scholarly journals Comparison of Ultrasound Type and Working Parameters on the Reduction of Four Higher Alcohols and the Main Phenolic Compounds

2021 ◽  
Vol 14 (1) ◽  
pp. 417
Author(s):  
Qingan Zhang ◽  
Hongrong Zheng ◽  
Shuang Cheng ◽  
Bowen Xu ◽  
Penghui Guo
Keyword(s):  
Phenolic Compounds ◽  
Red Wine ◽  
Comprehensive Evaluation ◽  
Higher Alcohols ◽  
Single Factor ◽  
Color Properties ◽  
Color Parameters ◽  
Ultrasound Bath ◽  
Working Parameters ◽  
Better Than

In this paper, studies were conducted by a series of single-factor experiments to investigate the effects of ultrasound types and working parameters on the higher alcohols (HA), phenolic compounds, and color properties of red wine, so as to highlight the importance of the comprehensive consideration on its application. The results indicate that ultrasound devices and working parameters do have some definite influences on the HA of wine; moreover, the ultrasound bath (SB-500DTY) is better than the SCIENTZ-950E and the KQ-300VDE. With the SB-500DTY employed to further investigate its effects on phenols and color properties other than on HA, unexpectedly, some variations of color parameters are opposite to the results ever obtained from other ultrasound conditions. In summary, all these results suggest that both the ultrasound type and parameters should be fully considered or neutralized so as to have a comprehensive evaluation about its application, instead of some contradictory results.

Tire Treadwear — A Comprehensive Evaluation of the Factors: Generic Type, Aspect Ratio, Tread Pattern, and Tread Composition Part III: Results of Supplementary and UTQG Treadwear Test Series

1986 ◽  
Vol 14 (4) ◽  
pp. 235-263
Author(s):  
A. G. Veith
Keyword(s):  
Carbon Black ◽  
Comprehensive Evaluation ◽  
Work Intensity ◽  
Generic Type ◽  
Aspect Ratios ◽  
Index Variation ◽  
Primary Determinant ◽  
Severity Levels ◽  
High Test ◽  
Better Than

Abstract The effect of tread compound variation on tire treadwear was studied using bias and radial tires of two aspect ratios. Compound variations included types of rubber and carbon black as well as the levels of carbon black, process oil, and curatives. At low to moderate test severity, SBR and an SBR/BR blend performed better than NR while at high test severity NR and SBR were better than the SBR/BR blend. The SBR/BR blend was the best at low severity testing. Higher structure and higher surface area carbon black gave improved treadwear at all severity levels. The concept of a “frictional work intensity” as the primary determinant of treadwear index variation with test severity is proposed. Some factors which influence frictional work intensity are discussed.

Concentration of roselle (Hibiscus sabdariffa L) and sucrose in beverages: Effects on physicochemical characteristics and acceptance

2020 ◽  
pp. 108201322097379
Author(s):  
Jahir Antonio Barajas-Ramírez ◽  
Ana Luisa Gutiérrez-Salomón ◽  
Sonia Guadalupe Sáyago-Ayerdi
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
High Intensity ◽  
Physicochemical Characteristics ◽  
Hibiscus Sabdariffa ◽  
Color Parameters ◽  
Low Intensity ◽  
Red Color

The calyces of roselle ( Hibiscus sabdariffa L.) are used to make a refreshing drink with high content of anthocyanins and other phenolic compounds, although the process for obtaining the beverage is not standardized. In this research it was determined physicochemical characteristics, total soluble polyphenols content, antioxidant activity and acceptance for beverages prepared by decoction at four concentrations of calyces in water (1.0, 2.5, 5.0 and 10.0%) and two concentrations of sucrose (11 and 16%). Color parameters in beverages permitted to describe them as red, which turned darker as the content of hibiscus increased. Total soluble polyphenols content and antioxidant activity were directly correlated with content of calyces in beverages and inversely correlated with pH, which means that beverages with higher content of calyces could be perceived as more acidic and more intense in characteristics associated with hibiscus presence, such as acid, astringent and the presence of intense dark red color, although the higher concentration of sucrose might have contributed to mask slightly the sourness and astringency. Acceptance for hibiscus beverages allowed to observe two segments of consumers, high-intensity and low-intensity likers but both confluence in overall liking values for beverages prepared with 2.5% calyces and 16% sucrose.

scholarly journals Red Wine Phenolic Compounds Reduce Plasma Lipids and Apolipoprotein B and Prevent Early Aortic Atherosclerosis in Hypercholesterolemic Golden Syrian Hamsters (Mesocricetus auratus)

