scholarly journals Selection of healing agents for autonomous healing of alumina at high temperatures

2016 ◽  
Vol 36 (16) ◽  
pp. 4141-4145 ◽  
Author(s):  
Linda Boatemaa ◽  
Cees Kwakernaak ◽  
Sybrand van der Zwaag ◽  
Willem G. Sloof
Keyword(s):  
High Temperatures ◽  
Selection Of

scholarly journals Isolation of thermo-tolerant and ethanol-tolerant yeast from local fermented foods and their potential as bioethanol producers

2021 ◽  
Vol 924 (1) ◽  
pp. 012077
Author(s):  
M Nurcholis ◽  
A Setiawan ◽  
J Kusnadi ◽  
J M Maligan
Keyword(s):  
High Temperatures ◽  
Fermented Food ◽  
Test Method ◽  
Fermented Foods ◽  
Three Stages ◽  
Liquid Chemical ◽  
The Cost ◽  
Tolerance To Ethanol ◽  
Descriptive Method ◽  
Selection Of

Abstract Bioethanol is a liquid chemical produced from sugar-, starch-or lignocellulosic-based biomass through fermentation by ethanol-producing microbes. Ethanol-producing yeast generally has limited tolerance to ethanol and has limitation to high temperatures above 40°C. High-temperature tolerant yeast is required because it potentially reduces the risk of contamination and it also reduces the cost of the cooling process. This study aims to determine ethanol-producing yeasts that have tolerance to ethanol and high temperatures from local fermented food products. This study uses a descriptive method conducted in three stages. Isolation and selection of yeast were performed from 18 local fermented foods in Indonesia. Temperature and ethanol tolerance of selected yeast were performed by using a spot test method. The ethanol content was tested using Gas Chromatography (GC). The results exhibited that isolate F08b had the highest tolerance to ethanol and temperature. The isolate was able to grow up to a temperature of 50°C and a concentration of 18% ethanol. Meanwhile, isolate F10 was able to produce the highest ethanol concentration at 3.37% (v/v) in 48th-hour fermentation.

scholarly journals High-Throughput Genotyping of Resilient Tomato Landraces to Detect Candidate Genes Involved in the Response to High Temperatures

Genes ◽  
2020 ◽  
Vol 11 (6) ◽  
pp. 626
Author(s):  
Fabrizio Olivieri ◽  
Roberta Calafiore ◽  
Silvana Francesca ◽  
Carlo Schettini ◽  
Pasquale Chiaiese ◽  
...  
Keyword(s):  
Candidate Genes ◽  
High Temperatures ◽  
Elevated Temperatures ◽  
Genotyping By Sequencing ◽  
High Impact ◽  
Yield Trait ◽  
Genetic Mechanisms ◽  
Stable Yield ◽  
Selection Of

The selection of tolerant varieties is a powerful strategy to ensure highly stable yield under elevated temperatures. In this paper, we report the phenotypic and genotypic characterization of 10 tomato landraces to identify the best performing under high temperatures. The phenotyping of five yield-related traits allowed us to select one genotype that exhibits highly stable yield performances in different environmental conditions. Moreover, a Genotyping-by-Sequencing approach allowed us to explore the genetic variability of the tested genotypes. The high and stable yielding landrace E42 was the most polymorphic one, with ~49% and ~47% private SNPs and InDels, respectively. The effect of 26,113 mutations on proteins’ structure was investigated and it was discovered that 37 had a high impact on the structure of 34 proteins of which some are putatively involved in responses to high temperatures. Additionally, 129 polymorphic sequences aligned against tomato wild species genomes revealed the presence in the genotype E42 of several introgressed regions deriving from S. pimpinellifolium. The position on the tomato map of genes affected by moderate and high impact mutations was also compared with that of known markers/QTLs (Quantitative Trait Loci) associated with reproductive and yield-related traits. The candidate genes/QTLs regulating heat tolerance in the selected landrace E42 could be further investigated to better understand the genetic mechanisms controlling traits for high and stable yield trait under high temperatures.

Selection of Eggplant Genotypes Tolerant to High Temperatures

2019 ◽  
pp. 1-10 ◽  
Author(s):  
Ricardo de Normandes Valadares ◽  
Danieli Andrade Nóbrega ◽  
Carolina da Silva Moreira ◽  
Jordana Antônia dos Santos Silva ◽  
Adônis Queiroz Mendes ◽  
...  
Keyword(s):  
High Temperatures ◽  
Pollen Viability ◽  
Block Design ◽  
Indirect Selection ◽  
Fruit Weight ◽  
Fixation Index ◽  
Width Ratio ◽  
Randomized Block Design ◽  
Positive Correlations ◽  
Selection Of

