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Reliability of Pheromone Trap Catches and Maize Plant Damage as Criteria for Timing Fall Armyworm Control Interventions in Humid Forest Agroecology of Central Africa
Control of fall armyworm (FAW) Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) since its invasion of Africa still depends on pesticides. Early detection of adults is considered the key to the success of larvae control in the crop field. However, FAW control thresholds based on current monitoring techniques are not well established in Africa. We investigated the efficacy of moth capture frequencies and FAW incidence levels as decision tools for FAW management. Experiments were conducted over two maize cropping seasons during which FAW incidence, severity, and larvae count were recorded during destructive sampling after the application of a homologated insecticide. During the first season, the FAW incidence ranged from 37.5 ± 5.6% in the 25% incidence threshold treatment to 48.1 ± 8.1% in the control. During the second season, the incidence was significantly lower in the 25% incidence threshold treatment (55.8 ± 5.7%) compared with the control (75.7 ± 3.0%). Over the two seasons, no significant difference in FAW damage severity was recorded between the treatments and control. The highest number of larvae per plant (4.0 ± 0.6) was observed in the 10% incidence threshold treatment. Insecticide application did not consistently contribute to reducing FAW incidence and observed plant damage did not translate into yield loss. FAW control needs further investigation to establish a threshold above which damage translates into yield loss, thus necessitating control intervention
Concert recording 2016-04-03
[Track 01]. Fanfare pour précéder \u27La Péri\u27 / Paul Dukas -- [Track 02]. French dances revisted. I ; [Track 03]. II ; [Track 04]. III ; [Track 05]. IV ; [Track 06]. V ; [Track 07]. VI / Adam Gorb -- [Track 08]. Danses sacrée et profane / Claude Debussy -- [Track 09]. Dance mix / Rob Smith
An 18.9-minute Blue Large-Amplitude Pulsator Crossing the 'Hertzsprung Gap' of Hot Subdwarfs
Blue large-amplitude pulsators (BLAPs) represent a new and rare class of hot
pulsating stars with unusually large amplitudes and short periods. Up to now,
only 24 confirmed BLAPs have been identified from more than one billion
monitored stars, including a group with pulsation period longer than
min (classical BLAPs, hereafter) and the other group with pulsation period
below min. The evolutionary path that could give rise to such kinds of
stellar configurations is unclear. Here we report on a comprehensive study of
the peculiar BLAP discovered by the Tsinghua University - Ma Huateng Telescopes
for Survey (TMTS), TMTS J035143.63+584504.2 (TMTS-BLAP-1). This new BLAP has an
18.9 min pulsation period and is similar to the BLAPs with a low surface
gravity and an extended helium-enriched envelope, suggesting that it is a
low-gravity BLAP at the shortest-period end. In particular, the long-term
monitoring data reveal that this pulsating star has an unusually large rate of
period change, P_dot/P=2.2e-6/yr. Such a significant and positive value
challenges its origins from both helium-core pre-white-dwarfs and core
helium-burning subdwarfs, but is consistent with that derived from shell
helium-burning subdwarfs. The particular pulsation period and unusual rate of
period change indicate that TMTS-BLAP-1 is at a short-lived (~10^6 yr) phase of
shell-helium ignition before the stable shell-helium burning; in other words,
TMTS-BLAP-1 is going through a "Hertzsprung gap" of hot subdwarfs.Comment: 26 pages, 12 figures, 4 tables, published on Nature Astronomy, URL:
https://www.nature.com/articles/s41550-022-01783-
Definition and Characteristics of Behavioral Medicine, and Main Tasks and Goals of the International Society of Behavioral Medicine—an International Delphi Study
© 2020, The Author(s). Background: In the past decades, behavioral medicine has attained global recognition. Due to its global reach, a critical need has emerged to consider whether the original definition of behavioral medicine is still valid, comprehensive, and inclusive, and to reconsider the main tasks and goals of the International Society of Behavioral Medicine (ISBM), as the umbrella organization in the field. The purpose of the present study was to (i) update the definition and scope of behavioral medicine and its defining characteristics; and (ii) develop a proposal on ISBM’s main tasks and goals. Method: Our study used the Delphi method. A core group prepared a discussion paper. An international Delphi panel rated questions and provided comments. The panel intended to reach an a priori defined level of consensus (i.e., 70%). Results: The international panel reached consensus on an updated definition and scope of behavioral medicine as a field of research and practice that builds on collaboration among multiple disciplines. These disciplines are concerned with development and application of behavioral and biomedical evidence across the disease continuum in clinical and public health domains. Consensus was reached on a proposal for ISBM’s main tasks and goals focused on supporting communication and collaboration across disciplines and participating organizations; stimulating research, education, and practice; and supporting individuals and organizations in the field. Conclusion: The consensus on definition and scope of behavioral medicine and ISBM’s tasks and goals provides a foundational step toward achieving these goals
A spectral data release for 104 Type II Supernovae from the Tsinghua Supernova Group
We present 206 unpublished optical spectra of 104 type II supernovae obtained
by the Xinglong 2.16m telescope and Lijiang 2.4m telescope during the period
from 2011 to 2018, spanning the phases from about 1 to 200 days after the SN
explosion. The spectral line identifications, evolution of line velocities and
pseudo equivalent widths, as well as correlations between some important
spectral parameters are presented. Our sample displays a large range in
expansion velocities. For instance, the Fe~{\sc ii} velocities measured
from spectra at days after the explosion vary from ${\rm 2000\ km\
s^{-1}}{\rm 5500\ km\ s^{-1}}{\rm 3872 \pm
949\ km\ s^{-1}}\beta\alpha\beta\alpha$
(a/e). In our sample, two objects show possibly flash-ionized features at early
phases. Besides, we noticed that multiple high-velocity components may exist on
the blue side of hydrogen lines of SN 2013ab, possibly suggesting that these
features arise from complex line forming region. All our spectra can be found
in WISeREP and Zenodo
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