- MeSH
- horké prameny * MeSH
- lázně * klasifikace MeSH
- příroda MeSH
- síra terapeutické užití MeSH
- Geografické názvy
- Česká republika MeSH
- MeSH
- balneologie MeSH
- lidé MeSH
- minerální vody * terapeutické užití MeSH
- přírodní prameny MeSH
- urologické nemoci * prevence a kontrola terapie MeSH
- Check Tag
- lidé MeSH
- Geografické názvy
- Česká republika MeSH
- MeSH
- horké prameny * mikrobiologie MeSH
- sinice izolace a purifikace MeSH
- Geografické názvy
- Bulharsko MeSH
- MeSH
- balneologie MeSH
- dějiny 19. století MeSH
- lázně MeSH
- lidé MeSH
- minerální vody * terapeutické užití MeSH
- přírodní prameny MeSH
- Check Tag
- dějiny 19. století MeSH
- lidé MeSH
- Publikační typ
- biografie MeSH
- historické články MeSH
- O autorovi
- Mattoni, Heinrich Kaspar, 1830-1910 Autorita
A low-permeability locality with heterogeneous geology contaminated primarily by tetrachloroethene (PCE) present partially in the free phase in the unsaturated zone was treated on a pilot scale via direct push pneumatic fracturing combined with the hydraulic delivery of a remediation suspension consisting of milled iron, sulphidated nanosized zerovalent iron and sand in guar gum solution. Afterwards, a whey solution was injected into the fractures as a carbon source for bacteria. The unsaturated and saturated zones were treated. Long-term monitoring of the groundwater revealed that the abiotic reduction of PCE and trichloroethene was the dominant remediation processes for several months after the injections. A complex microbial consortium was developed that was capable of effective, long-term chlorinated ethenes (ClE) dechlorination. The consortium consisted mainly of Dehalococcoides but also of other anaerobic bacterial strains capable of partial dechlorination of ClE, including the sulphate-reducing bacteria; Geobacter and Desulfitobacterium. The average chlorine number in the groundwater decreased from 3.65 to 1.38 within 2.5 years after the injections, while the average ClE concentration increased from 13.5 to 31.5 mgL-1 because of the substantial acceleration of the ClE mass-transfer to the groundwater caused by the treatment. The remediation processes remained fully active for 2.5 years.
Léčivé i stolní minerální vody mají v prevenci i léčbě nemocí močových cest nezastupitelné místo. Pitím léčivých minerálních vod dochází ke zvýšení diurézy, což působí zvýšené vylučování celkového množství vylučovaných látek včetně močových krystalů, drobných kaménků, bakterií, epitelií, hlenu apod. Řada těchto vod vzhledem ke svému složení ovlivňuje pH moče, a to zvláště na stranu alkalickou, obsahem některých prvků působí litoprotektivně a řada z nich působí i protizánětlivě (diuretickým efektem a přítomností některých prvků a hydrogenuhličitanu). Je vhodné odlišit minerální vody pro léčebné využití (léčivé minerální vody), které mají prokázaný terapeutický efekt na lidský organismus, od minerálních vod prostých (stolních), které mají na lidský organismus prokazatelné fyziologické účinky a jsou prospěšné pro udržení zdraví a prevenci poruch funkcí organismu, nemají však vyloženě léčivé účinky. Léčivé minerální vody by se neměly pít ve větším množství bez přestávky, na rozdíl od stolních minerálních vod, které lze podávat k pití i dlouhodobě bez obav z nežádoucích účinků. V článku jsou uvedeny podrobněji nejdůležitější a nejznámější české léčivé minerální vody a prameny vhodné pro prevenci a léčbu nemocí močových cest.
