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Journal articles on the topic 'Cell sinking'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Walsby, Anthony E., Patricia Lihou, and Juliet Roper. "Variation in sinking velocity and cell size of Microcystis sp." Algological Studies/Archiv für Hydrobiologie, Supplement Volumes 121 (October 1, 2006): 91–105. http://dx.doi.org/10.1127/1864-1318/2006/0121-0091.

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2

Gemmell, Brad J., Genesok Oh, Edward J. Buskey, and Tracy A. Villareal. "Dynamic sinking behaviour in marine phytoplankton: rapid changes in buoyancy may aid in nutrient uptake." Proceedings of the Royal Society B: Biological Sciences 283, no. 1840 (2016): 20161126. http://dx.doi.org/10.1098/rspb.2016.1126.

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Phytoplankton sinking is an important property that can determine community composition in the photic zone and material loss to the deep ocean. To date, studies of diatom suspension have relied on bulk measurements with assumptions that bulk rates adequately capture the essential characteristics of diatom sinking. However, recent work has illustrated that individual diatom sinking rates vary considerably from the mean bulk rate. In this study, we apply high-resolution optical techniques, individual-based observations of diatom sinking and a recently developed method of flow visualization aroun

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3

Moissoglu, Konstadinos, Ritankar Majumdar, and Carole A. Parent. "Cell Migration: Sinking in a Gradient." Current Biology 24, no. 1 (2014): R23—R25. http://dx.doi.org/10.1016/j.cub.2013.10.075.

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4

Waite, A., A. Fisher, PA Thompson, and PJ Harrison. "Sinking rate versus cell volume relationships illuminate sinking rate control mechanisms in marine diatoms." Marine Ecology Progress Series 157 (1997): 97–108. http://dx.doi.org/10.3354/meps157097.

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5

Font-Muñoz, Joan S., Raphaël Jeanneret, Jorge Arrieta, et al. "Collective sinking promotes selective cell pairing in planktonic pennate diatoms." Proceedings of the National Academy of Sciences 116, no. 32 (2019): 15997–6002. http://dx.doi.org/10.1073/pnas.1904837116.

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Finding a partner in an inherently unsteady 3-dimensional system, such as the planktonic marine environment, is a difficult task for nonswimming organisms with poor control over their orientation. We experimentally investigate the process of cell pairing in pennate marine diatoms and present field evidence of its occurrence in the ocean. We describe the mechanism as a 3-step process in which pennate diatoms (i) vertically reorient while sinking from surface turbulent waters to a more stable environment (i.e., under the seasonal pycnocline), (ii) segregate from incompatible partners (e.g., dead

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6

Edwards, Bethanie R., Kay D. Bidle, and Benjamin A. S. Van Mooy. "Dose-dependent regulation of microbial activity on sinking particles by polyunsaturated aldehydes: Implications for the carbon cycle." Proceedings of the National Academy of Sciences 112, no. 19 (2015): 5909–14. http://dx.doi.org/10.1073/pnas.1422664112.

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Diatoms and other phytoplankton play a crucial role in the global carbon cycle, fixing CO2into organic carbon, which may then be exported to depth via sinking particles. The molecular diversity of this organic carbon is vast and many highly bioactive molecules have been identified. Polyunsaturated aldehydes (PUAs) are bioactive on various levels of the marine food web, and yet the potential for these molecules to affect the fate of organic carbon produced by diatoms remains an open question. In this study, the effects of PUAs on the natural microbial assemblages associated with sinking particl

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7

Gabric, AJ, and J. Parslow. "Effect of physical factors on the vertical distribution of Phytoplankton in Eutrophic Coastal waters." Marine and Freshwater Research 40, no. 5 (1989): 559. http://dx.doi.org/10.1071/mf9890559.

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A new analytical model for the vertical distribution of phytoplankton in shallow, turbid waters is presented. The effects of vertical mixing, light-attenuated growth and algal-cell sinking rates are included. The two cases of a finite-depth water column and a mixed layer are investigated. The results for negatively buoyant cells suggest that concentration maxima can occur above the sea bed for either strong or weak mixing in a mixed layer but are always at the bed in finite-depth waters. Large-celled species with high sinking rates are least sustainable in stable water columns, especially a we

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8

Sciascia, R., S. De Monte, and A. Provenzale. "Physics of sinking and selection of plankton cell size." Physics Letters A 377, no. 6 (2013): 467–72. http://dx.doi.org/10.1016/j.physleta.2012.12.020.

