Relevant bibliographies by topics / Furrow

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  2. Dissertations / Theses
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  4. Book chapters
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Academic literature on the topic 'Furrow'

Author: Grafiati
Published: 4 June 2021
Last updated: 2 February 2022

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Journal articles on the topic "Furrow"

1

Dibal, Jibrin M., A. A. Ramalan, O. J. Mudiare, and H. E. Igbadun. "Scenario Studies on Effects of Soil Infiltration Rates, Land Slope, and Furrow Irrigation Characteristics on Furrow Irrigation-Induced Erosion." International Scholarly Research Notices 2014 (November 10, 2014): 1–6. http://dx.doi.org/10.1155/2014/942732.

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Furrow irrigation proceeds under several soil-water-furrow hydraulics interaction dynamics. The soil erosion consequences from such interactions in furrow irrigation in Samaru had remained uncertain. A furrow irrigation-induced erosion (FIIE) model was used to simulate the potential severity of soil erosion in irrigated furrows due to interactive effects of infiltration rates, land slope, and some furrow irrigation characteristics under different scenarios. The furrow irrigation characteristics considered were furrow lengths, widths, and stream sizes. The model itself was developed using the dimensional analysis approach. The scenarios studied were the interactive effects of furrow lengths, furrow widths, and slopes steepness; infiltration rates and furrow lengths; and stream sizes, furrow lengths, and slopes steepness on potential furrow irrigation-induced erosion, respectively. The severity of FIIE was found to relate somewhat linearly with slope and stream size, and inversely with furrow lengths and furrow width. The worst soil erosion (378.05 t/ha/yr) was found as a result of the interactive effects of 0.65 m furrow width, 50 m furrow length, and 0.25% slope steepness; and the least soil erosion (0.013 t/ha/yr) was induced by the combined effects of 0.5 l/s, 200 m furrow length, and 0.05% slope steepness. Evidently considering longer furrows in furrow irrigation designs would be a better alternative of averting excessive FIIE.
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Sherlekar, Aparna, and Richa Rikhy. "Syndapin promotes pseudocleavage furrow formation by actin organization in the syncytial Drosophila embryo." Molecular Biology of the Cell 27, no. 13 (July 2016): 2064–79. http://dx.doi.org/10.1091/mbc.e15-09-0656.

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Coordinated membrane and cytoskeletal remodeling activities are required for membrane extension in processes such as cytokinesis and syncytial nuclear division cycles in Drosophila. Pseudocleavage furrow membranes in the syncytial Drosophila blastoderm embryo show rapid extension and retraction regulated by actin-remodeling proteins. The F-BAR domain protein Syndapin (Synd) is involved in membrane tubulation, endocytosis, and, uniquely, in F-actin stability. Here we report a role for Synd in actin-regulated pseudocleavage furrow formation. Synd localized to these furrows, and its loss resulted in short, disorganized furrows. Synd presence was important for the recruitment of the septin Peanut and distribution of Diaphanous and F-actin at furrows. Synd and Peanut were both absent in furrow-initiation mutants of RhoGEF2 and Diaphanous and in furrow-progression mutants of Anillin. Synd overexpression in rhogef2 mutants reversed its furrow-extension phenotypes, Peanut and Diaphanous recruitment, and F-actin organization. We conclude that Synd plays an important role in pseudocleavage furrow extension, and this role is also likely to be crucial in cleavage furrow formation during cell division.
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Silverman-Gavrila, Rosalind V., Karen G. Hales, and Andrew Wilde. "Anillin-mediated Targeting of Peanut to Pseudocleavage Furrows Is Regulated by the GTPase Ran." Molecular Biology of the Cell 19, no. 9 (September 2008): 3735–44. http://dx.doi.org/10.1091/mbc.e08-01-0049.

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During early development in Drosophila, pseudocleavage furrows in the syncytial embryo prevent contact between neighboring spindles, thereby ensuring proper chromosome segregation. Here we demonstrate that the GTPase Ran regulates pseudocleavage furrow organization. Ran can exert control on pseudocleavage furrows independently of its role in regulating the microtubule cytoskeleton. Disruption of the Ran pathway prevented pseudocleavage furrow formation and restricted the depth and duration of furrow ingression of those pseudocleavage furrows that did form. We found that Ran was required for the localization of the septin Peanut to the pseudocleavage furrow, but not anillin or actin. Biochemical assays revealed that the direct binding of the nuclear transport receptors importin α and β to anillin prevented the binding of Peanut to anillin. Furthermore, RanGTP reversed the inhibitory action of importin α and β. On expression of a mutant form of anillin that lacked an importin α and β binding site, inhibition of Ran no longer restricted the depth and duration of furrow ingression in those pseudocleavage furrows that formed. These data suggest that anillin and Peanut are involved in pseudocleavage furrow ingression in syncytial embryos and that this process is regulated by Ran.
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Ludvigsen, Rolf. "Revision of Acheilus and Theodenisia (Late Cambrian, Trilobita)." Journal of Paleontology 60, no. 1 (January 1986): 61–67. http://dx.doi.org/10.1017/s002233600002151x.

