Multimetal rare earth MOFs for lighting and thermometry: tailoring color and optimal temperature range through enhanced disulfobenzoic triplet phosphorescence

2013 ◽  
Vol 1 (39) ◽  
pp. 6316 ◽  
Author(s):  
Richard F. D'Vries ◽  
Susana Álvarez-García ◽  
Natalia Snejko ◽  
Luisa E. Bausá ◽  
Enrique Gutiérrez-Puebla ◽  
...  
Keyword(s):  
Rare Earth ◽  
Optimal Temperature ◽  
Temperature Range ◽  
Optimal Temperature Range

Effects of temperature on growth of north-east Pacific moon jellyfish ephyrae, Aurelia labiata (Cnidaria: Scyphozoa)

2005 ◽  
Vol 85 (3) ◽  
pp. 569-573 ◽  
Author(s):  
Chad L. Widmer
Keyword(s):  
Good Condition ◽  
Bell Diameter ◽  
Optimal Temperature ◽  
Moon Jellyfish ◽  
Poor Condition ◽  
Temperature Range ◽  
North East ◽  
East Pacific ◽  
Optimal Temperature Range ◽  
Effects Of Temperature

The effects of ten different water temperatures on the growth of newly released ephyrae of Aurelia labiata were explored. Ephyrae grown at 21°C showed the greatest growth, increasing in bell diameter from about 4.0 mm to 14.5 mm in 14 days and remained in good condition for the duration of the experiment. Ephyrae subjected to other temperatures grew at different rates. Ephyrae maintained at 8°C gradually decreased in size during the experiment, shrinking in bell diameter from about 4.0 mm to 3.8 mm by day 14, but remained in apparent good condition. Ephyrae reared at 22.5°C and above everted their bells, were in poor condition, and were unable to feed or swim effectively by about day ten. In this study the optimal temperature range for rearing A. labiata ephyrae was 12°C—21°C, which corresponds with the reported range for this species.

scholarly journals Co-overproducing Rubisco and Rubisco activase enhances photosynthesis in the optimal temperature range in rice

2020 ◽  
Author(s):  
Mao Suganami ◽  
Yuji Suzuki ◽  
Youshi Tazoe ◽  
Wataru Yamori ◽  
Amane Makino
Keyword(s):  
Rubisco Activase ◽  
Co2 Assimilation ◽  
Initial Slope ◽  
Simultaneous Increase ◽  
Optimal Temperature ◽  
Wild Type ◽  
Protein Ratio ◽  
Temperature Range ◽  
Optimal Temperature Range ◽  
Highly Correlated

Abstract Rubisco limits C3 photosynthesis under some conditions and is therefore a potential target for improving photosynthetic efficiency. The overproduction of Rubisco is often accompanied by a decline in Rubisco activation, and the protein ratio of Rubisco activase (RCA) to Rubisco (RCA/Rubisco) greatly decreases in Rubisco-overproducing plants (RBCS-ox). Here, we produced transgenic rice (Oryza sativa) plants co-overproducing both Rubisco and RCA (RBCS-RCA-ox). Rubisco content in RBCS-RCA-ox plants increased by 23%–44%, and RCA/Rubisco levels were similar or higher than those of wild-type plants. However, although the activation state of Rubisco in RBCS-RCA-ox plants was enhanced, the rates of CO2 assimilation at 25°C in RBCS-RCA-ox plants did not differ from that of wild-type plants. Alternatively, at a moderately high temperature (optimal range of 32°C–36°C), the rates of CO2 assimilation in RBCS-ox and RBCS-RCA-ox plants were higher than in wild-type plants under conditions equal to or lower than current atmospheric CO2 levels. The activation state of Rubisco in RBCS-RCA-ox remained higher than that of RBCS-ox plants, and activated Rubisco content in RCA overproducing, RBCS-ox, RBCS-RCA-ox, and wild-type plants was highly correlated with the initial slope of CO2 assimilation against intercellular CO2 pressures (A:Ci) at 36°C. Thus, a simultaneous increase in Rubisco and RCA contents leads to enhanced photosynthesis within the optimal temperature range.

Effect of Al Additions on the Synthesis of Single-Phase Ti3SiC2

2004 ◽  
Vol 848 ◽  
Author(s):  
ZhengMing Sun ◽  
Songlan Yang ◽  
Hitoshi Hashimoto ◽  
Michel W. Barsoum
Keyword(s):  
Single Phase ◽  
Sintering Temperature ◽  
Pulse Discharge ◽  
Optimal Temperature ◽  
Powder Mixtures ◽  
Temperature Range ◽  
Optimal Temperature Range ◽  
Al Addition ◽  
Al Additions

