Free sulfur in petroleum distillates -- Effect of peroxides upon the copper-strip method. Quantitative method for the determination of free sulfur

1936 ◽  
Vol 8 (6) ◽  
pp. 460-462 ◽  
Author(s):  
S. Comay
Keyword(s):  
Quantitative Method ◽  
Copper Strip ◽  
Strip Method ◽  
Petroleum Distillates ◽  
Free Sulfur

PROFITABILITY ANALYSIS OF TERUBUK FARMING (SACCHARUM EDULE HASSKARL) IN SUBDISTRICT TOSA DISTRICT OF EAST TIDORE OF TIDORE ISLAND

2018 ◽  
Author(s):  
Suwandi S. Sangadji
Keyword(s):  
Data Collection ◽  
Research Method ◽  
Quantitative Method ◽  
Secondary Data ◽  
Primary Data ◽  
Profitability Analysis ◽  
Sample Method ◽  
Document Review ◽  
Revenue Production

The purpose of this researchment is to ascertain how wide the farming of species Saccharun Edule Hasskarl (terubuk) in sub district Tosa, district of East Tidore of Tidore Island through the indicator of the value revenue, production and selling prices so that the farmers will achieve The Break Event Point (BEP). The research method was used a quantitative method with the number of samples of 30 people. The determination of the sample method is using the census method or involving all members of the population into a sample of researchment. The secondary data collection was done by using library literature in the form of document review and relevant references to research object while primary data collection was done by using questionnaire. The data is using equation R /C Ratio, BEP Revenue, BEP Price, and BEP Production. Therefore from the results of the researchment it can be explained that the two of the thirty farmers come through the break event point, while the other twenty-eight farmers declared having a business that worth to be develop or experiencing profit, because the R/C ratio is above 1.0 with average profit reach Rp. 989.000, - per production / farmer.

scholarly journals Determination of Flavonoids Compounds of Three Species and Different Harvesting Periods in Crataegi folium Based on LC-MS/MS

Molecules ◽  
2021 ◽  
Vol 26 (6) ◽  
pp. 1602
Author(s):  
Ya-Ping Guo ◽  
Hong Yang ◽  
Ya-Li Wang ◽  
Xiao-Xiang Chen ◽  
Ke Zhang ◽  
...  
Keyword(s):  
Quantitative Analysis ◽  
Qualitative Analysis ◽  
Quantitative Method ◽  
Total Content ◽  
Qualitative And Quantitative Analysis ◽  
Pharmacological Activities ◽  
Time Saving ◽  
Qualitative And Quantitative ◽  
First Time

Crataegi folium have been used as medicinal and food materials worldwide due to its pharmacological activities. Although the leaves of Crataegus songorica (CS), Crataegus altaica (CA) and Crataegus kansuensis (CK) have rich resources in Xinjiang, China, they can not provide insights into edible and medicinal aspects. Few reports are available on the qualitative and quantitative analysis of flavonoids compounds of their leaves. Therefore, it is necessary to develop efficient methods to determine qualitative and quantitative flavonoids compounds in leaves of CS, CA and CK. In the study, 28 unique compounds were identified in CS versus CK by qualitative analysis. The validated quantitative method was employed to determine the content of eight flavonoids of the leaves of CS, CA and CK within 6 min. The total content of eight flavonoids was 7.8–15.1 mg/g, 0.1–9.1 mg/g and 4.8–10.7 mg/g in the leaves of CS, CA and CK respectively. Besides, the best harvesting periods of the three species were from 17th to 26th September for CS, from 30th September to 15th October for CA and CK. The validated and time-saving method was successfully implemented for the analysis of the content of eight flavonoids compounds in CS, CA and CK for the first time.

scholarly journals Determination of Free Sulfur in Extracted Acetone Solution

1957 ◽  
Vol 60 (6) ◽  
pp. 789-790
Author(s):  
Wasaburo Jono ◽  
Teizo Watanabe ◽  
Kannosuke Miyaji ◽  
Hideo Konishi
Keyword(s):  
Acetone Solution ◽  
Free Sulfur
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