scholarly journals Effect of Temperature on Plant Resistance to Arthropod Pests

2020 ◽  
Vol 49 (3) ◽  
pp. 537-545
Author(s):  
James R Nechols ◽  
Ashley R Hough ◽  
David C Margolies ◽  
John R Ruberson ◽  
Brian P McCornack ◽  
...  
Keyword(s):  
Plant Resistance ◽  
Indirect Effects ◽  
Host Plants ◽  
Structural Characteristics ◽  
Effect Of Temperature ◽  
Future Research ◽  
Experimental Approaches ◽  
Arthropod Pests ◽  
Effects Of Temperature ◽  
Effective Use

Abstract Temperature has a strong influence on the development, survival, and fecundity of herbivorous arthropods, and it plays a key role in regulating the growth and development of their host plants. In addition, temperature affects the production of plant secondary chemicals as well as structural characteristics used for defense against herbivores. Thus, temperature has potentially important implications for host plant resistance. Because temperature directly impacts arthropod pests, both positively and negatively, distinguishing direct effects from indirect effects mediated through host plants poses a challenge for researchers and practitioners. A more comprehensive understanding of how temperature affects plant resistance specifically, and arthropod pests in general, would lead to better predictions of pest populations, and more effective use of plant resistance as a management tactic. Therefore, the goals of this paper are to 1) review and update knowledge about temperature effects on plant resistance, 2) evaluate alternative experimental approaches for separating direct from plant-mediated indirect effects of temperature on pests, including benefits and limitations of each approach, and 3) offer recommendations for future research.

scholarly journals Effects of Climate on Incidence of Campylobacter spp. in Humans and Prevalence in Broiler Flocks in Denmark

2004 ◽  
Vol 70 (12) ◽  
pp. 7474-7480 ◽  
Author(s):  
Mary Evans Patrick ◽  
Lasse Engbo Christiansen ◽  
Michael Wainø ◽  
Steen Ethelberg ◽  
Henrik Madsen ◽  
...  
Keyword(s):  
Relative Humidity ◽  
Linear Models ◽  
Public Health Problem ◽  
Effect Of Temperature ◽  
Maximum Temperature ◽  
Future Research ◽  
Combined Effects ◽  
Average Temperature ◽  
Effects Of Temperature ◽  
Single Predictor

ABSTRACT Campylobacter infections are increasing and pose a serious public health problem in Denmark. Infections in humans and broiler flocks show similar seasonality, suggesting that climate may play a role in infection. We examined the effects of temperature, precipitation, relative humidity, and hours of sunlight on Campylobacter incidence in humans and broiler flocks by using lag dependence functions, locally fitted linear models, and cross validation methods. For humans, the best model included average temperature and sunlight 4 weeks prior to infection; the maximum temperature lagged at 4 weeks was the best single predictor. For broilers, the average and maximum temperatures 3 weeks prior to slaughter gave the best estimate; the average temperature lagged at 3 weeks was the best single predictor. The combined effects of temperature and sunlight or the combined effects of temperature and relative humidity predicted the incidence in humans equally well. For broiler flock incidence these factors explained considerably less. Future research should focus on elements within the broiler environment that may be affected by climate, as well as the interaction of microclimatic factors on and around broiler farms. There is a need to quantify the contribution of broilers as a source of campylobacteriosis in humans and to further examine the effect of temperature on human incidence after this contribution is accounted for. Investigations should be conducted into food consumption and preparation practices and poultry sales that may vary by season.

