Institution
University of Greenwich
Education•London, United Kingdom•
About: University of Greenwich is a education organization based out in London, United Kingdom. It is known for research contribution in the topics: Population & Context (language use). The organization has 3749 authors who have published 9958 publications receiving 234340 citations.
Papers published on a yearly basis
Papers
More filters
••
TL;DR: In this paper, the effects of storage temperature (10, 20, 30, 40 °C), water activity (0.13, 0.30; 0.51), and oxygen level (0, 2.5, 10, 21%) on the degradation of carotenoids and formation of volatile compounds during storage of dried sweet potato chips were evaluated.
87 citations
••
TL;DR: Results did not suggest the association of a hypervirulent form of the virus with the current CBSD epidemic in Uganda and identified the severe and milder isolates, however, has further implications for disease management and quarantine requirements.
Abstract: The genetic and symptom diversity of six virus isolates causing cassava brown streak disease (CBSD) in the endemic (Kenya, Mozambique, and Tanzania) and the recently affected epidemic areas (Uganda) of eastern Africa was studied. Five cassava varieties; Albert, Colombian, Ebwanateraka, TMS60444 (all susceptible) and Kiroba (tolerant) were graft inoculated with each isolate. Based on a number of parameters including the severity of leaf and root symptoms, and the extent of virus transmission by grafting, the viruses were classified as either severe or relatively mild. These results were further confirmed by the mechanical inoculation of 13 herbaceous hosts in which the virulent isolates caused plant death in Nicotiana clevelandii and N. benthamiana whereas the milder isolates did not. Phylogenetic analysis of complete coat protein gene sequences of these isolates together with sequences obtained from 14 other field-collected samples from Kenya and Zanzibar, and reference sequences grouped them into two distinct clusters, representing the two species of cassava brown streak viruses. Put together, these results did not suggest the association of a hypervirulent form of the virus with the current CBSD epidemic in Uganda. Identification of the severe and milder isolates, however, has further implications for disease management and quarantine requirements.
87 citations
••
TL;DR: Crushed concrete fines removed Cu2+ and Zn2+ arose from surface precipitation reactions, whereas, the principal mechanism of uptake of Pb2+ was found to be by diffusion into the cement matrix, and metal ion removal efficiency is compared with those of other low cost sorbents.
87 citations
••
TL;DR: This review aims to provide overview of commonly employed solid form screening techniques in drug development with an emphasis on cocrystal screening methodologies and the latest developments in understanding and the use of cocrestal phase diagrams in both screening and solution based scale-up methods.
87 citations
••
TL;DR: Effective control accompanied each subsequent late upsurge and early plague stage and all declined rapidly, and the control strategy aims to reduce populations to prevent plagues and damage to crops and grazing.
Abstract: Solitarious desert locusts, Schistocerca gregaria (Forskal) (Orthoptera: Acrididae), inhabit the central, arid, and semi-arid parts of the species' invasion area in Africa, the Middle East, and South-West Asia. Their annual migration circuit takes them downwind to breed sequentially where winter, spring, and summer rains fall. In many years, sparse and erratic seasonal rains support phase change and local outbreaks at only a few sites. Less frequently, seasonal rains are widespread, frequent, heavy, and long lasting, and many contemporaneous outbreaks occur. When such seasonal rains fall sequentially, populations develop into an upsurge and eventually into a plague unless checked by drought, migra- tion to hostile habitats, or effective control. Increases in the proportion of gregarious populations as the plague develops alter the effectiveness of control. As an upsurge starts, only a minority of locusts is aggregated into treatable targets and spraying them leaves sufficient unsprayed individuals to con- tinue the upsurge. Spraying all individuals scattered within an entire infested zone is arguably both financially and environmentally unacceptable. More of the population gregarizes and forms sprayable targets after each successive season of good rains and successful breeding. Eventually, unless the rains fail, the entire upsurge population becomes aggregated at high densities so that the infested area diminishes and a plague begins. These populations must continue to increase numerically and spread geographically to achieve peak plague levels, a stage last reached in the 1950s. Effective control, aided by poor rains, accompanied each subsequent late upsurge and early plague stage and all declined rapidly. The control strategy aims to reduce populations to prevent plagues and damage to crops and grazing. Differing opinions on the optimum stage to interrupt pre-plague breeding sequences are reviewed.
87 citations
Authors
Showing all 3822 results
Name | H-index | Papers | Citations |
---|---|---|---|
Rolf Loeber | 128 | 470 | 58477 |
Robert West | 112 | 1061 | 53904 |
John C. Mitchell | 104 | 676 | 36467 |
Jian Chen | 96 | 1718 | 52917 |
Xiaojun Wu | 91 | 1088 | 31687 |
Lucilla Poston | 91 | 565 | 32452 |
Frank J. Kelly | 85 | 440 | 30005 |
Brendon Stubbs | 81 | 754 | 28180 |
Zongjin Li | 80 | 630 | 22103 |
Paul T. Seed | 79 | 472 | 21311 |
Suzanne G. Leveille | 74 | 234 | 19514 |
Ruth Duncan | 73 | 221 | 24991 |
Paul McCrone | 68 | 453 | 16632 |
Jonathan Hadgraft | 66 | 349 | 15661 |
Marc De Hert | 65 | 354 | 17566 |