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9

Liao, Huarui, and Jie Zhu. "Research Progress on Shengxian Decoction in the Treatment of Non-Small Cell Lung Cancer." Journal of Contemporary Medical Practice 6, no. 12 (2024): 88–94. https://doi.org/10.53469/jcmp.2024.06(12).18.

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Lung cancer has the highest incidence and mortality rates among malignant tumors in China, with non-small cell lung cancer (NSCLC) accounting for 80%-85% of lung cancer cases. In recent years, treatment methods such as surgery, radiotherapy, and chemotherapy have advanced significantly; however, issues such as numerous complications, severe side effects, and increased drug resistance remain. Traditional Chinese Medicine (TCM) offers a multi-component, multi-target, and multi-pathway approach for treating NSCLC without these drawbacks, which has attracted considerable attention. The fundamental

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10

OOYA, MAYUMI, YOSHIHIRO MOGAMI, AKEMI IZUMIKUROTANI, and SHOJI A. BABA. "GRAVITY-INDUCED CHANGES IN PROPULSION OF PARAMECIUM CAUDATUM: A POSSIBLE ROLE OF GRAVIRECEPTION IN PROTOZOAN BEHAVIOUR." Journal of Experimental Biology 163, no. 1 (1992): 153–67. http://dx.doi.org/10.1242/jeb.163.1.153.

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The swimming behaviour of Paramecium was analyzed under natural and experimental hypergravity conditions. Paramecium that swam upwards (in the opposite direction to the gravitational force) along a straight path (straight swimmers) swam more slowly than those swimming downwards. This dependence of the swimming velocity on its direction relative to gravity can be partly interpreted as the consequence of sinking due to gravity if the propulsive force does not vary. The effect was different for Paramecium swimming along a circular path (curved swimmers). The difference in velocity between those s

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11

Lumpkin, Rick, and Kevin Speer. "Global Ocean Meridional Overturning." Journal of Physical Oceanography 37, no. 10 (2007): 2550–62. http://dx.doi.org/10.1175/jpo3130.1.

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Abstract A decade-mean global ocean circulation is estimated using inverse techniques, incorporating air–sea fluxes of heat and freshwater, recent hydrographic sections, and direct current measurements. This information is used to determine mass, heat, freshwater, and other chemical transports, and to constrain boundary currents and dense overflows. The 18 boxes defined by these sections are divided into 45 isopycnal (neutral density) layers. Diapycnal transfers within the boxes are allowed, representing advective fluxes and mixing processes. Air–sea fluxes at the surface produce transfers bet

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12

Gomez, Jaime. "MISMATCH OF LABORATORY EGG SINKING RATES AND CROSS-SHELF VERTICAL DISTRIBUTIONS OF EARLY ONTOGENETIC STAGES OF TWO KRILL SPECIES OFF THE OREGON COAST." CICIMAR Oceánides 39, no. 2 (2025): 1–17. https://doi.org/10.37543/oceanides.v39i2.297.

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Egg sinking rates of the sympatric species Thysanoessa spinifera and Euphausia pacifica were investigated in the context of cross-shelf seawater conditions and vertical distributions of early ontogenetic stages (eggs, nauplii, calyptopes, and furciliae) along the Oregon coast during summer, 1977. The highest abundances of eggs, calyptopes and furciliae were near the surface (<30 m), and nauplii were in deeper layers (50–100 m), indicating that the eggs sank to <90 m depth and calyptopes migrated into shallower waters. Mean T. spinifera egg diameters were less (chorion 0.376; embryo 0.331

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13

Zeitzschel, B. "The dynamics of organic production in the Rockall Channel area." Proceedings of the Royal Society of Edinburgh. Section B. Biological Sciences 88 (1986): 207–20. http://dx.doi.org/10.1017/s0269727000004565.

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SynopsisFor the onset of the phytoplankton spring bloom in temperate waters, the irradiance, the concentration of accumulated nutrients and the stability of the water column are of great importance. The “new” production in spring is produced mainly by chain forming diatoms.The dissipation of the spring bloom is due to nutrient depletion in the stabilised surface layer, loss of cells by sinking and grazing by herbivorous zooplankton. After the nutrient concentration is lowered, the rate of production will depend primarily on the rate of replenishment of nutrients. In open ocean environments we

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14

Zika, Jan D., Willem P. Sijp, and Matthew H. England. "Vertical Heat Transport by Ocean Circulation and the Role of Mechanical and Haline Forcing." Journal of Physical Oceanography 43, no. 10 (2013): 2095–112. http://dx.doi.org/10.1175/jpo-d-12-0179.1.

