Journal articles: 'Micro dosing'

1

Roßberg, R., B. Schmidt, and S. Büttgenbach. "Micro liquid dosing system." Microsystem Technologies 2, no. 1 (March 1995): 11–16. http://dx.doi.org/10.1007/bf02739522.

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OUSMAN, ABDELRAHMAN, and JENS B. AUNE. "EFFECT OF SEED PRIMING AND MICRO-DOSING OF FERTILIZER ON GROUNDNUT, SESAME AND COWPEA IN WESTERN SUDAN." Experimental Agriculture 47, no. 3 (April 4, 2011): 431–43. http://dx.doi.org/10.1017/s0014479711000068.

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SUMMARYThe effect of seed priming and micro-dosing in groundnut, cowpea and sesame was studied for three years in on-farm and on station experiments under rainfed agriculture in North Kordofan, Sudan. The on-station trials showed that seed priming increased groundnut pod and hay yields by 18% and 20% respectively. Micro-dosing of 0.3, 0.6 and 0.9 g fertilizer per pocket increased groundnut pod yield across the three years by 36.7, 67.6 and 50.8% respectively compared to the control. The highest yield increases were consistently obtained when micro-dosing was combined with seed priming. A combination of seed priming and micro-dosing of 0.6 g increased groundnut yield by 106%. Priming alone did not significantly affect sesame seed or hay yield, but micro-dosing of 0.6 g per pocket increased the grain yield by 38% over the control. Cowpea grain yield in the on-station experiments was not significantly affected by seed priming or micro-dosing. However, both seed priming and micro-dosing increased cowpea hay yield. In the on-farm trials, seed priming increased groundnut and cowpea yields by 18.2 and 25.5% respectively, and seed priming combined with 0.3 g fertilizer increased their yields by 42.2 and 54.5% respectively compared to the control. For sesame the yield increase after 0.3 g fertilizer per pocket was 46.3%. The economic analyses of the on-station experiments showed that the highest gross margin was obtained when combining seed priming with 0.6 g micro-dosing for all the crops. These results show that the combination of micro-dosing and seed priming has the potential to increase productivity and improve net return in the crops tested.

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Sacher, Christoph, and Daniel Pössnicker. "Low-shear dosing of micro-encapsulated adhesives." ADHESION ADHESIVES&SEALANTS 10, no. 2 (February 2013): 21–23. http://dx.doi.org/10.1365/s35784-013-0158-5.

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IBRAHIM, A., D. PASTERNAK, and D. FATONDJI. "Impact of depth of placement of mineral fertilizer micro-dosing on growth, yield and partial nutrient balance in pearl millet cropping system in the Sahel." Journal of Agricultural Science 153, no. 8 (October 7, 2014): 1412–21. http://dx.doi.org/10.1017/s0021859614001075.

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SUMMARYA study was carried out in the rainy seasons of 2008 and 2009 in Niger to investigate the effects of fertilizer micro-dosing on root development, yield and soil nutrient exploitation of pearl millet. Different rates of diammonium phosphate (DAP) were applied to the soil at different depths and it was found that although micro-dosing with DAP increased grain yield over the unfertilized control to a similar level as broadcast DAP, doubling the micro-dosage did not increase it further. Increasing the depth of fertilizer application from 5 to 10 cm resulted in significant increases in root length density, and deep application of fertilizer resulted in higher yields, although the increases were generally not significant. It was postulated that the positive effect of micro-dosing resulted from better exploitation of soil nutrients because of the higher root volume. Levels of nutrients exported from the soil were at least as high in plants receiving micro-dosing as the unfertilized control, and plants receiving micro-dosing exported 5–10 times more phosphorus from the soil than the amount added through fertilization.

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Döpper, J., M. Clemens, W. Ehrfeld, S. Jung, K.-P. Kämper, and H. Lehr. "Micro gear pumps for dosing of viscous fluids." Journal of Micromechanics and Microengineering 7, no. 3 (September 1, 1997): 230–32. http://dx.doi.org/10.1088/0960-1317/7/3/040.

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Wang, Zhanwei, Kun Liu, Jiuxin Ning, Shulei Chen, Ming Hao, Dongyang Wang, Qi Mei, Yaoshuai Ba, and Dechun Ba. "Effects of Pulse Interval and Dosing Flux on Cells Varying the Relative Velocity of Micro Droplets and Culture Solution." Processes 6, no. 8 (August 7, 2018): 119. http://dx.doi.org/10.3390/pr6080119.

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Microdroplet dosing to cell on a chip could meet the demand of narrow diffusion distance, controllable pulse dosing and less impact to cells. In this work, we studied the diffusion process of microdroplet cell pulse dosing in the three-layer sandwich structure of PDMS (polydimethylsiloxane)/PCTE (polycarbonate) microporous membrane/PDMS chip. The mathematical model is established to solve the diffusion process and the process of rhodamine transfer to micro-traps is simulated. The rhodamine mass fraction distribution, pressure field and velocity field around the microdroplet and cell surfaces are analyzed for further study of interdiffusion and convective diffusion effect. The cell pulse dosing time and drug delivery efficiency could be controlled by adjusting microdroplet and culture solution velocity without impairing cells at micro-traps. Furthermore, the accuracy and controllability of the cell dosing pulse time and maximum drug mass fraction on cell surfaces are achieved and the drug effect on cells could be analyzed more precisely especially for neuron cell dosing.

