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EN
Samples of minerals, solid bitumen and rocks from different localities and different basins have been an object of mineralogical, petrographic and geochemical analyses. Their microfissures (microfractures) are often filled with fluids forming “fluid inclusions” (FI). Such inclusions are small portions of palaeofluids that existed in the basin during the mineral formation, which may be a significant record from the geological past. Analytical procedures comprised several stages: preparation of thin and thick sections, microscopic evaluation of the material (organic matter, minerals, inclusions), FI microthermometric determinations, geochemical analyses, and auxiliary studies. General microscopic observations were conducted using a polarization microscope, cold cathode, and the special heating-freezing stage. Fluid inclusions in minerals were studied aiming at the characterization of fluids that fill these micro-volumes in crystals. The undertaken analytical steps have led to determination of the fluids trapped in inclusions as brine and/or hydrocarbons (based on fluorescence abilities). Furthermore, they have resulted in the measurement of the homogenization temperatures of inclusions (values positive for, e.g., oil, negative for methane, pure or with admixtures), and determinations of the eutectic and ice-melting temperatures of the aqueous inclusions. Thermometric studies in the heating mode generally lead to determination of temperatures of mineral crystallization since it has been assumed that the homogenization temperature of the primary aqueous inclusions represents a minimum temperature of fluid trapping during mineral precipitation. Complementary analyses, as the Raman spectrum analysis and studies on the organic matter, lead to the interpretation of the results richer, clearer and meaningful for the hydrocarbon systems context, what has been proved on some examples.
PL
W artykule zaprezentowano założenia projektu „Edukacja surowcowa elementem bezpieczeństwa surowcowego państwa”, którego celem jest popularyzacja wiedzy o surowcach mineralnych i ich znaczeniu gospodarczym wśród dzieci i młodzieży. Idea projektu zakłada propagowanie oraz upowszechnianie rzetelnej i aktualnej wiedzy o całym łańcuchu dostaw surowców (od etapu poszukiwania złóż kopalin poprzez ich eksploatację, produkcję surowców mineralnych i ich użytkowanie, a także – tam gdzie to możliwe – recykling surowców), z uwzględnieniem kwestii odpowiedzialnej rekultywacji terenów pogórniczych.
PL
Ustawa o nawozach i nawożeniu oraz rozporządzenia do ustawy pozwalają na wprowadzenie do obrotu nowych środków nawozowych, opracowanych na podstawie naturalnych kopalin, surowców mineralnych oraz odpadów mineralnych i organicznych, które spełniają określone wymagania w zakresie zanieczyszczeń chemicznych (np. metale ciężkie – Cr, Cd, Ni, Pb, Hg, As) oraz zanieczyszczeń biologicznych (żywych jaj pasożytów jelitowych: Ascaris sp., Trichuris sp., Toxocara sp., bakterii z rodzaju Salmonella). Środki nawozowe otrzymywane na bazie surowców mineralnych, na przykład o charakterze wapniowym, mogą być wprowadzone do obrotu, pod warunkiem zachowania minimalnej ilości składników pokarmowych oraz przy zachowaniu limitów metali ciężkich i innych pierwiastków potencjalnie toksycznych, takich jak kadmu (Cd) i ołowiu (Pb), czy arsenu (As). Z analizy składu chemicznego powinno wynikać, że surowce mineralne w postaci środka nawozowego, wapnującego, nie stanowią potencjalnego źródła metali ciężkich dla gleby. Środki nawozowe są bezpieczne dla środowiska i po pozytywnej opinii wydanej przez IUNG-PIB w Puławach mogą utracić status materiału odpadowego. Następnie surowce te mogą być wprowadzone do obrotu w postaci środka poprawiającego właściwości gleby lub środka wapnującego.