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Abstract Vertical transport of heat by ocean circulation is investigated using a coupled climate model and novel thermodynamic methods. Using a streamfunction in temperature–depth coordinates, cells are identified by whether they are thermally direct (flux heat upward) or indirect (flux heat downward). These cells are then projected into geographical and other thermodynamic coordinates. Three cells are identified in the model: a thermally direct cell coincident with Antarctic Bottom Water, a thermally indirect deep cell coincident with the upper limb of the meridional overturning circulation,

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15

Hoson, T., S. Hayashi, and K. Hattori. "The contribution of sedimentation of algal cell to the downstream levels of musty odor." Water Science and Technology 31, no. 11 (1995): 139–44. http://dx.doi.org/10.2166/wst.1995.0423.

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In Lake Biwa, there are two peaks of 2-methylisoborneol (MIB) production, each of which is due to the different MIB producing algae, Phormidium and Oscillatoria. The former grows in early summer, whereas the latter grows in late summer. Levels of MIB were determined for water samples collected from Lake Biwa and the lower sampling site of Murano Water Treatment Plant's intake on Yodo River. MIB concentrations detected at the lower site differed between the two odor seasons. In the first episode due to growth of Phormidium, MIB level at the lower site was almost the same as that in the lake, wh

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16

Boyd, Philip W., and Fraser Kennedy. "Microbes in a sea of sinking particles." Nature Microbiology 6, no. 12 (2021): 1479–80. http://dx.doi.org/10.1038/s41564-021-01005-8.

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17

Shoushrah, Sarah Hani, Janis Lisa Transfeld, Christian Horst Tonk, et al. "Sinking Our Teeth in Getting Dental Stem Cells to Clinics for Bone Regeneration." International Journal of Molecular Sciences 22, no. 12 (2021): 6387. http://dx.doi.org/10.3390/ijms22126387.

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Dental stem cells have been isolated from the medical waste of various dental tissues. They have been characterized by numerous markers, which are evaluated herein and differentiated into multiple cell types. They can also be used to generate cell lines and iPSCs for long-term in vitro research. Methods for utilizing these stem cells including cellular systems such as organoids or cell sheets, cell-free systems such as exosomes, and scaffold-based approaches with and without drug release concepts are reported in this review and presented with new pictures for clarification. These in vitro appl

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18

Brzezinski, Mark A., and David M. Nelson. "Differential cell sinking as a factor influencing diatom species competition for limiting nutrients." Journal of Experimental Marine Biology and Ecology 119, no. 3 (1988): 179–200. http://dx.doi.org/10.1016/0022-0981(88)90192-x.

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19

Winder, Monika, John E. Reuter, and S. Geoffrey Schladow. "Lake warming favours small-sized planktonic diatom species." Proceedings of the Royal Society B: Biological Sciences 276, no. 1656 (2008): 427–35. http://dx.doi.org/10.1098/rspb.2008.1200.

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Diatoms contribute to a substantial portion of primary production in the oceans and many lakes. Owing to their relatively heavy cell walls and high nutrient requirements, planktonic diatoms are expected to decrease with climate warming because of reduced nutrient redistribution and increasing sinking velocities. Using a historical dataset, this study shows that diatoms were able to maintain their biovolume with increasing stratification in Lake Tahoe over the last decades; however, the diatom community structure changed. Increased stratification and reduced nitrogen to phosphorus ratios select

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20

Shoumura, Shingo, Ryo Hamano, Yasutaka Hanada, Shigeki Mayama, and Kazuo Umemura. "Single cell analysis of sinking diatoms studied using a homemade ‘tumbled’ optical microscope system." Journal of Microbiological Methods 168 (January 2020): 105804. http://dx.doi.org/10.1016/j.mimet.2019.105804.

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21

Liu, Hongbin, and Chih-Jung Wu. "Effect of the silica content of diatom prey on the production, decomposition and sinking of fecal pellets of the copepod <i>Calanus sinicus</i>." Biogeosciences 13, no. 16 (2016): 4767–75. http://dx.doi.org/10.5194/bg-13-4767-2016.