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Acheilus Clark, 1924, is a kingstoniid trilobite, not a catillicephalid or an unrecognizable genus as previously thought. The catillicephalid Theodenisia Clark, 1948, is here restricted to those species in which the axial furrows terminate at the 4s furrow and which lack a preglabellar furrow. Peracheilus n. gen. is proposed as a replacement name for the catillicephalid Acheilus Raymond, 1924. It includes those species previously assigned to Theodenisia in which the axial furrows continue past the 4s furrow to join a narrow preglabellar furrow. Acheilus, Theodenisia, and Peracheilus occur in the Late Sunwaptan of North America; Theodenisia also occurs in the early Ibexian.
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Dibal, Jibrin M., H. E. Igbadun, A. A. Ramalan, and O. J. Mudiare. "Modelling Furrow Irrigation-Induced Erosion on a Sandy Loam Soil in Samaru, Northern Nigeria." International Scholarly Research Notices 2014 (November 11, 2014): 1–8. http://dx.doi.org/10.1155/2014/982136.

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Assessment of soil erosion and sediment yield in furrow irrigation is limited in Samaru-Zaria. Data was collected in 2009 and 2010 and was used to develop a dimensionless model for predicting furrow irrigation-induced erosion (FIIE) using the dimensional analyses approach considering stream size, furrow length, furrow width, soil infiltration rate, hydraulic shear stress, soil erodibility, and time flow of water in the furrows as the building components. One liter of water-sediment samples was collected from the furrows during irrigations from which sediment concentrations and soil erosion per furrow were calculated. Stream sizes Q (2.5, 1.5, and 0.5 l/s), furrow lengths X (90 and 45 m), and furrow widths W (0.75 and 0.9 m) constituted the experimental factors randomized in a split plot design with four replications. Water flow into and out of the furrows was measured using cutthroat flumes. The model produced reasonable predictions relative to field measurements with coefficient of determination R2 in the neighborhood of 0.8, model prediction efficiency NSE (0.7000), high index of agreement (0.9408), and low coefficient of variability (0.4121). The model is most sensitive to water stream size. The variables in the model are easily measurable; this makes it better and easily adoptable.
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Lentz, Rick D., Eduardo Bautista, Anita Koehn, and Robert Sojka. "Infiltration and Soil Water Distribution in Irrigation Furrows Treated with Polyacrylamide." Transactions of the ASABE 63, no. 5 (2020): 1451–64. http://dx.doi.org/10.13031/trans.13939.

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HighlightsControl furrows with 1× inflow rates were compared with 3× advance inflows treated with 10 mg L-1 polymer (WSPAM).WSPAM reduced sediment loads in furrow streams by 89%, despite its 3× greater advance inflows.WSPAM furrow advance times and infiltrated volumes were greater than predicted from increased inflows alone.WSPAM enabled reduced upper-section infiltration and increased lower-section infiltration relative to control furrows.Abstract. Few if any studies have measured the effects of water-soluble anionic polyacrylamide (WSPAM) on infiltration and soil water distribution in different segments of irrigation furrows. We conducted a four-year study on a silt loam soil with 1.5% slopes. Control furrows received no WSPAM and inflows were 15.1 L min-1, whereas WSPAM was applied using 10 mg L-1 a.i. to 45 L min-1 inflows during furrow advance. Despite its greater advance phase inflow rates, WSPAM application reduced sediment concentrations in furrow streams by an average of 89% relative to the control. A surface irrigation model, WinSRFR 5.1, was used to separate furrow inflow rate effects on infiltration from that of WSPAM. Relative to results predicted by simulation for the entire furrow, the polymer treatment: (1) increased advance time an average 1.4-fold, (2) increased advance-phase infiltrated volume 1.5-fold, and (3) increased infiltration volume at the common opportunity time 1.2-fold. Hence, these effects resulted from WSPAM and not from differences in treatment inflow rates. Treatment infiltration amounts varied markedly among irrigations and years, as did the intensity of WSPAM effects. These were attributed mainly to differences in infiltration opportunity time, but temporal differences in soil water content during furrow formation, irrigation water electrical conductivity, initial soil surface water content and water temperature, and the irrigation-long, furrow-stream mean sediment content also appear to have influenced infiltration rates. Although inconsistent, WSPAM increased net furrow infiltration in the lower section and reduced infiltration in the upper section relative to control furrows. This effect could not be explained by the greater inflow rate and shorter advance time of the WSPAM treatments and was attributed to spatially variable WSPAM effects on infiltration opportunity time and possibly irrigation water viscosity. The WSPAM management approach, while protecting against furrow erosion, may potentially provide a means of improving irrigation uniformity and reducing associated percolation water and nutrient losses. Keywords: Furrow advance, Irrigation, Irrigation uniformity, Polymers.
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Lewellyn, Lindsay, Julien Dumont, Arshad Desai, and Karen Oegema. "Analyzing the Effects of Delaying Aster Separation on Furrow Formation during Cytokinesis in the Caenorhabditis elegans Embryo." Molecular Biology of the Cell 21, no. 1 (January 2010): 50–62. http://dx.doi.org/10.1091/mbc.e09-01-0089.