EN
The Act on Fertilizers and Fertilization and the Regulations to the Act allow for the marketing of new fertilizers, developed on the basis of natural minerals, mineral raw materials as well as mineral and organic waste, which meet specific requirements in terms of chemical impurities (e.g. heavy metals – Cr, Cd, Ni, Pb, Hg, As) and biological contaminants (live eggs of intestinal parasites: Ascaris sp., Trichuris sp., Toxocara sp., Salmonella bacteria). Fertilizers agents based on mineral raw materials, e.g. calcium, may be placed on the market, provided that the minimum amount of nutrients is maintained and the limits of heavy metals such as cadmium (Cd) and lead (P b), arsenic (As) are observed. The analysis of the chemical composition should show that mineral raw materials in the form of a fertilizer and liming agent are not a potential source of heavy metals for the soil. Fertilizers agents are safe for the environment and, after a positive opinion issued by IUNG-PIB in Puławy, may lose the status of a waste material. These raw materials can then be placed on the market in the form of a soil improver or liming agent.
EN
Bread in Kosovo and beyond is still the most consumed food product, but the increase in consumer awareness of healthy foods has stimulated interest in the addition of various ingredients to improve its nutritional value and sensory properties. This study aimed to identify the ideal percentage of adding pumpkin flour through its influence on the rheological, nutritional, qualitative, and sensory properties of bread. Breads were produced with different amounts of pumpkin flour (control, 5%, 10%, 15%, and 25%). The results of the rheological properties with the Brabender farinograph and extensograph devices showed that the pumpkin flour pulp had an impact on the delay in dough formation, thus affecting the increase in water absorption, development time, stability, resistance, and energy of the dough. The falling number was very high for all types of bread over 350 seconds, and there were no significant differences between them (p < 0.05). The content of nutrients in the bread, such as fat, cellulose, and ash, increased along with the content of pumpkin flour, while the protein content decreased. Also, the content of iron, magnesium, potassium, and calcium increased along with pumpkin flour addition, while the content of zinc and manganese decreased. The bread with 5% pumpkin flour had the best specific volume, while the control bread and the bread with 5% pumpkin flour had better acidity. The bread with 5% pumpkin flour and control bread had better sensory properties, but even the breads with 10% pumpkin flour had good sensory properties. Therefore, using less than 10% pumpkin flour is suggested in the production of bread without compromising the quality or sensory properties of the bread.
5
Content available remote Chemiczne oblicze czekolady
PL
Czekolada od początku swojego istnienia uważana była za afrodyzjak, źródło mądrości i energii, a nawet stosowana jako lokalna waluta. Już w VII w n.e. Majowie przyrządzali napój z ziarna kakaowego zwany ,,gorzką wodą’’, który spożywany był wyłącznie przez arystokrację oraz podczas obrzędów religijnych, a według ludowych wierzeń stanowił również pokarm bogów. Od chwili zerwania ziarna kakaowca do momentu wzięcia pierwszego kęsa czekolady, chemia odgrywa ważną rolę, ponieważ wpływa na kolor, smak, konsystencję i aromat. Walory te są zasługą wielu procesów chemicznych i biologicznych, które zachodzą na wszystkich etapach obróbki ziarna. Otrzymana tabliczka szczęścia zawiera nie tylko pewną ilość substancji o działaniu psychoaktywnym jak np. kofeinę czy teobrominę, ale również szereg składników mineralnych, witamin oraz polifenoli. Po spożyciu czekolady wspomniane chemikalia działają „magicznie”, subtelnie wpływając na mózg i ciało, co potwierdza wiele naukowych badań. Pomimo trendu na prowadzenie zdrowego trybu życia, dietetycy nie odradzają spożywania czekolady, a wręcz wskazują na jej działania prozdrowotne m. in. leczenie chorób układu krążenia, anemii, dolegliwości związanych z układem nerwowym oraz korzystny wpływ na samopoczucie. Jednak mimo powstałej listy 100 dolegliwości, którym czekolada może zaradzić należy mieć na uwadze również niepożądane następstwa i przeciwskazania do jej spożywania.