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Böhm, Sebastian, Björn Timmer, Wouter Olthuis, and Piet Bergveld. "A closed-loop controlled electrochemically actuated micro-dosing system." Journal of Micromechanics and Microengineering 10, no. 4 (October 10, 2000): 498–504. http://dx.doi.org/10.1088/0960-1317/10/4/303.

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Ekwangu, J., P. Anguria, C. Andiku, J. S. Tenywa, J. Bisikwa, N. Wanyera, and M. A. Ugen. "Fertilizer Micro-dosing and Timing of Weeding for Enhancing Finger-Millet Production in Eastern Uganda." Journal of Agricultural Science 12, no. 11 (October 15, 2020): 290. http://dx.doi.org/10.5539/jas.v12n11p290.

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Finger-millet response to micro-dosing with N and P fertilizer in the Semi-Arid areas of eastern Uganda is not fully known. Consequently, we conducted a field study at Kuju in eastern Uganda in 2016 long and short rains. The study determined the effect of fertilizer micro-dosing and weeding time on finger-millet performance. The experiment was laid out in a randomized complete block design with a split plot treatment structure. Weeding time constituted the main plot (weeding at 20, 30, 45 DAS (days after sowing) and 20 + 45 DAS while fertilizer rates (16.6 kg N ha-1 + 10.6 kg P2O5 ha-1; 10.6 kg P2O5 ha-1; 16.6 kg N ha-1; 0 N + 0 N and 83 kg N ha-1 + 52 kg P2O5 ha-1) constituted the sub-plots. Results of this study revealed that finger-millet grain yield was highest (2182 kg ha-1) at fertilizer micro-dosing (16.6 kg N ha-1 + 10.6 kg P2O5 ha-1) and lowest (950 kg ha-1) in plots with no fertilizer. Fertilizer micro-dose application (16.6 kg N ha-1 + 10.6 kg P2O5 ha-1) caused early flowering of finger-millet (52.2 days), whereas delayed flowering was recorded, where 16.6 kg N ha-1 (55.12 days) was applied. The interaction between time of weeding and fertilizer rates significantly (P < 0.05) increased finger millet growth and grain yield. The interaction of N and P fertilizer micro-dose with weeding once at 20 DAS had the highest finger-millet grain yield. Therefore, it is recommended that fertilizer micro-dosing can be used to enhance finger-millet productivity.

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Besenhard, M. O., S. K. Karkala, E. Faulhammer, S. Fathollahi, R. Ramachandran, and J. G. Khinast. "Continuous feeding of low-dose APIs via periodic micro dosing." International Journal of Pharmaceutics 509, no. 1-2 (July 2016): 123–34. http://dx.doi.org/10.1016/j.ijpharm.2016.05.033.

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Tsai, Nan-Chyuan, and Chung-Yang Sue. "Dynamic simulation and novel fabrication technique on ICPF-based micro-actuators for flexible micro dosing systems." Microsystem Technologies 14, no. 2 (July 25, 2007): 267–75. http://dx.doi.org/10.1007/s00542-007-0424-z.

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Wang, Hongcheng, Ting Zhang, Miaomiao Zhao, Rangrang Chen, and Liqun Wu. "Micro-Dosing of Fine Cohesive Powders Actuated by Pulse Inertia Force." Micromachines 9, no. 2 (February 7, 2018): 73. http://dx.doi.org/10.3390/mi9020073.

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D. K. Giles, D. Downey, D. C. Slaughter, J. C. Brevis-Acuna, and W. T. Lanini. "HERBICIDE MICRO-DOSING FOR WEED CONTROL IN FIELD-GROWN PROCESSING TOMATOES." Applied Engineering in Agriculture 20, no. 6 (2004): 735–43. http://dx.doi.org/10.13031/2013.17721.

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Fengping, Hu, Fan Qi, Hu Wenjie, He Xizhen, and Dai Hongling. "Study on Coagulant Dosing Control System of Micro Vortex Water Treatment." IOP Conference Series: Earth and Environmental Science 128 (March 2018): 012058. http://dx.doi.org/10.1088/1755-1315/128/1/012058.

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Besenhard, M. O., E. Faulhammer, S. Fathollahi, G. Reif, V. Calzolari, S. Biserni, A. Ferrari, S. M. Lawrence, M. Llusa, and J. G. Khinast. "Accuracy of micro powder dosing via a vibratory sieve–chute system." European Journal of Pharmaceutics and Biopharmaceutics 94 (August 2015): 264–72. http://dx.doi.org/10.1016/j.ejpb.2015.04.037.

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15

Søgaard, H. T., and I. Lund. "Application Accuracy of a Machine Vision-controlled Robotic Micro-dosing System." Biosystems Engineering 96, no. 3 (March 2007): 315–22. http://dx.doi.org/10.1016/j.biosystemseng.2006.11.009.

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Ekwangu, Joseph, John Steven Tenywa, Jenifer Bisikwa, Charles Andiku, Paul Anguria, Monday Moses Paga, Deborah Lillian Nabirye, Michael Adrogu Ugen, and Nelson Wanyera. "Effect of Inorganic Fertilizer Micro-dosing and Weed Management Regimes on Finger Millet Productivity in Uganda." Journal of Agricultural Science 12, no. 12 (November 15, 2020): 134. http://dx.doi.org/10.5539/jas.v12n12p134.

