Influence of the heat treatment on the color of ground pepper (Capsicum annuum)

Red pepper (Capsicum annuum L.) is one of the most important vegetables in the world. The main ground pepper quality attributes are extractable color, surface color, qualitative and quantitative carotenoid content. In this work, the influence of heat treatment on ground pepper quality was investigated. Microbiological status was examined in non-sterilized and sterilized ground pepper. Color changes were assessed by measuring the extractable color (ASTA) and surface color, using a photocolorimeter. The obtained results showed that at the end of experiment, non-sterilized samples had higher color values in comparison to the sterilized ones. Also, color deterioration was heightened at room temperature.

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Post-cure heat treatments influence on mechanical and optical properties of resin composites

Brazilian Dental Journal ◽

10.1590/0103-6440202104333 ◽

2021 ◽

Vol 32 (4) ◽

pp. 96-105

Author(s):

Vitor de Oliveira Baldo ◽

Marlus da Silva Pedrosa ◽

Igor Studart Medeiros

Keyword(s):

Heat Treatment ◽

Optical Properties ◽

Room Temperature ◽

Red Wine ◽

Contrast Ratio ◽

Degree Of Conversion ◽

Control Group ◽

Resin Composites ◽

Color Changes ◽

Knoop Microhardness

Abstract This study evaluated the effect of post-cure heat treatment (PCHT) on the Knoop microhardness (KHN), degree of conversion (DC), color changes, and contrast ratio (CR) of four resin composites (RCs): Z100 (3M ESPE), Z350 XT (3M ESPE), Estelite Omega (Tokuyama) and Empress Direct (Ivoclar Vivadent). Specimens (12 × 1 mm) were prepared for each material (n = 10 / group). After curing, samples were subjected to PCHT for 10 min at 100°C or 170°C. Control group was maintained at room temperature (24°C) for the same time. The DC was analyzed by FT-NIR immediately and 24 h after the PCHT (n = 3 / group). KHN was analyzed 24 h after PCHT (n = 10 / group). According to CIEDE2000 (∆E00), color measurements were obtained immediately after curing, five minutes after PCHT, and after seven days of storage in water, coffee, and red wine. Data were analyzed by One and Two-Way ANOVA (p < 0.05). Z100, Z350, and Estelite Omega showed increases in KHN with increased temperature (p < 0.05). PCHT at 100°C and 170°C led to a higher DC of all RCs (p < 0.05). Initially, the PCHT lead to increased ∆E00 values (p < 0.05), which was decreased after immersion in coffee and wine (p < 0.05). Considering the effect of PCHT and staining solutions, lower color changes were observed in the thermally treated specimens (p < 0.05). Taken collectively, the results suggest the PCHT as an economical and practical alternative to enhance direct RC's properties in direct-indirect and indirect restorations.

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Drowning in negativism, self-hate, doubt, madness: Linguistic insights into Sylvia Plath’s experience of depression

Communication & Medicine ◽

10.1558/cam.v11i1.18478 ◽

2015 ◽

Vol 11 (1) ◽

pp. 41-54 ◽

Cited By ~ 1

Author(s):

Zsófia Demjén

Keyword(s):

Lived Experience ◽

Medical Humanities ◽

Sylvia Plath ◽

Individual Experience ◽

Qualitative And Quantitative ◽

The World ◽

The Individual ◽

Linguistic Methods ◽

Linguistic Approach

This paper demonstrates how a range of linguistic methods can be harnessed in pursuit of a deeper understanding of the ‘lived experience’ of psychological disorders. It argues that such methods should be applied more in medical contexts, especially in medical humanities. Key extracts from The Unabridged Journals of Sylvia Plath are examined, as a case study of the experience of depression. Combinations of qualitative and quantitative linguistic methods, and inter- and intra-textual comparisons are used to consider distinctive patterns in the use of metaphor, personal pronouns and (the semantics of) verbs, as well as other relevant aspects of language. Qualitative techniques provide in-depth insights, while quantitative corpus methods make the analyses more robust and ensure the breadth necessary to gain insights into the individual experience. Depression emerges as a highly complex and sometimes potentially contradictory experience for Plath, involving both a sense of apathy and inner turmoil. It involves a sense of a split self, trapped in a state that one cannot overcome, and intense self-focus, a turning in on oneself and a view of the world that is both more negative and more polarized than the norm. It is argued that a linguistic approach is useful beyond this specific case.

