit based on previous practice and theory. In the future, it would be envisaged that both the Prototype and Production version of the HSDS would utilise standard industry available components, manufactured and distributed locally. Future research and testing of the prototype unit could result in a successful trial unit being incorporated in a working food processing production environment. Recommendations and future works are discussed, along with options in other food processing and packaging disciplines, and other areas in the non-food processing industry.
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Rocha, AntÃnio Herbert Quintino. "AplicaÃÃo de Processo Oxidativo AvanÃado (H2O2/UV) em Efluente de uma IndÃstria de Embalagens." Universidade Federal do CearÃ, 2010. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=5476.

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nÃo hÃ
O elevado crescimento industrial, alavancado pelo alto consumo em virtude do crescimento populacional e de melhores condiÃÃes de renda, tem como indicador um tipo de indÃstria, a de embalagens. Os efluentes das fÃbricas de embalagens que realizam impressÃo possuem forte coloraÃÃo. Uma vez descartados no meio ambiente alÃm de causar problemas estÃticos causam tambÃm sÃrios impactos ambientais por prejudicarem os processos de fotossÃntese nos corpos receptores. Este trabalho tem como objetivo a remoÃÃo de cor de um efluente industrial de uma fÃbrica de embalagens utilizando POA (H2O2/UV) apÃs ser tratado por um processo fÃsico-quÃmico. As amostras do efluente foram submetidas ao tratamento proposto atravÃs de um fotoreator de 0,5 L de volume Ãtil com uma potÃncia de 210 W. A amostras (10 L cada) foram recirculadas durante 8 h onde foram retiradas amostras no perÃodo de 1 h, 2 h, 3 h, 4 h e 8 h. Em uma primeira fase buscou-se o melhor ajuste operacional variando a vazÃo de recirculaÃÃo (4,0 L/min e 1,0 L/min) como tambÃm a dosagem do H2O2 (1,0%, 0,5% e 0,25%). A remoÃÃo de cor foi conseguida em todas as variaÃÃes de aplicaÃÃo sendo que o teste com 1,0% de perÃxido com uma vazÃo de 1,0 L/ min apresentou uma remoÃÃo de cor em um tempo curto de recirculaÃÃo e apresentou uma elevada remoÃÃo de DQO. Na segunda fase do trabalho otimizou-se o melhor resultado encontrado na primeira fase (1,0% de H2O2 e 1,0 L/min) fazendo o efluente passar por uma coluna de carvÃo ativado granular onde obteve-se um aumento na eficiÃncia da remoÃÃo de DQO em apenas 4 h de recirculaÃÃo. Os resultados obtidos revelam que o POA (H2O2/UV) Ã eficiente na remoÃÃo da cor de efluentes de indÃstria de embalagens que realizam impressÃo. Entretanto devem-se realizar estudos para diminuir custos de implantaÃÃo para um sistema em escala real.
The high industrial growth, driven by high consumption due to population growth and better income, is an indicator of industry type, the packaging industry. Effluents produced from packing manufacture in the print works industry carry strong color. If the effluent is disposed in the environment, it can cause esthetical problems besides significant environmental impacts causing serious damage to the photosynthesis process in the water sources. The objective of this study is to remove the color of an industrial effluent from a packing plant using an advanced oxidation process (AOP), after it has been treated by a physic-chemical process. He effluent samples were subjected to the treatment proposed by a photoreactor of 0,5L, with power of 210W. The samples (10,0L each sample) were circulated during 8 hours, when samples were taken within 1, 2, 3, 4, 5, 6, 7 and 8h. In a first stage was established to a best operational adjustment, by varying of the flow (4,0L/min e 1,0L/min) as also as the dosage of H2O2 (1,0%, 0,5% and 0,25%). The removal of the color was achieved in all variations of dosages applied, but the test with 1,0% H2O2 using the flow of 1,0L/min showed a removal of color quickly (short time of circulation) and a significant removal of DQO in just four hours of circulation. The results reveal that the POA (H2O2/UV) is effective in removing color from effluents from the packaging industry that perform printing. However studies should be performed to reduce deployment costs for a full-scale system.
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Vediappan, Rajan Sundaresan. "Modifying Post-Surgical Wound Healing." Thesis, 2021. http://hdl.handle.net/2440/130740.