EN
From its earliest days, chocolate has been considered an aphrodisiac, a source of wisdom and energy, and has even been used as local currency. As early as the 7th century AD, the Maya made a beverage made from cocoa beans called 'bitter water', which was consumed only by the aristocracy and during religious ceremonies and, according to folk beliefs, was also the food of the gods. From the moment the cocoa bean is picked to the moment the first bite of chocolate is taken, chemistry plays an important role by influencing colour, flavour, texture and aroma. These qualities are due to the many chemical and biological processes that take place at all stages of the bean's processing. The resulting slab of happiness contains not only a certain amount of substances with psychoactive effects such as caffeine or theobromine, but also a number of minerals, vitamins and polyphenols. When chocolate is consumed, the aforementioned chemicals have a "magical" effect, subtly influencing the brain and body, as confirmed by many scientific studies. Despite the trend towards a healthy lifestyle, nutritionists do not discourage the consumption of chocolate; in fact, they point to its health-promoting effects, including the treatment of cardiovascular disease, anaemia, ailments related to the nervous system and its beneficial effects on well-being. However, despite the resulting list of 100 ailments that chocolate can remedy, we should also be aware of the undesirable consequences and contraindications to its consumption.
PL
Jakość soków owocowych i warzywnych ściśle regulowana jest unijnymi oraz krajowymi przepisami. Soki nie mogą zawierać substancji konserwujących, sztucznych barwników, aromatów czy substancji słodzących, a soki owocowe również dodanych cukrów. Podczas produkcji i utrwalania można stosować tylko metody fizyczne. W.sokach znajduje się wiele cennych mikro- i makroelementów, które niezbędne są do prawidłowego funkcjonowania organizmu człowieka i wspomagają go w walce z chorobami cywilizacyjnymi. To właśnie dlatego soki mogą mieć tak pozytywny wpływ na nasze zdrowie. Zgodnie z zaleceniami ekspertów szklanka soku może stanowić jedną z pięciu zalecanych porcji warzyw i owoców.
EN
The quality of fruit and vegetable juices is strictly regulated by both European and country regulations. Juices may not contain preservatives, artificial colourings, flavours or sweeteners. In the case of fruit juices, it is also not to added sugar allowed. Only physical methods can be used during production and preservation. Juices contain many valuable micro- and macroelements necessary for the proper functioning of our body and to supporting the fight against civilization diseases. This is why juices can have such a positive effect on our health. According to expert recommendations, a glass of juice can be one of the five recommended servings of vegetables and fruits.
EN
Especially in terms of energy costs, data on chemical, petrographical, and mineralogical analyses of ores or minerals can provide very important information for their production in the desired size distribution. Therefore, suitable crushing and grinding machines can be selected, taking into account the data affecting the comminution such as grain size, texture, metamorphism, and mineral or element contents. However, in most mineral processing plants, these data are rarely used to understand the response of ores or minerals to comminution. Analysis of the relationships between the chemistry, petrography, and mineralogy of ores and the breakage mechanism during crushing or grinding has been the subject of researchers in the comminution field in recent years. This study is a review of studies done so far on the relationships between the comminution and the chemical, petrographic, and mineralogical properties of different ores and minerals, and their effect on concentration.
EN
The radioactivity levels of natural radionuclides 226Ra, 232Th, and 40K in the rocks of Dakshina Kannada region of southern India were measured by NaI (Tl) gamma-ray spectrometer. The specific activities of 226Ra, 232Th, and 40K ranged from 4.2±0.4 to 74.5±1.7 Bq kg−1, 14.5±0.7 to 83.5±1.6 Bq kg−1, and 172±3 to 964±7 Bq kg−1 with the mean of 25.1±1.0 Bq kg−1, 36.1±1.0 Bq kg−1, and 502±5.0 Bq kg−1, respectively. The normality of the frequency distribution curves of 226Ra, 232Th, and 40K was tested using the Kolmogorov–Smirnov test. The radiological hazard indices were computed from the measured activity concentration of natural radionuclides in rocks and these were found to be within acceptable levels. To investigate the sources of radioactivity, the minerals involved in the rocks were detected using XRD and FTIR. The mineralogical studies reveal that the principal sources of gamma radiation in the study area are 232Th-rich phosphates and 40K-bearing feldspars.