In the northeast of Brazil, the yield of eggplant has been unpredictable, especially when the flowering coincides with the hottest period of the year. The objective of this study was to evaluate eggplant genotypes for tolerance to high temperatures and to identify correlations between traits that aid the indirect selection of genotypes tolerant to high temperatures. Twenty-two genotypes were arranged in a randomized block design with four replications conducted in a greenhouse and in the open field, both located at the Universidade Federal Rural de Pernambuco, Recife, Pernambuco, Brazil, between December 2016 and May 2017. Positive correlations were obtained for the pairs, number of fruits per plant (NFP) x fruit fixation index (FFI), NFP x production per plant (PP) and PP x FFI and negative for the pair NFP x PP. The associations among the traits pollen viability (PV), FFI, NFP and PP were low and/or negative for all pairs in both environments and indicates that the indirect selection for FFI and PP through PV is not efficient. Higher values for PV, NFP, PP were observed in greenhouse cultivation, while in the field the genotypes had the best performance for fruit weight (FWe) FFI, fruit length (FL), fruit width (FWi) and length/width ratio of fruit (FLWR). In high temperature conditions, the genotypes CNPH 135, CNPH 93, CNPH 79, CNPH 84, CNPH 71, CNPH 71, CNPH 668, Ajimurasaki F1 and Kokushi Onaga F1 with good FFI and CNPH 135 with the highest FFI, PP, PV and PWe. The FFI in 45.4% of the genotypes under high temperatures was low, around 21.3 and 40.5%. In the field, genotypes CNPH 84 and CNPH 668 stood out with the best FFI (> 60%).

The selection of materials resistant to molten tin at high temperatures

1969 ◽  
Vol 11 (10) ◽  
pp. 819-821 ◽  
Author(s):  
A. R. Petrova ◽  
V. G. Kaufman ◽  
L. M. Vdovina ◽  
Yu. A. Shakhnes
Keyword(s):  
High Temperatures ◽  
Selection Of

Selection of carrot progenies for seed germination at high temperatures

2019 ◽  
pp. 181-184
Author(s):  
A.D.F. Carvalho ◽  
P.P. Silva ◽  
G.O. Silva ◽  
W.M. Nascimento ◽  
C.V.A. Souza
Keyword(s):  
Seed Germination ◽  
High Temperatures ◽  
Selection Of

Stability of Accelerators as Affected by High Processing Temperatures

1949 ◽  
Vol 22 (2) ◽  
pp. 555-559
Author(s):  
F. L. Holbrook ◽  
T. H. Fitzgerald
Keyword(s):  
High Temperatures ◽  
High Speed ◽  
Careful Consideration ◽  
Processing Temperature ◽  
Thiazole Derivatives ◽  
Proper Selection ◽  
Effective Activity ◽  
High Processing ◽  
Rubber Accelerators ◽  
Selection Of

Abstract In high-speed Banbury mixing, sufficiently high temperatures may be generated at least to partially damage some rubber accelerators and decrease their effective activity. Thus, at a processing temperature of 360° F, the following stability relationships hold. 1. Thiazoles, thiazole derivatives, and activated thiazoles show little loss of activity. 2. Thiurams and dithiocarbamates may be severely affected. 3. Guanidines, as represented by diphenylguanidine, are only moderately affected. 4. Aldehydeamines range in stability from moderate to good. This effect of high temperature on accelerator stability may be considered as constituting a processing hazard. The proper selection of accelerators and the careful consideration of any processing changes which may significantly increase temperature minimize the danger and allow avoidance of harmful results. The fact that some accelerators are relatively unstable at high temperatures does not preclude their use. It is simply necessary to incorporate these materials into the mix at a sufficiently low temperature, such as that at which it is normally considered safe to add sulfur.

scholarly journals Germination under High Temperatures of Maize Adapted to the Cerrado of Tocantins

2019 ◽  
pp. 1-10
Author(s):  
Kassya Silveira Barbosa ◽  
Luiz Felipe Soares Aguiar ◽  
Susana Cristine Siebeneichler ◽  
Aurélio Vaz de Melo ◽  
Adriano Silveira Barbosa ◽  
...  
Keyword(s):  
High Temperatures ◽  
Cold Test ◽  
Dry Mass ◽  
Maximum Temperature ◽  
Tukey Test ◽  
Maize Seeds ◽  
Seedling Length ◽  
Superior Genotypes ◽  
Root Axis ◽  
Selection Of

The purpose of this study was to evaluate the response of germination and vigor in maize seeds in laboratory conditions, exposure to high temperatures, in order to highlight the most adaptable genotypes at these temperatures. Were supplied three cultivars of the PIONEIRA LTDA. (PIONEIRA HS-9, PIONEIRA HS-14i, PIONEIRA ROBUSTO), to perform the experiment, in addition to the commercial cultivar BRS 3040. After the selection of superior genotypes, were performed at temperatures of 25 reviews, 30, 35 and 40ºC, these being: germination, first count, seedling dry mass and speed index of the emergence of seedlings. At the temperature of 25°C were made the cold test and seedling length, shoot and root axis. The results were submitted to analysis of variance, comparison of averages by Tukey test, to three genotypes and regression analysis to high school, to three genotypes and the witness commercial. Whereas the maximum temperature of 35°C tested, one could observe that the PIONEIRA HS-6 genotype presented the best adaptation to high temperatures. The PIONEIRA ROBUSTO genotype was more adapted to high temperatures whereas as the highest temperature of 40°C. The BRS 3040 was not adapted to the high temperatures in relation to genotypes produced under conditions of high temperatures of the Cerrado.

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