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“Surgery is a profession defined by its authority to cure by means of bodily invasion. The brutality and risks of opening a living person's body have long been apparent, the benefits only slowly and haltingly worked out”, says Atul Rawande on reviewing 200 yrs. of Surgery as a specialty in NEJM. My research focuses on working out these benefits, specifically looking at reduction of scar tissue formation in ENT, Abdominal & Spine surgery. Scar tissue formation is an outcome of healing process that can be excessive due to inflammation or infection and thereby has the ability to curtail the benefits or warrant revision surgery. Multiple strategies have been tested and employed thus far and none have given favourable results without causing additional harm or economic burden in health care costs. I propose to use a hydrogel synthesized by combining Chitosan and Dextran aldehyde -Chitin is an exoskeleton extracted polymer and Dextran Aldehyde a sugar, with added noveldrugs Deferiprone and Gallium Protoporphyrin providing additional anti scaring and antibiotic properties which could potentially augment the healing properties of the gel. I have conducted 3 types of studies. There are 2 animal studies and a Phase 1 Human clinical trial. The animal studies are an abdominal surgery rat model and a spine surgery sheep model. These studies show the safety and efficacy of this chitogel-drug combination at various dosages and illustrate the healing benefits of gel-drug combination.
Thesis (Ph.D.) -- University of Adelaide, Adelaide Medical School, 2021
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Chu, Ching Rong, and 朱慶榮. "Removal of Carbon Dioxide by Absorption in a Rotating Packing Bed Equipped with Blade Packings." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/64705877774942335831.

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碩士
長庚大學
化工與材料工程研究所
97
The removal of CO2 by absorption in a rotating packed bed (RPB)equipped with blade packings has not yet been reported up to now. Therefore, this study examined the absorption of carbon dioxide by NaOH solution in RPB equipped with blade packings. The CO2 removal efficiency and the overall volumetric gas-side mass transfer coefficient(KGa) were investigated with the effects of the concentration of carbon dioxide, the concentration of NaOH, the gas flow rate, the liquid flow rate and the rotor speed. According to the experimental results, the CO2 removal efficiency appeared to increase with an increasing NaOH concentration, an increasing liquid flow rate and an increasing rotor speed, but decrease with an increasing CO2 concentration and an increasing gas flow rate. The KGa values increased with an increasing NaOH concentration, an increasing gas flow rate, an increasing liquid flow rate and an increasing rotor speed, but decrease with an increasing CO2 concentration. The CO2 loading (mole CO2/mole NaOH) increased with an increasing CO2 concentration, an increasing gas flow rate and an increasing rotor speed, but decrease with an increasing NaOH concentration and an increasing liquid flow rate. This work also investigated the effect of the end effect on the gas-side mass transfer coefficient. CO2 absorption was performed with various inner and outer radii combinations. Experimental results indicated that there was an obvious relationship between the KGa values and the radii of the packing in the RPB. The KGa values decreased with and increasing outer radius for a constant inner radius. However, the KGa values increased with an increasing inner radius for a given outer radius.
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Jian, Guo-Shing, and 簡國興. "Removal of VOCs by Absorption in a Rotating Packed Bed Equipped with Blade Packings." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/39673270575821715183.

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碩士
長庚大學
化工與材料工程研究所
94
Owing to that controlling the emission of VOCs is an important problem at present, absorption method was adopted to remove VOCs from waste gas streams by various absorbents because of its convenience of operation, low energy consumption and ability of continuous operation. Due to that rotating packed bed has advantages such as rapid operation, low tendency of flooding, small equipment size and high mass transfer efficiency, the RPB has been used as a gas-liquid contactor for removing VOCs from waste gas stream. The pressure drop and VOCs removal efficiency in a rotating packed bed equipped with blade packings were investigated. As to pressure drop, the gas flow rate appeared to be a more important factor than the liquid flow rate due to less liquid holdup under centrifugal field. Moreover, the VOCs removal efficiency increased with increasing rotor speed and liquid flow rate and decreased with increasing gas flow rate, however, the initial concentration of VOCs did not affect the VOCs removal efficiency. The overall volumetric gas-side mass transfer coefficient (KGa) was observed as a function of rotor speed, liquid flow rate, gas flow rate and VOCs type. The result showed that the KGa values increased with an increasing rotor speed, an increasing liquid flow rate and an increasing gas flow rate. Also, it was noted that the mass transfer in soluble VOCs absorption was observed to be dominated by the gas-side mass transfer according to the dependences of KGa on the gas and liquid flow rates. However, the mass transfer in insoluble VOCs absorption was controlled by the gas and liquid-side mass transfer. A correlation for KGa in a rotating packed bed equipped with blade packings was obtained from the regression of the experiment data.
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Book chapters on the topic "Removable packing"

