scholarly journals Determination of the Control Methods of Ipomoea triloba L. (Three Lobe Morning Glory) in Cotton Fields

2021 ◽  
Author(s):  
Mine ÖZKİL ◽  
İlhan ÜREMİŞ
Keyword(s):  
Morning Glory ◽  
Control Methods ◽  
Cotton Fields ◽  
Ipomoea Triloba

Experimental research control methods of the spatial position of building constructions

2017 ◽  
Vol 922 (4) ◽  
pp. 7-12 ◽  
Author(s):  
G.A. Shekhovtsov ◽  
R.P. Shekhovtsova ◽  
D.P. Ivenin ◽  
O.V. Raskatkina
Keyword(s):  
Simultaneous Determination ◽  
Experimental Research ◽  
Vertical Plane ◽  
Error Theory ◽  
Spatial Position ◽  
Bridge Crane ◽  
Building Structures ◽  
Control Methods ◽  
Engineering Geodesy

The article contains the method of discrete scanning points in the vertical plane of the columns and roof trusses for the simultaneous determination of vertical columns, the distance between them in flight at their tip and deflection farms with one point standing and only one performer. The technique is based on the use of reflectorless electronic tachymeter and its SDh key. Experimental research of methods on the elements of building structures NNGASU educational housing using electronic tachymeter SET530R. Results of the experiments were monitored by a coordinate and photographic methods, as well as with the developed at the chair of Engineering Geodesy laser-mirroring device designed to measure inaccessible or hard to reach distances. Analysis methods of error theory position and the results of its comparison with other methods have shown that it provides the required accuracy, easy to perform, does not require the output of the observer on the crane path or lift to the towers, free from the multiple engagement of the bridge crane and can be successfully applied on practice.

scholarly journals Qualitative terpene profiling of Cannabis varieties cultivated for medical purposes

Rodriguésia ◽  
2020 ◽  
Vol 71 ◽  
Author(s):  
Ernesto Diaz Rocha ◽  
Vitória EA Silva ◽  
Fernanda CS Pereira ◽  
Valery M Jean ◽  
Fabio L Costa Souza ◽  
...  
Keyword(s):  
Raw Material ◽  
Control Methods ◽  
Intermediate Type ◽  
Spectral Library ◽  
Medical Cannabis ◽  
Two Samples ◽  
Different Strains ◽  
Main Component ◽  
Non Destructive

Abstract With the upcoming medical Cannabis regulation, quality control methods on raw material will be required. Besides testing for contaminants and potency, there are also pharmaceutical and forensic interests in the determination of the terpene profile in different strains of Cannabis as complementary identification methods. A simple non-destructive HS-SPME GC-MS method was used to identify the terpene content in twelve Cannabis samples, four of them were of the hemp type (Harle-tsu), seven from various marihuana types and one of the intermediate type. They all were previously analyzed by HPLC to determine the potency (THC and CBD content). Spectral library matching was used to identify the terpenes compounds. Thirty terpenes compounds were detected, nine of them were present in all Cannabis samples and used to find their terpene profile: α-pinene, β-pinene, β-myrcene, D-limonene, terpinolene, linalool, caryophyllene, α-bergamotene and humulene. Three of them, caryophyllene, α-pinene and β-myrcene were found as larger components in most of samples. A principal components analyses (PCA) was performed. The four hemp type samples showed two different profiles, two samples showed caryophyllene as main component and the others two with β-myrcene as such. The marihuana type samples showed wider profiles with no clear patterns at all, which is not surprising because of the low number of samples. The simple methodology shows viable to set the terpenes profile for analyses of raw Cannabis material. Suitability for differentiation between different sorts of types needs more studies, with increasing numbers of samples.

scholarly journals Herbicides from the group of nitrodiphenyl ethers: applications in Ukraine, control methods, methods for determination of oxifluorphene residues in soybean grain and oil

2021 ◽  
Vol 20 (66) ◽  
pp. 15-23
Author(s):  
Yu Baranov ◽  
◽  
V Demchenko ◽  
Ie Zajets ◽  
S Olszewski ◽  
...  
Keyword(s):  
Liquid Chromatography ◽  
Selective Extraction ◽  
Agricultural Products ◽  
Gas Liquid Chromatography ◽  
Control Methods ◽  
Liquid Chromatography Mass Spectrometry ◽  
Analytical Validation ◽  
Regulatory Requirements ◽  
Food And Feed

A review of analytical methods for the determination of herbicide residues from the group of nitrodiphenyl ethers in the environment and agricultural products, developed and validated a method for oxyfluorfen determination in soybean grain and oil method GC/ECD, which meets regulatory requirements and solves the problem of toxicant control in the above matrices. The developed method uses modern methods of sample preparation, identification and quantification of oxyfluorfen (selective extraction, capillary gas-liquid chromatography (GC/ECD GC/MS). The method is validated according to EU requirements) (SANTE/12682/2019 quality control and analytical validation procedures for pesticide residues analysis in food and feed). Key words: gas-liquid chromatography, mass spectrometry, herbicides, nitrodiphenyl ethers, control, residual amounts.

The Effects Of Weed Control Methods On Weeds In Cotton And Autumn Wheat Fields

2020 ◽  
Vol 02 (12) ◽  
pp. 9-13
Author(s):  
M.J. Sharofiddinova ◽  
Keyword(s):  
Weed Control ◽  
Control Measures ◽  
Control Methods ◽  
Cotton Fields

This article provides the results of harmonized weed control measures, which annual and biennial weeds in cotton and autumn wheat fields have been reduced by 80.2-82.7% in cotton fields and by 93.5% in autumn wheat fields.

Determination of crop water use and coefficient in drip-irrigated cotton fields in arid regions

2019 ◽  
Vol 236 ◽  
pp. 85-95 ◽  
Author(s):  
Shumin Han ◽  
Yonghui Yang ◽  
Huilong Li ◽  
Yanmin Yang ◽  
Jiusheng Wang ◽  
...  
Keyword(s):  
Water Use ◽  
Arid Regions ◽  
Crop Water ◽  
Crop Water Use ◽  
Cotton Fields

Precision and Accuracy of Colorimetric Procedures as Analytical Control Methods Determination of Silica

1944 ◽  
Vol 16 (7) ◽  
pp. 462-464 ◽  
Author(s):  
Allen L. Olsen ◽  
Edwin A. Gee ◽  
Verda. McLendon ◽  
Delwin D. Blue
Keyword(s):  
Analytical Control ◽  
Control Methods ◽  
Precision And Accuracy

scholarly journals Identification and determination of ergot alkaloids in Morning Glory cultivars

2016 ◽  
Vol 408 (12) ◽  
pp. 3093-3102 ◽  
Author(s):  
Julia Nowak ◽  
Michał Woźniakiewicz ◽  
Piotr Klepacki ◽  
Anna Sowa ◽  
Paweł Kościelniak
Keyword(s):  
Ergot Alkaloids ◽  
Morning Glory
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