Rate Of Increase In Activity Research Articles

Automatic Enrollment in Patient Portal Systems Mitigates the Digital Divide in Healthcare: An Interrupted Time Series Analysis of an Autoenrollment Workflow Intervention

PurposeRacial and ethnic healthcare disparities require innovative solutions. Patient portals enable online access to health records and clinician communication and are associated with improved health outcomes. Nevertheless, a digital divide in access to such portals persist, especially among people of minoritized race and non-English-speakers. This study assesses the impact of automatic enrollment (autoenrollment) on patient portal activation rates among adult patients at the University of California, San Francisco (UCSF), with a focus on disparities by race, ethnicity, and primary language.Materials and methodsStarting March 2020, autoenrollment offers for patient portals were sent to UCSF adult patients aged 18 or older via text message. Analysis considered patient portal activation before and after the intervention, examining variations by race, ethnicity, and primary language. Descriptive statistics and an interrupted time series analysis were used to assess the intervention’s impact.ResultsAutoenrollment increased patient portal activation rates among all adult patients and patients of minoritized races saw greater increases in activation rates than White patients. While initially not statistically significant, by the end of the surveillance period, we observed statistically significant increases in activation rates in Latinx (3.5-fold, p = < 0.001), Black (3.2-fold, p = 0.003), and Asian (3.1-fold, p = 0.002) patient populations when compared with White patients. Increased activation rates over time in patients with a preferred language other than English (13-fold) were also statistically significant (p = < 0.001) when compared with the increase in English preferred language patients.ConclusionAn organization-based workflow intervention that provided autoenrollment in patient portals via text message was associated with statistically significant mitigation of racial, ethnic, and language-based disparities in patient portal activation rates. Although promising, the autoenrollment intervention did not eliminate disparities in portal enrollment. More work must be done to close the digital divide in access to healthcare technology.

The Impact of Mobility Technicians on Mobility Rates for Hospitalized Adults in a Large Academic Medical Center

Introduction: Promotion of early mobility is part of an ongoing effort to mitigate the iatrogenic effects of hospitalization. To assist with mobilization efforts, nursing departments hire mobility technicians (MTs). However, little is known about whether hospital units that hire MTs have increased rates of patient mobilization. Purpose: The aim of this retrospective study was to determine whether units in an academic medical setting that hired an MT had greater improvements in mobility compared with similar units that did not hire an MT. Methods: Two levels of care-matched pairs of hospital units were used for this analysis. Within each pairing, one unit hired an MT. We captured activity days, defined as any documented out-of-bed activity in a 24-hour period, from standardized documentation. A monthly activity rate was calculated for each unit as the average daily percentage of patients who had out-of-bed orders. A difference-in-difference generalized linear model with a time-by-MT interaction, weighted for patient volume, was used to compare the relative improvement in mobility 6 months prior (baseline) to the hiring of an MT to periods 3 and 6 months post-hire. Results: There was a 2.3% absolute increase in activity rate from preperiod to the 3-month postperiod for units that hired an MT, as compared with a 5.1% decline in similar units that did not have an MT. This 8.4% difference in activity rates was statistically significant (P = .03). Over 6 months, the effects of the program waned. Control units continued to decline with a 7.1% drop from baseline) compared with a marginal 0.1% increase in activity rates for units with an MT from baseline. This relative 7.6% increase in mobility was not significant (P = .13). Conclusion: There was a significant improvement in activity rates associated with MT hire that declined over time. These results may be contributed to a nonstructured MT utilization, variability with nursing education on the role of the MT, and staffing challenges that diverted the use of the MT to nonmobility activities.

The Impact of E-Commerce on the Labor Market

E-commerce is one of the industrial sectors created as a result of technological progress, and has created new jobs for the economy. However, this sector is conditioned not only by the level of digitalization of each state, but also by the speed of integration of technology in the business environment. The main purpose of the article is to present the impact of e-Commerce development on the labor market. It also considers impact on the labor market of human capital with advanced technological skills. It focuses on data from a particular period situated between two major crises (the economic crisis of 2008 and the health crisis of 2020). We want to know to what extent a technology-created sector can compensate for technological unemployment. To test the working hypothesis, we developed a panel regression model for a sample of 28 European states. The results indicate that 99.5% of the variation in the labor market activity rate of people aged 15 to 64 years in the selected sample of states is explained by the model. This confirms that the development of e-Commerce and an increase in the percentage of technology-specialized human resources contribute to the increase in activity rate in the labor market. As a result, the labor market must be assisted in keeping up with technology by restructuring the education system, or introducing courses that maintain competitiveness and continuous development.

