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1. Design of low temperature-responsive hydrogels used as a temperature indicator

   https://doi.org/10.1016/j.polymer.2019.04.052  

   Tang, Li; Gong, Liang; Zhou, Guiyin; Liu, Lingyun; Zhang, Dong; Tang, Jianxin; Zheng, Jie (May 2019, Polymer)
2. Temperature Dependence of Peptide Conformational Equilibria from Simulations at a Single Temperature

   https://doi.org/10.1021/acs.jpca.1c00150  

   Katiyar, Ankita; Thompson, Ward H. (March 2021, The Journal of Physical Chemistry A)

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3. Persistent effect of temperature on GDP identified from lower frequency temperature variability

   https://doi.org/10.1088/1748-9326/ac82c2  

   Bastien-Olvera, Bernardo Granella (January 2022, Environmental research letters)

   It is well established that temperature variability affects a range of outcomes relevant to human welfare, including health, emotion and mood, and productivity across a number of economic sectors. However, a critical and still unresolved empirical question is whether temperature variation has a long-lasting effect on economic productivity and, therefore, whether damages compound over time in response to long-lived changes in temperature expected with climate change. Several studies have identified a relationship between temperature and gross domestic product (GDP), but empirical evidence as to the persistence of these effects is still weak. This paper presents a novel approach to isolate the persistent component of temperature effects on output using lower frequency temperature variation. The effects are heterogeneous across countries but collectively, using three different GDP datasets, we find evidence of persistent effects, implying temperature affects the determinants of economic growth, not just economic productivity. This, in turn, means that the aggregate effects of climate change on GDP may be far larger and far more uncertain than currently represented in integrated assessment models used to calculate the social cost of carbon. 

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4. Estimation of body temperature of Bornean orangutans (Pongo pygmaeus wurmbii) from fecal temperature measurements

   Harwell, Faye S; Gotama, Rinaldi; Syainullah, Muhammad; Junardi, Junardi; Mitra Setia, Tatang; Philp, Brodie; Knott, Cheryl D. (November 2019, Fifth Annual Meeting of the Northeastern Evolutionary Primatologists)

   Monitoring health status is a critical aspect of primate conservation, yet can be difficult to noninvasively investigate in the wild. Internal body temperature, a marker of health in endotherms, has been tested in humans and chimpanzees using two different fecal temperature methods: using the peak internal temperature (PIT) or applying a sigmoid curve (SC). We tested both methods on wild and rehabilitant Bornean orangutans to determine if either is a feasible methodology for arboreal mammals. The SC method involves a series of temperatures for each sample that we fitted to a sigmoid curve, whereas the PIT method involved a single peak temperature recording. Estimates from the two methods were not significantly different in either our wild (T(88)= -2.0781, P=0.0406) or rehabilitant (T(29)= -2.8404, P=0.0082) samples. Adult rehabilitant body temperatures (N=9; 34.62 ± 1.32°C) were estimated to be hotter than those in the wild (N=107; 33.59 ± 1.66°C), although not significantly different (T(115)=1.9859; P=0.0493). In our model, testing a number of factors, we found height of fecal drop (P=0.0071), fecal weight (P=0.0198), and time of day (P=0.0029) to significantly affect body temperature estimates. Our field sample (N=107) indicates that wild orangutans have an internal fecal temperature, ranging between 29.5 and 37.3°C, lower than mean temperatures for chimpanzees or humans. This supports the finding that orangutans have lower metabolic rates than do most other eutherian mammals. Lower body temperature may serve as a metabolic adaptation of orangutans to survive extended periods of low food availability when energy needs to be conserved. 

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5. Low-temperature rheology of calcite

   https://doi.org/10.1093/gji/ggz577  

   Sly, Michael K; Thind, Arashdeep S; Mishra, Rohan; Flores, Katharine M; Skemer, Philip (April 2020, Geophysical Journal International)

   SUMMARY Low-temperature plastic rheology of calcite plays a significant role in the dynamics of Earth's crust. However, it is technically challenging to study plastic rheology at low temperatures because of the high confining pressures required to inhibit fracturing. Micromechanical tests, such as nanoindentation and micropillar compression, can provide insight into plastic rheology under these conditions because, due to the small scale, plastic deformation can be achieved at low temperatures without the need for secondary confinement. In this study, nanoindentation and micropillar compression experiments were performed on oriented grains within a polycrystalline sample of Carrara marble at temperatures ranging from 23 to 175 °C, using a nanoindenter. Indentation hardness is acquired directly from nanoindentation experiments. These data are then used to calculate yield stress as a function of temperature using numerical approaches that model the stress state under the indenter. Indentation data are complemented by uniaxial micropillar compression experiments. Cylindrical micropillars ∼1 and ∼3 μm in diameter were fabricated using a focused ion beam-based micromachining technique. Yield stress in micropillar experiments is determined directly from the applied load and micropillar dimensions. Mechanical data are fit to constitutive flow laws for low-temperature plasticity and compared to extrapolations of similar flow laws from high-temperature experiments. This study also considered the effects of crystallographic orientation on yield stress in calcite. Although there is a clear orientation dependence to plastic yielding, this effect is relatively small in comparison to the influence of temperature. 

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