scholarly journals Factors Responsible for the Difference in Densities between Southwestern and Northern Japanese Populations of the Green Rice Leafhopper, Nephotettix cincticeps(UHLER)(Hemiptera:Deltocephalidae), in Their Later Generations : I. Effects of the Heading Time of Rice Varieties on the Oviposition and Propagation of the Second Generation

1993 ◽  
Vol 28 (2) ◽  
pp. 207-216 ◽  
Author(s):  
Hirowo SATOMI
2018 ◽  
Vol 8 (12) ◽  
pp. 333-336 ◽  
Author(s):  
James M. Stone ◽  
Simon Roux ◽  
David Taylor ◽  
Paul D. Morrison

Background: The development of long-acting injectable formulations (LAIs) of second-generation antipsychotic drugs (SGAs) has been suggested as having advantage over first-generation antipsychotic (FGA) LAIs. In this study, we investigated the hypothesis that there was a longer time to relapse in patients with schizophrenia started on SGA LAI versus FGA LAI. Methods: Patients with a diagnosis of schizophrenia or schizoaffective disorder who were started on an SGA LAI while on an inpatient ward were identified through searching of the anonymised historical medical records at the South London and Maudsley NHS Foundation Trust. Patients starting FGA LAIs matched for diagnosis, age and date of hospital admission were identified. Time to readmission, discontinuation of LAI or death were identified. Kaplan–Meier plots were generated for each group, and the difference between groups analysed using log-rank methods. Results: There were 157 patients identified in each group. There was no difference in time to readmission, medication discontinuation or death in patients on SGA LAI versus FGA LAI. Conclusions: We found no evidence of advantage in terms of maintaining response in SGA LAI versus FGA LAI. Prescriber choice should be guided by other factors such as side-effect profile, patient acceptability and price.


2019 ◽  
Vol 56 (6) ◽  
pp. 851-887 ◽  
Author(s):  
Bianca E. Bersani ◽  
Adam W. Pittman

Objective:This study reassesses the generational disparity in immigrant offending. Patterns and predictors of offending are compared using traditional peer-based models and an alternative within-family (parent–child dyad) model.Method:The National Longitudinal Survey of Youth (1979; NLSY79) and NLSY-Child and Young Adult (NLSY_CYA) data are merged to create an intergenerational data set to compare generational disparities in immigrant offending across peers and within families. Differences in self-reported offending (prevalence and variety) by immigrant generation are assessed using a combination of descriptive analyses (χ2and analysis of variance) and regression models.Results:While NLSY_CYA children generally are at a greater risk of offending compared with the NLSY79 mothers, the difference in offending is greatest between first-generation mom and second-generation child dyads. Disparities in offending are driven in large part by exceedingly low levels of offending among first-generation immigrants.Conclusion:Although the factors driving an increase in offending between parent–child generations are not unique to immigrants, they are amplified in immigrant families. Whereas the second generation is remarkably similar to their U.S.-born counterparts in terms of their involvement in crime, suggesting a high degree of swift integration, the greater involvement in crime among the children of immigrants compared to their foreign-born mothers suggests a decline in well-being across successive generations.


1983 ◽  
Vol 115 (1) ◽  
pp. 75-79 ◽  
Author(s):  
P. S. Curry ◽  
R. P. Knowles ◽  
J. Waddington

AbstractPopulations of the bromegrass seed midge, Contarinia bromicola Marikovskiy and Agafonova, were sampled in bromegrass plots in Saskatchewan in the years 1974 to 1980 inclusive. Two peaks of midge adult numbers were observed, the first at bromegrass heading time in early June and the second about 20–25 days later at bromegrass flowering. Parasitism by a species of Tetrastichus (Eulophidae) varied from 30% to 75%. Carbofuran (0.14 kg A.I./ha) or dimethoate (0.56 kg A.I./ha) spray, applied just before emergence of adult midges at flowering time, significantly reduced numbers of midges and parasites resident in the plants in both of two field tests; a second generation of midge larvae, following invasion by midge adults, was significantly reduced by residual treatment effect in only 1 of the 2 years.


1991 ◽  
Vol 41 (1) ◽  
pp. 135-152 ◽  
Author(s):  
Yutaka OKUMOTO ◽  
Takatoshi TANISAKA ◽  
Hirotada YAMAGATA

2018 ◽  
pp. 285-293
Author(s):  
LUDMILA GULBA

"The article presents a comparative analysis of the titles of poetry books, literary cycles and poems by V.Brusov and A.Blok; it also reveals the linguistic parameters and expression of the titles, the cultural background, the way to reflect the contents of the collection, literary cycles or a poem; through the difference of approaches to entitling their works the difference of the two poetic systems (“rise of symbolism” and “second generation” symbolism) is analyzed."


