The Impact of Rail Infrastructure on the Military Security of the Republic of Poland

In the nineteenth century, there was a significant development of rail transport in Poland. The use of rail transport by the Polish Armed Forces depends on the current situation in the country and in the world as well as on the tasks performed by military institutions. In peacetime, the railway is used mainly for the transport of troops to the area of training grounds and maneuvers. A key role during the transport of troops is also a properly planned route, taking into account the available railway infrastructure. The technical condition of the infrastructure largely affects the activities of a military nature. Adequate infrastructure affects the logistical security of own and allied troops in times of peace, crisis and war. Properly logistically secured, the Armed Forces of the Republic of Poland have a fundamental impact on the country's military security

Actual problems of gene resources conservation of vascular plants in the Tatra National Park

The methodological problems connected with conservation of plant gene resources in national parks and their practical application in the Tatra are discussed. A basis for an effective conservation is adoption of an appropriate strategy for preservation „in situ" for each taxon, and when a need arises also „ex situ", based on constantly up-dated stock of information on distribution, abundance, biology and ecology of a taxon (summary see page 158—159).Zadanie pt. Digitalizacja i udostępnienie w Cyfrowym Repozytorium Uniwersytetu Łódzkiego kolekcji czasopism naukowych wydawanych przez Uniwersytet Łódzki nr 885/P-DUN/2014 zostało dofinansowane ze środków MNiSW w ramach działalności upowszechniającej naukę

Silver recovery from the waste materials by the method of flotation process

During the leaching process of zinc concentrates, the waste materials rich in various metals such as eg. silver are produced. So far no attempts of silver recovery from the mentioned waste materials have been made due to the lack of any method which would be both effective and beneficial. The paper presents some possibilities of application of flotation process in silver recovery form waste materials generated during zinc production

Refining processes in the copper casting technology

The paper presents the analysis of technology of copper and alloyed copper destined for power engineering casts. The casts quality was assessed based on microstructure, chemical content analysis and strength properties tests. Characteristic deoxidising (Logas, Cup) and modifying (ODM2, Kupmod2) formulas were used for the copper where high electrical conductivity was required. Chosen examples of alloyed copper with varied Cr and Zr content were studied, and the optimal heat treatment parameters were tested for a chosen chromium copper content, based on the criterion of hardness and electrical conductivity tests. Searching for materials with high wear resistance, the influence of variable silicone content on the properties of CuNiSi alloy was researched

Bis(di-n-propyl­amine-κN)bis­(tri-tert-butoxy­silanethiol­ato-κS)chromium(II)

The title compound, [Cr(C12H27O3SSi)2(C6H15N)2], is a mol­ecular chromium(II) thiol­ate that is coordinated by two dipropyl­amine ligands in a square-planar environment. The mol­ecule lies on an inversion site

Influence of refining treatments on the properties of Al-Si alloys

The article focused on researching the influence of Ti, B, Sr and Na as a modifying treatment elements for Al-Si alloys. The influence of alloying additives such as Cu and Cr was studied. Tensile strength Rm, elongation A5 and HB hardness was analysed, as well as the influence of the above-mentioned elements on the microstructure and solidification of alloys containing a varied content of Si, within the 7 ÷ 16 % range. The influence of heat treatment on the alloy properties was also researched

COMPARATIVE ASSESSMENT OF Al-Si ALLOY GASSING DEGREE WITH THE APPLICATION OF THE ‘FIRST BUBBLE’ AND ‘SOLIDIFICATION UNDER DECREASED PRESSURE’ METHODS

All aluminum alloys in a liquid state are characterised by easy oxidation and absorption of hydrogen from the surroundings (which are the main reasons for casting defects). The amount of hydrogen adsorbed by a liquid alloy depends mainly on temperature and melting time. The performed investigations were aimed at comparing two known methods of measuring a metal gassing degree; the first bubble method and sample solidification under decreased pressure. Liquid metal melting and holding processes were performed under different conditions that caused variability of its gassing degree, resulting in a variability of purity and quality of the liquid metal. The investigations were carried out with using the hypoeutectic aluminum-silica AK7 alloy

Silver recovery from the waste materials by the method of flotation process

During the leaching process of zinc concentrates, the waste materials rich in various metals such as eg. silver are produced. So far no attempts of silver recovery from the mentioned waste materials have been made due to the lack of any method which would be both effective and beneficial. The paper presents some possibilities of application of flotation process in silver recovery form waste materials generated during zinc production

Silver recovery from the waste materials by the method of flotation process

During the leaching process of zinc concentrates, the waste materials rich in various metals such as eg. silver are produced. So far no attempts of silver recovery from the mentioned waste materials have been made due to the lack of any method which would be both effective and beneficial. The paper presents some possibilities of application of flotation process in silver recovery form waste materials generated during zinc production

Practical possibilities in using q SOFA scale by Emergency Medical Teams

Sepsis is a life-threatening dysfunction of the body that causes a host to respond incorrectly to an infection. Sepsis and septic shock are a major health issue affecting millions of people each year worldwide. Every fourth person with sepsis dies. Multi-organ trauma, acute myocardial infarction or stroke, early diagnosis and management in the first hours after the onset of sepsis improve survival rate. The Sequential Organ Failure Assessment (SOFA) scale is mainly used to assess sepsis. SOFA helps medical staff to assess the risk of morbidity and mortality due to sepsis. The basic parameters of SOFA are: assessment of the respiratory system based on partial oxygen pressure in the blood (PaO2), assessment of the nervous system based on the Glasgow Coma scale (GCS), assessment of the cardiovascular system based on the average blood pressure or after vasopressor administration (any dose), assessment of liver function based on the level of bilirubin in the blood, assessment of kidney function based on the level of creatinine in the urine, assessment of blood clotting based on the amount of thrombocytes contained in the plasma. This scale is used in hospital settings. qSOFA (Quick Sequential Organ Failure Assessment score) is a simplified version of the SOFA score as the first way to identify high-risk patients due to poor results associated with infection. qSOFA simplifies the SOFA score drastically, taking into account only three clinical criteria and introducing "any change" instead of requiring GCS ≤13. It uses three criteria, assigning one point for low blood pressure (SBP ≤100 mmHg), high respiratory rate (≥ 22 breaths per minute) or changed mentation (GC