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Signaling by the centrosomal asters and spindle midzone coordinately directs formation of the cytokinetic furrow. Here, we explore the contribution of the asters by analyzing the consequences of altering interaster distance during the first cytokinesis of the Caenorhabditis elegans embryo. Delaying aster separation, by using TPXL-1 depletion to shorten the metaphase spindle, leads to a corresponding delay in furrow formation, but results in a single furrow that ingresses at a normal rate. Preventing aster separation, by simultaneously inhibiting TPXL-1 and Gα signaling-based cortical forces pulling on the asters, delays furrow formation and leads to the formation of multiple furrows that ingress toward the midzone. Disrupting midzone-based signaling, by depleting conserved midzone complexes, results in a converse phenotype: neither the timing nor the number of furrows is affected, but the rate of furrow ingression is decreased threefold. Simultaneously delaying aster separation and disrupting midzone-based signaling leads to complete failure of furrow formation. Based on these results, we propose that signaling by the separated asters executes two critical functions: 1) it couples furrow formation to anaphase onset by concentrating contractile ring proteins on the equatorial cortex in a midzone-independent manner and 2) it subsequently refines spindle midzone-based signaling to restrict furrowing to a single site.
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Carroll, C., M. Halpin, K. Bell, and J. Mollison. "The effect of furrow length on rain and irrigation-induced erosion on a vertisol in Australia." Soil Research 33, no. 5 (1995): 833. http://dx.doi.org/10.1071/sr9950833.

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Runoff and sediment movement were measured from irrigated furrows of different lengths on a Vertisol in central Queensland. Two farm properties (Denaro's and Roberts') were used to compare a short furrow length (SFL) and a long furrow length (LFL). At Denaro's farm, furrows were 241 and 482 m long, and at Roberts' farm they were 151 and 298 m long, with gradients of 1.0% and 1.3% respectively. Runoff and soil loss were measured from six furrows. At Denaro's farm, soil movement off the farm was measured at a taildrain outlet. Sediment concentration from both rainfall and irrigation declined when cultivation had ceased, soil in the furrows had consolidated and when the cotton canopy provided surface cover. Total soil loss from rainfall and irrigation was approximately 4-5 t ha-1. Rainstorms caused most of the seasonal soil loss, typically 3-4 t ha-1. The critical soil erosion period was between pre-plant irrigation and canopy closure. Soil surface cover, peak runoff rate and furrow length explained 97% of variance in soil loss caused by rainfall. Furrow length was not significant in the soil loss model for irrigation (r2 0.59).
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Albertson, Roger, Jian Cao, Tao-shih Hsieh, and William Sullivan. "Vesicles and actin are targeted to the cleavage furrow via furrow microtubules and the central spindle." Journal of Cell Biology 181, no. 5 (May 26, 2008): 777–90. http://dx.doi.org/10.1083/jcb.200803096.