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Finger millet yields in farmers’ fields are low primarily due to low soil fertility and poor weed management. Fertilizer application could be one of the key strategies used to address the problem. However, due to high cost of fertilizer, its utilization has been limited to very few farmers in the country. Consequently, a study was conducted in Kuju sub-county, Amuria district in Eastern Uganda during 2016 long and short rains to determine the effect of micro dosing and weeding time on finger millet performance and weed growth. The experiment was laid out in a randomized complete block design in a split plot treatment structure. Weeding times constituted the main plot [weeding at 20 DAS (days after sowing), 30 DAS, 45 DAS, and 20 & 45 DAS (double weeding)], while fertilizer rates (N 16.6 kg ha-1 + P2O5 10.6 kg ha-1; P2O5 10.6 kg ha-1; N 16.6 kg ha-1; N0 + P0, and N 83 kg ha-1 + P2O5 52 kg ha-1) constituted the sub plots. Results of this study revealed that the interaction between weeding at 45 DAS and fertilizer micro-dosing significantly (P < 0.05) reduced weed biomass (7.7 × 10-4 kg ha-1) without significant increase in finger-millet grain yield. Interaction of fertilizer micro-dosing (N 16.6 kg ha-1 + P2O5 10.6 kg ha-1) with weeding once at 20 DAS recorded the highest (2292 kg ha-1) finger millet grain yield with significant (P < 0.05) reduction in days to finger millet flowering. Therefore, it is recommended that fertilizer micro-dosing at N 16.6 kg ha-1 + P2O5 10.6 kg ha-1 and weeding once at 20 DAS can be used to control weeds and enhance finger-millet productivity.

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Sergeev, Alexander Georgievich, Sergey Yuryevich Bulatov, Vladimir Nikolaevich Nechaev, Peter Alekseevich Savinyh, and Anatoly Evgenyevich Shamin. "Assessment of combifeed components dosing system under farm conditions." Agrarian Scientific Journal, no. 8 (August 31, 2020): 93–99. http://dx.doi.org/10.28983/asj.y2020i8pp93-99.

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The article considers the results of determining the main characteristics of the operation of the dosage modules of macro- and micro-components of mixed feed in the conditions of the fodder preparation division of the livestock farm. Relationship of reduction of dosing error with increase of weight of suspended components and at their total value is revealed. Microcomponent Vitex D, with a reference weight of 4 kg, was found to have the largest deviation of 12,63 %. However, when dosing four microcomponents with a total weight of 54,4 kg (Status 2, chalk, RumiMix, Vitex D), the dosing error does not exceed 0,71%. For macrocomponents the error value does not exceed 2 %. Theoretical dependence describing dosing error depending on the weight of the dosed component is revealed.

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MASHINGAIDZE, N., P. BELDER, S. TWOMLOW, L. Hove, and M. MOYO. "IMPROVING MAIZE (ZEA MAYS L.) PERFORMANCE IN SEMI-ARID ZIMBABWE THROUGH MICRO-DOSING WITH AMMONIUM NITRATE TABLETS." Experimental Agriculture 49, no. 2 (November 30, 2012): 179–96. http://dx.doi.org/10.1017/s0014479712001020.

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SUMMARYAlthough the application of small quantities of nitrogen (N) fertiliser has improved cereal yields on low-input farms in semi-arid Zimbabwe, the practice is reported to be laborious and time-consuming by farmers. In an effort to make micro-dosing less labour-intensive and more precise, an ammonium nitrate (AN) tablet, the equivalent of a micro-dose of prill AN (28 kg N ha−1) applied per maize plant, was developed by International Crops Research Institute for the Semi-Arid Tropics in collaboration with Agri-Seeds, Zimbabwe. This study characterized the physical stability, chemical (N% and solubility) and agronomic performance of AN tablets compared with prill AN. Only 10% of tablets broke when dropped from 2 m, showing that they are physically stable and can handle rough treatment. The N content in the tablets (33.3%) was comparable to that in prill AN (34.6%). However, the tablet formulation took twice as long to dissolve than prill AN when placed on a wet soil. Despite this difference in solubility, simple leaching column experiments suggest that less than 2% of the total AN applied was lost due to leaching. Agronomic trials were superimposed on the paired-plot demonstrations used to promote micro-dosing and the conservation agriculture tillage technique of planting basins from 2005 to 2008. Each tillage (plough and basins) plot was subdivided into three sub-plots on which no AN, prill AN and tableted AN treatments were superimposed. Maize was planted and management of plots was left to farmers. Micro-dosing with either prill or tableted AN significantly (p < 0.001) increased maize grain yield by over 40% in all seasons for planting basins. However, on the ploughed plot there was no yield benefit to using either AN formulation in the season with the lowest rainfall (2006–2007). There was no significant difference in grain yield and agronomic N use efficiency between prill and tableted AN formulations except for the 2005–2006 season in planting basins. During this season, in planting basins, tableted AN had significantly (p < 0.001) higher rainwater productivity than prill AN, which translated into greater grain yield. In addition, the maximum benefit to micro-dosing was observed to accrue when combined with water harvesting techniques such as planting basins. An observation supported by the host farmers, who in the second and third seasons chose to apply available basal soil fertility amendments to the basin plots over the flat plots. Thus, AN tablets if available at an affordable price can be used by smallholder farmers to more precisely apply N fertiliser. Future work should focus on the labour issues of micro-dosing, and making cost-effective tablets available to resource-poor farmers and also addressing other limiting soil nutrients.