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Han, Xin, Kazuo Iwama, and Guochuan Zhang. "Online Removable Square Packing." In Approximation and Online Algorithms, 216–29. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/11671411_17.

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Morgan, Lynette. "Harvest and postharvest factors." In Hydroponics and protected cultivation: a practical guide, 268–90. Wallingford: CABI, 2021. http://dx.doi.org/10.1079/9781789244830.0014.

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Abstract This chapter discusses harvest and postharvest factors. Harvesting involves the gathering or removal of a mature crop, with minimum damage and losses, from where it has been grown and transporting it on either for direct consumption or into the postharvest handling chain for further storage and distribution. Determination of harvest maturity, hand harvesting, robotic harvesting of greenhouse crops, postharvest handling, grading and storage, fresh-cut salad processing, shelf-life evaluation, packaging, postharvest cooling, postharvest handling damage, GAP - Good Agricultural practices in Postharvest Handling, postharvest storage, postharvest disorders, food safety and hygiene, ready-to-eat, minimally processed produce, certification and food safety systems, and postharvest developments are also discussed.
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Morgan, Lynette. "Harvest and postharvest factors." In Hydroponics and protected cultivation: a practical guide, 268–90. Wallingford: CABI, 2021. http://dx.doi.org/10.1079/9781789244830.0268.

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Abstract This chapter discusses harvest and postharvest factors. Harvesting involves the gathering or removal of a mature crop, with minimum damage and losses, from where it has been grown and transporting it on either for direct consumption or into the postharvest handling chain for further storage and distribution. Determination of harvest maturity, hand harvesting, robotic harvesting of greenhouse crops, postharvest handling, grading and storage, fresh-cut salad processing, shelf-life evaluation, packaging, postharvest cooling, postharvest handling damage, GAP - Good Agricultural practices in Postharvest Handling, postharvest storage, postharvest disorders, food safety and hygiene, ready-to-eat, minimally processed produce, certification and food safety systems, and postharvest developments are also discussed.
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Yazawa, Kazuaki, Andrei Fedorov, Yogendra Joshi, and Ali Shakouri. "Energy Efficient Solid-State Cooling for Hot Spot Removal." In Encyclopedia of Thermal Packaging, 169–96. World Scientific Publishing Company, 2014. http://dx.doi.org/10.1142/9789814327664_0008.

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Yazawa, Kazuaki, Andrei Fedorov, Yogendra Joshi, and Ali Shakouri. "Energy Efficient Solid-State Cooling for Hot Spot Removal." In Encyclopedia of Thermal Packaging, 169–96. World Scientific Publishing Company, 2014. http://dx.doi.org/10.1142/9789814678063_0008.

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Charron, I., P. Zozor, C. Renner, and M. Jovic. "Comparative study of packing materials for H2S removal by biofiltration." In Biotechniques for Air Pollution Control, 199–200. CRC Press, 2010. http://dx.doi.org/10.1201/b10563-43.

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Angélica Guillén, Rosa, Cristina Lizama-Bahena, Luis Gerardo Trevino-Quintanilla, Martin Barragan-Trinidad, Victoria Bustos, and Gabriela Moeller-Chavez. "Peat as a Potential Biomass to Remove Azo Dyes in Packed Biofilters." In Biomass [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.102691.