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Abstract. The effects of changing the amount of silica in the cell wall of diatom prey, on the production, decomposition rate and sinking velocity of fecal pellets of the calanoid copepod, Calanus sinicus, were examined. Using different light intensities to control the growth of the diatom Thalassiosira weissflogii also led to the accumulation of different amounts of biogenic silica. Copepods were then fed either low ( ∼ 1600 cells L−1) or high ( ∼ 8000 cells L−1) concentrations of this diatom. Copepods fed a high concentration of diatoms with high-silica content exhibited a lower grazing rate

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22

Walbaum, Stefan, Benjamin Ambrosy, Paula Schütz, et al. "Complement receptor 3 mediates both sinking phagocytosis and phagocytic cup formation via distinct mechanisms." Journal of Biological Chemistry 296 (January 2021): 100256. http://dx.doi.org/10.1016/j.jbc.2021.100256.

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23

Shimokawa, Michiko, and Toshiya Takami. "Effect of fluid viscosity on surface patterns formed by gravitational instability." Modern Physics Letters B 29, no. 35n36 (2015): 1550237. http://dx.doi.org/10.1142/s0217984915502371.

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When a droplet of a higher-density solution (HDS) is placed on the top of a lower-density solution (LDS), the HDS on the surface of the LDS sinks due to gravitational instability. In the sinking process, the HDS draws a fractal pattern or a hole/cell pattern on the surface of the LDS. It is observed that the surface pattern is determined by an aspect ratio of the container and viscosity of the LDS. In the formation of the surface pattern, a time series of the HDS density is analyzed. It is found that the profile of the series for the fractal pattern is different from that for the hole/cell pat

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24

Cessi, Paola. "The Effect of Northern Hemisphere Winds on the Meridional Overturning Circulation and Stratification." Journal of Physical Oceanography 48, no. 10 (2018): 2495–506. http://dx.doi.org/10.1175/jpo-d-18-0085.1.

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AbstractThe current paradigm for the meridional overturning cell and the associated middepth stratification is that the wind stress in the subpolar region of the Southern Ocean drives a northward Ekman flow, which, together with the global diapycnal mixing across the lower boundary of the middepth waters, feeds the upper branch of the interhemispheric overturning. The resulting mass transport proceeds to the Northern Hemisphere of the North Atlantic, where it sinks, to be eventually returned to the Southern Ocean at depth. Seemingly, the wind stress in the Atlantic basin plays no role. This as

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25

Gu, Lin, Lei Li, Wan Sheng Zhao, and K. P. Rajurkar. "Performance of Bunched-Electrode in EDM." Key Engineering Materials 447-448 (September 2010): 282–86. http://dx.doi.org/10.4028/www.scientific.net/kem.447-448.282.

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This paper aims to introduce the performance of bunched-electrode for die-sinking EDM. Bunched-electrode was formed by bunching numerous hollow cell-electrodes together to generate an electrode in which end surface matches the final surface of the mould cavity. FEM analysis and experiments were conducted to demonstrate the feasibility and effectiveness of bunched electrode in ED machining. Experiments show that while machining with bunched-electrode, it is feasible to apply a much higher peak current to achieve higher MRR. Meanwhile, a special phenomenon called shallow radial craters in machin

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26

Lindemann, Christian, Jan O. Backhaus, and John Michael A. St. "Physiological constrains on Sverdrup's Critical-Depth-Hypothesis: the influences of dark respiration and sinking." ICES Journal of Marine Science 72, no. 6 (2015): 1942–51. https://doi.org/10.1093/icesjms/fsv046.

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Discussions on the controls initiating the onset of the phytoplankton spring bloom in particular in the North Atlantic have since Sverdrup been dominated by the role of physical and biological drivers. Undoubtedly, these drivers play an important role in phytoplankton dynamics and thus the onset of the spring bloom. However, they neglect the cells ability to modify vital rates in response to changes in the external environment. In this study, we use a non-hydrostatic convection model coupled to an Individual-Based-Model to simulate changes phytoplankton cells during the transition from winter

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Smyrli, Aimilia, Duncan Mackay, and Francesca Zuccarello. "Magnetic helicity evolution inside a hexagonal convective cell." Proceedings of the International Astronomical Union 6, S274 (2010): 192–94. http://dx.doi.org/10.1017/s1743921311006909.

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AbstractMagnetic helicity has received considerable attention in the area of fluid dynamics. Recently, this quantity is attracting the interest of solar physicists and much research has been carried out related to magnetic helicity generation and transport through different solar layers, starting from the interior and the convection zone, towards the photosphere, the corona and finally into the heliosphere. Taking into account the global importance of supergranular cells in convection theories, we study the motion of magnetic features into such a geometrical element simplified as hexagonal cel

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28

Chertock, A., K. Fellner, A. Kurganov, A. Lorz, and P. A. Markowich. "Sinking, merging and stationary plumes in a coupled chemotaxis-fluid model: a high-resolution numerical approach." Journal of Fluid Mechanics 694 (February 2, 2012): 155–90. http://dx.doi.org/10.1017/jfm.2011.534.