Medicinal as well as table mineral waters have an irreplaceable role in the prevention and treatment of urinary tract disease. Drinking medicinal mineral waters results in increased diuresis, which leads to increased elimination of the total amount of substances excreted, including urine crystals, small calculi, bacteria, epithelia, mucus, etc. Given their composition, a number of these waters affect urine pH, particularly toward the alkaline side, have a lithoprotective effect due to the content of some elements, and many exert anti-inflammatory activity (due to a diuretic effect and the presence of some elements and bicarbonate). It is advisable to distinguish mineral waters for medicinal purposes (medicinal mineral waters) which have been shown to have a therapeutic effect on the human body from plain (table) mineral waters which have clear physiological effects on the human body and are beneficial for staying healthy and preventing body function impairments, but without having strictly therapeutic effects. Medicinal mineral water should not be drunk in large amounts without interruption, unlike table mineral water that can be served to drink even in the long term with no fear of adverse effects. The article provides a detailed overview of the most important and best-known Czech medicinal mineral waters and springs suitable for the prevention and treatment of urinary tract disease.
- MeSH
- balneologie metody MeSH
- lidé MeSH
- minerální vody * terapeutické užití MeSH
- přírodní prameny MeSH
- urologické nemoci * prevence a kontrola terapie MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- přehledy MeSH
- Geografické názvy
- Česká republika MeSH
Fungi are considered to be the most resilient and economically important microbial community that can easily survive and optimally grow under a wide range of growth conditions. Thermophilic fungi from the geothermal sources have been less pondered upon and lie unexplored. Here, a microbiome approach was conducted to understand the concealed world of the environmental mycobiota from the two hot springs of North Sikkim district located in North-east India. The solfataric muds from the hot springs were analyzed. In both the samples, on the basis of genus level classification, genus Fusarium had the highest abundance followed by Colletotrichum, Pochonia, Pyricularia, Neurospora, etc. Analyzing the predicted genes, the functional proteins of New Yume Samdung mycobiome were found to be dominated by the genera Fusarium (22%), Trichoderma (12%), and Aspergillus (11%), whereas in the case of Old Yume Samdung, it was dominated by the genera Aspergillus (11%), Saccharomyces (6%), and Fusarium (5%). Interestingly, in the studied mycobiome, environmental yeasts were also detected. From the functional metagenomics, sulfate adenylatetransferase (SAT) proteins for sulfur assimilation were found in some of the fungal reads. Toxin protein reads such as AM-toxin biosynthesis proteins, AF-toxin biosynthesis proteins, Gliotoxin biosynthesis proteins, and aflatoxin biosynthesis proteins were detected in the mycobiomes.
- MeSH
- biodiverzita * MeSH
- horké prameny * mikrobiologie MeSH
- houby * fyziologie MeSH
- metagenomika MeSH
- mykobiom * fyziologie MeSH
- Publikační typ
- časopisecké články MeSH
- Geografické názvy
- Sikkim MeSH
High concentrations of naturally-occurring and man-accentuated boron in groundwater possess a potential threat to the health and well-being of humans worldwide. In Bangladesh, only a few studies focused on the health risks of boron-containing groundwater. Therefore, the present study investigated the spatiotemporal distribution of boron concentrations in groundwater and its associated health risks in the coastal districts of Bangladesh. A total of 268 samples from the shallow and deep wells during the wet and dry season (137 and 131 samples, respectively) were collected to determine the level of boron concentrations and health risk status. The groundwater boron concentrations ranged from 0 to 4.10 mg/L with an average concentration of 0.68 mg/L, which was much lower than the WHO and the values of Bangladesh drinking water standard guideline. The boron concentrations in the shallow wells override the deep ones with insignificant seasonal variation. Boron contamination affected 10% of the shallow wells in the wet season and only 6% of them in the dry season, whereas only 1% of deep wells exceeds the WHO guideline values of 2.40 mg/L during the wet and dry season, respectively. The human health risk of boron was determined by computing estimated daily intake (EDI) and hazard quotient (HQ) values for infants, children, teenagers, and adults. The average HQ value delimitated that children have high risk followed by teenagers, adults, and infants. About 90-95% of the studied samples were free from boron contamination because of having HQ values < 1 and the rest of the samples possess a high risk for children. For the overall study area, the deep wells were found safer than the shallow wells, which were more susceptible to boron contamination aided by localized freshwater inputs.