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Azo dyes represent a broad group of environmental pollutants that comprise between 60 and 70% of all the dyes and pigments used. The conventional processes are not efficient in treating effluents from the textile industry. Biofiltration emerges as an unconventional, easy-to-use, effective, and low-cost technology for the treatment of textile effluents. Biofiltration uses microbial consortia that form a biofilm on a filter medium. Peat is an organic matter with the ability to retain high moisture content and represents an attractive option to treat these effluents due to its high porosity, sorption capacity, availability, and low cost. The packing materials used were: peat as an organic biomass, perlite as an inorganic material, and a mixture of peat and perlite. Sorption processes in the biofilter peat-packed material and perlite are discussed dealing with its treatment capacity and as potential removers of azo dyes, their advantages and disadvantages compared with other traditional methods, and a review of operating parameters and design criteria that allow its large-scale application as a possible nonconventional treatment technology. The biofilter with the highest removal capacity was the peat-perlite mixture that achieved a 91% for the organic matter (measured as COD), and a 92% for the color removal (Direct blue 2 dye). with a retention time of 1.18 days.
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Pham, Dung A., Young-Il Lim, Hyunwoo Jee, Kwangjoon Min, Youngwon Jung, and Sun-Keun Lee. "Effect of ship tilting on amine absorber with structured-packing for CO2 removal from natural gas." In Proceedings of the 8th International Conference on Foundations of Computer-Aided Process Design, 405–10. Elsevier, 2014. http://dx.doi.org/10.1016/b978-0-444-63433-7.50052-3.

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Wang, G., W. Wang, W. Li, X. Ren, and C. Liu. "Influence of the combined packing on removal efficiency of ammonia nitrogenfrom high concentration ammonia nitrogen wastewater." In Frontiers of Energy and Environmental Engineering, 197–200. CRC Press, 2012. http://dx.doi.org/10.1201/b13718-45.

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Starosta, Wojciech, Jianwei Ren, and Philiswa Nosizo Nomngongo. "Synthesis of zirconium porous sorbents from waste PET flakes." In Waste PET-MOF-Cleanwater: Waste PET-Derived Metal-Organic Framework (MOFs) as Cost-Effective Adsorbents for Removal of Hazardous Elements from Polluted Water, 19–32. UJ Press, 2022. http://dx.doi.org/10.36615/9781776419463-02.

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Polyethylene terephthalate (PET) is a thermoplastic polymer synthesised by polycondensation of terephthalic acid and ethylene glycol monomers. Developed in 1942, it found its way into fiber production. The advances in polymer processing in the 1970s, in particular the development of injection stretch blow molding process, made the mass production of beverage bottles possible. Since then, PET polyester has been an excellent choice as a material in many industries. Factors such as its chemical resistance, strength-to-weight ratio, shatterproof properties, and low cost to product, make it an accessible solution for consumable product packaging [1].
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Conference papers on the topic "Removable packing"

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Chia-Min Lin, Wen-Chih Chen, Hsueh An Yang, and Weileun Fang. "Removable fast packing of MEMS devices using polymer connectors and silicon sockets." In 2007 IEEE 20th International Conference on Micro Electro Mechanical Systems (MEMS). IEEE, 2007. http://dx.doi.org/10.1109/memsys.2007.4433143.

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JAYATILAKA,, GEHAN, WILLIAM NTSOANE, MOHAMMAD MOEIN MOHAMMADI, and MEHRAN TEHRANI. "CORRELATING STRUCTURE TO DAMPING AND STIFFNESS IN GRAPHENE OXIDE FILMS." In Proceedings for the American Society for Composites-Thirty Seventh Technical Conference. Destech Publications, Inc., 2022. http://dx.doi.org/10.12783/asc37/36445.