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During cytokinesis, cleavage furrow invagination requires an actomyosin-based contractile ring and addition of new membrane. Little is known about how this actin and membrane traffic to the cleavage furrow. We address this through live analysis of fluorescently tagged vesicles in postcellularized Drosophila melanogaster embryos. We find that during cytokinesis, F-actin and membrane are targeted as a unit to invaginating furrows through formation of F-actin–associated vesicles. F-actin puncta strongly colocalize with endosomal, but not Golgi-derived, vesicles. These vesicles are recruited to the cleavage furrow along the central spindle and a distinct population of microtubules (MTs) in contact with the leading furrow edge (furrow MTs). We find that Rho-specific guanine nucleotide exchange factor mutants, pebble (pbl), severely disrupt this F-actin–associated vesicle transport. These transport defects are a consequence of the pbl mutants' inability to properly form furrow MTs and the central spindle. Transport of F-actin–associated vesicles on furrow MTs and the central spindle is thus an important mechanism by which actin and membrane are delivered to the cleavage furrow.
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Onishi, Masayuki, James G. Umen, Frederick R. Cross, and John R. Pringle. "Cleavage-furrow formation without F-actin inChlamydomonas." Proceedings of the National Academy of Sciences 117, no. 31 (July 20, 2020): 18511–20. http://dx.doi.org/10.1073/pnas.1920337117.

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It is widely believed that cleavage-furrow formation during cytokinesis is driven by the contraction of a ring containing F-actin and type-II myosin. However, even in cells that have such rings, they are not always essential for furrow formation. Moreover, many taxonomically diverse eukaryotic cells divide by furrowing but have no type-II myosin, making it unlikely that an actomyosin ring drives furrowing. To explore this issue further, we have used one such organism, the green algaChlamydomonas reinhardtii. We found that although F-actin is associated with the furrow region, none of the three myosins (of types VIII and XI) is localized there. Moreover, when F-actin was eliminated through a combination of a mutation and a drug, furrows still formed and the cells divided, although somewhat less efficiently than normal. Unexpectedly, division of the largeChlamydomonaschloroplast was delayed in the cells lacking F-actin; as this organelle lies directly in the path of the cleavage furrow, this delay may explain, at least in part, the delay in cytokinesis itself. Earlier studies had shown an association of microtubules with the cleavage furrow, and we used a fluorescently tagged EB1 protein to show that microtubules are still associated with the furrows in the absence of F-actin, consistent with the possibility that the microtubules are important for furrow formation. We suggest that the actomyosin ring evolved as one way to improve the efficiency of a core process for furrow formation that was already present in ancestral eukaryotes.
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Dissertations / Theses on the topic "Furrow"

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Nyawakira, Bernard 1955. "Evaluation of two furrow infiltration measuring methods and furrow spacings." Thesis, The University of Arizona, 1989. http://hdl.handle.net/10150/277171.

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The effect of furrow spacing on infiltration should be determined in order to properly design an irrigation system. The blocked furrow infiltrometer (BFI) and the flowing furrow infiltrometer (FFI) methods were investigated for this purpose in two areas upon a precision field furrow. Three irrigations were performed in each method. The initial and final soil moisture contents (before and after irrigation), the furrow cross-section (before and after irrigation), the inflow volume and the furrow water surface elevations (during irrigation) were measured in each test furrow. Cumulative infiltration and infiltration rates were determined for each irrigation. The results indicate that the FFI test furrows infiltrated more water than did the BFI test furrows for the same infiltration time. The infiltration rates were higher in the FFI test furrows than in the BFI test furrows until they approach the basic intake rate. The infiltration rates were also higher during the 0.90 m spacing tests than during the 1.80 m spacing tests. The 0.90 m spacing test furrows infiltrated more water than did the 1.80 m spacing test furrows.
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Silva, Euzebio Medrado da. "Analysis of furrow irrigation uniformity as affected by furrow spacing." Diss., The University of Arizona, 1990. http://hdl.handle.net/10150/185190.

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This research examines the effects of furrow spacing on irrigation uniformity and efficiency. Laboratory and field experiments were conducted to obtain information on soil physical characteristics, furrow infiltration and water advance data in order to validate the theoretical results. A furrow infiltration model based on Richards' equation and a finite element technique is developed and used to predict infiltrated depths in the transverse and longitudinal directions relative to the furrow centerline and furrow inlet, respectively. The model predicted measured furrow infiltration in the field from the third irrigation but failed to do so for the first and second irrigations. Simulations of furrow irrigation in a hypothetical soil with various furrow spacings showed that cumulative infiltration is not affected by furrow spacing until the lateral wetting front reaches the imaginary vertical boundary located midway between two furrows. An analysis of uniformity and efficiency from predicted water distribution profiles from field irrigated furrows are conclusive in that the use of longitudinal water distribution profile alone is not enough to assess the performance of furrow irrigation. The transverse distribution of infiltrated depths which is a function of furrow spacing must be included in the analysis.
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Thaemert, David Karl 1967. "Kostiakov infiltration functions for level furrow design." Thesis, The University of Arizona, 1991. http://hdl.handle.net/10150/277841.