- MeSH
- bor MeSH
- chemické látky znečišťující vodu * analýza MeSH
- dítě MeSH
- dospělí MeSH
- hodnocení rizik MeSH
- kojenec MeSH
- lidé MeSH
- mladiství MeSH
- monitorování životního prostředí MeSH
- podzemní voda * MeSH
- Check Tag
- dítě MeSH
- dospělí MeSH
- kojenec MeSH
- lidé MeSH
- mladiství MeSH
- mužské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- Geografické názvy
- Bangladéš MeSH
Over the past two decades, the use of nanoscale zero-valent iron (nZVI) has emerged as a standard method of contaminated groundwater remediation. The effectiveness of this method depends on key intrinsic hydrogeological parameters, which can affect both reactivity of the nanoparticles and their migration in the aquifer. In the case of low hydraulic permeability, the migration of nanoparticles is limited, which negatively influences remediation. An application of nZVI reinforced with a DC electric field led to a significant increase in the efficiency of remediation, as demonstrated by long-term monitoring at a former industrial site in Horice (Czech Republic). For the method testing, a 12 × 9 m polygon was defined around well IS4, where the original contamination was predominantly composed of DCE (7300 μg/l), and with a total concentration of chlorinated ethenes of 8880 μg/l. During the first stage of the activities, 49 kg of nZVI was injected and monitored for two years. Subsequently, the electrodes were installed, and for three years, the synergistic action of nZVI within an applied DC field was monitored. Based on 32 monitoring campaigns performed over the six years, the combined method was compared with an application of the only nZVI in technical, environmental and economic terms. Technically, the method requires annual reinstallation of anodes as a result of their oxidative disintegration. Environmentally, the method provides significantly improved chlorinated ethane reduction, remediation of low permeable zones, and extended efficiency. Economically, the method is five times cheaper when compared to the nZVI used alone.
- MeSH
- chemické látky znečišťující vodu analýza chemie MeSH
- ethyleny analýza chemie MeSH
- halogenace MeSH
- kovové nanočástice chemie MeSH
- podzemní voda MeSH
- regenerace a remediace životního prostředí * MeSH
- železo MeSH
- Publikační typ
- časopisecké články MeSH
- Geografické názvy
- Česká republika MeSH
The primordial origin of abiotic nitrogen fixation, which is not dependent on prokaryotes, reflects the importance of available nitrogenous compounds as an essential requirement for the emergence of life and evolutionary biodiversity. It has been hypothesized that synthesis of oxidized nitrogen in the form of nitrate (NO3-) and nitrite (NO2-), occurred in the prebiotic anoxic Hadean atmosphere. The sustained influx of atmospheric NO3- and NO2- into prebiotic Hadean oceans have been proposed to provide the essential substrates for abiotic synthesis of compounds such as ammonia (NH3) within oceanic alkaline hydrothermal vents in the seafloor. Because NH3 is an essential chemical precursor for nitrogen-containing molecular components of proteins and nucleic acids, abiotic production in high concentrations within Hadean oceanic alkaline hydrothermal vents is required for the emergence of diverse life forms. The chemical evolution of nitrogenous compounds includes the functional development of alkaloids. This commentary aims to critically discuss the possible origin of nitrogen-containing alkaloids and evolutionary processes in higher organisms, including the diverse biomedical mechanisms involved.
- MeSH
- alkaloidy * MeSH
- biodiverzita * MeSH
- biologická evoluce * MeSH
- hydrotermální průduchy * MeSH
- oceány a moře MeSH
- Publikační typ
- úvodníky MeSH
- Geografické názvy
- oceány a moře MeSH