Management of Stress Fractures in Ballet.

Stress fractures are highly prevalent in ballet dancers and lead to notable time loss from dancing. Nutritional status, body composition, bone mineral density, and rate of increase in activity are among the components that influence risk for stress fractures. Proper evaluation and management of stress fractures is essential including a review of the causative factors involved in each stress injury. The purpose of this article was to summarize current evidence for risk factors involved in dancers' stress fractures to optimize prevention and treatment. Identified associated factors include low energy availability, low bone mineral density, low fat body composition, abnormal lower extremity biomechanics, genetic factors, and high training loads.

Physical and Mechanical Characterization Study of Thin Nitriding Layers Produced by Plasma on Low Alloy Steel

The present study has been conducted in order to obtain iron nitrides layer on AISI4140 steel by using plasma nitriding treatment. As one of several parameters of this process, the nitrogen rate ranging from 10 to 70% with a step of 20% was chosen. The structure, the morphology, the thickness and the hardness of iron nitrides layer were investigated. As a result, the improvement of surface hardness of nitrided steel was identified related with the increase of compound layer thickness due to the increase of activation rate. The steel substrate treated at high activation rate presents hardness 3 times higher than that of untreated steel.

Effect of pH on endogenous sunlight inactivation rates of laboratory strain and wastewater sourced E. coli and enterococci.

Understanding the influence of environmental factors like pH on solar disinfection in sunlight-dependent wastewater treatment systems can aid in improving their design. Previous research found pH to influence the solar disinfection rates of bacteria in water containing exogenous photosensitizers that facilitate photo-oxidative inactivation. However, limited research has been conducted on the role of external pH on endogenous solar inactivation processes that occur independent of exogenous photosensitizers. As such, we studied the inactivation rates of laboratory-cultured and wastewater-sourced E. coli and enterococci in sensitizer-free matrices with pH ranging from 4 to 10 under full-spectrum and UVB-filtered simulated sunlight. Elevated solar inactivation rates were observed at pH 4 for all bacterial populations evaluated, and at pH 10 for laboratory-cultured and wastewater-sourced E. coli. Dark inactivation was observed at the pH extremes for some bacteria, but did not contribute significantly to the increased inactivation rates observed under simulated sunlight at these pH, except for laboratory-cultured E. coli at pH 10. UVB light was found to play an important role in sunlight inactivation, albeit the contribution of UVB light to solar inactivation observed for Enterococcus spp. diminished at pH 4 and 5, suggesting that indirect endogenous inactivation pathways facilitated by longer wavelength light were enhanced under acidic conditions. Our findings demonstrate that external pH affects the kinetics of endogenous sunlight inactivation processes, and the results have potential to be integrated into models for predicting inactivation kinetics in sunlight-mediated treatment systems that operate over a range of pH conditions.

Microbial Response to Phytostabilization in Mining Impacted Soils Using Maize in Conjunction with Biochar and Compost.

Even after remediation, mining impacted soils can leave behind a landscape inhospitable to plant growth and containing residual heavy metals. While phytostabilization can be used to restore such sites by limiting heavy metal spread, it is reliant on soil capable of supporting plant growth. Manure-based biochars, coupled with compost, have demonstrated the ability to improve soil growth conditions in mine impacted soils, however there is a paucity of information regarding their influence on resident microbial populations. The objective of this study was to elucidate the impact of these soil amendments on microbial community structure and function in mine impacted soils placed under phytostabilization management with maize. To this aim, a combination of phospholipid fatty acid (PLFA) and enzymatic analyses were performed. Results indicate that microbial biomass is significantly increased upon addition of biochar and compost, with maximal microbial biomass achieved with 5% poultry litter biochar and compost (62.82 nmol g−1 dry soil). Microbial community structure was impacted by biochar type, rate of application, and compost addition, and influenced by pH (r2 = 0.778), EC (r2 = 0.467), and Mg soil concentrations (r2 = 0.453). In three of the four enzymes analyzed, poultry litter biochar treatments were observed with increased activity rates that were often significantly greater than the unamended control. Overall, enzyme activities rates were influenced by biochar type and rate, and addition of compost. These results suggest that using a combination of biochar and compost can be utilized as a management tool to support phytostabilization strategies in mining impacted soils.