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Aiswarya, Aravind, and V. R. Manohar. "HUMAN MICRO DOSING STUDIES (PHASE 0): A NOVEL APPROACH IN CLINICAL RESEARCH." Journal of Pharmaceutical & Scientific Innovation 3, no. 1 (February 19, 2014): 4–9. http://dx.doi.org/10.7897/2277-4572.03196.

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Giesen, Yvonne, Franziska Nürnberger, Krista Gusbeth, Ann-Kathrin Mühlberg, Nils Lamm, Gregoria Schwab, and Dietmar Breuer. "Piezoelectric Micro-dosing System for Spiking Quality Samples in Occupational Hygiene Laboratories." Annals of Work Exposures and Health 63, no. 9 (November 2019): 1061–69. http://dx.doi.org/10.1093/annweh/wxz071.

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Abstract Quality control is crucially important in the arena of chemical analysis. Reference materials are essential for calibration and quality control processes, and for verification of the accuracy and reliability of the analytical results obtained. Owing to the complexity of their manufacture, reference materials for chemical agents occurring at workplaces are expensive and available only on a limited scale and for a small number of substances. Therefore, their cost-effective and fast production is an important aim. The Institute for Occupational Health and Safety (IFA) of the German Social Accident Insurance (DGUV) currently pursues different strategies for the production of reference materials. One strategy entails the use of a piezoelectric micro-dispensing system for non-contact spiking of extremely small quantities of substances with high reproducibility. The dispensing system is coupled to a semi-automated assembly unit for loading high numbers of samples. It is used for spiking phosphoric and sulphuric acid onto quartz fibre filters. Comparison of the results obtained on different days shows higher variability than results observed on the same day. However, after daily adjustment of the number of droplets to the current droplet volume, highly reproducible series with an adequate number of samples (>500) could be realized. The results of the internal quality control were verified in an interlaboratory comparison. Furthermore, storage stability was investigated systematically over a period of 2 years. The samples produced are suitable for use as reference materials for both inorganic acids.

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Besenhard, M. O., S. Fathollahi, E. Siegmann, E. Slama, E. Faulhammer, and J. G. Khinast. "Micro-feeding and dosing of powders via a small-scale powder pump." International Journal of Pharmaceutics 519, no. 1-2 (March 2017): 314–22. http://dx.doi.org/10.1016/j.ijpharm.2016.12.029.

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Primavera, Rosita, Bhavesh D. Kevadiya, Ganesh Swaminathan, Rudilyn Joyce Wilson, Angelo De Pascale, Paolo Decuzzi, and Avnesh S. Thakor. "Emerging Nano- and Micro-Technologies Used in the Treatment of Type-1 Diabetes." Nanomaterials 10, no. 4 (April 20, 2020): 789. http://dx.doi.org/10.3390/nano10040789.

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Type-1 diabetes is characterized by high blood glucose levels due to a failure of insulin secretion from beta cells within pancreatic islets. Current treatment strategies consist of multiple, daily injections of insulin or transplantation of either the whole pancreas or isolated pancreatic islets. While there are different forms of insulin with tunable pharmacokinetics (fast, intermediate, and long-acting), improper dosing continues to be a major limitation often leading to complications resulting from hyper- or hypo-glycemia. Glucose-responsive insulin delivery systems, consisting of a glucose sensor connected to an insulin infusion pump, have improved dosing but they still suffer from inaccurate feedback, biofouling and poor patient compliance. Islet transplantation is a promising strategy but requires multiple donors per patient and post-transplantation islet survival is impaired by inflammation and suboptimal revascularization. This review discusses how nano- and micro-technologies, as well as tissue engineering approaches, can overcome many of these challenges and help contribute to an artificial pancreas-like system.

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Tan, Feng Xun, Nan Lu, Dao Ji Wu, Ning Wang, and Rong Zhen Zhou. "Treatment of Micro-Polluted Water with Diatomite-Enhanced Coagulation." Advanced Materials Research 864-867 (December 2013): 2013–17. http://dx.doi.org/10.4028/www.scientific.net/amr.864-867.2013.

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Raw micro-polluted water was sampled from a water treatment plant in Gaomi, a town in north China. The treatment with diatomite-enhanced coagulation was investigated, including the effect of dose and the dosing point of diatomite on enhanced coagulation. The results showed that the removal efficiencies of turbidity, color, UV254 and CODMn could reach 78.99 %, 76.19 %, 29.63 % and 22.77 %, respectively, when 15 mg/L diatomite was added at 30 minutes before coagulation. It was found that the optimum pH of diatomite-enhanced coagulation was approximately 6~7.

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Lai, Jing-Yao, Nan-Chyuan Tsai, and Hsin-Lin Chiu. "Theoretical analysis and simulations of micro-dosing locomotive robot with drug-release mechanism." Robotics and Autonomous Systems 62, no. 2 (February 2014): 177–87. http://dx.doi.org/10.1016/j.robot.2013.11.001.