2002 ◽  
Vol 132 (6) ◽  
pp. 1207-1213 ◽  
Author(s):  
Cyril Auger ◽  
Bertrand Caporiccio ◽  
Nicolas Landrault ◽  
Pierre Louis Teissedre ◽  
Caroline Laurent ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Apolipoprotein B ◽  
Red Wine ◽  
Plasma Lipids ◽  
Mesocricetus Auratus ◽  
Aortic Atherosclerosis ◽  
Syrian Hamsters

scholarly journals Intelligent Prediction of Sieving Efficiency in Vibrating Screens

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Bin Zhang ◽  
Jinke Gong ◽  
Wenhua Yuan ◽  
Jun Fu ◽  
Yi Huang
Keyword(s):  
Support Vector Machine ◽  
Cross Validation ◽  
Prediction Performance ◽  
Least Square ◽  
Support Vector ◽  
Adaptive Genetic Algorithm ◽  
Screen Length ◽  
Vibrating Screen ◽  
Working Parameters ◽  
Better Than

In order to effectively predict the sieving efficiency of a vibrating screen, experiments to investigate the sieving efficiency were carried out. Relation between sieving efficiency and other working parameters in a vibrating screen such as mesh aperture size, screen length, inclination angle, vibration amplitude, and vibration frequency was analyzed. Based on the experiments, least square support vector machine (LS-SVM) was established to predict the sieving efficiency, and adaptive genetic algorithm and cross-validation algorithm were used to optimize the parameters in LS-SVM. By the examination of testing points, the prediction performance of least square support vector machine is better than that of the existing formula and neural network, and its average relative error is only 4.2%.

Olfactory Impact of Higher Alcohols on Red Wine Fruity Ester Aroma Expression in Model Solution

2015 ◽  
Vol 63 (44) ◽  
pp. 9777-9788 ◽  
Author(s):  
Margaux Cameleyre ◽  
Georgia Lytra ◽  
Sophie Tempere ◽  
Jean-Christophe Barbe
Keyword(s):  
Red Wine ◽  
Model Solution ◽  
Higher Alcohols

scholarly journals PENGARUH IMPLEMENTASI ASESMEN OTENTIK DALAM PEMBELAJARAN TERHADAP HASIL BELAJAR GAMBAR TEKNIK DENGAN PENGENDALIAN BAKAT MEKANIK DI KELAS X TKRO SMK NEGERI 3 SINGARAJA

2019 ◽  
Vol 9 (2) ◽  
pp. 58-69
Author(s):  
Gede Aprianto ◽  
I Made Candiasa ◽  
I Made Gita
Keyword(s):  
Performance Assessment ◽  
Random Sampling ◽  
Sampling Technique ◽  
Authentic Assessment ◽  
Single Factor ◽  
Learning Achievement ◽  
Project Assessment ◽  
Technical Drawing ◽  
Quasi Experimental ◽  
Better Than