ABSTRACTPowder mixtures of 3Ti/SiC/C/xAl with different Al contents (x=0∼0.2) were reactively sintered by pulse discharge sintering (PDS) process, to reveal the effect of Al addition on the single-phase bulk Ti3SiC2 synthesis. It was found that the optimal sintering temperature for the Ti3SiC2 synthesis is greatly decreased by the Al addition. Almost single-phase bulk Ti3SiC2 material can be synthesized from 3Ti/SiC/C/0.15Al and 3Ti/SiC/C/0.20Al powder mixtures at temperature as low as 1200°C for 15 min by PDS. And the optimal temperature range for the Ti3SiC2 formation is enlarged obviously by the Al addition.

scholarly journals Thermal-Biological Aspects of Seed Germination of Colubrina glandulosa Perkins Under Different Temperatures

2018 ◽  
Vol 10 (6) ◽  
pp. 390
Author(s):  
João Luciano De A. Melo Jr ◽  
Luan Danilo F. de A. Melo ◽  
Vilma M. Ferreira ◽  
João C. de Araújo Neto ◽  
Clíssia B. da Silva ◽  
...  
Keyword(s):  
Quadratic Model ◽  
Velocity Variation ◽  
Maximum Temperature ◽  
Optimal Temperature ◽  
Temperature Range ◽  
Germination Process ◽  
Optimal Temperature Range ◽  
Different Temperatures ◽  
Alternating Temperature ◽  
Experimental Values

The aim of this study was to determine the cardinal temperatures for germinating colubrina seeds, verify isothermal velocity variation based on the transition state model and calculate the ΔH≠ variation as a function of temperature. Seeds were incubated at constant temperatures of 5, 10, 15, 20, 25, 30, 35 and 40 oC and alternating temperature from 20-30 oC in an 8-hour photoperiod. The variables analyzed were: G, PC, IVG, TMG, VMG, Fi, U, Z, CR, CPA, MSR and MSP. Arrhenius equation was linearized by logarithmic transformation, producing the graph of -RlnV × 1/T from the experimental values of velocity. A net enthalpy change (Delta H≠) in relation to temperature was represented by the expression: Delta H≠ = [RT(Theta – T) × (Tm + TM)]/[(T – Tm) × (TM – T)]. The logarithm regression of the reaction rate on the reciprocal of the temperature fit best to the quadratic model. The distribution of Delta H≠ with asymptotes close to Tm and TM indicated that the processes that occurred in the supra-optimal temperature range were of a different nature from those that occurred in the infra-optimal temperature range. The data showed |Delta H≠| < 12 Kcal/mol in the optimal range and |Delta H≠| > 30 Kcal/mol for temperatures of 10, 15 and 35 oC. The minimum and maximum temperature limits were 10 and 35 oC, respectively. Germination speed was related to temperature in a curvilinear manner. The germination process was endergonic and only occurred when energy was ≥ -38.35 Kcal/mol and ≤ 32.42 Kcal/mol.

Seed ecology in a population of Acaciaholosericea

1990 ◽  
Vol 20 (7) ◽  
pp. 927-933 ◽  
Author(s):  
A. K. Hellum
Keyword(s):  
Western Australia ◽  
Seed Weight ◽  
Entire Temperature Range ◽  
Optimal Temperature ◽  
Temperature Range ◽  
Seed Ecology ◽  
Optimal Temperature Range ◽  
The Mean

One population of seed from 18 trees of Acaciaholosericea A. Cunn. ex G. Don from Western Australia was studied. Seeds were weighed individually and germinated in replicates of 25 to try to describe population behaviour under constant temperatures between 17 and 40 °C. Total germination peaked at between 95 and 99% at temperatures between 17 and 35 °C and then dropped sharply to 45% at 40 °C. Temperatures between 17 and 35 °C, therefore, did not influence total germination, and all respective slope coefficients were the same over the entire temperature range. This reflects a very wide optimal temperature range for germination. In all cases, seeds slightly heavier than the mean (11.6 mg) reached the highest rate of total germination. Peak germination occurred in progressively heavier seeds as temperatures were raised from 17 to 40 °C. The germinative rate was also found to decrease as seed weight increased at temperatures between 25 and 35 °C. This was true for seeds from single trees and for pooled seed. At 20 and 40 °C, however, lighter seeds tended to lose the ability to germinate quickly. Lighter seeds also tended to germinate well without a boiling pretreatment, whereas heavier seeds needed to be boiled for 90 s before germination could proceed. Boiling tended to kill the lightest seeds. Seeds weighing between 8 and 10 mg were able to germinate more quickly initially than either lighter or heavier seeds, regardless of which trees the seeds came from.

Optimal temperature range for low-temperature preservation of dissociated neonatal rat cardiomyocytes

Cryobiology ◽  
2011 ◽  
Vol 63 (3) ◽  
pp. 279-284 ◽  
Author(s):  
Tsutomu Uchida ◽  
Masafumi Nagayama ◽  
Toshio Taira ◽  
Kyoko Shimizu ◽  
Masato Sakai ◽  
...  
Keyword(s):  
Low Temperature ◽  
Neonatal Rat ◽  
Optimal Temperature ◽  
Rat Cardiomyocytes ◽  
Temperature Range ◽  
Neonatal Rat Cardiomyocytes ◽  
Optimal Temperature Range
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