Fire Parameters of Spruce (Picea abies Karst. (L.)) Dust Layer from Different Wood Technologies Slovak Case Study

The issue of the formation of wood dust particles in the work environment is still an actual topic in terms of its impact on employee health and the risk of fire or explosion in a woodworking operation. This article deals with the characteristics of spruce dust (Picea abies Karst. (L.)), which was taken from several types of wood technology. Experimental samples of spruce dust were taken from four types of sawing technologies, including grinding, briquetting and from the suction device container. The physical parameters of the samples taken were monitored and the particle size analysis was determined. The granulometric composition of the samples is significantly different. The sample of spruce wood dust from sawing has the most numerous fraction (250 µm), while the sample from grinding has the most numerous fraction 63–250 µm (87%).The aim of the paper was to monitor the minimum ignition temperature of the settled spruce dust layer and to look for a significant dependence of the minimum ignition temperature and ignition time on the type of spruce dust sample. A significant dependence was not confirmed. Significant moisture dependence of the samples was confirmed; the highest humidity was observed in the container, the lowest in sawing.

Compression strength-focused properties of wood composites induced by density

Compression strength-focused properties of wood composites induced by density. The aim of this study was to analyse the contractual compression strength and modulus of elasticity under compression of ten commercially available wood composites of various thickness, density, structure and surface finish. Density and density profiles have also been performed. The tests showed that there is no significant dependence of the compression strength and MOEC on the density of composites.

DEGREE OF INVASION OF HORSES PARASCARIS EQUORUM UNDER DIFFERENT CONDITIONS OF CONTENT

The significant dependence on the invasion of Parascaris equorum horses with different maintenance technologies was studied. Methods of helminthocoprooscopy revealed the spread of parascaridosis of horses kept in stable and herd conditions in the Pobeda farm in the Cheremshansky district of the Republic of Tatarstan. The high invasion of animals with herd and stable housing is apparently associated with a large contamination of horse stalls, stables, care items and the surrounding area with parascaride eggs. The maximum parasiticidal infection of horses was established with stable maintenance. As a result of the studies, it was found that the maximum extent of invasion (EI) of horses in the examined farm with stable technology of keeping was 42.8 % and herd content was 37.5 %. The intensity of invasion (II) by parascarides varied from 23.7±3.4 to 77.3±5.6 ind. eggs in 1 g of feces, depending on the technology of maintenance.

An alternate novel approach to classify lip prints

Background The wrinkles and grooves present on the sulci labiorum of human lips form characteristic patterns. As previous authors claimed, these can be used for personal identification in forensic cases because they are unique, permanent, and classifiable. Many scientists had devised different systems to classify the lip prints (Suzuki and Tsuchihashi, Martin Santos, Renaud, Afchar Bayar, and Jose Maria Dominguez). These systems were based solely on the shape of patterns present on the whole lip. However, sometimes, lip prints affected by either habitual smoking or any other pathological conditions are encountered. The investigator may have to form an opinion on partial lip print to identify the culprit. Therefore, in the present study, an alternative comprehensive system to classify even the partial prints has been proposed. Lip print samples were collected from 500 individuals (400 females and 100 males, respectively) using the tape lifting method. The whole lip print (Klein’s zone) was divided into 10 quadrants (five each on upper and lower lips) to study the whole pattern area thoroughly. The sample-wise and quadrant-wise frequency of all the patterns was statistically calculated. Sexual dimorphism of the lip print patterns was also assessed statistically. Results The method used emphasizes the consistency of patterns, which have been divided into Basic and Combination Patterns. Detailed examination of lip prints revealed that all the quadrants tend to have 7 types of Basic Patterns and 43 types of Combination Patterns despite similar appearance. These patterns can be further categorized into various subtypes based on the direction and orientation of wrinkle lines constituting the original pattern. Most of the Basic and Combination Patterns were widely distributed in all the analysed lip print samples and showed significant dependence on the sex of the subject. Conclusions The lip print patterns examined in the present study can be useful as an alternative to the existing systems to classify even partial lip marks recovered at the crime scene.

Characterisation of signal-induced noise in Hamamatsu R11265 Multianode Photomultiplier Tubes

Signal-induced noise is observed in Hamamatsu R11265 Multianode Photomultiplier Tubes, manifesting up to several microseconds after the single photoelectron response signal and localised in specific anodes. The mean number of noise pulses varies between devices, and shows significant dependence on the applied high-voltage. The characterisation of this noise and the mitigation strategies to perform optimal single-photon counting at 40 MHz, as required by the LHCb Ring-Imaging Cherenkov detectors, are reported.