Microbial activity, methane production, and carbon storage in Early Holocene North Sea peats

Abstract. Northern latitude peatlands act as important carbon sources and sinks, but little is known about the greenhouse gas (GHG) budgets of peatlands that were submerged beneath the North Sea during the last glacial–interglacial transition. We found that whilst peat formation was diachronous, commencing between 13 680 and 8360 calibrated years before the present, stratigraphic layering and local vegetation succession were consistent across a large study area. Large carbon stores were measured. In situ methane (CH4) concentrations of sediment pore waters were widespread but low at most sites, with the exception of two locations. Incubation experiments in the laboratory revealed molecular signatures of methanogenic archaea, with strong increases in rates of activity upon methylated substrate amendment. Remarkably, methanotrophic activity and the respective diagnostic molecular signatures could not be detected. Heterotrophic Bathyarchaeota dominated the archaeal communities, and bacterial populations were dominated by candidate phylum JS1 bacteria. In the absence of active methanogenic microorganisms, we conclude that these sediment harbour low concentrations of widespread millennia-old CH4. The presence of large widespread stores of carbon and in situ methanogenic microorganisms, in the absence of methanotrophic microorganisms, holds the potential for microbial CH4 production if catalysed by a change in environmental conditions.

Pupil dynamics: A potential proxy of neural preparation for goal-directed eye movement.

The pupils reflexively constrict or dilate to regulate the influx of light on the retinae. Pupillary light reflex (PLR) is susceptible to many non-visual cognitive processes including covert orientation of attention and planning rapid saccadic eye movement. The frontal eye field (FEF) and superior colliculus (SC), which also send projections to the PLR pathway, are two important areas in primate's brain for planning saccade and orientation of attention. The saccadic reaction time (SRT) and the rate of increase in activity of movement neurons in these areas are inversely correlated. This study addressed how pupil dynamics, activity in the FEF and SC and SRT are related in a saccadic decision-making task. The rate of visually evoked pupil constriction was found inversely related to SRT. This was further verified by simulating a homeomorphic biomechanical model of pupillary muscle plants, wherein we projected signals similar to build-up activity in the FEF and SC to the parasympathetic (constriction) and sympathetic (dilation) division of the PLR pathway, respectively. A striking similarity between simulated and observed dynamics of pupil constriction suggests that PLR is a potential proxy of saccade planning by movement neurons in the FEF and SC. Indistinguishable pupil dynamics when planned saccades were elicited versus when they were cancelled eliminated the possibility that the obligatory pre-saccadic shift of attention alone influenced the rate of pupil constriction. Our study envisages a mechanism of how the oculomotor system influences the autonomic activity in an attempt to timely minimize saccadic visual transients by regulating the influx of light.

Oxytocin prevents neuronal network pain-related changes on spinal cord dorsal horn in vitro

Recently, oxytocin (OT) has been studied as a potential modulator of endogenous analgesia by acting upon pain circuits at the spinal cord and supraspinal levels. Yet the detailed action mechanisms of OT are still undetermined. The present study aimed to evaluate the action of OT in the spinal cord dorsal horn network under nociceptive-like conditions induced by the activation of the N-methyl-d-aspartate (NMDA) receptor and formalin injection, using calcium imaging techniques. Results demonstrate that the spontaneous Ca2+-dependent activity of the dorsal horn cells was scarce, and the coactivity of cells was mainly absent. When NMDA was applied, high rates of activity and coactivity occurred in the dorsal horn cells; these rates of high activity mimicked the activity dynamics evoked by a neuropathic pain condition. In addition, although OT treatment increased activity rates, it was also capable of disrupting the conformation of coordinated activity previously consolidated by NMDA treatment, without showing any effect by itself. Altogether, our results suggest that OT globally prevents the formation of coordinated patterns previously generated by nociceptive-like conditions on dorsal horn cells by NMDA application, which supports previous evidence showing that OT represents a potential therapeutic alternative for the treatment of chronic neuropathic pain.