The effects of temperature cues on charitable donation

2017 ◽  
Vol 34 (1) ◽  
pp. 20-28 ◽  
Author(s):  
Dipankar Rai ◽  
Chien-Wei (Wilson) Lin ◽  
Chun-Ming Yang
Keyword(s):  
Social Contexts ◽  
Added Value ◽  
Effect Of Temperature ◽  
Future Research ◽  
Social Connection ◽  
Warm Temperature ◽  
Charitable Donation ◽  
Content Type ◽  
Charitable Donations ◽  
Effects Of Temperature

Purpose This paper aims to investigate how the perception of physical coldness (vs warmth) influences consumers to make charitable donations. Design/methodology/approach Three experiments were conducted involving charitable donation scenarios. Findings Studies demonstrate that cold (vs warm) temperature cues result in greater intentions to donate to charities. Specifically, cold (vs warmth) cues activate the need for social connection which, in turn, motivate consumers to donate more money to charities. Furthermore, this effect holds even when the actual temperature instead of temperature cues is changed, and participants’ actual donation behavior instead of donation intentions is measured, thereby, strengthening the findings of this paper. Research limitations/implications Boundary conditions associated with the effect of temperature cues need empirical investigation. Future research needs to investigate if the effect holds with variability of coldness. Future research also needs to determine whether the documented effect occur across various pro-social contexts. Practical implications The results suggest that non-profit organizations incorporate “cold” cues into advertisements (people feeling cold or cold landscapes) to increase monetary donations and that these organizations should focus on targeting donors during wintertime (vs summer time) to get more donations. Originality/value This is the first research to demonstrate the effects of temperature cues on charitable donations. The added value of this paper is the use of physical temperature change to highlight the phenomenon, and the link between cold (vs warm) temperature cue and the need of social connection.

Effect of temperature during the synthesis process of CdSe nanoparticles using the colloidal technique

MRS Advances ◽  
2020 ◽  
Vol 5 (63) ◽  
pp. 3389-3395
Author(s):  
R. González-Díaz ◽  
D. Fernández-Sánchez ◽  
P. Rosendo-Francisco ◽  
G. Sánchez-Legorreta
Keyword(s):  
Scanning Tunneling Microscope ◽  
Electron Cloud ◽  
Cdse Nanoparticles ◽  
Effect Of Temperature ◽  
Synthesis Process ◽  
Scanning Tunneling ◽  
Tunneling Microscope ◽  
First Results ◽  
Effects Of Temperature ◽  
Scanning Electron

AbstractIn this work, the first results of the effects of temperature during the production of Se2- ions and the effect during the interaction of Cd2+ and Se2- ions in the synthesis process of CdSe nanoparticles are presented. The synthesis of CdSe was carried out by the colloidal technique, in the first one we used a temperature of 63 °C to produce Se2- ions and in the second one an interaction temperature of 49 °C. The samples were characterized using a Scanning Electron Microscope (SEM) and a Scanning Tunneling Microscope (STM). From the SEM micrographs it was possible to identify the thorns formation and irregular islands. STM micrographs reveal elliptical shapes with a regular electron cloud profile.

Synergetic effect of temperature and pressure on energetic and structural characteristics of {ZIF-8 + water} molecular spring

Nanoscale ◽  
2015 ◽  
Vol 7 (19) ◽  
pp. 8803-8810 ◽  
Author(s):  
Ya. Grosu ◽  
G. Renaudin ◽  
V. Eroshenko ◽  
J.-M. Nedelec ◽  
J.-P. E. Grolier
Keyword(s):  
Structural Characteristics ◽  
Synergetic Effect ◽  
Effect Of Temperature ◽  
Temperature And Pressure

Hyperthermia and voluntary exhaustion: integrating models and future challenges

2007 ◽  
Vol 32 (4) ◽  
pp. 808-817 ◽  
Author(s):  
Stephen S. Cheung
Keyword(s):  
Heat Storage ◽  
Brain Temperature ◽  
Voluntary Exercise ◽  
Future Research ◽  
Laboratory Studies ◽  
Exertional Heat Illness ◽  
Non Invasive ◽  
The Past ◽  
Future Challenges ◽  
Effects Of Temperature