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Graphene oxide (GO) films have a great potential for aerospace, electronics, and renewable energy applications due to their low cost and unique properties. For structural applications, they can achieve an exceptional combination of damping and stiffness. This study investigates the effect of packing density, reduction, and water removal on stiffness and damping of graphene oxide films. GO sheets dispersed in water are passed through a filter and deposited on a removable substrate. Through variations of the film fabrication process, films of both GO and reduced GO (rGO) are produced with varying levels of packing. Heat treatment is also used to remove the water in half of the films. The degree of packing is assessed through film density calculations. Microscopy as well as Raman and X-ray spectroscopy are used to measure the degree of packing while Dynamic Mechanical Analysis (DMA) is used to quantity mechanical damping and storage modulus of specimens in tension. Correlating mechanical properties to structure of films revealed new understanding of damping and stress transfer mechanisms in these materials. Optimal structures resulted in superior combinations of stiffness (18 GPa) and damping (0.14), potentially paving the way for using GO based films in advanced structural applications.
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Miller, William M. "Automated Inspection/Classification of Fruits and Vegetables." In ASME 1987 Citrus Engineering Conference. American Society of Mechanical Engineers, 1987. http://dx.doi.org/10.1115/cec1987-3305.

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Rapid advances in the electronic industry have generated high interest in automated grading technology tor fresh fruits and vegetables. During the last two decades, packaging and container handling have become significantly mechanized. However, sorting remains a labor intensive operation in many fresh produce industries. The amount of fruit removed can be quite significant. In Florida citrus packing, an average of 30% of the fruit is diverted to processing. Such high removal rates coupled with limited grading tables areas can diminish human grading performance and the production capacity of a packing plant. Furthermore, the cullage removal rates will probably increase with further mechanization of harvesting and field handling. Paper published with permission.
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Cha´vez, Rosa H., and Javier de J. Guadarrama. "Contamination Prevention of the Sulfur Dioxide Using Structured Packing." In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-33198.

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The atmospheric contamination is a significant problem for the population of the big cities. This problem has its origin in the burning of heavy oil, that is carried out to liberate its energy content. Its use as a primary source of energy has high pollution effects in its process due to the formation and expulsion of gases and particles as a consequence of its combustion that contaminate the atmosphere. Although it has had enough relative elements of legal type relative to the contamination, specially atmospheric contamination, there is a lack of solutions adapted to the characteristics of the problem for each country. The present work quantifies the improvements in mass transfer, using absorption column with structured packing of high efficiency for the recovery of the SO2, through the process of removal of SO2 in the form of CaSO3. For such study, the hydrodynamic and mass transfer models are used to design the column, as well as to prove different packings (national production, denominated ININ in Mexico, SulzerBX, Mellapak and Raschig) to evaluate the separation efficiency. It is discussed that the ININ packing was one of the best of those tested because it has the highest separation efficiency.
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Guo, Zehua, Zhongning Sun, Nan Zhang, Ming Ding, Haozhi Bian, and Zhaoming Meng. "DEM-CFD Study on Fluid Flow Through Radial Layered Composite Packed Beds." In 2018 26th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/icone26-81343.

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The radial porosity generally have a higher value at the container wall than that in the core part. Consequently, the fluid flows are mal-distributed in packed bed with significant bypass flow at the wall, which lowers the convective heat transfer performance inside the packed bed. To overcome this drawback of packed bed, we developed an effective way to construct the radial layered composite packed bed, which can easily realize placing small particle at the near wall region and large spheres in the core region. Therefore, smaller pores forms close to the container wall and larger channels presented in the core part. This could result in a much homogenous radial porosity distribution, which is benefit to restrain the bypass flow near the wall. In present paper, the packing procedure is simulated by the discrete element method (DEM). Radial layered composite packed bed and traditional packed bed with uniform spheres are compared on radial porosity distribution. By altering the size of spheres ratios in the near wall region different radial layered packings are also generated and compared. Then, the geometries of these packed bed are imported into the computational fluid dynamics (CFD) simulation. The fluid flow inside the packed bed is investigated. It finds that the radial layered packed bed has a lower pressure drop with the ordered packing structure. And a much homogenous fluid flow distribution is obtained than the traditional, which is benefit for the heat removal inside the packed bed. This would be useful for the optimum design of packed bed in industry applications.
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Bin, Guo, Ailing Ren, Du Zhao, Yin Dongyue, and Wenxia Zhao. "Removal of NOX Emitted from Nitric Acid Production with Biological Packing Tower." In 2009 3rd International Conference on Bioinformatics and Biomedical Engineering (iCBBE). IEEE, 2009. http://dx.doi.org/10.1109/icbbe.2009.5163311.