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The Phase Analysis of Panzhihua Vanadic Titanomagnetite Ore before and after Heat Treatment

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.807-809.2110 ◽

2013 ◽

Vol 807-809 ◽

pp. 2110-2114

Author(s):

Shu Quan Wan ◽

De Jun Lan ◽

Hong Bo Han ◽

Cai Long Zhou

Keyword(s):

Heat Treatment ◽

Phase Analysis ◽

Room Temperature ◽

Before And After

The phases of Panzhihua vanadic titanomagnetite ore were studied by using XRF and XRD. XRF results show that the original ore mainly contain the elements, Fe, Ti, Si, Ca, Al, S, Mg, P, Mn, V and etc. XRD results show that the main substances in original ore were Fe3O4 and FeTiO3, and the minor phases cannot be clearly studied by XRD. After heat treatment for 10h at 573K in atmospheric ambient, the phases of the ore have been slightly changed. And after heat treatment for 10h at 1073K in atmospheric ambient, then cooled for 48h to room temperature, the main phases of the ore have almost been changed to Fe2O3 and Fe2TiO5.

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Comparison of the color and weight change in Paulownia tomentosa and Pinus koraiensis wood heat-treated in hot oil and hot air

BioResources ◽

10.15376/biores.16.3.5574-5585 ◽

2021 ◽

Vol 16 (3) ◽

pp. 5574-5585

Author(s):

Intan Fajar Suri ◽

Jong Ho Kim ◽

Byantara Darsan Purusatama ◽

Go Un Yang ◽

Denni Prasetia ◽

...

Keyword(s):

Heat Treatment ◽

Color Change ◽

Treated Wood ◽

Pinus Koraiensis ◽

Weight Changes ◽

Paulownia Tomentosa ◽

Wood Color ◽

Color Changes ◽

Hot Air ◽

Heat Treated

Color changes were tested and compared for heat-treated Paulownia tomentosa and Pinus koraiensis wood treated with hot oil or hot air for further utilization of these species. Hot oil and hot air treatments were conducted at 180, 200, and 220 °C for 1, 2, and 3 h. Heat-treated wood color changes were determined using the CIE-Lab color system. Weight changes of the wood before and after heat treatment were also determined. The weight of the oil heat-treated wood increased considerably but it decreased in air heat-treated wood. The oil heat-treated samples showed a greater decrease in lightness (L*) than air heat-treated samples. A significant change in L* was observed in Paulownia tomentosa. The red/green chromaticity (a*) of both wood samples increased at 180 and 200 °C and slightly decreased at 220 °C. The yellow/blue chromaticity (b*) in both wood samples increased at 180 °C, but it rapidly decreased with increasing treatment durations at 200 and 220 °C. The overall color change (ΔE*) in both heat treatments increased with increasing temperature, being higher in Paulownia tomentosa than in Pinus koraiensis. In conclusion, oil heat treatment reduced treatment duration and was a more effective method than air heat treatment in improving wood color.

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Influence of Heat Treatment on Microstructure and Mechanical Properties of Selective Laser Melted TiAl6V4 Alloy

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.284.615 ◽

2018 ◽

Vol 284 ◽

pp. 615-620 ◽

Cited By ~ 2

Author(s):

R.M. Baitimerov ◽

P.A. Lykov ◽

L.V. Radionova

Keyword(s):

Mechanical Properties ◽

Heat Treatment ◽

Selective Laser Melting ◽

Room Temperature ◽

Base Alloy ◽

Tensile Tests ◽

Heat Treatments ◽

Laser Melting ◽

Microstructure And Mechanical Properties ◽

Treatment Procedures

TiAl6V4 titanium base alloy is widely used in aerospace and medical industries. Specimens for tensile tests from TiAl6V4 with porosity less than 0.5% was fabricated by selective laser melting (SLM). Specimens were treated using two heat treatment procedures, third batch of specimens was tested in as-fabricated statement after machining. Tensile tests were carried out at room temperature. Microstructure and mechanical properties of SLM fabricated TiAl6V4 after different heat treatments were investigated.

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Strength of Commercial Aluminum Alloys after Equal Channel Angular Pressing and Post-ECAP Processing

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.114.91 ◽

2006 ◽

Vol 114 ◽

pp. 91-96 ◽

Cited By ~ 10

Author(s):

Maxim Yu. Murashkin ◽

M.V. Markushev ◽

Julia Ivanisenko ◽

Ruslan Valiev

Keyword(s):

Mechanical Properties ◽

Heat Treatment ◽

Tensile Strength ◽

Aluminum Alloys ◽

Ultimate Tensile Strength ◽

Equal Channel Angular Pressing ◽

Room Temperature ◽

Solution Treatment ◽

Ecap Processing ◽

Angular Pressing

The effects of equal channel angular pressing (ECAP), further heat treatment and rolling on the structure and room temperature mechanical properties of the commercial aluminum alloys 6061 (Al-0.9Mg-0.7Si) and 1560 (Al-6.5Mg-0.6Mn) were investigated. It has been shown that the strength of the alloys after ECAP is higher than that achieved after conventional processing. Prior ECAP solution treatment and post-ECAP ageing can additionally increase the strength of the 6061 alloy. Under optimal ageing conditions a yield strength (YS) of 434 MPa and am ultimate tensile strength (UTS) of 470 MPa were obtained for the alloy. Additional cold rolling leads to a YS and UTS of 475 and 500 MPa with 8% elongation. It was found that the post-ECAP isothermal rolling of the 1560 alloy resulted in the formation of a nano-fibred structure and a tensile strength (YS = 540 MPa and UTS = 635 MPa) that has never previously been observed in commercial non-heat treatable alloys.