Quality of Goat’s Milk Exposed Ultraviolet and High Pulsed Electric Field

The study of microbial inactivation using HPEF method under long treatment’s time at static system had significant effect (P<0.01) towards physicochemical properties. In order to increase inactivation rate and to maintain its physicochemical properties, HPEF method was combined with UV which has been proved enable to decrease the total microbe population. The research was objected to obtain information related the frequency treatments (10, 15 and 20 Hz) under UV-HPEF combination toward physicochemical properties and microbiological properties. The statistical analysis was conducted using Complete Randomized Design. The result showed that insignificant difference was occurred among frequency treatments at 10, 15 and 20 Hz. The decreased of total microbe was 30.00; 89.49 and 85.67%, respectively. Inactivation rate at each frequency was 0.15; 0.98 and 0.84 log cycle or 3.49; 22.04 and 19.01 log cfu/ml/hour, respectively; D value was 6.46; 1.02 and 1.19 hour, respectively; while k value was 0.36; 2.25 and 1.94 hour-1, respectively. The best treatment was obtained by HPEF-UV series treatment at 15 Hz.

Low pressure supercritical carbon dioxide warm pasteurization to inactivate muscle protease and lipase of nile tilapia with emphasis on its fillet textural properties

Supercritical carbon dioxide warm pasteurization was applied to reduce the activity of muscle protease and lipase of nile tilapia. Combination between 75 bar and 80 bar with 40°C as well as 80 bar with 50°C were applied on tilapia fillet. Exposure time was set from 10 min to 25 min with an interval of 5 min. It was found that supercritical carbon dioxide have greater effect on muscle protease with lesser effect on muscle lipase. Increasing temperature at 80 bar was slightly increase inactivation rate of muscle enzymes, with the cost of severe degradation on fillet textural quality. The product of this warm pasteurization however, was aimed to be stored under chilled storage and not for direct human consumption without further processing.

The Role of High Voltage Electrode Material in the Inactivation of E. coli by Direct-in-Liquid Electrical Discharge Plasma

This work investigates the effect of high voltage (HV) electrode material of a point-plane plasma reactor on the inactivation rate of E. coli in both direct plasma and post-discharge inactivation processes. For the direct plasma processes, nickel chromium alloy, iron, tungsten and copper were used as HV electrode materials. In comparison with the other three materials, a significantly higher inactivation rate of E. coli was achieved with copper as the HV electrode. The inactivation effect was demonstrated to be mainly associated with the toxicity of copper ions, rather than from copper nanoparticles released from the electrode during the treatment. Similarly, for the post-discharge inactivation process, a higher E. coli inactivation rate was achieved in both post-plasma and plasma-treated water treatment using copper as the HV electrode, as compared to the tungsten control case. Increased inactivation rates are a result of a synergistic action between copper ions and the hydrogen peroxide generated by the plasma.

How low can U go?

▀ Although there is growing evidence that wage growth is building in response to low and falling unemployment in the advanced economies, there is scope for unemployment rates to fall further without triggering a pay surge. ▀ For a start, current unemployment rates in comparison to past cyclical troughs overstate the tightness of labour markets. Demographic trends associated with the ageing ‘baby boomer’ bulge have pushed down the headline unemployment rate – unemployment rates among older workers are lower than those of younger cohorts. And in a historical context, Europe still has a large pool of involuntary part‐timers. ▀ In addition, rising participation rates mean that demographics are less of a constraint on employment growth than widely assumed. In both 2017 and 2018, had it not been for increased activity rates (mainly for older cohorts), unemployment would have had to fall more sharply to accommodate the same employment increase. We expect rising participation rates to continue to act as a pressure valve for the labour market. ▀ Finally, unemployment rates were generally far lower during the 1950s and 1960s than now. If wages stay low relative to productivity, as was the case during that prior era, employment growth may remain strong, with unemployment falling further. In the post‐war era, low wages were partly a function of a grand bargain in which policy‐makers provided full employment in return for low wage growth. ▀ There is evidence to suggest that many post‐crisis workers have opted for the security of their existing full‐time job and its associated benefits despite lower wage growth, rather than change job and potentially earn more; the rise of the ‘gig economy’ has led some workers to value what they already have more. Put another way, the non‐accelerating inflation rate of unemployment (NAIRU) has fallen. So, the role of labour market tightness in pushing wage growth higher may continue to surprise to the downside.

