From the organism utilization new technology research symposium ( the fourth ). Decomposition of tetrachloroethylene by the soil enrichment culture system.

Metabolism of side chain and ring 14C-labelled carbaryl and carbofuran in a mineral salts medium by soil-enrichment cultures and a Bacillus sp. was studied. A change in the substrate of the medium from carbaryl to carbofuran led to a marked shift in the dominant bacterium from Bacillus sp. to Arthrobacter sp. although carbaryl-enrichment culture was the primary inoculum in both media. Hydrolysis was the major route of microbial degradation of both carbamate insecticides. During carbaryl degradation by enrichment cultures and Bacillus sp., 1-naphthol and 1,4-naphthoquinone accumulated in the medium. Of the three metabolites formed from carbofuran, 3-hydroxycarbofuran and 3-ketocarbofuran were further metabolized rapidly, while carbofuran phenol was resistant to further degradation. Evolution of 14CO2 and other gaseous 14C-labelled products from both side chain and ring labels was negligible. This and slow degradation of the hydrolysis products led to significant accumulation of 14C in the medium even after prolonged incubation.

Download Full-text

Striving for a Safer and More Ergonomic Workplace: Acceptability and Human Factors Related to the Adoption of AR/VR Glasses in Industry 4.0

Smart Cities ◽

10.3390/smartcities3020016 ◽

2020 ◽

Vol 3 (2) ◽

pp. 289-307

Author(s):

Cecilia Sik Lanyi ◽

John Dermott Alexander Withers

Keyword(s):

Industry 4.0 ◽

New Technology ◽

Background Information ◽

Smart Devices ◽

Technology Research ◽

Research Papers ◽

Key Technology ◽

Digital World ◽

Industrial Use ◽

Research Questions

The word smart is very popular these days, as a result of nearly everything being digital today. Background information: In this digital world, everything is interconnected by smart devices. The driving force behind this is today’s Industry 4.0 environment, which is affected by many factors, including the ergonomic and safe design of new technology, ensuring the safety of factory operators, whilst increasing productivity and profits. The authors answer the following research questions: Are AR/VR systems or devices proposed for industrial use capable of meeting the needs of the industry (including sustainability)? Are these AR/VR devices designed to ensure easy use and efficient training of factory operators? Do the proposals of the reviewed research papers place sufficient emphasis on creating ergonomic workplaces? These publications were categorized into three subcategories based on the used key technology, research or application area, and their main purposes. Conclusion: Virtual reality, augmented reality, and IoT are becoming increasingly more suitable for industrial use, despite facing scrutiny and criticism.

Download Full-text

Using PLS path modeling in new technology research: updated guidelines

Industrial Management & Data Systems ◽

10.1108/imds-09-2015-0382 ◽

2016 ◽

Vol 116 (1) ◽

pp. 2-20 ◽

Cited By ~ 1006

Author(s):

Jörg Henseler ◽

Geoffrey Hubona ◽

Pauline Ash Ray

Keyword(s):

Structural Equation ◽

Design Methodology ◽

New Technology ◽

Equation Modeling ◽

Technology Research ◽

Path Modeling ◽

Statistical Tool ◽

New Developments ◽

Content Type ◽

Pls Path Modeling

Purpose – Partial least squares (PLS) path modeling is a variance-based structural equation modeling (SEM) technique that is widely applied in business and social sciences. Its ability to model composites and factors makes it a formidable statistical tool for new technology research. Recent reviews, discussions, and developments have led to substantial changes in the understanding and use of PLS. The paper aims to discuss these issues. Design/methodology/approach – This paper aggregates new insights and offers a fresh look at PLS path modeling. It presents new developments, such as consistent PLS, confirmatory composite analysis, and the heterotrait-monotrait ratio of correlations. Findings – PLS path modeling is the method of choice if a SEM contains both factors and composites. Novel tests of exact fit make a confirmatory use of PLS path modeling possible. Originality/value – This paper provides updated guidelines of how to use PLS and how to report and interpret its results.

Download Full-text

Soil enrichment for the isolation of sporangial subgroup II Bacillus species, and observations concerning a coil-forming member of this group

Canadian Journal of Microbiology ◽

10.1139/m72-160 ◽

1972 ◽

Vol 18 (7) ◽

pp. 1031-1038

Author(s):

R. T. Wood ◽

L. E. Casida Jr.

Keyword(s):

Ph Value ◽

Enrichment Culture ◽

Divalent Cations ◽

Soil Extract ◽

Bacillus Species ◽

Biochemical Tests ◽

Soil Medium ◽

Soil Enrichment ◽

Subgroup Ii ◽

Characteristic Features

Enrichment culture procedures are described which allow recovery from soil of mainly sporangial subgroup II Bacillus species, subgroup I plus subgroup II, or the latter plus a coil-forming member of subgroup II. After isolation, the coil-forming type grew normally and sporulated extensively only on agarized soil medium. Growth was normal on soil extract agar but sporulation was less extensive. Limited sporulation occurred when divalent cations were added to more conventional media. Normal vegetative growth occurred on other media investigated only when the pH value was held within relatively narrow limits. The presence of carbohydrate in agar media caused partial growth inhibition, a lack of catalase activity, and the formation of very long coiled cells plus pleomorphic cells, whereas overt cell lysis occurred in vigorously shaken broth cultures. These responses possibly reflect an unbalanced growth condition caused by growth at pH extremes, and not by carbohydrate per se. The characteristic features that set the coil-forming bacilli apart from other subgroup II Bacillus species were shown to be (1) their inability to grow at pH values below 6.5, (2) their inability to ferment carbohydrates, (3) their high oxygen requirement for growth, and (4) their ability to reduce thiosulfate to H2S. In addition, these bacilli can be distinguished from closely related established species by other biochemical tests.

Download Full-text

Overview of Technological Capacity of Vietnamese Enterprises in the Context of the 4th Industrial Revolution

VNU Journal of Science Policy and Management Studies ◽

10.25073/2588-1116/vnupam.4195 ◽

2019 ◽

Author(s):

Nguyen Hoang Hai ◽

Tran Tien Anh

Keyword(s):

Research And Development ◽

Industrial Revolution ◽

Technology Innovation ◽

New Technology ◽

Limited Resources ◽

Direct Impact ◽

Technology Research ◽

Comprehensive View ◽

Technological Capacity ◽

The Government

The article provides a comprehensive view of assessing technological capacity of enterprises in the context of the 4th industrial revolution, through evaluating the following criteria: capacity of technology exploitation–use–operation; capacity of technology innovation and upgrade, and capacity of new technology research and development. Limited resources have a direct impact on the capacity of technology exploitation–operation. The enterprises themselves still faces many difficulties, so the technology innovation and upgrade activities are still left open. Besides, the level of capacity of new technology research and development shows that Vietnamese enterprises have not yet achieved many achievements despite the attention, investment and support policies from the Government.

Download Full-text