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Wanitphakdeedecha, Rungsima, Chadakan Yan, Chalermkwan Apinuntham, Viboon Rojanavanich, Kathryn Anne G. Cembrano, Sasima Eimpunth, and Woraphong Manuskiatti. "Intradermal Micro-Dosing of AbobotulinumtoxinA for Face-Lifting: How Long Does It Last?" Dermatology and Therapy 10, no. 4 (June 26, 2020): 779–89. http://dx.doi.org/10.1007/s13555-020-00414-7.

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Zehetbauer, Thomas, Andreas Plöckinger, Carina Emminger, and Umut D. Çakmak. "Mechanical Design and Performance Analyses of a Rubber-Based Peristaltic Micro-Dosing Pump." Actuators 10, no. 8 (August 19, 2021): 198. http://dx.doi.org/10.3390/act10080198.

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Low pressure fluid transport (1) applications often require low and precise volumetric flow rates (2) including low leakage to reduce additional costly and complex sensors. A peristaltic pump design (3) was realized, with the fluid’s flexible transport channel formed by a solid cavity and a wobbling plate comprising a rigid and a soft layer (4). In operation, the wobbling plate is driven externally by an electric motor, hence, the soft layer is contracted and unloaded (5) during pump-cycles transporting fluid from low to high pressure sides. A thorough characterization of the pump system is required to design and dimension the components of the peristaltic pump. To capture all these parameters and their dependencies on various operation-states, often complex and long-lasting dynamic 3D FE-simulations are required. We present, here, a holistic design methodology (6) including analytical as well as numerical calculations, and experimental validations for a peristaltic pump with certain specifications of flow-rate range, maximum pressures, and temperatures. An experimental material selection process is established and material data of candidate materials (7) (liquid silicone rubber, acrylonitrile rubber, thermoplastic-elastomer) are directly applied to predict the required drive torque. For the prediction, a semi-physical, analytical model was derived and validated by characterizing the pump prototype.

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Spectre, Galia, Lisa Arnetz, Claes-Göran Östenson, Kerstin Brismar, Nailin Li, and Paul Hjemdahl. "Twice daily dosing of aspirin improves platelet inhibition in whole blood in patients with type 2 diabetes mellitus and micro- or macrovascular complications." Thrombosis and Haemostasis 106, no. 09 (2011): 491–99. http://dx.doi.org/10.1160/th11-04-0216.

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SummaryThe efficacy of low-dose aspirin in type 2 diabetes mellitus (T2DM) has been questioned. We tested if twice daily dosing of aspirin would be more effective in T2DM, possibly due to increased platelet turnover. A randomised cross-over study compared 75 mg aspirin OD, 75 mg BID and 320 mg OD (≥2 week treatment periods) in 25 patients with T2DM and micro- or macrovascular complications. Platelet responses were examined by impedance aggregometry (WBA) and the IMPACT-R aspirin test in whole blood, light transmittance aggregometry in plateletrich plasma (LTA), and urinary 11-dehydro-thromboxane B2 (TxM). Aspirin 75 mg BID decreased arachidonic acid (AA)-induced WBA compared to 75 mg OD (9.7 ± 4.5 vs. 12.6 ± 3.5 ohm; p=0.003) or to 320 mg OD (11.5 ± 4.2 Ohms; p=0.049). WBA responses to collagen were similarly attenuated by BID or high dosing (by 12–14%; p=0.02 for both). The IMPACT-R showed a better response to 75 mg BID compared to 75 mg OD (p=0.049), but not to 320 mg OD. AA-induced aggregation by LTA was <6.5% on all occasions, with no differences between aspirin dosages. TxM was reduced after 320 mg OD (p=0.002), but not 75 mg BID (p=0.07). Reticulated platelets were highly correlated with mean platelet volume (MPV; r2=0.74, p<0.0001). Both markers for platelet turnover were correlated with AA-induced WBA, but neither identified patients who benefited from BID dosing dependably. In conclusion, twice daily dosing improved laboratory responses to aspirin in high risk T2DM patients. Studies of whether BID dosing of aspirin can improve clinical outcomes in such patients are of interest.

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Nguyen, N. T., S. Schubert, S. Richter, and W. Dötzel. "Hybrid-assembled micro dosing system using silicon-based micropump/ valve and mass flow sensor." Sensors and Actuators A: Physical 69, no. 1 (June 1998): 85–91. http://dx.doi.org/10.1016/s0924-4247(98)00039-9.

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Ji, Bin, Lin Zhu, Siyu Wang, Hui Qin, Yingqun Ma, and Yu Liu. "A novel micro-ferrous dosing strategy for enhancing biological phosphorus removal from municipal wastewater." Science of The Total Environment 704 (February 2020): 135453. http://dx.doi.org/10.1016/j.scitotenv.2019.135453.

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Hu, Chang Ying, Jin Long Zuo, and Han Jun Xie. "TiO₂ Photo-Catalysis Degradation of COD and Chroma for Chemical Wastewater Treatment." Advanced Materials Research 777 (September 2013): 82–85. http://dx.doi.org/10.4028/www.scientific.net/amr.777.82.

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In this study, TiO2 nanoparticles composites were prepared by the micro emulsion method. Used the chemical wastewater as degradation products to evaluate the degradation performance of TiO2 photo-catalysis. The results indicated that TiO2 had photo-catalysis efficiency under the light, the optimal dosing of TiO2 was 1g/L, optimal pH value was 10, and COD of initial concentration was 1000 mg/L.