The particle size dependence of CO oxidation on model planar titania supported gold catalysts measured by parallel thermographic imaging

A parallel thermographic screening methodology has been developed which allows the measurements of the particle size and support influences on model planar heterogeneous catalysts. A screening chip was designed and fabricated in order to produce multiple fields of low stress silicon nitride membranes that exhibit low thermal conductivity and heat capacity. The heat generated on supported model catalysts in an exothermic reaction on the membranes was measured using a thermal (infra-red) imaging camera, which in turn provided a measure of the turn over frequency (TOF) for the reaction. The catalytic activity for CO oxidation on titania supported gold model catalysts with varying particle size has been measured on 100 catalysts simultaneously. The reaction has been investigated at 80 °C and 170 °C, and pressures ranging between 0.06 mbar and 1.5 mbar for various O2:CO ratios. Under all conditions investigated, a monotonic increase in the TOF is observed with decreasing particle diameter (d) which is proportional to ca. d−1.8 in the range 6 > d/nm > 1.5. This is in the opposite direction to the number of potentially active perimeter sites which increases linearly with increasing particle size on these catalysts. We show that the surface area specific activity of the gold is increasing even more steeply with reduced particle size, and is proportional to ca. d−4. This rate of increase in activity is significantly higher than one would expect by any increase one may expect as a result of more active low co-ordinate sites on the gold. The steep increase in activity is ascribed to an electronic interaction between the substrate and the particle.

Anaerobic thermophilic trickle bed reactor as a promising technology for flexible and demand-oriented H2/CO2 biomethanation

Increasing energy production from variable renewable sources, especially wind and solar photovoltaic, requires measures to maintain a stable electricity grid that balances power production and demand. Flexible conversion of excess renewable energy into a storable substitute natural gas via H2/CO2 biomethanation may be a suitable approach for tackling this challenge. This study investigated the performance of an anaerobic thermophilic trickle bed reactor (ATTBR) during demand-oriented H2/CO2 biomethanation. Different combinations of standby periods (SPs) varying from 1 to 8 days and standby temperatures (25 °C and 55 °C) as well as their repetitive effect on the biological gas conversion performance were systematically evaluated using a standardized restart procedure. The results revealed that the influence of the SP temperature on the restart performance by far outweighed the length of SP investigated. While the investigated ATTBR represents a robust system with a very good restart performance after 25 °C SPs, the repetitive effect of 55 °C SPs was in particular identified as a critical standby setting that causes deterioration of the restart performance. This may be attributed to increased inactivation rates for thermophilic hydrogenotrophic methanogens at 55 °C, which also influences volatile fatty acid transformation dynamics and leads to substantial propionate accumulation (∼3000 mg/L) during 55 °C SPs. For the application of ATTBR in dynamic energy conversion and storage scenarios, further research is required to reduce response times and enhance flexibility.

Novelty-related behavior of young and adult dopamine transporter knockout rats: Implication for cognitive and emotional phenotypic patterns.

Attention deficit hyperactivity disorder (ADHD) is a neuropsychiatric disorder characterized by a developmentally inappropriate, pervasive and persistent pattern of severe inattention, hyperactivity and impulsivity. Despite onset in early childhood, ADHD may continue into adulthood with substantial impairment in social, academic and occupational functioning. A new animal model of this disorder was developed in rats with genetic deletion of the dopamine transporter (DAT) gene (dopamine transporter knockout rats; DAT-KO rats). We analyzed the behavior of DAT-KO rats for a deeper phenotypical characterization of this model. We first tested rats of the 3 genotypes at different ages (preadolescent, adolescent and adult), in a novelty-seeking test using a black/white box (Experiment 1). After that, we tested adult rats in a novelty-preference test using a 3-chamber apparatus with different shapes (Experiment 2). Experiment 1: as evidenced by analysis of time spent in the novel environment, adult DAT heterozygous (DAT-HET) rats show an increased curiosity-driven exploration compared with wild-type (WT) controls while DAT-KO rats did not recognize novelty. The locomotor activity data show a minimal difference between genotypes at adolescent age while the preadolescent and adult DAT-KO rats have significantly increased activity rate compared with WT and DAT-HET subjects. Experiment 2: in this case, due to more clearly evident spatial differences, time spent in novel environment was not significantly different among genotypes. During first 10 minutes, DAT-KO rats showed a decreased hyperactivity, apparently related to curiosity and attention to the new environments. In conclusion, DAT-KO rats may show some inattention while more novelty-seeking traits appear in DAT-HET rats.

