Floods are natural disasters with significant socio-economic consequences. Urban areas uncontrolled urban development, rapid population growth, an unregulated municipal system and unplanned change of land use belong to the highly sensitive where floods cause devastating economic social losses. The aim this paper is present a reliable GIS multi-criteria methodology for hazard zones’ mapping flood-prone in areas. proposed based on combined application geographical information systems (GIS)...

This paper suggests spatial multi-criteria model in order to assist decision makers the selection of sites which are suitable for ammunition depots (AD). They represent military facilities have more criteria that need be matched than civil structures. The proposed is based on combined use Geographic information systems (GIS) and techniques. application presented case study Carpathian region, Eastern part Serbia. deals with nine restrictions six evaluation criteria. Decision Making Trial...

This paper presents spatial mathematical model in order to identify sites for the wind farms installment which can have significant support planners area of strategy and management power use. The suggested is based on combined use Geographical Information Systems (GIS) with multi-criteria techniques Best-Worst method (BWM) MultiAttributive Ideal-Real Comparative Analysis (MAIRCA). Rough numbers fuzzy logic are used exploit uncertainty during data analysis model. applied case study. BWM...

Introduction/purpose: Rockets with high-explosive (HE) warheads are the most numerous type used for multiple launch rocket systems (MLRS). They a wide range of combat tasks. Besides other design characteristics, effect on target depends position where detonation is initiated in their explosive charge. The study analyses fragmentation effects steel balls from 128 mm M77 HE warhead standard point-detonating (PD) fuze and differently positioned detonating assembly. Methods: uses simple...

Abstract In this work multiwalled carbon nanotubes (MWCNTs) modified by oxidation (o-MWCNTs) and aminofunctionalization (e-MWCNTs) were examined as potential adsorbents for arsenate removal from water. Adsorption characteristics of raw MWCNTs investigated in batch adsorption experiments. The influence solution pH (pH range 3–10), contact time, temperature (25, 35, 45°C) studied. Ethylenediamine-functionalized have the greatest affinity ions, followed o-MWCNTs raw-MWCNTs. obtained...

Performance of a novel adsorbent, copper impregnated natural mineral tufa (T–Cu), applicable for efficient arsenic removal is presented in this study. Testing adsorbent properties encompassed material characterization and equilibrium study batch system. Copper modification contributed to increased adsorption capacities, that is, from 4.65 67.83 mg g −1 As(III), 6.84 104.62 As(V), comparing unmodified tufa. The obtained thermodynamic data indicated higher feasibility spontaneity the process...

The multistage synthesis of the multi-wall carbon nanotubes (MWCNT) modified with polyamidoamine dendrimers, A1/ and A2/MWCNT, capable cation removal, is presented in this work, as well novel adsorbents based on these precursor materials goethite nano-deposit, ?-FeOOH, A2/MWCNT??-FeO(OH) used for As(V) removal. In a batch test, influence pH, contact time, initial ion concentration temperature adsorption efficiency were studied. Adsorption data modelling by Langmuir isotherm, revealed good...

Synthesis of branched aminated waste polyacrylonitrile (PAN) fibers, realized in a three addition/ amidation successive steps, was performed order to obtain AS3-PAN adsorbent.Influence various operating parameters such as pH, contact time, adsorbent mass and initial concentration pollutants, on adsorption capacity has been studied.Design the experimental plan experiments, defined by response surface methodology (RSM), rationalized number necessary experiments.The calculated capacities for...

The aim of this study was to determine soil properties influence on the heavy metals sorption by vegetables which are used in diet and possibilities for prediction their bioaccumulation response surface methodology (RSM). Lettuce as biosorbent, cadmium (Cd) lead (Pb) were contaminants. is grown compost (previously contaminated with different concentrations Cd Pb) pH adjusted amounts NPK fertilizers. content determined ICP-MS. Results showed that lettuce below toxic values, but Pb...

The synthesis and adsorption potential of Cy-npAg, obtained by modification raw montmorillonite clay (raw-Cy) with silver nanoparticle (npAg), was studied in this work.Optimization procedure, respect to time, temperature amount deposit npAg, either reductive precipitation or ultraviolet irradiation, performed using response surface methodology (RSM).The most efficient adsorbent, chemical reduction ion sodium borohydride, named characterized detail Brunauer-Emmett-Teller, scanning electron...

This paper describes an optimization procedure for the adsorption of arsenite ions from wastewater using Adaptive Neuro-Fuzzy Inference System (ANFIS). The adsorbent is based on hydroxy apatite, a natural material obtained carp (Cyprinus carpio) scales. input parameters were influence pH, temperature, initial concentration and reaction time while capacity removal percentage studied as output parameters.

Preliminary communicationThe main parts of digital images processing are procedures that improve the quality which does not information content, but ensures image is visually better and more suitable for display.That achieved through improved contrast, noise removing, sharpening colouring pictures.Contrast rate frequency changes in illumination recording difference between light dark elements brightness level.Contrast two adjacent surfaces' brightness.Absolute value an object less importance...

Introduction/purpose: In this study, we investigated the possibility of removing organophosphorus pesticide malathion from water using a new adsorbent based on biowaste river shell shards Anodonta Sinadonta woodiane family, material that accumulates in large quantities as waste banks rivers. Two adsorbents were tested - mechanically comminuted shells (MRM) and mechanosynthetic hydroxyapatite (RMHAp). Methods: The obtained characterized for removal water. order to predict optimal adsorption...

Introduction/purpose: Gunpowder is a type of explosive material (EM), mixture chemical compounds capable releasing their potential energy in very fast exothermic reaction. This paper investigates the single base gunpowder samples. Methods: Microcalorimetry (MC), or heat flow calorimetry (HFC), only modern method that monitors direct cause autoignition - rate release, which key factor for storage safety. It based on high-sensitivity calorimeters allow monitoring reactions at low speeds. The...

The glycidyl azide polymer (GAP), known as an energetic, thermally stable, low sensitive, hydroxyl-terminated prepolymer, was synthesized using different diol and triol initiator units. GAP prepared by azidation of poly(epichlorohydrin) (PECH) with polyol units in the chain. PECH obtained cationic ring-opening polymerization epichlorohydrin, BF3-etherate a catalyst co-catalyst. polymers have been characterized IR-spectroscopy, while prepolymers structure confirmed proton NMR spectroscopy....

The experimental research on shape of detonation wave was done for cylindrical explosive charges with 5 different energetic materials nitrocellulose and nitroglycerine. Energetic were manufactured the technology production ball propellants. Shape determined using method measurement arrival time to a certain point in charge. Measurement system developed Military Technical Institute (VTI) Belgrade had 16 fibre optic cables, multi-channel optical signal detector oscilloscope. Curvature at two...

Rocket motor propellant grain, cast or bonded into the chamber solid coating, is exposed to various loads during its service life. a viscoelastic material, whose mechanical properties strongly depend on temperature and strain rate. Application of cyclic loads, primarily thermal, onto rocket field stock, may cause an undesirable damage grain. Over time, after long storage, it grow up lead grain failure. One ways for evaluation this phenomenon determine cumulative law. In example, law has been...

The possibility of the impact sensitivity prediction based on physicochemical properties and element composition explosives contributes to a faster research novel high (HE), reduces costs helps improve explosive safety. This paper analyzes existing methods for introduces response surface methodology (RSM). new method comprises correlation between two primary HE: detonation velocity heat detonation. Calculated sensitivities are compared experimental values taken from literature in order...