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AbstractAquatic bacteria like Bacillus subtilis are heavier than water yet they are able to swim up an oxygen gradient and concentrate in a layer below the water surface, which will undergo Rayleigh–Taylor-type instabilities for sufficiently high concentrations. In the literature, a simplified chemotaxis–fluid system has been proposed as a model for bio-convection in modestly diluted cell suspensions. It couples a convective chemotaxis system for the oxygen-consuming and oxytactic bacteria with the incompressible Navier–Stokes equations subject to a gravitational force proportional to the rela

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29

Hoffmann, R., C. Kirchlechner, G. Langer, et al. "Insight into <i>Emiliania huxleyi</i> coccospheres by focused ion beam sectioning." Biogeosciences 12, no. 3 (2015): 825–34. http://dx.doi.org/10.5194/bg-12-825-2015.

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Abstract. Coccospheres of a cultured Emiliania huxleyi clone were sampled in the exponential growth phase and sectioned using a focused ion beam microscope. An average of 69 sections and the corresponding secondary electron micrographs per coccosphere provided detailed information on coccosphere architecture. The coccospheres feature 2–3 layers on average and 20 coccoliths per cell, of which only 15 can be seen in conventional scanning electron micrographs. The outer coccosphere diameter was positively correlated with the number of coccolith layers. By contrast, the inner coccosphere diameter

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30

Jindal, Caffey, and Rishikesh Pandey. "A class‐AB flipped voltage follower cell with high symmetrical slew rate and high current sourcing/sinking capability." International Journal of Circuit Theory and Applications 48, no. 7 (2020): 1108–23. http://dx.doi.org/10.1002/cta.2782.

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31

Chu, Pao-Shin, and Huaiqun Chen. "Interannual and Interdecadal Rainfall Variations in the Hawaiian Islands*." Journal of Climate 18, no. 22 (2005): 4796–813. http://dx.doi.org/10.1175/jcli3578.1.

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Abstract Hawaii rainfall has exhibited both interannual and interdecadal variations. On the interannual time scale, Hawaii tends to be dry during most El Niño events, but low rainfall also occurred in the absence of El Niño. On the interdecadal time scale, Hawaii rainfall is negatively and significantly correlated with the Pacific decadal oscillation (PDO) signal; an epoch of low rainfall persists from the mid-1970s to 2001, which is preceded by an epoch of high rainfall lasting for nearly 28 yr. Difference patterns in winter [November–December–January–February–March (NDJFM)] rainfall are inve

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32

Zhao, Xiaodong, Xu Cai, Xingya Zhou, et al. "Experimental Study on Compression and Torsion Fracture within 3D Printed Cementation-Weak and Porosity-High Sandstones." Geofluids 2023 (January 10, 2023): 1–18. http://dx.doi.org/10.1155/2023/6051378.

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Cretaceous sandstones have weak cementation and high porosity while exhibit a high apparent brittleness. Compression and torsion (C-T) fractures are widely distributed in Cretaceous sandstones due to asymmetric tectonic convergence action. However, studies on C-T fracture formation and the mechanisms causing variability in Cretaceous sandstones containing no oil or gas are rare due to the challenges in sampling intact sandstone cores, despite their significance to mine shaft sinking. Therefore, this study used binder jetting-based 3D printing to prepare artificial Cretaceous sandstone and deve

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33

Baryshev, Alexander, and Galina Khachatryan. "Geodynamics, diamondiferous system tectonics and minerageny." Domestic geology, no. 6 (January 22, 2021): 88–108. http://dx.doi.org/10.47765/0869-7175-2020-10033.

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The paper presents a unique geodynamic evolution concept of all processes and structures ensuring carbon source formation and movement for diamond crystals growth in the mantle, and diamondiferous medium supply to the surface. Geodynamic basis for diamond formation is exogenetic source sinking in old subduction zones evolving along convection cell edges. The supply is ongoing in an advection system, with transtension combined with convection playing a key role. The paper shows periods of spatial pipe cluster location and tectonophysical pattern of this phenomenon. Based on geodynamics, the aut

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34

Put, V., M. Gladyshev, A. Dolgalev, et al. "Implant-prosthetic rehabilitation and ectoprosthetics of a patient with an extensive defect of the right orbit. Clinical case. Part 2." Medical alphabet, no. 28 (January 10, 2025): 55–59. https://doi.org/10.33667/2078-5631-2024-28-55-59.