INDUCED TEMPORAL AND SPATIAL VARIATION IN HOST DEFENCE ENZYMES IN RESPONSE TO FUSARIUM WILT IN CHICKPEA

The present study evaluated the defense response of Chickpea wilt resistant and susceptible cultivars inoculated with pathogen Fusarium oxyporum f.sp. ciceri (Foc). Evaluation of pre-induced and pathogen-induced defense at 7 (S1), 15 (S2) and 30 (S3) days showed that the enzymatic activities differed not only within the root, stem and leaves but also between susceptible and resistant cultivars of chickpea and increased after inoculation with Foc. Peroxidase (PO) activity increased in all the tissues from S1 to S2 and declined thereafter. Conspicuous changes occurred at the rate of increase in activity of the enzyme between resistant and susceptible cultivars upon Foc inoculation over their corresponding control at the S2. Polyphenol oxidase (PPO) activity in resistant cultivars increased by 30% with over uninoculated control and induction was up to S3. The level of enzyme activity diminished from S2 to S3 and even fell below control levels in susceptible cultivars. Catalase (CAT) activity followed peroxidase trend however it was induced at S1 in Foc inoculated and at S2 in un-inoculated plants. Increase in CAT induction was significant in leaf tissues of infected plants and continued up to S3. Phenylalanine ammonia lyase (PAL) activity increased from S1 to S2 and thereafter it either slightly decreased or remained unchanged at S3. Foc inoculation elicited a sharp increase in PAL activity in the leaf and stem tissue of resistant cultivars. Foc inoculated induced β-1,3-glucanase and chitinase activity in the test cultivars. Maximum induction of chitinase was observed at S2 in roots of resistant cultivars whereas un-inoculated plants showed much less conspicuous changes. β-1,3-glucanase activity was high in stem tissues. Both control and challenged plants had higher levels of β-1,3-glucanase activity at S2 and S3, but the proportionate increase was much higher in resistant cultivars. The expression pattern of these defense enzymes reveals their use as established resistance markers and provides scope for manipulating their expression and development of wilt-resistant transgenic chickpea.

Visible light photocatalytic inactivation of Escherichia coli by natural pyrite assisted by oxalate at neutral pH

Escherichia coli is the main microbial indicator in water. The enhancement of visible light photocatalytic inactivation of bacteria using oxalate – natural pyrite was evaluated in order to prevent development of disinfection byproducts and cost-effective operation. Influences of operating parameters include light intensity, pyrite dosage, particle size, oxalate concentration; pH, O2, H2O2 and inorganic ions were evaluated in a batch environment. Increase of light intensity, O2 flow, H2O2 concentration, smaller particle size and increased pyrite dosage boosted the inactivation rate of E. coli through more generation of reactive spices (RSs). Oxalate increased inactivation rate of E. coli via increasing release of iron, preventing formation of oxy layer on pyrite surface, high quantum yields of Fe+3 – organic ligand, enhancing permeability of E. coli membrane, increasing pH range close to neutral and visible light region. The scavenging tests confirmed participation of OHb, OHs and ∙O2− as dominant RSs in the system. The influence of inorganic ions on inactivation rate of E. coli was obtained as F−>HCO3−>Ca+2>NO3−>Cl−>SO4−2. The regrowth of E. coli was not observed in the optimum condition. This work suggests that oxalate – natural pyrite complex under light-emitting diode visible light can be a proper alternative for disinfection of natural water.

Cannibalism by damselflies increases with rising temperature.

Trophic interactions are likely to change under climate warming. These interactions can be altered directly by changing consumption rates, or indirectly by altering growth rates and size asymmetries among individuals that in turn affect feeding. Understanding these processes is particularly important for intraspecific interactions, as direct and indirect changes may exacerbate antagonistic interactions. We examined the effect of temperature on activity rate, growth and intraspecific size asymmetries, and how these temperature dependencies affected cannibalism in Lestes congener, a damselfly with marked intraspecific variation in size. Temperature increased activity rates and exacerbated differences in body size by increasing growth rates. Increased activity and changes in body size interacted to increase cannibalism at higher temperatures. We argue that our results are likely to be general to species with life-history stages that vary in their temperature dependencies, and that the effects of climate change on communities may depend on the temperature dependencies of intraspecific interactions.