5,549 research outputs found
Coffee berry disease in Kenya
No full textData are presented on research in Kenya in 1964 - 1969 on anatomical, mycological, epidemiological, chemical control and cultural aspects of coffee berry disease, Colletotrichum coffeanum Noack, of Coffea arabica L. The pathogen causes flower and berry losses and was found in branches where it occupied clearly defined areas of the cortex just before or after formation of the first phellogen. Saprophytic Colletotrichum spp. inhabit bark areas with more periderms in the cortex. No relationship could be found in Kenya between Glomerella cingulata (Stonem.) Sp. & Schr., the perfect stage of most of the saprophytic Colletotrichum bark components, and C. coffeanum . The seasonal fluctuations in pathogenicity in the bark population of C. coffeanum could be assessed and compared with the total sporulating capacity of the bark population of all Colletotrichum spp. Formerly the level of this total sporulating capacity, or 'inoculum potential' as it was then called, was used as an indication when pre-rain copper sprays had to be applied and how effectively the fungicide had reduced the bark inoculum. Based on these data the recommendations for chemical control were changed from pre-rain fungicide applications, to a spraying regime well into the rainy period, the accent being on protection of the berries rather than on a reduction of the bark inoculum. The fungicide Ortho Difolatan proved to be more effective than copper based compounds. Cultural practices, like the application of high levels of fertilizers, manure and mulch and rigid pruning practices, had no effect on the level of C. coffeanum in branches. Copper containing fungicides pushed the Colletotrichum balance in favour of C. coffeanum . Berries from non-copper sprayed coffee fields were less susceptible to standard conidial suspensions of C. coffeanum than berries from copper sprayed trees. A similar effect of fungicides should be considered in South and Central American coffee growing countries, where the application of fungicides has increased tremendously since the occurrence of Hemileia vastatrix Berk. et Br. in Brazil
Topological events on wave dislocation lines: birth and death of small loops, and reconnection
No full textIn three-dimensional space, a wave dislocation, that is, a quantized (optical) vortex or phase singularity, is a line zero of a complex scalar wavefunction. As a 'time' parameter varies, the topology of the vortex can change by encounter with a line of vanishing vorticity (curl of the current associated with the wavefunction). An isolated critical point of the field intensity, sliding along the zero-vorticity line like a bead on a wire, meets the vortex as it encounters the line, and so participates in the singular event. Local expansio n and gauge and coordinates transformations show that the vortex topology can change generically by the appearance or disappearance of a loop, or by the reconnection of branches of a pair of hyperbolas
No. 26 Lincoln's Inn Fields
No full textMedium: pencilSigned and dated."No. 26 Lincoln's Inn Fields" [0000.0930.000.000], Berry, John LionelArtist and Role: Berry, John Lionel,Extent: shee
Surface forcing of the North Atlantic: accuracy and variability
No full textA new methodology to estimate the turbulent air – sea heat and moisture fluxes andtheir uncertainty is developed and assessed using Voluntary Observing Ship (VOS)observations. Whilst important drivers of the global oceanic and atmospheric circulationthese fluxes remain poorly quantified, both in terms of mean value and uncertainty. Thenew methodology addresses both of these issues and is extensible to other data sources.The individual observations are first bias and height adjusted to remove systematicerrors and the impact of changing observing heights. They are then characterised interms of random errors using a semi-variogram analysis and a range of variogrammodels. The data quality and sampling are then taken into account using optimalinterpolation (OI) to grid the observations, producing daily mean fields and uncertaintyestimates. These are then used to estimate the fluxes and flux uncertainty on both dailyand monthly time scales.Comparisons of the mean fields and fluxes to the original input data and toindependent buoy observations show the fields not to be significantly biased. Theadjustments applied before gridding and flux calculation are also shown to improve theagreement with the buoy observations. The uncertainty estimates are assessed using aseries of cross validation experiments and 3-way error analyses to make alternativeestimates of the uncertainty. These alternative estimates are shown to be of the sameorder of magnitude as the OI uncertainty estimates and generally to be within 10 – 20%of the OI estimate. Whilst all three estimates are similar there are some systematicdifferences. The OI uncertainty estimates tend to be lower (higher) than the alternativeestimates in high (low) variability regions.The representation of the variability in the new dataset is examined and shown to beimproved compared to previous VOS based datasets. The adjustments are shown tohave little impact on the temporal trends in temperature and humidity whilst reducingthe wind speed and sensible and latent heat flux trends. These reduced trends arethought to be more realistic. The wind speed trend after adjustment is more similar tothe trends reported in previous studies using reanalysis model output. However, thereare still some differences in the trends, with the VOS based estimates larger, leading touncertainty in trend estimates. The trends in the adjusted latent and sensible heat fluxestimates are similar to those seen in other flux datasets but when compared to changesin the upper ocean heat content may still be too large. This may be due to theoverestimate of the wind speed trend. Overall the uncertainty in the wind speed trendgives the largest uncertainty in the flux trends.Finally, the advances made in developing the new methodology are summarised andthe potential uses of the new dataset identified. Future work and improvements are thensuggested
House in Lincoln's Inn Fields WC.