2019 ◽  
Vol 161 (A3) ◽  

The International Maritime Organization is currently establishing second generation intact stability criteria, the dead ship stability is considered one important criterion, so the development of its direct stability assessment regulation has become a topic undergoing close review. In this paper a peak-over-threshold (POT) method is proposed to evaluate the dead ship stability, which focuses on the statistical extrapolation that exceed the threshold, also the traditional Monte Carlo simulation is carried out to approve the method. On the basis of verification calculation of the sample ship CEHIPAR2792, the capsizing probability of a certain warship is also conducted. Moreover, the influence of initial stability height GM and effective wave slope coefficient on the capsizing probability is analysed. The results and the possible reason for the difference are examined. This study is expected to provide technical support for the second-generation stability criteria and establish the capsizing probability of damaged dead ship stability.


2018 ◽  
Vol 43 (1) ◽  
pp. 81-88
Author(s):  
MA Bakar ◽  
MMH Khan

The study was conducted to know the relative abundance of insect pests and their predators on 5 boro rice varieties namely Arize tez, Teea, Sakti, Sathi and BRRI Dhan 28. In Arize Tez variety, short horned grasshopper revealed the highest percent relative abundance (87.25%) at tillering stage and green rice leafhopper was only at panical initiation stage. Among insect predators, wasp showed the highest percent relative abundance (33.33%) both at tillering and panical initiation stages. In Teea variety, the highest percent relative abundance of short horned grasshopper was recorded at tillering (80.21%) and panicle initiation (86.03%) stages while spider and lady bird beetle had 21.05% at tillering stage, wasp (21.05% and 40.00%), damselfly (21.05% and 40.00%) at tillering and panical initiation stages, respectively. In Sakti variety, short horned grasshopper had the highest percent relative abundance (72.54% and 69.05%) at tillering and panicle initiation stages while dragonfly had 30.77% at tillering, wasp had 30.77% and 66.66% at tillering and panicle initiation stages. In Shathi variety, the highest percent relative abundance of short horned grasshopper was recorded at tillering (59.46%) and panicle initiation (52.27%) stages while wasp (41.67%) at panical initiation stage. In variety BRRI dhan 28, the highest percent relative abundance of insect pests was recorded in short horned grasshopper (76.73% and 86.05%) both at tillering and panicle initiation stages while in insect predators, wasp had 40% at tillering and 50% at panicle initiation stages but dragonfly had 50% only at panicle initiation stage.Bangladesh J. Agril. Res. 43(1): 81-88, March 2018


2020 ◽  
Vol 6 ◽  
pp. 136-145
Author(s):  
Masayuki Murai ◽  
Birendra Bahadur Rana ◽  
Itsuro Takamure ◽  
Haruki Nakazawa ◽  
Mukunda Bhattarai

Various genes controlling heading time have been reported in rice. An isogenic-line pair of late and early lines “L” and “E” were developed from progenies of the F1 of Suweon 258 × an isogenic line of IR36 carrying Ur1 gene. The lateness gene for photosensitivity that causes the difference between L and E was tentatively designated as “Ex(t)”, although it’s chromosomal location is unknown. The present study was conducted to examine the effects of Ex(t) on yield and related traits in a paddy field in two years. Chemical fertilizers containing N, P2O5 and K2O were applied at the nitrogen levels of 4.00, 9.00 and 18.00 g/m2 in total, being denoted by "N4", "N9" and "N18", respectively, in 2014. L was later in 80%-heading by 18 or 19 days than E. Regarding total brown rice yield (g/m2), L and E were 635 and 577, 606 and 548, and 590 and 501, respectively, at N18, N9 and N4, indicating that Ex(t) increased this trait by 10 to 18%. Ex(t) increased yield of brown rice with thickness above 1.5mm (g/m2), by 9 to 15%. Ex(t) increased spikelet number per panicle by 16 to 22% and spikelet number per m2 by 11 to 18%. Thousand-grain weight (g) was 2 to 4% lower in L than in E. L was not significantly different from E in ripened-grain percentage. Hence, Ex(t) increased yield by increasing spikelet number per panicle. It is suggested that Ex(t) could be utilized to develop high yielding varieties for warmer districts of the temperate zone.


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