SOME CHARACTERISTICS OF PROTEINASES OF AN OBLIGATELY PSYCHROPHILIC RED-PIGMENTED BACTERIUM AND OF SERRATIA MARCESCENS

1963 ◽  
Vol 9 (6) ◽  
pp. 871-877 ◽  
Author(s):  
I. J. Mcdonald ◽  
Alice K. Chambers
Keyword(s):  
High Temperature ◽  
Serratia Marcescens ◽  
Proteolytic Enzymes ◽  
Enzyme System ◽  
Heat Inactivation ◽  
Psychrophilic Bacterium ◽  
Temperature Characteristics ◽  
Optimum Activity ◽  
Cold Tolerant ◽  
Temperature Optima

Supernatants of cultures of a red-pigmented psychrophilic bacterium and of a strain of Serratia marcescens contained proteolytic enzymes that hydrolyzed casein,/3-IactogIobuIin and haemoglobin. With casein as the substrate, optimum activity of the enzyme system of the psychrophile was at pH 10 and at 40-45 °C; optimum activity of the 5. marcescens enzyme system was at pH 9.0 and 45° C. Calcium stimulated activity and protected proteinases of both organisms against heat inactivation. Proteinases of both organisms possess high temperature characteristics and relatively high temperature optima. The results indicated that the proteinase system of the red psychrophile differs from those of some other cold-tolerant bacteria {Cytophaga and Pseudomonas) and that it is similar to but not identical with the proteinase system of Serratia marcescens.

scholarly journals High-temperature optima phosphatases from the cold-tolerant Arctic fungus Penicillium citrinum

2012 ◽  
Vol 31 (1) ◽  
pp. 11105 ◽  
Author(s):  
Puja Gawas-Sakhalkar ◽  
ShivMohan Singh ◽  
Simantini Naik ◽  
Rasik Ravindra
Keyword(s):  
High Temperature ◽  
Penicillium Citrinum ◽  
Cold Tolerant ◽  
Temperature Optima

scholarly journals 1.2-kV Vertical GaN Fin-JFETs: High-Temperature Characteristics and Avalanche Capability

2021 ◽  
Vol 68 (4) ◽  
pp. 2025-2032
Author(s):  
Jingcun Liu ◽  
Ming Xiao ◽  
Ruizhe Zhang ◽  
Subhash Pidaparthi ◽  
Hao Cui ◽  
...  
Keyword(s):  
High Temperature ◽  
Temperature Characteristics

Evaluation of screen-printable type S (Pt-PtRh) thermocouples on different ceramic substrates

2016 ◽  
Vol 2016 (CICMT) ◽  
pp. 000053-000057
Author(s):  
Jaroslaw Kita ◽  
Sven Wiegärtner ◽  
Alistair Prince ◽  
Peter Weigand ◽  
Ralf Moos
Keyword(s):  
High Temperature ◽  
Thick Film ◽  
Screen Printing ◽  
Temperature Sensors ◽  
Electrical Characteristics ◽  
Buried Structures ◽  
Ceramic Substrates ◽  
Temperature Characteristics ◽  
Film Type ◽  
Thick Film Technology

Abstract The application of thermocouples as temperature sensors has been well known and has already been established for many years. However, for classical thick-film technology using screen-printing and firing, no standardized solutions exist. The here-presented newly developed PtRh thick-film compositions (90% Pt,10% Rh) allows to construct thick-film type S thermocouples (Pt/PtRh), following the IEC temperature characteristics. They can be fired in air, and therefore can be easily integrated into existing thick-film components and devices. In an earlier study, the new Pt-Rh composition was successfully tested on alumina substrates. Their electrical characteristics is equal with classical wire type S thermocouples. This study continues the investigations of thick-film thermocouples. We tested the newly developed pastes for high temperature applications on alumina substrates and evaluated the application of the new screen-printable type S thermocouples on LTCC ceramics. Three possible configurations were investigated: deposited on already fired LTCC substrates (post-fired), screen-printed and co-fired with LTCC tapes on the top surface as well as as buried structures. The paper presents the results of our evaluation and discusses further possible applications.

scholarly journals Improvement of High-Temperature Characteristics of the Sintered Nickel Positive Electrode for an Alkaline Storage Battery

2003 ◽  
Vol 71 (8) ◽  
pp. 686-690 ◽  
Author(s):  
Katsuhiko SHINYAMA ◽  
Yoshifumi MAGARI ◽  
Atsuhiro FUNAHASHI ◽  
Toshiyuki NOHMA ◽  
Ikuo YONEZU
Keyword(s):  
High Temperature ◽  
Positive Electrode ◽  
Storage Battery ◽  
Temperature Characteristics

A sintering burden blending model based on one-step optimization method and high-temperature characteristics of iron ore

2019 ◽  
Vol 116 (2) ◽  
pp. 211
Author(s):  
Shengli Wu ◽  
Xiaobo Zhai ◽  
Tiankai Song
Keyword(s):  
High Temperature ◽  
Iron Ore ◽  
Intelligent System ◽  
Quantitative Relationship ◽  
High Strength ◽  
Optimization Method ◽  
Temperature Characteristics ◽  
Positive Effects ◽  
One Step ◽  
The One

A sintering burden blending model is an intelligent system used to obtain the optimal blending proportions of burdens with minimal sintering burden cost. In this study, micro-sintering and sinter pot tests were first carried out to clarify the quantitative relationship between the shatter index (SI) of the sinter and high-temperature characteristics (HTCs) of the ore blends. The result shows that the lowest assimilation temperature (LAT) plays a dual role in SI, whereas the index of liquid phase fluidity (ILF) and compressive strength of the bonding phase (CSB) have positive effects on SI. The effect of the ILF is the largest. Based on the one-step optimization method, suitable ranges of room-temperature characteristics (RTCs) of ore blends, obtained relationship between sinter strength and HTCs of ore blends, sintering theory, and bisection and simplex algorithms, the proposed sintering burden blending model is established. The validation for the model shows that it is effective at utilizing iron ore resources, maintaining high strength of the sinter, while reducing burden costs.

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