No full textMedium: pencilSigned on verso. Embossed "RA"."House in Lincoln's Inn Fields WC." [0000.0755.000.000], Berry, John LionelArtist and Role: Berry, John Lionel,Extent: shee
St. Giles in the Fields, WC
No full textMedium: pencilNot signed. Not dated."St. Giles in the Fields, WC" [0000.0934.000.000], Berry, John LionelArtist and Role: Berry, John Lionel,Extent: shee
Berry Fields and The Stewart Family / Side 1
No full text(Content List): The Berryfields o\u27 Blair / Belle Stewart; Conversation about foregoing / Belle Stewart; Spoken Intro to Frank and Ruby Bride in Baniff / Belle Stewart; Frank and Ruby Bride in Baniff / Belle Stewart; Hatton Woods / Cathie Stewart; Queen among the Heather / Belle Stewart; Overgate / Belle Stewart and male chorus; The Homes of Donegal / Belle Stewart; Butcher o Crieff / Belle Stewart; The Twa Brothers / Sheila Stewart; Boys of Bluehill / Belle Stewart; The Ten Penny March / Belle Stewart; Pipe March / Belle Stewart; The Reel o Tullcoh / Alec Stewart; Leaving Ardtornish / Belle Stewart; The Stewarts o Berrybank / Belle Stewart; The Bonnie House o Airlie / Belle Stewart; Betsy Bell / Belle Stewart; I\u27m a saft country chiel / Belle Stewart; The Banks o the Red Roses / Belle Stewart; O I wish I had Never Seen your Face / Belle Stewart; O\u27 Kathleen Mavoureen / Belle Stewart; Noo My Fathers Name is Alec / Sheila Stewart; Conversation; Bogie Bonny Belle / Sheila Stewart; The Orange and the Blue / Sheila Stewart; Over That Hill Lives a Lassie / Belle Stewart; If I was a Blackbird / Belle Stewar
Doorway No.26, Lincoln's Inn Fields, London WC
No full textMedium: pencilNot signed. Not dated."Doorway No.26, Lincoln's Inn Fields, London WC" [0000.0757.000.000], Berry, John LionelArtist and Role: Berry, John Lionel,Extent: shee
Bertice Berry - 04/06/1999 - (Riall Lecture Series)
No full textBegun in 1988, the E. Pauline Riall Lecture Series brings to the University and community outstanding national lecturers in the field of education. The series was established by the late Miss Riall, long-time principal and teacher of the former Salisbury University's Campus School. A generous bequest was provided by Miss Riall's will to fund this special program.
Dr. Bertice Berry, Author, Sociologist, Comedian – 4/6/1999https://www.youtube.com/watch?v=VjageKPrvY
Wendell Berry, Kentucky\u27s Author
No full textMy poster highlights the life and works of Kentucky native Wendell Berry. Mr. Berry is most noted for his writings which encourage the support of local agriculture. I have done a phone interview with Mr. Berry, quotations from which were incorporated into the poster. Mr. Berry has intertwined his philosophy into both his fictional and non- fictional works, and highlights from these works are presented
- …