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Chen, Xiaolong, Karlheinz Seyfang, and Hartwig Steckel. "Development of a micro dosing system for fine powder using a vibrating capillary. Part 1: The investigation of factors influencing on the dosing performance." International Journal of Pharmaceutics 433, no. 1-2 (August 2012): 34–41. http://dx.doi.org/10.1016/j.ijpharm.2012.04.068.

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Gniot, Maciej, and Adam Barylski. "Lapping flat surfaces with forced dosing of abrasive suspension." MATEC Web of Conferences 302 (2019): 01005. http://dx.doi.org/10.1051/matecconf/201930201005.

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The issues concerning the finishing of flat ceramic seals are presented in the paper. The treatment requirements demanded from the elements of that type cause, that necessary is application of grinding-in in the technological process. Such a precise abrasive treatment of flat surfaces of that type, requires the use of an appropriate suspended matter or abrasive paste. Many factors connected with metal grinding-in shield, components of abrasive suspended matter and the treatment’s technological conditions, have an impact on the treatment’s result. The manner and intensity of the suspended matter’s proportioning in the grinding-in are, are also of decisive nature. A standard, free manner of proportioning, in a continuous manner most often dipping or dropping, results in big losses of abrasive material. A part of abrasive micro-grains is quickly removed from the operating grinding-in shield by the rotating rings leading separators with treated elements and does not take part at all in machine cutting. It considerably increases the tool costs and has an unfavourable impact on the natural environment. Implementation of the forced abrasive suspended matter’s proportioning at the time of the machine grinding-in, considerably reduces these losses.

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Amao, P., B. Amujoyegbe, and D. Oyedele. "Fertilizer Micro-dosing on Growth and Vegetative Yield of Fluted Pumpkin (Telfairia occidentalis Hook. f)." Journal of Applied Life Sciences International 16, no. 3 (March 5, 2018): 1–9. http://dx.doi.org/10.9734/jalsi/2018/37533.

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Mitra, Biplob, Prajwal Thool, Saikishore Meruva, J. Alex Aycinena, Jianmin Li, Jhalak Patel, Kuldip Patel, Anjali Agarwal, Shyam Karki, and William Bowen. "Decoding the small size challenges of mini-tablets for enhanced dose flexibility and micro-dosing." International Journal of Pharmaceutics 574 (January 2020): 118905. http://dx.doi.org/10.1016/j.ijpharm.2019.118905.

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Zhang, Yun, Erik S. Staab, David C. Slaughter, D. Ken Giles, and Daniel Downey. "Automated weed control in organic row crops using hyperspectral species identification and thermal micro-dosing." Crop Protection 41 (November 2012): 96–105. http://dx.doi.org/10.1016/j.cropro.2012.05.007.

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Zhu, Min, Ming Guo, Hao Hong, Sheng’ao Wang, and Biao Li. "Measurement System Design of Micro-Dose Experimental Spectrum." International Journal of Pattern Recognition and Artificial Intelligence 34, no. 12 (March 20, 2020): 2054031. http://dx.doi.org/10.1142/s0218001420540312.

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Tissue equivalent proportional counter (TEPC) is used to measure the micro-dose spectrum of ionizing radiation. Through changing tissue-equivalent gas pressure, TEPC can simulate the case of radiation energy deposition in different sizes of human cells. Various dosimetric quantities can be obtained such as absorbed dose, radiation quality factor and micro-dose equivalent. Because TEPC simulated cell size is less than the range of ionizing radiation particles, TEPC can be used as linear energy transfer spectroscopy, which can identify different linear energy transfer particles in a mixed radiation field and play an important role in mixed neutron–photon radiation field monitoring and protection. A tissue equivalent proportional counter is designed and manufactured in this paper. Through the built of micro-dose detector signal testing platform, and the realization of measurement of micro-dose detector signal debugging and important parameters (stability, energy resolution, etc.) by [Formula: see text] source method, micro-dose energy spectrum analysis and experimental measurements of Cf-252 source were ultimately achieved. Results show that the detector has good sealing performance and stability, with 12 h stability better than 2.7%. Based on all the above spectra, micro-dosing spectrum of Cf-252 source was experimentally obtained.

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AUNE, JENS B., and ABDELRAHMAN OUSMAN. "EFFECT OF SEED PRIMING AND MICRO-DOSING OF FERTILIZER ON SORGHUM AND PEARL MILLET IN WESTERN SUDAN." Experimental Agriculture 47, no. 3 (April 4, 2011): 419–30. http://dx.doi.org/10.1017/s0014479711000056.

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SUMMARYThe effect of seed priming and micro-dosing (the application of small amounts of mineral fertilizers) was studied in sorghum and pearl millet in on-station and on-farm experiments for three seasons under rainfed conditions in the North Kordofan State, western Sudan. Seed priming consists of soaking the seeds for eight hours in water prior to sowing. Seed priming increased sorghum grain yield in the on-station experiments across three seasons from 482 kg ha−1 to 807 kg ha−1. Micro-dosing of 0.3 g, 0.6 g and 0.9 g NPK fertilizer (17-17-17) per pocket increased sorghum grain yield by 50.4, 68.8 and 109.7% respectively compared to the control. Seed priming did not significantly increase pearl millet yield while the micro-doses of 0.3, 0.6 and 0.9 g fertilizer increased millet yield by 31.3, 30.7 and 47% respectively. On-farm seed priming increased sorghum yields by 32.6% while seed priming plus 0.3 g fertilizer increased yields by 69.5%. For millet, the corresponding yields increased by 29.8% and 71% respectively. Fertilizer use efficiency for both crops increased remarkably with seed priming, although this effect was more apparent in sorghum than in millet. In sorghum, seed priming and the application of 0.9 g fertilizer per pocket increased the gross margin from 49.5 to 206.5 US$/ha. For millet, the gross margin increased from 44.9 in the control to 90.0 US$/ha with the combination of seed priming and 0.3 g fertilizer per pocket. These technologies are simple to apply; they offer low financial cost and low risk and are affordable for resource-poor farmers.

