Analysis of soil permeability and C-Organic in landslide events in Tangka Sub-Watershed

One of the areas in South Sulawesi Province classified as prone to landslides is the Tangka Sub-watershed in the West Sinjai Sub-District. The factors used in making the susceptibility map in the West Sinjai area mostly use general characteristics, such as slope, slope shape, distance from the river, lithology, land cover, and rainfall. Several previous research results stated that internal soil factors significantly affect the occurrence of landslides. Therefore, this study aims to determine the internal characteristics of the soil, especially the permeability and C-organic soil, which affects the occurrence of landslides and create a susceptibility map based on the resulting frequency ratio value. Soil permeability analysis using permeameter method, C-Organic analysis using Walkley and Black method, and susceptibility maps using frequency ratio method. The results showed that the low permeability and c-organic level of the soil increased the soil susceptibility to landslide events and produced a more detailed map of the area susceptibility than using only general factors.

CORPORATE FINANCE IN AN ECONOMIC ANALYSIS SYSTEM: GOVERNANCE, INTENSIFICATION, COMPETITIVENESS AND COST

Accounting and management information of a corporation in the current economic state of business should be useful for forecasting, planning, regulation, analysis and control, i.e. act as an important link in managerial decision-making. The article contains material that includes the author's development of tools for the formation of a system of indicators intended for an objective assessment of the intensification of corporate finance, which for them, as the main economic entities of large business, is a key factor in competitiveness and leadership in their market segments. This system is built through the interaction of the resulting indicators (changes in the result (profit) and changes in costs (expenses)) with direct and indirect indicators of the efficiency of corporate finance without taking into account (generalized) and taking into account their differentiation (detailed), based on cash receipts and payments, according to controlled (economic processes) and uncontrolled (micro-environment and macro-environment) operating conditions. It is aimed at helping corporations to obtain financial benefits while combining the maximum possible increase in profits and reducing costs (monetary savings) in aggregate and in the context of their individual elements in operational terms through a holistic and organic analysis of the selected resulting and factor indicators that characterize the effectiveness (direct profitability ) and the cost (indirect profitability) of the activities carried out by them in their multidirectional and vast business environment.

Development of international key comparisons in the field of chemico-analytical measurements

The most challenging goals in the field of chemico- and bioanalytical measurements are described. Solutions of these problems are presented, which are being solved in particular by participating in new international comparisons organized by the Cosultative Committee on the Amount of Substance of the International Committee on Weights and Measures (CCQM CIPM). The purposes and tasks of developing key comparisons in the following areas are described: isotopic measurements; determination of the purity of substances; organic analysis; bioanalytical measurements; measurements of aerosol particle parameters; measurements in the field of gas analysis and electrochemistry. It is shown that participation in international key comparisons makes it possible to obtain valid and reliable results of measurements of the composition and properties of gas and liquid media, as well as solid substances and materials.

A Preliminary Study on the Differentiation of Linseed and Poppy Oil Using Principal Component Analysis Methods Applied to Fiber Optics Reflectance Spectroscopy and Diffuse Reflectance Imaging Spectroscopy

This paper presents results from the examination of a set of experimental samples using fibre optic reflectance spectroscopy (FORS) and diffuse reflectance imaging spectroscopy in the short-wave infrared (SWIR) range, combined with statistical analysis of the data for the discrimination and mapping of poppy and linseed oil. The aim was to evaluate the efficacy of this non-invasive approach for the study of paint samples with a view to the application of the method for characterisation of the two drying oils in painted art. The approach allowed discrimination between the two drying oils based on FORS spectra and the hyperspectral cube, indicating the influence of the spectral region around 1700 nm on the statistical discrimination based on the anti-symmetric and symmetric first overtone stretching of methylenic CH2 groups. This method is being studied as a potential non-invasive method of organic analysis of oil types that have formerly been studied using gas chromatography-mass spectrometry (GC-MS), which requires micro-samples.