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Orbital ectoprosthesis is a complex, multifunctional problem. Removal of the right eyeball and surrounding tissues after combined treatment of basal cell carcinoma of the right orbit led to the formation of a defect that disrupted the patient’s quality of life. The key factor for successful treatment is the area of proper placement of implants in the orbit, taking into account the anatomy of the left eye, deep sinking of the surrounding tissues. The rehabilitation of a patient with a defect in the right orbit was implemented using an implant-prosthetic design. At the stages of treatment, the t

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Shih, Zun-Hao, Ke-Jen Chain, and Hwen-Fen Hong. "Study of Phase Change Materials Applied to CPV Receivers." Journal of Nanomaterials 2015 (2015): 1–5. http://dx.doi.org/10.1155/2015/672328.

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There are lots of factors which can directly affect output efficiency of photovoltaic device. One of them is high temperature which would cause adverse effect to solar cell. When solar cell is operated in high temperature, the cell’s output efficiency will become low. Therefore, improving thermal spreading of solar cell is an important issue. In this study, we focused on finding new materials to enhance the thermal dispreading and keep the temperature of solar cell as low as possible. The new materials are different from conventional metal ones; they are called “phase change materials (PCMs)”

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Sijp, Willem P., and Matthew H. England. "Role of the Drake Passage in Controlling the Stability of the Ocean’s Thermohaline Circulation." Journal of Climate 18, no. 12 (2005): 1957–66. http://dx.doi.org/10.1175/jcli3376.1.

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Abstract The role of a Southern Ocean gateway in permitting multiple equilibria of the global ocean thermohaline circulation is examined. In particular, necessary conditions for the existence of multiple equilibria are studied with a coupled climate model, wherein stable solutions are obtained for a range of bathymetries with varying Drake Passage (DP) depths. No transitions to a Northern Hemisphere (NH) overturning state are found when the Drake Passage sill is shallower than a critical depth (1100 m in the model described herein). This preference for Southern Hemisphere sinking is a result o

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Fritz, Jennifer J., and William M. Balch. "A light-limited continuous culture study of Emiliania huxleyi: determination of coccolith detachment and its relevance to cell sinking." Journal of Experimental Marine Biology and Ecology 207, no. 1-2 (1996): 127–47. http://dx.doi.org/10.1016/s0022-0981(96)02633-0.

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Kanso, Eva A., Rubens M. Lopes, J. Rudi Strickler, John O. Dabiri, and John H. Costello. "Teamwork in the viscous oceanic microscale." Proceedings of the National Academy of Sciences 118, no. 29 (2021): e2018193118. http://dx.doi.org/10.1073/pnas.2018193118.

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Nutrient acquisition is crucial for oceanic microbes, and competitive solutions to solve this challenge have evolved among a range of unicellular protists. However, solitary solutions are not the only approach found in natural populations. A diverse array of oceanic protists form temporary or even long-lasting attachments to other protists and marine aggregates. Do these planktonic consortia provide benefits to their members? Here, we use empirical and modeling approaches to evaluate whether the relationship between a large centric diatom, Coscinodiscus wailesii, and a ciliate epibiont, Pseudo

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39

Minh, Tran Van. "Industrial Propagation of Phalaenopsis sp. by Bioreactor Technique." International Journal of Research and Innovation in Applied Science VIII, no. IV (2023): 29–39. http://dx.doi.org/10.51584/ijrias.2023.8404.

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Protocorm like bodies (PLB) were used as planting materials. Somatic embryo callus were initiated on medium supplemented with NAA (1mg/l) or 2.4D (1mg/l). Somatic cell suspension were cultured for initiation and for proliferation. on medium MS supplemented with NAA (1mg/l) and NAA (0.5mg/l). The volume of somatic cell suspension for bioreactor cultivation was 20%. Somatic embryo suspension were cultured in bioreactor for initiation and proliferation on the medium MS supplemented with NAA (0.5mg/l). Embryogenic suspension was stimulated on the medium MS supplemented with BA (0.5mg/l) + NAA (0.1

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Vincent, Flora, Uri Sheyn, Ziv Porat, Daniella Schatz, and Assaf Vardi. "Visualizing active viral infection reveals diverse cell fates in synchronized algal bloom demise." Proceedings of the National Academy of Sciences 118, no. 11 (2021): e2021586118. http://dx.doi.org/10.1073/pnas.2021586118.

