A Statistically Designed Study of Atmospheric Corrosion Simulating Automotive Field Conditions Using a High Performance Climate Chamber - Status Report of Work in Progress

1991 ◽  
Author(s):  
Mats Ström ◽  
Gunnar Ström ◽  
Wim J. van Ooij ◽  
Ashok Sabata ◽  
Ricole A. Edwards ◽  
...  
Keyword(s):  
High Performance ◽  
Atmospheric Corrosion ◽  
Field Conditions ◽  
Status Report ◽  
Climate Chamber ◽  
Work In Progress

scholarly journals High-Performance Workwear for Coal Miners in Northern China: Design and Performance Evaluation

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Ying Ke ◽  
Qing Zheng ◽  
Faming Wang ◽  
Min Wang ◽  
Yi Wang
Keyword(s):  
Performance Evaluation ◽  
Thermal Comfort ◽  
High Performance ◽  
Northern China ◽  
Coal Miners ◽  
Climate Chamber ◽  
Local Skin ◽  
Worker Performance ◽  
And Performance ◽  
Skin Temperatures

Abstract The design of workwear has significant effects on worker performance. However, the current workwear for coal miners in Northern China is poor in fitness and thermal comfort. In this study, new workwear (NEW) for coal miners was developed with the design features providing better cold protection and movement comfort performance, as compared with a commonly worn workwear (CON). To evaluate the effectiveness of NEW, we conducted human trials which were performed using simulated work movements (i.e., sitting, shoveling, squatting, and crawling) in a climate chamber (10°C, 75% RH). Physiological measurements and perceptual responses were obtained. The results demonstrated that the local skin temperatures at chest, scapula, thigh, and calf; mean skin temperatures,; and thermal comfort in NEW were significantly higher than those in CON. NEW also exerted an improvement in enhancing movement comfort. We conclude that NEW could meet well with the cold protective and mobility requirements.

Stability of cabergoline in fox baits in laboratory and field conditions

2007 ◽  
Vol 34 (3) ◽  
pp. 239 ◽  
Author(s):  
Stuart McLean ◽  
Susan Brandon ◽  
Roger Kirkwood
Keyword(s):  
High Performance ◽  
Acetic Acid Solution ◽  
Hydrolysis Product ◽  
Fertility Control ◽  
Field Trials ◽  
Control Agent ◽  
Field Conditions ◽  
Dry Conditions ◽  
The Stability ◽  
Fox Control

Cabergoline is a potent inhibitor of prolactin release and a potential fertility control agent for foxes. To understand how cabergoline could behave in baits deployed for fox control, we conducted laboratory and field trials to investigate the stability of cabergoline when (1) in solution, (2) injected into a bait (deep-fried liver and Foxoff®) and (3) exposed to a range of environmental conditions, including burial. Cabergoline, dissolved in a 1% acetic acid solution, and its carboxylic acid hydrolysis product can be assayed using high-performance liquid chromatography. When stored at 4°C and at room temperature, cabergoline in solution was stable for up to 36 days. When stored under cool (≤15°C), dry conditions, cabergoline (800 µg) in commercial Foxoff® and deep-fried ox-liver baits was stable for 28 and 7 days, respectively; stability was reduced by increases in temperature (tested up to 40°C) and humidity. Recovery of cabergoline from buried baits exposed to a range of field conditions decreased rapidly in the first week, but after 56 days remained detectable at levels of 6–22% of the injected amounts. This study has important implications for baiting campaigns that use cabergoline for fox control.

Impact of mixing and curing temperatures on fresh and hardened states properties of UHPC

2021 ◽  
Author(s):  
Cédric Androuet ◽  
Olivier Deaux ◽  
Jean-Philippe Charron
Keyword(s):  
High Performance ◽  
Poisson Ratio ◽  
Mass Density ◽  
Field Conditions ◽  
Air Content ◽  
High Performance Fiber ◽  
Hardened State ◽  
Normal Strength ◽  
Compressive And Flexural Strengths ◽  
The Impact

New Canadian and American standards for concrete and bridges now provides guidelines for the design, production, curing, material characterization and installation of Ultra-High Performance Fiber Reinforced Concretes (named UHPFRC or UHPC) on structures. However, some technical aspects require more research since fundamental knowledge about UHPC is not as complete as for normal strength concretes (NSC). Among these aspects, knowledge on the properties of UHPC produced under field conditions is scarce. The main goal of the research project was to evaluate the fresh state properties (slump flow, air content, mass density, hydration heat) and hardened state properties (elastic modulus, Poisson ratio, compressive and flexural strengths) of a UHPC subjected to various mixing temperatures (10, 20 and 30°C) and curing temperatures (10, 23 and 35°C) encountered in field conditions. The impact of mixing and curing temperatures on each property is discussed and practical information is provided to help engineers planning the UHPC curing duration and formwork stripping.

scholarly journals DESIGNING A MULTI-PRECISION NUMBER THEORY LIBRARY

2014 ◽  
pp. 44-48
Author(s):  
Catalin Hritcu ◽  
Iulian Goriac ◽  
Raluca Mihaela Gordan ◽  
Elena Erbiceanu
Keyword(s):  
Number Theory ◽  
Memory Management ◽  
High Performance ◽  
Number Representation ◽  
Algorithm Selection ◽  
Basic Principles ◽  
Work In Progress ◽  
Large Numbers

The aim of this paper is twofold. First, we present the basic principles and point out the main difficulties in writing a library supporting operations with arbitrarily large numbers. Aspects such as library structure, number representation, algorithm selection, memory management, etc., are discussed and exemplified on the most efficient libraries developed. Secondly, we present work in progress regarding the design of a new multi-precision library, MpNT. Comparisons between our library and the existing ones show that it achieves high performance.

scholarly journals Towards Exascale: High Performance Visualization and Analytics -Project Status Report

2012 ◽  
Author(s):  
E. Wes Bethel ◽  
Hank Childs ◽  
Mark Howison ◽  
Hari Krishnan ◽  
Burlen Loring ◽  
...  
Keyword(s):  
High Performance ◽  
Status Report ◽  
Performance Visualization
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