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More efficient water application is generally achieved when the design parameters match actual field conditions. On four sites, Kostiakov infiltration functions were derived from cylinder and blocked furrow infiltrometers and SCS (Soil Conservation Service) intake families according to soil type. An infiltration function was also developed using a hydrodynamic computer model to adjust equation parameters to fit field data. Computer simulations of level furrow irrigation, using each Kostiakov infiltration function, were compared to actual field data. Excluding those functions fit to the field data, Kostiakov infiltration functions obtained from blocked furrow infiltrometers generally provided the most consistent input for level furrow irrigation design and evaluation.
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Manning, Charles Roger 1956. "Infiltration parameters for mathematical models of furrow irrigation." Thesis, The University of Arizona, 1993. http://hdl.handle.net/10150/278286.

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The effort to improve furrow irrigation design and management by use of mathematical models is hampered by the difficulty of obtaining infiltration parameters that adequately describe the infiltration process in furrows. This difficulty is related to the effect on infiltration of the variability of wetted width of a furrow with depth. Detailed field measurements of twelve furrow irrigations were used to develop infiltration parameters based on three different assumptions regarding the variation of wetted width with depth. These infiltration parameters were used as input into a mathematical model of furrow irrigation, SRFR. Comparison of measured advance times, water surface elevations and volume of water infiltrated with these values computed by SRFR indicates that SRFR gives consistent results based on the input parameters.
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Esfandiari, Baiat Mansour, of Western Sydney Hawkesbury University, of Science Technology and Agriculture Faculty, and School of Agriculture and Rural Development. "Evaluation of furrow irrigation models for south-east Australia." THESIS_FSTA_ARD_EsfandiariBaiat_M.xml, 1997. http://handle.uws.edu.au:8081/1959.7/739.

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The overall objective of this study was to evaluate the performance of selected furrow irrigation models for field conditions in south-east Australia. The other important aspects which were examined during this study include: developing a methodology for estimating of infiltrating characteristics, assessing the applicability of the Manning and other similar equations for flows in furrow irrigation, investigating the variation of shape factor during irrigation developing methodology for estimation of recession time and exploring the sensitivity of the models to the input parameters. Field experiments were conducted at Walla Park in northern N.S.W. and on two selected paddocks at the University Farm, Richmond, in western Sydney,Australia, over a period of three years. The validity of the assumption that the shape factor of advancing water front during furrow irrigation varies between 0.7 and 0.8 was investigated using field data collected from irrigation events monitored in the study. It was found that the average values of the shape factor varied from 0.96 to 1.80 at Walla Park site, from 0.56 to 0.80 at Field Services unit paddock site and from 0.78 to 0.84 at Horticulture Farm paddock site. The value of shape factor was affected by uniformity of furrow cross section along the length, the value and uniformity of furrow slope, furrow length and infiltration characteristics of soil. This means it is difficult to recommend a typical value for the shape factor for a given field situation.The performance of the models for prediction of advance and recession characteristics and runoff were evaluated using different indices of performance. In general, it was found that the Walker-HD and ZI model was the most satisfactory for the field conditions encountered in this study. This finding can provide a basis for initiating work on developing design criteria and management strategies for furrow irrigation in south-east Australia.
Doctor of Philosophy (PhD)
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Thompson, Tassy Ellen. "Furrow: a multi-media journey in improvisation and performance." The Ohio State University, 1998. http://rave.ohiolink.edu/etdc/view?acc_num=osu1318957826.

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Norton, E. R., and J. C. Silvertooth. "Evaluation of a Drip Vs. Furrow Irrigated Cotton Production System." College of Agriculture, University of Arizona (Tucson, AZ), 2001. http://hdl.handle.net/10150/211297.

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A newly installed subsurface drip system was compared to a conventional furrow-irrigated cotton production system in the Marana Valley in 2000. Regular measurements included soil moisture, flower tagging, general plant growth and development measurements, and lint yield. Results indicate that an increase in lint yield of approximately 250 lbs. lint/acre was obtained under the drip irrigation system. Approximately 1/3 less irrigation water was used under the drip irrigation system. Pounds of lint produced per acre-inch of water applied provide the most dramatic results. In the furrow-irrigated system approximately 25 lbs. of lint was produced per inch of water applied while the drip system ranged from 70-80.
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Chernicky, J. P., and K. C. Hamilton. "Application of Herbicides in Cotton Through Gravity Flow Furrow Irrigation." College of Agriculture, University of Arizona (Tucson, AZ), 1986. http://hdl.handle.net/10150/219728.