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Marine viruses are the most abundant biological entity in the ocean and are considered as major evolutionary drivers of microbial life [C. A. Suttle, Nat. Rev. Microbiol. 5, 801–812 (2007)]. Yet, we lack quantitative approaches to assess their impact on the marine ecosystem. Here, we provide quantification of active viral infection in the bloom forming single-celled phytoplankton Emiliania huxleyi infected by the large virus EhV, using high-throughput single-molecule messenger RNA in situ hybridization (smFISH) of both virus and host transcripts. In natural samples, viral infection reached onl

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Fursova, P. V., G. Yu Riznichenko, I. V. Konyukhov, and S. I. Pogosyan. "Agent-Based Model of Diatom Population Dynamics in Marginal Arctic Seas in Summer." Океанология 63, no. 5 (2023): 773–83. http://dx.doi.org/10.31857/s0030157423050040.

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A hypothesis is proposed for the functioning of the diatom population under conditions of water column stratification. It is assumed that cells in the upper illuminated water layer accumulate biomass due to photosynthesis. In the lower layer, rich in minerals, the cells replenish their intracellular reserves. Moving from one layer to another allows to cells to compensate for the lack of resources. Sinking occurs as a result of sedimentation, and lifting occurs due to the release of carbon dioxide microbubbles in the process of respiration. On the basis of this hypothesis, an agent model of the

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Klímek, Petr, Václav Sebera, Darius Tytko, Martin Brabec, and Jaroslav Lukeš. "Micromechanical properties of beech cell wall measured by micropillar compression test and nanoindentation mapping." Holzforschung 74, no. 9 (2020): 899–904. http://dx.doi.org/10.1515/hf-2019-0128.

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AbstractWood exhibits very different behavior and properties at different scales. One important scale is the cell wall (CW) that is commonly tested by nanoindentation. Common nanoindentation provides important insight into the material but has limitations because it does not apply uniaxial stress and provides data from single spots. Therefore, the aim was to examine beech CW using two state-of-the-art techniques: micropillar compression (MCo) and nanoindentation mapping (NIP). The mean strength of the beech CW was found to be about 276 MPa and the mean yield stress was 183 MPa. These values we

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Minh, Tran Van. "Industrial Propagation of Rhynchostylis Sp. By Bioreactor Technique." International Journal of Research and Innovation in Applied Science 07, no. 06 (2022): 74–79. http://dx.doi.org/10.51584/ijrias.2022.7605.

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Rhyncostylis sp. propagation by multi-shoot system induction from meristem culture in invitro. It take more labor, energy, large area, and high cost. Plant cell technology is effective way for micropropagation in bioreactor. Protocorm like bodies were used as planting materials. Somatic embryo callus were initiated on medium MS + IAA (1.0 mg/l). Somatic cell suspension were cultured for initiation and for proliferation on medium MS + 2.4D (0.5 mg/l) + kinetin (1 mg/l). The volume of somatic cell suspension for bioreactor cultivation was 20%. Somatic embryo suspension were cultured in bioreacto

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Mendelson, Neil H., and Joceline Lega. "A Complex Pattern of Traveling Stripes Is Produced by Swimming Cells of Bacillus subtilis." Journal of Bacteriology 180, no. 13 (1998): 3285–94. http://dx.doi.org/10.1128/jb.180.13.3285-3294.1998.

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ABSTRACT Motile cells of Bacillus subtilis inadvertently escaped from the surface of an agar disk that was surrounded by a fluid growth medium and formed a migrating population in the fluid. When viewed from above, the population appeared as a cloud advancing unidirectionally into the fresh medium. The cell population became spontaneously organized into a series of stripes in a region behind the advancing cloud front. The number of stripes increased progressively until a saturation value of stripe density per unit area was reached. New stripes arose at a fixed distance behind the cloud front a

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Arrieta, J., R. Jeanneret, P. Roig, and I. Tuval. "On the fate of sinking diatoms: the transport of active buoyancy-regulating cells in the ocean." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 378, no. 2179 (2020): 20190529. http://dx.doi.org/10.1098/rsta.2019.0529.