AbstrakTujuan utama penelitian ini adalah untuk mengetahui pengaruh implementasi asesmen otentik yang terdiri dari asesmen proyek dan asesmen kinerja terhadap hasil belajar gambar teknik dengan pengendalian bakat mekanik yang dilakukan di kelas X TKRO SMK Negeri 3 Singaraja. Penelitian ini merupakan jenis quasi experiment dengan rancangan single factor independent groups design with use covariate. Sampel penelitian berjumlah 70 orang siswa yang diambil menggunakan teknik random sampling. Pengumpulan data dilakukan dengan metode tes obyektif dan uraian. Hipotesis pada penelitian ini diuji dengan Anakova satu jalur. Hasil penelitian menunjukkan bahwa : Pertama, hasil belajar gambar teknik siswa yang diberi penerapan asesmen proyek lebih baik daripada siswa yang diberi penerapan asesmen kinerja (thit = 2,303; p ≤ 0,05). Kedua, setelah dilakukan pengendalian terhadap bakat mekanik, hasil belajar gambar teknik siswa yang diberi penerapan asesmen proyek lebih baik daripada hasil belajar siswa yang diberi penerapan asesmen kinerja (Fhit = 49,204; p ≤ 0,05). Ketiga, terdapat kontribusi bakat mekanik (86,2%) terhadap hasil belajar gambar teknik (R = 0,929; thit = 20,620; p ≤ 0,05). Atas temuan tersebut, disimpulkan bahwa asesmen proyek dan bakat mekanik mempunyai pengaruh terhadap hasil belajar gambar teknik pada siswa kelas X TKRO SMK Negeri 3 Singaraja. Kata kunci: asesmen otentik, hasil belajar gambar teknik, bakat mekanik AbstractThe main objective of this study was to determine the effect of authentic assessment implementation consisting of project assessment and performance assessment towards the technical drawing learning achievement by controlling mechanical talent in X TKRO class at SMK Negeri 3 Singaraja. The study employed a quasi-experimental type with a single factor design independent groups design with use covariate. There were 70 students as the samples of the study that determined by random sampling technique. The data were obtained through objective test and essay method. The hypothesis in this study was tested by a one-way Ancova. The results showed that: a) the technical drawing learning achievement of the students that applied project assessment were better than the learning achievement of students who were applied performance assessment (thit= 2.303; p ≤ 0.05), b) after controlling for mechanical talent, the technical drawing learning achievement of the students applied project assessment were better than the students who applied performance assessment (Fhit = 49.204; p ≤ 0.05), c) there was a contribution of mechanical talent (86.2%) to the technical drawing learning achievement (R = 0.929; thit = 20.620; p ≤ 0.05). Based on these findings, it was concluded that project assessment and mechanical talent had an influence on the technical drawing learning achievement of X TKRO class at SMK Negeri 3 Singaraja. Keywords: authentic assessment, technical drawing learning achievement, mechanical talent

scholarly journals Red Wine and Yacon as a Source of Bioactive Compounds with Antidiabetic and Antioxidant Potential

2020 ◽  
Author(s):  
Mariia Nagalievska ◽  
Mariya Sabadashka ◽  
Nataliia Sybirna
Keyword(s):  
Phenolic Compounds ◽  
Red Wine ◽  
Biologically Active Substances ◽  
Biologically Active ◽  
Low Grade ◽  
Smallanthus Sonchifolius ◽  
Grape Wine ◽  
Low Grade Inflammation ◽  
Antioxidant Effects ◽  
Active Substances

Phytochemicals derived from different plants are promising therapeutic agents. Herbal compounds can be used under diseases, etiological causes of which are alterations of carbohydrate, protein, and lipid metabolisms, along with increased oxidative stress and chronic low-grade inflammation. Potential sources of biologically active substances may be grape wine, rich in phenolic compounds. Well-studied examples of polyphenols are phenolic acids, catechins, anthocyanins, and flavonoids, etc. Another source of biologically active compounds is yacon (Smallanthus sonchifolius Poepp. & Endl.). The aboveground part of yacon is rich in phenolic compounds and terpenes. Main biologically active substances from tuberous roots of yacon are fructooligosaccharides and phenolic compounds. The section will be devoted to the analysis of hypoglycemic and antioxidant effects, and molecular targets of the complex of biologically active substances derived from red wine and yacon.

scholarly journals Analysis of the water quality condition of the Zijiang River in summer and the applicability of evaluation methods

2021 ◽  
Vol 237 ◽  
pp. 01027
Author(s):  
Tao Zhang ◽  
Peng Xiang ◽  
Shijiang Zhu ◽  
Yang Liu ◽  
Wen Xu ◽  
...  
Keyword(s):  
Water Quality ◽  
River Water ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Nutrient Status ◽  
River Water Quality ◽  
Single Factor ◽  
Index Method ◽  
Factor Evaluation ◽  
Status Index

The single-factor evaluation method, improved Nemerow index method, fuzzy mathematical synthesis evaluation method and comprehensive nutrient status index method were used to evaluate the water quality of the Zijiang River in summer, and to analyze the applicability of the evaluation methods. The results show that: (1) The Zijiang River is heavily polluted with nitrogen and TN is the main pollutant in the summer. The overall nutrient status index is 34.33, which is not eutrophic. (2) The single-factor evaluation method is simple and suitable for rapid identification of excessive pollutants, but cannot reflect the water quality. the Nemerow index method takes into account the weight of each evaluation factor in the river water quality, and is suitable for making a comprehensive evaluation of the river water quality, but has a certain degree of subjectivity when classifying the water quality. The fuzzy comprehensive evaluation method is suitable for reflecting the influence of different evaluation factors on water quality by calculating the weight and membership degree of each evaluation factor, but the calculation is complicated.The Integrated Nutrient Status Index method is suitable for determining whether eutrophication is occurring in a water body and cannot determine the water quality category.

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