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The 1985 and 1986 Cotton Reports have the same publication and P-Series numbers.
The objective of this experiment was to evaluate the potential of applying herbicides in the irrigation water during a furrow irrigation as an alternate method of herbicide application in cotton. Further research is needed to study this method of applying herbicides. If a program could be designed for the Arizona cotton grower, it would help reduce production costs. However before this method can be recommended the environmental impact of such a treatment must be investigated to prevent jeopardizing currently labelled herbicides in cotton.
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Su, K. C. "Control of cleavage furrow formation during cytokinesis in human cells." Thesis, University College London (University of London), 2013. http://discovery.ucl.ac.uk/1382591/.

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Cytokinesis is the final stage of the cell cycle. It partitions sister genomes and separates the cytoplasm of nascent daughter cells. Cytokinesis is initiated by the formation of a cleavage furrow whose ingression is powered by an actomyosin network known as the contractile ring. Following furrow ingression, the process of cell separation is completed by a membrane scission reaction. For the accurate inheritance of genetic information, it is crucial that furrow formation is initiated at the cell equator between segregating chromosomes and that this occurs after chromatin has cleared the cleavage plane. In animal cells, the mitotic spindle plays a pivotal role in the formation and placement of the cleavage furrow. The coupling of cytokinesis and chromosome segregation to the mitotic spindle ensures that nuclear and cytoplasmic division are tightly coordinated. The spindle midzone, a structure that is formed at anaphase onset between segregating sister genomes, is thought to play an important instructive role during cleavage furrow formation. How the mitotic spindle controls cytokinetic events at the cell envelope is a key challenge in cell division research. Formation of the cytokinetic furrow in animal cells requires activation of the GTPase RhoA by the conserved guanine nucleotide exchange factor Ect2. How Ect2, which is associated with the spindle midzone, controls RhoA activity at the equatorial cell periphery during anaphase is not understood. Using a genetic complementation system, I have been able to replace the endogenous Ect2 protein with a fluorescently-tagged transgene to study its dynamic localization during cytokinesis. Using live-cell time-lapse microscopy, I found that Ect2 concentrates not only at the spindle midzone but also accumulates at equatorial plasma membrane during cytokinesis. The association of Ect2 with the plasma membrane in vivo involves a pleckstrin homology domain and a polybasic cluster that bind to phosphoinositide lipids in vitro. I further demonstrated that both guanine nucleotide exchange activity and the membrane targeting domains of Ect2 are essential for RhoA activation, contractile ring formation and cleavage furrow ingression in human cells. Membrane localization of Ect2 is spatially confined to the equator by centralspindlin, Ect2’s spindle midzone anchor complex, and is also temporally coordinated with chromosome segregation through the activation state of Cdk1. My results suggest that targeting of Ect2 to the equatorial membrane may represent a key step in the delivery of the cytokinetic signal to the cortex.
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Xie, Shicong Ph D. Massachusetts Institute of Technology. "Coordination of cellular force-generation during Drosophila ventral furrow formation." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/103272.

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Thesis: Ph. D., Massachusetts Institute of Technology, Computational and Systems Biology Program, 2016.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 107-115).
Spatiotemporally coordinated cell behavior is observed during morphogenesis, in both embryonic development as well as tissue regeneration. An open question is how individual cells collectively generate force to achieve the correct tissue architecture. This thesis examines how the apical forces generated by Drosophila ventral furrow cells undergoing collective apical constriction are coordinated to fold the tissue. In Chapter 2, I investigate how discrete actomyosin contraction events are coordinated in time and between neighboring cells to yield tissue contraction and folding. I developed a computational pipeline to identify and classify contraction events from live images of ventral furrow formation. Using this framework, I found heterogeneity in contraction events, both in terms of contraction intensity as well as apical area behavior. I found that apical constricting cells transition in contractile behavior over time, from undergoing reversible contractions into a ratcheted state where contractions are irreversible. High expression of the transcription factor Twist is required for the transition into this irreversible, ratcheted state, which is associated with more neighboring contractions as well as cooperative interactions between neighbors. In Chapter 3, I examined how contractility is buffered against heterogeneity in cell apical area. I found that Cta-signaling is required to robustly maintain apical Factin cortex that can support contracting over larger apical distances. Without this buffering, apically larger cells progressively lose apical F-actin and exhibit delayed initiation of actomyosin contractions, leading to a lack of coordinated constriction.
by Shicong Xie.
Ph. D.
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Books on the topic "Furrow"

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Escrivá de Balaguer, José María. Furrow. Princeton, N.J: Scepter, 2002.