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Diatoms are one of the most abundant, diverse and ecologically relevant phytoplanktonic group, contributing enormously to global biogeochemical processes like the carbon and silica cycles. This large success has been partly attributed to the mechanical and optical properties of the silica shell (the frustule) that envelops their body. But since they lack motility it is difficult to conceive how they cope with the fast-fluctuating environment they live in and where distributions of resources are very heterogeneous and dynamical. This pinpoints an important but yet poorly understood feature of d

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ZHAO, XINHONG, PENG WANG, and NAIFEI REN. "SUNKEN HOLLOW CARBON SPHERES SUPPORTED Pt ELECTROCATALYST FOR EFFICIENT METHANOL OXIDATION AND OXYGEN REDUCTION REACTION." Nano 09, no. 07 (2014): 1450079. http://dx.doi.org/10.1142/s1793292014500799.

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Sunken hollow carbon spheres (SHCs) are prepared by using glucose as carbon source and polystyrene spheres (PSs) as templates. Pt particles are then loaded on the SHCs as electrocatalyst and used for catalyzing both methanol oxidation and oxygen reduction reaction (ORR) in acidic media. Physical measurements show that the SHCs are formed due to sinking of hollow carbon spheres. It can be imagined that the SHCs have the similar specific surface area as hollow carbon spheres with reduced volume. Moreover, the SHCs have high surface area (786.3 m2 ⋅ g-1) with hollow and sunken structure are benef

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Zhang, Qi, Rongrong Lin, Jun Yang, et al. "Transcriptome Analysis Reveals That C17 Mycosubtilin Antagonizes Verticillium dahliae by Interfering with Multiple Functional Pathways of Fungi." Biology 12, no. 4 (2023): 513. http://dx.doi.org/10.3390/biology12040513.

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Verticillium wilt is a kind of soil-borne plant fungal disease caused by Verticillium dahliae (Vd). Vd 991 is a strong pathogen causing cotton Verticillium wilt. Previously, we isolated a compound from the secondary metabolites of Bacillus subtilis J15 (BS J15), which showed a significant control effect on cotton Verticillium wilt and was identified as C17 mycosubtilin. However, the specific fungistatic mechanism by which C17 mycosubtilin antagonizes Vd 991 is not clear. Here, we first showed that C17 mycosubtilin inhibits the growth of Vd 991 and affects germination of spores at the minimum i

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Wolfe, Christopher L., and Paola Cessi. "Overturning Circulation in an Eddy-Resolving Model: The Effect of the Pole-to-Pole Temperature Gradient." Journal of Physical Oceanography 39, no. 1 (2009): 125–42. http://dx.doi.org/10.1175/2008jpo3991.1.

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Abstract The effect of the pole-to-pole surface temperature difference on the deep stratification and the strength of the global meridional overturning circulation (MOC) is examined in an eddy-resolving ocean model configured in an idealized domain roughly representing the Atlantic sector. Mesoscale eddies lead to qualitative differences in the mean stratification and the MOC compared to laminar (i.e., eddy free) models. For example, the spreading of fluid across the model’s representation of the Antarctic Circumpolar Current (ACC) no longer relies on the existence of a sill in the ACC. In add

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Qiao, Yangyang, and Steinar Evje. "A general cell–fluid Navier–Stokes model with inclusion of chemotaxis." Mathematical Models and Methods in Applied Sciences 30, no. 06 (2020): 1167–215. http://dx.doi.org/10.1142/s0218202520400096.

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The main purpose of this work is to explore a general cell–fluid model which is based on a mixture theory formulation that accounts for the interplay between oxytactically (chemotaxis toward gradient in oxygen) moving bacteria cells in water and the buoyance forces caused by the difference in density between cells and fluid. The model involves two mass balance and two general momentum balance equations, respectively, for the cell and fluid phase, combined with a convection–diffusion–reaction equation for oxygen. In particular, the momentum balance equations include interaction terms which desc

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Minh, Tran Van. "Industrial Propagation of Cymbidium Sp. by Bioreactor Technique." International Journal of Research and Innovation in Applied Science 07, no. 07 (2022): 01–06. http://dx.doi.org/10.51584/ijrias.2022.7701.

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Micropropagation of orchid plant for conservation and development is needing. Traditional propagation of Cymbidium sp. requires energy cost, many labor, large area for growing, slow growth and development, and high cost input. It is a need to find new effective ways for in vitro propagation, and plant cell technology via bioreactor techniques effort the demands. Protocorm like bodies were used as planting materials. Somatic embryo callus were initiated on medium MS + BA (0.1 mg/l) supplemented with NAA (1 mg/l) or 2,4D (1 mg/l). Somatic cell suspension were cultured for initiation and for prol

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