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Miller, Eric S., and James M. Blanding. "Strain Gage and Thermocouple Measurements of Hyper Compressor Packing Cups to Study Pressure Sealing Performance." In ASME 2015 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/pvp2015-45100.

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Low Density Polyethylene (LDPE) production involves reactors operating at up to 3,000 bar pressure or even higher. The final stage of gas compression is done with a plunger-type machine called a “Hyper Compressor”. A “packing stack” for pressure sealing consists of multiple bronze packing rings and oil lubrication injection points; which are positioned in place by numerous packing cups. The distribution of pressure drop in a new cylinder and the changes in sealing behavior over its life are critical to design, but have long been prohibitively difficult to verify experimentally. Four cylinders were extensively instrumented; two in each of two successive test campaigns over four years’ time. Strain gages were located at the outside diameter of each packing cup to infer internal dynamic pressure across the packing stack. Included also in the high-speed data acquisition were strain gages on numerous additional components, thermocouples on packing cup faces, a pressure transducer in the low-pressure lubrication line, and existing eddy-current proximity probes on the plunger rods. Continuous monitoring was performed from the initial installation to final removal of each cylinder. Analysis of this high speed data along with long-term trends led to several conclusions regarding the design and operation of the Hyper cylinder. Testing also revealed various unusual events that can be further studied to better understand some of the unique behaviors that take place in the highly complex cylinder design of Hyper compressors.
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Plisko, M., and J. Spencer. "261. An Evaluation of The Removal and Replacement of Asbestos-Containing Valve Packing." In AIHce 2002. AIHA, 2002. http://dx.doi.org/10.3320/1.2766192.

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Yamamoto, Yasuhisa. "Photoresist Removal Requirements for Advanced Wafer Level Packaging Technology." In Circuits Technology Conference (IMPACT). IEEE, 2008. http://dx.doi.org/10.1109/impact.2008.4783855.

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Fu, Yaru, Jun Geng, Dawei Sun, Qiliang Mei, Gaofeng Huang, and Nan Pan. "Research on Method and Characteristics of Aerosol Natural Removal in Containment After Accidents." In 2017 25th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/icone25-66558.

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For passive nuclear power plants, the radioactive aerosols in containment are removed by natural processes after accidents. These processes have high reliability. However, it is very complicated to analyze the behaviors of aerosols in natural processes. The dominant processes include coagulation, sedimentation, diffusionphoresis, and themophoresis. The main work of this paper is summarized as follows: (1) To determine methods of analysis radioactive aerosol natural removal coefficient in containment. (2) To complete comparative analysis natural removal processes to AP1000 and CAP1400 after LOCA. (3) A comprehensive sensitivity analysis is carried out for a number of parameters, including containment free volume, sedimentation area, aerosol size, packing fraction, mass ratio of radioactive and nonradioactive aerosol, and steam condensation rate etc, (4) To complete comparative analysis of natural removal processes between core meltdown and non-meltdown accident sequence after LOCA. The results show that, (1) Removal coefficient by sedimentation of CAP1400 is larger than AP1000, removal coefficient by diffusionphoresis and themophoresis of CAP1400 also smaller than AP1000. (2) In general, the greater the containment free containment, the smaller the aerosol natural removal coefficient, and the greater aerosol size, the more the amount of aerosol removed by sedimentation, in the case of other parameters unchanged. (3) The removal coefficients have few differences after core meltdown and non-meltdown accidents.
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Reports on the topic "Removable packing"

1

Burnside, M. E. Safety evaluation for packaging (onsite) product removal can containers. Office of Scientific and Technical Information (OSTI), April 1998. http://dx.doi.org/10.2172/362541.

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Boettger, J. S. Safety evaluation for packaging (onsite) product removal can containers. Office of Scientific and Technical Information (OSTI), April 1997. http://dx.doi.org/10.2172/16908.

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Orbeta, C. B. KE Basin monorail modification for the sludge removal and packaging project. Office of Scientific and Technical Information (OSTI), February 1995. http://dx.doi.org/10.2172/10119273.

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