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Escrivá, de Balaguer José María. Furrow. London: Scepter, 1987.

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The lone furrow. New York: D. Appleton, 1995.

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The straight furrow. Dingle, Co. Kerry, Ireland: Brandon, 1996.

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Dickinson, Margaret. Plough the furrow. London: Pan Books, 2001.

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Plowing my own furrow. Syracuse, N.Y: Syracuse University Press, 1993.

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Plowing my own furrow. New York: Norton, 1985.

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Footsteps in the furrow. Ipswich, England: Old Pond, 2009.

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The horse in the furrow. London: Faber and Faber, 1986.

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Escrivá de Balaguer, José María. The way: Furrow ; The forge. New York: Scepter Publishers, 2004.

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Book chapters on the topic "Furrow"

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Hinrichsen, Klaus. "Nasolacrimal Furrow." In Advances in Anatomy Embryology and Cell Biology, 52–56. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-70754-4_8.

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De Hon, Rene. "Ring Furrow." In Encyclopedia of Planetary Landforms, 1–4. New York, NY: Springer New York, 2014. http://dx.doi.org/10.1007/978-1-4614-9213-9_316-1.

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De Hon, Rene. "Ring Furrow." In Encyclopedia of Planetary Landforms, 1794–96. New York, NY: Springer New York, 2015. http://dx.doi.org/10.1007/978-1-4614-3134-3_316.

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Hangay, George, Severiano F. Gayubo, Marjorie A. Hoy, Marta Goula, Allen Sanborn, Wendell L. Morrill, Gerd GÄde, et al. "Anal Furrow." In Encyclopedia of Entomology, 154. Dordrecht: Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-6359-6_10207.

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Hangay, George, Susan V. Gruner, F. W. Howard, John L. Capinera, Eugene J. Gerberg, Susan E. Halbert, John B. Heppner, et al. "Median Furrow." In Encyclopedia of Entomology, 2317. Dordrecht: Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-6359-6_1770.

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Coleman, Michael. "Furrow Degeneration, Senile." In Encyclopedia of Ophthalmology, 1–2. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-35951-4_859-1.

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Patterson, G. W. "Furrow (Icy Moon)." In Encyclopedia of Planetary Landforms, 1–3. New York, NY: Springer New York, 2014. http://dx.doi.org/10.1007/978-1-4614-9213-9_170-1.

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Patterson, G. Wesley. "Furrow (Icy Moon)." In Encyclopedia of Planetary Landforms, 832–34. New York, NY: Springer New York, 2015. http://dx.doi.org/10.1007/978-1-4614-3134-3_170.

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Coleman, Michael. "Furrow Degeneration, Senile." In Encyclopedia of Ophthalmology, 800. Berlin, Heidelberg: Springer Berlin Heidelberg, 2018. http://dx.doi.org/10.1007/978-3-540-69000-9_859.

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Kincaid, D. C. "Intake Rate: Border and Furrow." In SSSA Book Series, 871–87. Madison, WI, USA: Soil Science Society of America, American Society of Agronomy, 2018. http://dx.doi.org/10.2136/sssabookser5.1.2ed.c34.

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Conference papers on the topic "Furrow"

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David L. Bjorneberg, Dale T. Westermann, and J. Kristian Aase. "Phosphorus Transport During Furrow Irrigation." In 2001 Sacramento, CA July 29-August 1,2001. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2001. http://dx.doi.org/10.13031/2013.6260.

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Kaneta, M., H. Nishikawa, S. Okabayashi, J. Wang, and P. Yang. "Non-Newtonian Response of EHL Film Temperature." In ASME/STLE 2007 International Joint Tribology Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/ijtc2007-44219.

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The temperature and thickness of oil film in point EHL contacts between a rough stationary surface and a smooth moving surface are measured with infrared and optical interferometry techniques. The ridges and furrows of the roughness are aligned with the parallel direction to that of lubricant entrainment. The experimental results are compared with numerical simulations based on Eyring and Newtonian fluid flow models. Under certain conditions, the average film temperature across the oil film near the central contact region is higher at the furrow position than at the ridge position. It is revealed that this phenomenon is caused by shear thinning behavior of lubricant.
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Joel P. Schneekloth, Norman L. Klocke, Don R. Davison, and Jose O. Payero. "Furrow Irrigation Management with Limited Water." In 2004, Ottawa, Canada August 1 - 4, 2004. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2004. http://dx.doi.org/10.13031/2013.16198.