Over the past decade, research interest has risen on the direct effects of temperature on exercise capacity and tolerance, particular in the heat. Two major paradigms have been proposed for how hyperthermia may contribute to voluntary fatigue during exercise in the heat. One suggests that voluntary exhaustion occurs upon the approach or attainment of a critical internal temperature through impairment in a variety of physiological systems. An alternate perspective proposes that thermal inputs modulate the regulation of self-paced workload to minimize heat storage. This review seeks to summarize recent research leading to the development of these two models for hyperthermia and fatigue and explore possible bridges between them. Key areas for future research and development into voluntary exhaustion in the heat include (i) the development of valid and non-invasive means to measure brain temperature, (ii) understanding variability in perception and physiological responses to heat stress across individuals, (iii) extrapolating laboratory studies to field settings, (iv) understanding the failure in behavioural and physiological thermoregulation that leads to exertional heat illness, and (v) the integration of physiological and psychological parameters limiting voluntary exercise in the heat.

scholarly journals Independent Searching During One-Shot Information Literacy Instruction Sessions: Is It an Effective Use of Time?

2012 ◽  
Vol 7 (4) ◽  
pp. 52 ◽  
Author(s):  
Rebekah Willson
Keyword(s):  
Information Literacy ◽  
Literacy Instruction ◽  
Search Time ◽  
Research Process ◽  
Future Research ◽  
Pedagogical Practice ◽  
Class Time ◽  
Information Literacy Instruction ◽  
Thesis Statement ◽  
Effective Use

Objective – To test the assumption that giving students time to research independently during a one-shot information literacy instruction (ILI) session, combined with scaffolding, is an effective pedagogical practice and a good use of class time. Methods – The study was conducted at a student-focused, four-year undergraduate institution with 8,500 full load equivalent students. Following brief, focused instruction in 10 different ILI sessions, first-, second-, and third-year students in 80-minute one-shot ILI sessions were given time to research independently. The librarian and instructor were present to scaffold the instruction students received. Students were asked to track the research they did during class using a research log and to fill out a short Web survey about their preparedness to do research and the usefulness of the ILI session. Results – Students agreed to have 83 research logs and 73 Web surveys included in the study. Students indicated that they felt more prepared to do research for their assignment after the ILI session and rated individual help from the librarian as the most useful aspect of the instruction session. Students did not rate independent time to do research as valuable as anticipated. Examining the research logs indicated that several things are taking place during the ILI session, including that students are demonstrating what was taught in the session in their searches, that their searches are progressing in complexity, and that students are using feedback from previous searches to inform the formulation of search queries. While students appear to be putting independent search time to good use, many students’ articulation of their thesis statement remains poor and searches continue to be fairly simplistic. Conclusions – This study gives evidence that giving independent research time in ILI sessions, with scaffolding, is an effective use of class time. The study also demonstrates that the majority of students are able to use what is taught during classes and that they are using class time effectively, though searching remains fairly simple. The focus of ILI sessions is on skill development, and future research should be on integrating IL into the curriculum to develop more complex skills and thinking needed in the research process.

scholarly journals Meteorological factors against COVID-19 and the role of human mobility

PLoS ONE ◽  
2021 ◽  
Vol 16 (6) ◽  
pp. e0252405
Author(s):  
Olivier Damette ◽  
Clément Mathonnat ◽  
Stéphane Goutte
Keyword(s):  
Solar Radiation ◽  
Indirect Effects ◽  
Meteorological Factors ◽  
Human Mobility ◽  
Human Behaviour ◽  
Effect Of Temperature ◽  
Empirical Literature ◽  
Physical Factors ◽  
Social Distancing ◽  
The Impact