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Fusarium graminearum Colors and Deoxynivalenol Synthesis at Different Water Activity

Foods ◽

10.3390/foods8010007 ◽

2018 ◽

Vol 8 (1) ◽

pp. 7 ◽

Cited By ~ 3

Author(s):

Edgar Cambaza ◽

Shigenobu Koseki ◽

Shuso Kawamura

Keyword(s):

Fusarium Graminearum ◽

Color Change ◽

High Growth ◽

Cereal Crops ◽

Color Analysis ◽

Surface Color ◽

Color Changes ◽

White Mycelium ◽

Imagej Software ◽

Inverse Proportionality

Deoxynivalenol (DON) is a well-known mycotoxin, responsible for outbreaks of gastrointestinal disorders in Japan. Fusarium graminearum, a parasite of cereal crops, produces this toxin and this is one of the reasons why it is important to understand its metabolism. It is possible to predict the mold’s color change and the quantity of DON synthesized throughout its lifecycle. Furthermore, aw has been found to affect the amount of DON. This study aimed to analyze the potential of F. graminearum surface color as a predictor of DON concentration at aw = 0.94, 0.97, and 0.99. Thus, 36 specimens were incubated at 25 °C, 12 at each aw. After 4, 8, 12, and 16 days, three specimens from each aw were collected for color analysis and DON quantification. For color analysis, photos were taken and red, green and blue (RGB) channels were measured on ImageJ software. DON was quantified through liquid chromatography (HPLC). Color changes were only observed at aw = 0.99 because at lower aw the molds presented high growth of white mycelium. Yet, DON increased in all cases. It was only possible to relate the colors with DON concentration at aw = 0.99, where they presented inverse proportionality.

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The Role of Social Media in Learning Physics: Teacher and Student Perceptions

Jurnal Pembelajaran Fisika ◽

10.23960/jpf.v8.n2.202004 ◽

2019 ◽

Vol 8 (2) ◽

pp. 159-166

Author(s):

Rika Dwi Kurniati ◽

◽

Doni Andra ◽

I Wayan Distrik ◽

◽

...

Keyword(s):

Social Media ◽

Student Perceptions ◽

Mixed Method ◽

Physics Learning ◽

Qualitative And Quantitative ◽

Physics Teacher ◽

The World ◽

Teacher And Student Perceptions ◽

Preliminary Study

This study aims to determine the role of social media in learning. We know that today, social media has an indispensable role in the learning process. In addition, social media has made it a smaller world through social media so that people from anywhere in the world can interact without being limited by distance and time. This study used a mixed-method consisting of qualitative and quantitative data. This research involved 308 students in Lampung province. The results of the research conducted stated that 65% of students used smartphones in learning. 73.2% of students stated that the application that is often opened is social media. 87.2% stated that the most frequently accessed social media is chatting media. 48.2% of students prefer playing on social media for learning physics. 72.3% of students stated that they prefer to discuss through chatting media. Based on the results of the preliminary study, the role of social media is very active, 48% of students stated that they use social media for learning discussions. . 43% of teachers stated that they always use social media to support learning. Keywords: social media, physics learning, smartphone

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THE CURRENT STATE OF PROJECT RISK ASSESSMENT AND EDUCATION NEEDS IN PROJECT RISK MANAGEMENT

CBU International Conference Proceedings ◽

10.12955/cbup.v7.1363 ◽

2019 ◽

Vol 7 ◽

Author(s):

Matej Masár ◽

Mária Hudáková

Keyword(s):

Risk Assessment ◽

Risk Management ◽

Project Managers ◽

Project Risk Management ◽

Project Risk ◽

Qualitative And Quantitative ◽

Current State ◽

The World ◽

Project Risks ◽

Project Risk Assessment

Current trends show that education in the field of project risk management is a very actual topic. Long - term projects, which was realized in 2018, was mainly focused on R&D across the world. Short - term projects, was focused on innovation and improve manufacturing processes. Many projects failed because project managers did not manage project risks. Project managers have less knowledge and skills on how to effectively manage project risks, especially risks in the planning phase of projects. The main aim of this article is to analyze the current state of usage project risk assessment across the world, based on own empirical research, which was provided, by authors in 2018 and 2019 (mainly level of usage project risk management methods, experience and level of education). The research focused on analyzing the current state of project risk assessment among continents. The authors focused on the average level of use qualitative and quantitative project risk analysis by project managers, level of project risk management experience by project managers and complexity of learning in using of qualitative and quantitative project risk management methods and tools. Some recommendation were established to educate project managers in the field of project risk management.

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