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Clemmens, A. J., D. T. Westermann, T. S. Strelkoff, and D. L. Bjorneberg. "Phosphorus Loading in Furrow Irrigation Tailwater." In World Water and Environmental Resources Congress 2004. Reston, VA: American Society of Civil Engineers, 2004. http://dx.doi.org/10.1061/40737(2004)24.

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Bautista, E., A. W. Warrick, and J. L. Schlegel. "Wetted-Perimeter-Dependent Furrow Infiltration and Its Implication for the Hydraulic Analysis of Furrow Irrigation Systems." In World Environmental and Water Resources Congress 2014. Reston, VA: American Society of Civil Engineers, 2014. http://dx.doi.org/10.1061/9780784413548.171.

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Cerlinca, Delia F., and Emanuel N. Diaconescu. "Experimental Investigations Upon Fatigue Life of Circular Contacts With Transversal Furrow." In World Tribology Congress III. ASMEDC, 2005. http://dx.doi.org/10.1115/wtc2005-63662.

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Rolling contact fatigue depends essentially on both surface and subsurface populations of defects. First, this paper describes experimental results obtained in rolling contact fatigue tests in the presence of a furrow oriented transversally to the race-way. Then an attempt to predict theoretically the effect of geometric parameters of the furrow upon contact fatigue life is described.
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Kaur, Manpreet, and Cheol-Hong Min. "Automatic Crop Furrow Detection for Precision Agriculture." In 2018 IEEE 61st International Midwest Symposium on Circuits and Systems (MWSCAS). IEEE, 2018. http://dx.doi.org/10.1109/mwscas.2018.8623906.

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Damodhara R Mailapalli, Wesley W Wallender, William R Horwath, and Martin Burger. "Modeling Water Temperature in Furrow Irrigation Systems." In 2009 Reno, Nevada, June 21 - June 24, 2009. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2009. http://dx.doi.org/10.13031/2013.26918.

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John H. Hancock, John B. Wilkerson, F. Henry Moody, III, William E. Hart, and Melvin A. Newman. "Seed-Specific Placement of In-Furrow Chemicals." In 2003, Las Vegas, NV July 27-30, 2003. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2003. http://dx.doi.org/10.13031/2013.13751.

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Babu, T., A. Ravinthiran, S. Rohit Krishnan, P. Muthu Ananda, and V. Pavitharan. "A modern low-cost furrow cutting machine." In PROCEEDINGS OF INTERNATIONAL CONFERENCE ON RECENT TRENDS IN MECHANICAL AND MATERIALS ENGINEERING: ICRTMME 2019. AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0025075.

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Reports on the topic "Furrow"

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Wise, Kiersten, Tom Allen, Trey Price, and Daren Mueller. Corn row spacing impacts rates of in-furrow fungicide applications. United States: Crop Protection Netework, April 2021. http://dx.doi.org/10.31274/cpn-20210423-1.

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M., Devkota, Gupta R.K., Martius C., Lamers J.P.A., Sayre K.D., and Vlek P.L.G. Soil salinity management on raised beds with different furrow irrigation modes in salt-affected lands. Center for International Forestry Research (CIFOR), 2015. http://dx.doi.org/10.17528/cifor/005519.

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Cui, Zheng. Blocking Internalization of Phosphatidylethanolamine at Cleavage Furrow of Mitosis as a Novel Mechanism of Anti-Breast-Cancer Strategy. Fort Belvoir, VA: Defense Technical Information Center, June 2003. http://dx.doi.org/10.21236/ada417523.

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Fader, G. B. J. Submersible observations of iceberg furrows and Sand Ridges, Grand Banks of Newfoundland. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1989. http://dx.doi.org/10.4095/126984.

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Slowey, Niall, and William Bryant. Study of Deep-Sea Furrows: Physical Characteristics, Mechanisms of Formation and Associated Environmental Processes. Fort Belvoir, VA: Defense Technical Information Center, September 2001. http://dx.doi.org/10.21236/ada625836.

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Hwa, R. C. Geometrical scaling, furry branching and minijets. Office of Scientific and Technical Information (OSTI), January 1988. http://dx.doi.org/10.2172/6039439.

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Veillette, J. J., and S. J. Paradis. Iceberg furrows as paleowind indicators and icebergs as erosion and sedimentation agents in Glacial Lake Ojibway, Abitibi, Québec. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1996. http://dx.doi.org/10.4095/205754.

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Satinsky, Emily, and Denise Green. The Furry Fandom: constructing a costumed society for identity exploration. Ames: Iowa State University, Digital Repository, November 2015. http://dx.doi.org/10.31274/itaa_proceedings-180814-158.

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