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Fu, Jin Xiang, Hong Mei Li, Peng Fei Yu, and Kai Zhao. "Research on Waste Materials with Decentralized White Spirit Wastewater Pretreatment by Fe-C Micro-Electrolysis." Applied Mechanics and Materials 644-650 (September 2014): 5419–22. http://dx.doi.org/10.4028/www.scientific.net/amm.644-650.5419.

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This research adopts the important iron electrolysis, removal of the wastewater of high COD, SS, phosphorus pretreatment experiment. Discusses the different iron dosing quantity, iron carbon ratio, and pH value, reaction time on the COD and turbidity, the influence of the phosphorus removal effect. Studies show that iron important electrochemical test in brewery wastewater treatment static optimal processing conditions for: water pH value is 4, 5% dosage of iron filings, 60 min temperature response, COD removal rate was 52.31%. When the iron carbon ratio of 2:1, removing effect is good, can reach 54.53%.

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Hayashi, K., T. Abdoulaye, B. Gerard, and A. Bationo. "Evaluation of application timing in fertilizer micro-dosing technology on millet production in Niger, West Africa." Nutrient Cycling in Agroecosystems 80, no. 3 (October 11, 2007): 257–65. http://dx.doi.org/10.1007/s10705-007-9141-3.

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Twomlow, Steve, David Rohrbach, John Dimes, Joseph Rusike, Walter Mupangwa, Bongani Ncube, Lewis Hove, Martin Moyo, Nester Mashingaidze, and Putso Mahposa. "Micro-dosing as a pathway to Africa’s Green Revolution: evidence from broad-scale on-farm trials." Nutrient Cycling in Agroecosystems 88, no. 1 (August 28, 2008): 3–15. http://dx.doi.org/10.1007/s10705-008-9200-4.

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Fládr, Josef, Petr Bílý, Karel Šeps, Roman Chylík, and Vladimír Hrbek. "The Effect of Homogenization Procedure on Mechanical Properties of High-Performance Concrete with Partial Replacement of Cement by Supplementary Cementitious Materials." Solid State Phenomena 292 (June 2019): 102–7. http://dx.doi.org/10.4028/www.scientific.net/ssp.292.102.

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High-performance concrete is a very specific type of concrete. Its production is sensitive to both the quality of compounds used and the order of addition of particular compounds during the homogenization process. The mechanical properties were observed for four dosing procedures of each of the three tested concrete mixtures. The four dosing procedures were identical for the three mixes. The three mixes varied only in the type of supplementary cementitious material used and in water content. The water content difference was caused by variable k-value of particular additives. The water-to-binder ratio was kept constant for all the concretes. The additives used were metakaolin, fly ash and microsilica. The comparison of particular dosing procedures was carried out on the values of basic mechanical properties of concrete. The paper compares compressive strength and depth of penetration of water under pressure. Besides the comparsion of macro-mechanical properties, the effect of microsilica and fly ash additives on micro-mechanical properties was observed with the use of scanning electron microscopy (SEM) and nanoindentation data analysis. Nanoindentation was used to determine the thickness and strength of interfacial transition zone (ITZ) for different sequence of addition of cement, additive and aggregate. The thickness obtained by nanoindentation was further investigated by SEM EDS line scanning.

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Ojha, B., R. K. Sharma, and I. M. Amatya. "Application of Alum Sludge in Phosphate Phosphorus Removal from Contaminated Water." Journal of the Institute of Engineering 15, no. 2 (July 31, 2019): 141–46. http://dx.doi.org/10.3126/jie.v15i2.27659.

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This study determines application of alum sludge in phosphate phosphorus (PO43-/P) removal from contaminated water. For the study the alum sludge was collected from Mahankal Water Treatment Plant and dewatered by drying in micro oven under 105°C and crumble to average particle size of 5 mm. 10.7 ppm Synthetic PO43-/P solution was prepared by dissolving Na2HPO4.2H2O. Batch test was conduct to determine the PO43-/P removal efficiency and to develop adsorption isotherm. The phosphorus removal efficiency was tested for 8 g, 16 g, 24 g, 32 g and 40 g alum sludge per L PO43-/P solution for different contact time. The PO43-/P content in the sample solution was determine by L-Ascorbic Acid method using Spectrophotometer (Shimadzu UVmini-12400) in the lab of Pulchowk Campus, Institute of Engineering Tribhuvan University. The PO43-/P removal efficiency was found to be 95.5% for 8 g/L dosing and 98.4% % for 40 g/L. The contact time decreases with increase in dosing 50 min for 8 g/L and 5 min for 40 g/L dosing. The adsorption process best fit Freundlich isotherm with higher correlation coefficient (R2 = 0.87) and Freundlich intensity parameter (1/n) less than unit (1/n = 0.76) upto 50min contact time and beyond 50min contact time intensity parameter (1/n) greater than unit. The adsorption capacity determine from isotherm indicate increase in adsorption capacity with increase in dosing. The adsorption capacity increases from 1.39 to 28.07 mg/g when contract time varies from 1 to 120min.