EN
Vietnam's mining industry has a long history with mines distributed throughout the country. It has contributed significantly to national economic growth. However, it also causes negative impacts on the environment, thereby affecting sustainable development and mineral resource management. Therefore, mineral resource management is one of the most critical tasks of state management. The factors that directly affect this issue are the institutional system and state management tools by the law. State institutions are an essential tool to regulate behaviors and establish social orders and disciplines in all fields, including mineral resources management. This article presents the current law on managing and exploiting mineral resources to provide orientations and solutions to improve the state institution on these activities in Vietnam. Based on clarifying the theory of state institutions and analyzing the current legal document systems in Viet Nam, the paper emphasizes the role of appraisal in improving the quality of legal documents and perfecting state institutions.
PL
Polska należy do państw o dużych zasobach złóż udokumentowanych kopalin, co umożliwia ich długotrwałą eksploatację i zabezpieczenie potrzeb gospodarki, także dla przyszłych pokoleń.
EN
This study presents the optimization and validation of methods for the analysis of retinol, thiamine, niacin, pyridoxine, folic acid, cyanocobalamin, zinc, and iron in fortified kernels (coated and extruded) and in fortified rice. The analyses were performed by HPLC-UV/FLD/MS and ICP-OES. The optimized methods showed good resolution of the analyte peaks, excellent recovery (87–108%), reproducibility with relative standard deviation (SD) of analyte content between 1.8 and 11% and high correlation coefficient of the calibration curves (R2 > 0.997). Limit of detection was from 2.8 E-4 mg/kg for pyridoxine to 1.26 mg/kg for zinc and limit of quantification was from 9.2 E-4 mg/kg for pyridoxine to 4.21 mg/kg for zinc. Thereby the optimized methods demonstrated reliability and sensitivity in the detection and quantification of these micronutrients and that they are suitable for routine analysis of fortified kernels (coated and extruded) and fortified rice.
EN
It is likely that the beginnings of geological museology in Poland should be associated with the collecting movement of all kinds of souvenirs and wonders of nature, often referred to as curiosities or antiquity. In 1775, Michal Mniszech proposed the creation of a national museum (Museum Polonicum). The article mentions all significant collectors of geological exhibits, including Anna Jabłonowska as one of the main figures in the beginnings of museology in Poland. The so-called public and academic and some school collections are described. The article also pays attention to social initiatives regarding financing of natural museums, including geological ones.
PL
W artykule zaprezentowano wybrane zastosowania materiałów pochodzenia naturalnego oraz antropogenicznego w kilku gałęziach biotechnologii. Wśród materiałów naturalnych uwzględniono zeolity pochodzące z węgla kamiennego, węgiel brunatny, kalcyt, kwarc, piryt, hydroksyapatyt i żel krzemionkowy. Wśród materiałów syntetycznych opisano zastosowanie w biotechnologii struktur metaloorganicznych MOF, węgla aktywnego i nanorurek węglowych. Przykłady zastosowań wzbogacono o wyniki analiz strukturalnych tych materiałów, które przeprowadzono w ramach prac badawczych Instytutu Mechaniki Górotworu PAN.
EN
The article presents selected applications of materials of natural and anthropogenic origin in several branches of biotechnology. Natural materials include zeolites derived from hard coal, lignite, calcite, quartz, pyrite, hydroxyapatite and silica gel. Synthetic materials include the use of metal–organic framework MOF, active carbon and carbon nanotubes in the biotechnology. Examples of applications were enriched with the results of structural analyzes of these materials, which were carried out as part of the research work of the Strata Mechanics Research Institute of the Polish Academy of Sciences.