In the vein of recent empirical literature, we reassessed the impact of weather factors on Covid-19 daily cases and fatalities in a panel of 37 OECD countries between 1st January and 27th July 2020. We considered five different meteorological factors. For the first time, we used a dynamic panel model and considered two different kinds of channels between climate and Covid-19 virus: direct/physical factors related to the survival and durability dynamics of the virus on surfaces and outdoors and indirect/social factors through human behaviour and individual mobility, such as walking or driving outdoors, to capture the impact of weather on social distancing and, thus, on Covid-19 cases and fatalities. Our work revealed that temperature, humidity and solar radiation, which has been clearly under considered in previous studies, significantly reduce the number of Covid-19 cases and fatalities. Indirect effects through human behaviour, i.e., correlations between temperature (or solar radiation) and human mobility, were significantly positive and should be considered to correctly assess the effects of climatic factors. Increasing temperature, humidity or solar radiation effects were positively correlated with increasing mobility effects on Covid-19 cases and fatalities. The net effect from weather on the Covid-19 outbreak will, thus, be the result of the physical/direct negative effect of temperature or solar radiation and the mobility/indirect positive effect due to the interaction between human mobility and those meterological variables. Reducing direct effects of temperature and solar radiation on Covid-19 cases and fatalities, when they were significant, were partly and slightly compensated for positive indirect effects through human mobility. Suitable control policies should be implemented to control mobility and social distancing even when the weather is favourable to reduce the spread of the Covid-19 virus.

scholarly journals Public Service Motivation and Individual Job Performance

2021 ◽  
pp. 254-277
Author(s):  
Adrian Ritz ◽  
Wouter Vandenabeele ◽  
Dominik Vogel
Keyword(s):  
Public Service ◽  
Indirect Effects ◽  
Individual Performance ◽  
Public Service Motivation ◽  
Service Performance ◽  
Future Research ◽  
Public Employees ◽  
Great Relevance ◽  
The Relationship

When pressure on human resource departments to make government more efficient is increasing, it is of great relevance to understand employees’ motivation and the fit of an employee with their job, as both contribute strongly to service performance. Therefore, this chapter discusses the role of public employees’ motivation and its relationship to individual performance. More specifically, this relationship is examined by focusing on public service motivation (PSM), a stream of research developed during the last three decades stressing the service orientation of public employees’ identity. Theoretically, how the relationship between PSM and individual performance is dependent on institutions is discussed, and an overview of the existing empirical evidence concerning this relationship is provided. The literature review discusses a variety of aspects such as direct vs. indirect effects, type of performance used, how performance is measured, and effect sizes. Finally, several avenues for future research are proposed, including methodological strategies.

scholarly journals The Emerging Application of Itaconate: Promising Molecular Targets and Therapeutic Opportunities

2021 ◽  
Vol 9 ◽  
Author(s):  
Jiaqi Lin ◽  
Jinxuan Ren ◽  
Dave Schwinn Gao ◽  
Yi Dai ◽  
Lina Yu
Keyword(s):  
Structural Characteristics ◽  
Tricarboxylic Acid Cycle ◽  
Immune Response Gene ◽  
Future Research ◽  
Response Gene ◽  
Biological Regulation ◽  
Important Intermediate ◽  
Cellular Immune ◽  
Substrate Proteins ◽  
Intermediate Metabolite

Metabolites have recently been found to be involved in significant biological regulation and changes. Itaconate, an important intermediate metabolite isolated from the tricarboxylic acid cycle, is derived from cis-aconitate decarboxylation mediated by immune response gene 1 in mitochondrial matrix. Itaconate has emerged as a key autocrine regulatory component involved in the development and progression of inflammation and immunity. It could directly modify cysteine sites on functional substrate proteins which related to inflammasome, signal transduction, transcription, and cell death. Itaconate can be a connector among immunity, metabolism, and inflammation, which is of great significance for further understanding the mechanism of cellular immune metabolism. And it could be the potential choice for the treatment of inflammation and immune-related diseases. This study is a systematic review of the potential mechanisms of metabolite associated with different pathology conditions. We briefly summarize the structural characteristics and classical pathways of itaconate and its derivatives, with special emphasis on its promising role in future clinical application, in order to provide theoretical basis for future research and treatment intervention.

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