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Pang, Da-Chen, and Chih-Ting Wang. "A Wireless-Driven, Micro, Axial-Flux, Single-Phase Switched Reluctance Motor." Energies 11, no. 10 (October 16, 2018): 2772. http://dx.doi.org/10.3390/en11102772.

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This study proposes a novel, axial-flux, single-phase switched reluctance motor for micro machines with wireless-driven capability. The rotor and stator each have two poles, and the stator utilizes two permanent magnets to provide the required parking position and rotational torque. By reducing the number of magnetic poles and coils in the stator, and by utilizing a cylindrical design for its stator components, the micro motor is able to be easily manufactured and assembled. Safety and convenience are also achieved through the use of a wireless drive, which negates the need for power connections or batteries. This study utilizes the topology method in rotor design to reduce excessive torque ripple. For this study, an actual micro, axial-flux, single-phase switched reluctance motor with a diameter of 5.5 mm and length of 4.4 mm was built in combination with a wireless charging module and motor circuitry found on the market. With an induced current of 0.7 A, the motor achieved a maximum of 900 rpm, indicating possible applications with respect to toys, micro-pumps, dosing pumps, and vessels for gases, liquids, or vacuum that do not require feedthrough.

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Thaçi, D., M. Bräutigam, R. Kaufmann, G. Weidinger, C. Paul, and E. Christophers. "Body-Weight-Independent Dosing of Cyclosporine Micro-Emulsion and Three Times Weekly Maintenance Regimen in Severe Psoriasis." Dermatology 205, no. 4 (2002): 383–88. http://dx.doi.org/10.1159/000066425.

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Mwinuka, Lutengano, Khamaldin Daud Mutabazi, Jeremia Makindara, and Stefan Sieber. "Reckoning the risks and rewards of fertilizer micro-dosing in a sub-humid farming system in Tanzania." African Journal of Science, Technology, Innovation and Development 8, no. 5-6 (November 29, 2016): 497–508. http://dx.doi.org/10.1080/20421338.2016.1257537.

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Likpètè, D. D., A. Adjogboto, P. B. I. Akponikpe, A. J. Djenontin, M. N. Baco, C. N. A. Sossa-Vihotogbe, and E. K. Agbossou. "Water use efficiency of local amaranth as affected by timing and application methods of fertilizer micro-dosing." Acta Horticulturae, no. 1238 (April 2019): 45–54. http://dx.doi.org/10.17660/actahortic.2019.1238.6.

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Baishya, L. K., M. A. Ansari, Dibyendu Sarkar, M. Ghosh, Sudhir Kumar, and N. Prakash. "Productivity enhancement in shifting cultivated lands through biofertilizer and micro-dosing of NPK in Eastern Himalayan Region." Research on Crops 17, no. 2 (2016): 268. http://dx.doi.org/10.5958/2348-7542.2016.00046.2.

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Vandamme, Elke, Kokou Ahouanton, Leah Mwakasege, Sigismund Mujuni, Gaudiose Mujawamariya, Josey Kamanda, Kalimuthu Senthilkumar, and Kazuki Saito. "Phosphorus micro-dosing as an entry point to sustainable intensification of rice systems in sub-Saharan Africa." Field Crops Research 222 (June 2018): 39–49. http://dx.doi.org/10.1016/j.fcr.2018.02.016.

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Long, Tao, Wei Xiao, and Wei Yang. "The effect of molecular assembly between collectors and inhibitors on the flotation of pyrite and talc." Royal Society Open Science 6, no. 10 (October 2019): 191133. http://dx.doi.org/10.1098/rsos.191133.

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In the flotation process, the traditional dosing sequence is to add an inhibitor first, followed by a collector. However, in the sorting process of copper sulfide ore, this method of dosing does not effectively separate sulfide minerals and layered magnesium silicate minerals. In this study, the effect of adding a guar gum (as an inhibitor) and potassium amyl xanthate (as a collector, shortened as PAX) sequence to the flotation separation of pyrite and talc was investigated by micro-flotation tests, adsorption amount measurements, contact angle measurement and FT-IR analysis. The results show that the collector only adsorbs on the pyrite surface, while the inhibitor has a strong adsorption capacity on the pyrite and talc surface. Through the change of the order of the flotation reagent addition, PAX preferentially adsorbs on the pyrite surface, thereby preventing guar gum from adsorbing on the pyrite surface and achieving the selective inhibition of talc by guar gum. This study will help in understanding the molecular assembly between collectors and inhibitors to further treat complex copper sulfide nickel ore.

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Chen, Xiaolong, Karlheinz Seyfang, and Hartwig Steckel. "Development of a micro-dosing system for fine powder using a vibrating capillary. Part 2. The implementation of a process analytical technology tool in a closed-loop dosing system." International Journal of Pharmaceutics 433, no. 1-2 (August 2012): 42–50. http://dx.doi.org/10.1016/j.ijpharm.2012.04.072.

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Journal articles on the topic 'Micro dosing'

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