EN
Selective catalytic reduction with ammonia (NH3-SCR) is very efficient DeNOx technique. According to some problems with the commercial catalyst, novel one should be prepared. Hydrotalcites are potential precursors of the new catalysts of NH3-SCR. In this paper, several attempts to apply these materials in NH3-SCR are presented.
EN
Yerba mate is a source of biologically active substances. The aim was to determine whether the place of origin of Yerba and the brewing method have any influence on the levels of Ca, Mg and Fe and antioxidant activity of infusions. Samples were steeped in cold water (25o C) and hot water (three consecutive infusions with 85o C water). Infusions had a high antioxidant activity and high Mg level. The levels of elements and the antioxidant activity were influenced by the brewing method. There were no significant differences in the examined parameters depending on the country of origin. The results on the levels of elements and the antioxidant activity indicate that the most efficient brewing method was infusion in hot water. The highest levels of elements were found in first infusions, with the highest antioxidant activity in the third infusions.
EN
Several mineralogically, chemically and texturally diverse minerals and waste materials were selected for the testing of elemental mercury capture in exhaust gas, namely tyre char resulting from the burning of pyrolytic rubber tyres, class C fly ash, mesoporous material type MCM-41 and glauconite. Each material's mineralogical, chemical and textural characteristics were explored. In order to conduct experiments in conditions similar to those during the contact of sorbent with real coal exhaust fumes at a temperature of about 110-120°C, the experiments were carried out using a test device consisting of a furnace for burning powdered coals, a thermostatic cage for sorbent reactors and mercury gas analysers, which are able to measure and compare the effects of individual sorbents with exhaust gas. The study found that the best results for mercury sorption in the exhaust atmosphere were obtained for class C ash resulting from brown coal combustion.
PL
Rewolucyjne zmiany w postępowaniach o wydanie decyzji środowiskowych - nowe zasady ustalania stron postępowania, wydłużanie okresu ważności decyzji środowiskowej bez etapowania inwestycji, doręczenia przez obwieszczenie w przypadku nieruchomości o nieuregulowanym stanie prawnym, to korzystne rozwiązania wprowadzone Ustawą z dnia 19 lipca 2019 r. o zmianie ustawy o udostępnianiu informacji o środowisku i jego ochronie, udziale społeczeństwa w ochronie środowiska oraz o ocenach oddziaływania na środowisko oraz niektórych innych ustaw.
PL
Oznaczono zawartości podstawowych składników mineralnych (Na, K, Mg, Ca) oraz pierwiastków śladowych (Mn, Cu, Cr, Zn, Pb, Ni, Cd, Sb, As) w wybranych wodach butelkowanych dostępnych na polskim rynku. Do badań wyselekcjonowano 9 najpopularniejszych marek naturalnych wód mineralnych, 7 wód źródlanych oraz 6 wód leczniczych. Oznaczenia jonów nieorganicznych oraz jonów metali prowadzono z wykorzystaniem metody płomieniowej i grafitowej ASA (atomowa spektrometria absorpcyjna). Wykonano 2 serie oznaczeń. Na podstawie uzyskanych wyników dokonano analizy i oceny składu chemicznego w wytypowanej grupie wód butelkowanych.
EN
Contents of selected elements were detd. in mineral, spring and therapeutic waters by at. absorption spectrometry and compared to their permissible values in the relevant stds. The contents of Mn and Ni in the mineral and therapeutic waters were higher than the permissible ones.
20
Content available Kosmetyki mineralne
PL
Od tysiącleci minerały samodzielnie lub w mieszaninach używane były przez ludzi jako lekarstwa i kosmetyki. Przedstawione badania nawiązują do tradycji stosowania minerałów w nowoczesnej kosmetologii.
EN
Minerals or mixtures containing minerals were used during thousands years as cosmetics and or medicines. Presented investigation refer to tradition of use of minerals in modern cosmetology.
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