Compound flood potential from storm surge and heavy precipitation in coastal China: dependence, drivers, and impacts

The interaction between storm surge and concurrent precipitation is poorly understood in many coastal regions. This paper investigates the potential compound effects from these two flooding drivers along the coast of China for the first time by using the most comprehensive records of storm surge and precipitation. Statistically significant dependence between flooding drivers exists at the majority of locations that are analysed, but the strength of the correlation varies spatially and temporally and depending on how extreme events are defined. In general, we find higher dependence at the south-eastern tide gauges (TGs) (latitude < 30∘ N) compared to the northern TGs. Seasonal variations in the dependence are also evident. Overall there are more sites with significant dependence in the tropical cyclone (TC) season, especially in the summer. Accounting for past sea level rise further increases the dependence between flooding drivers, and future sea level rise will hence likely lead to an increase in the frequency of compound events. We also find notable differences in the meteorological patterns associated with events where both drivers are extreme versus events where only one driver is extreme. Events with both extreme drivers at south-eastern TG sites are caused by low-pressure systems with similar characteristics across locations, including high precipitable water content (PWC) and strong winds that generate high storm surge. Based on historical disaster damages records of Hong Kong, events with both extreme drivers account for the vast majority of damages and casualties, compared to univariate flooding events, where only one flooding driver occurred. Given the large coastal population and low capacity of drainage systems in many Chinese urban coastal areas, these findings highlight the necessity to incorporate compound flooding and its potential changes in a warming climate into risk assessments, urban planning, and the design of coastal infrastructure and flood defences.

Investigation of the dependence of the internal disruptive pressure in a fire hose on geometric densities on the warp and the weft of its woven reinforcing frame

In this article, based on the obtained formula for calculating the strength of a pressure fire hose(PFN) under the action of internal hydraulic pressure, the dependence of the disruptive pressure in alatex pressure fire hose, designed for an operating pressure of 1.6 H, on such parameters as geometric densities on the warp and the weft, is studied. As a result of the studies, the pattern of decreasing the disruptive pressure of a fire hose with an increase in the geometric densities on the warp and the weft of a reinforcing frame of a pressure fire hose was experimentally established. When designing new fire hoses, it is important to take into account the significant dependence of the disruptive pressure on the geometric densities on the warp and the weft of a reinforcing frame. Recommendations are given on choosing the optimal parameters for a woven reinforcing frame of latex pressure fire hoses with a diameter of 77 mm.

A new way to optimize primary prevention of bleeding from varicose veins of esophagus

Objective. To establish the possibility of optimization of drug prevention of bleeding from varicose veins of the esophagus based on the influence of meteorological factors on the development of the disease. Materials and methods. The results of examination and treatment of 86 patients diagnosed bleeding from varicose veins of the esophagus, who were treated at the Emergency Hospital of Ryazan in 2016-2018, were analyzed. Results. A significant dependence of the incidence of bleeding from varicose veins of the esophagus on meteorological factors, in particular, on changes in atmospheric pressure, was revealed. Based on the analysis of the weather data archive, the safest periods for temporary interruption of the courses of drug primary prevention were established. Conclusions. A break in the course of primary drug prevention of bleeding from varicose veins of the esophagus, necessary to increase its effectiveness, will be the safest in February and July.

Assessment of infrastructure entities’ activity on the insurance market

The paper presents an approach to assessing insurance market infrastructure entities’ activity that allows identifying gaps and weaknesses and seeking ways of addressing them in the context of revitalization of such emerging insurance markets as Ukrainian. To determine the impact of costs of insurance market infrastructure entities on the financial performance before taxes resulting from insurance activity, the regression formula is used. It demonstrates significant dependence between financial performance before taxes of insurers and costs of accident commissioner services. Based on this, an assessment approach for groups of insurance market infrastructure entities is created. The assessment results suggest that the efficiency of insurance market infrastructure entities in Ukraine is unsatisfactory (135 points out of 390). To develop infrastructure entities of the insurance market in Ukraine, it is expedient to ensure an effective regulatory framework for all insurance infrastructure entities, including registers, reporting, and a requirement to disclose information on their performance.

THE EFFECTIVENESS OF USING ECG TELETRANSMISSION DURING EMERGENCY MEDICAL TEAM INTERVENTIONS

Aim: To determine the importance of electrocardiogram (ECG) teletransmission on the time required for decisions on diagnosis and treatment and the transport of patients with myocardial infarction. Material and methods: This study is retrospective in character and concerns the regional activities of the Bielsko Emergency Medical Services and the possibility of sending medical data electronically from a patient’s location to the clinic of interventional cardiology (CIC). Group A (n=237) included patients in whom the Medical Response Team (MRT) confirmed ST-Elevation Myocardial Infarction (STEMI) and carried out an ECG with data teletransmission to the CIC. Group B (n=101) included patients in whom the MRT confirmed STEMI and carried out an ECG without teletransmission. For both groups, the MRT recorded the time of arrival at the patient’s location and the time when the patient was handed over to the CIC. Results: A group of 638 patients were identified in whom the chest pain was of cardiac origin. Of these patients, 338 were identified as patients with diagnosed STEMI. A significant dependence was demonstrated of the time t [mins] of teletransmission (p=0.00308). A significant dependence was demonstrated of the effect of distance s [kms] (p=0.00000). A significant dependence was demonstrated of the time t from the place of residence, taking into account the distance s (p=0.00929). Conclusions: Using ECG teletransmission in pre-hospital procedures shortens the time for diagnosis and transport of patients with STEMI, and thus improves the results of treatment.