Environmental contamination with selenium is a major health concern. A few bacterial strains have been isolated that can transform toxic selenite to non-toxic elemental selenium only at low concentrations (0.001–150 mM) in recent past. We have previously reported isolation and characterization of few selenite-tolerant bacterial strains. These …

DOI: 10.1016/J.FCR.2013.06.010 Corpus ID: 84188143; Increasing Se concentration in maize grain with soil- or foliar-applied selenite on the Loess Plateau in China @article{Wang2013IncreasingSC, title={Increasing Se concentration in maize grain with soil- or foliar-applied selenite on the Loess Plateau in China}, author={Jianwei …

Selenite is found around the world, but the major deposits used for wands, charging plates, lamps and more come from Mexico and Morocco. Selenite has been used since ancient Egypt over 4000 years ago and was found in Tutankhamun's tomb. The 'Cave of Crystals' found in Chihuahua, Mexico contains some of the largest selenite crystals ever …

Gravity concentration has been the cornerstone for the recovery of gold for thousands of years but it also yielded to technological advances in areas such as flotation and cyanidation especially as the practice of mining complex gold ores grew. The advent of enhanced gravity technologies such as the Falcon, Kelsey, Knelson and MGS …

In conclusion, sodium selenite low-concentration applications could be an exogenous regulator to improve rice oxidation resistance in rice production. Effects of sodium selenite application on MDA ...

In this study, we demonstrated that sodium selenite with high doses (> or = 10 (-3) M) were potent in inducing a contracture type effect on heart and smooth muscles. Selenite (Se), at a concentration of 10 (-3) M, caused a contracture effect in heart preparations. Also, low Se concentrations did not have any significant effect.

The proposed population model is the first of its kind to characterize the concentration–time course of selenite; the model may be used to suggest (1) dosing regimens and (2) optimal study designs for new clinical studies evaluating the efficacy of selenite as monotherapy or in combination therapy for treatment of advanced or …

Growth of Bacillus sp. SL and selenite reduction. Effects of different selenite concentrations were measured the growth kinetic or the selenite reduction rate in Bacillus sp. SL were measured upon different selenite concentrations exposure. As shown in Fig. 1A, the growth of strain SL in the 3 mM selenite treatment group was higher than that of …

mineral. Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. They …

The specific gravity of gypsum is approximately 2.3, indicating it is relatively light among minerals. This low specific gravity is due to the water content in its structure and its overall ...

When compared with Na selenite, Se-chitosan increased the Se concentration in the yolk and decreased level of MDA in stored egg yolk (P < 0.01). When compared with Na selenite, Se-chitosan reduced coliforms (P < 0.01), increased lactic acid bacteria, and the lactic acid bacteria/coliform ratio (P < 0.05).

Selenite is transparent to translucent with a hardness of 1.5-2.0, perfect cleavage in one direction, vitreous to pearly luster, and a specific gravity of 2.3-2.4. It occurs mainly in chemical-sedimentary, marine-evaporite …

When the fungi were grown on agar-solidified media, radial fungal growth in the presence of 0.1 mM Se(IV) was repressed compared to Se-free cultures for all six organisms (Fig. 1; Supplementary Figs. 1–3; Supplementary Table 1).In the presence of Se(IV), increasing the concentration of organic carbon led to more radial fungal growth …

Specific Gravity: 2.3 - 2.4: Luster: Vitreous to pearly: Cleavage: 1,1 - micaceous ; 2,2: Fracture: Uneven: Tenacity: Sectile and slightly flexible: Other ID Marks: Often …

Selenite Gemstone is a beautiful gem that belongs to the gypsum mineral family and possesses distinct physical and metaphysical properties. Selenite commonly exhibit a translucent or transparent appearance, with colors ranging from colorless to white and occasionally pale shades of yellow, orange, or brown. ... Specific Gravity: 2.30 to …

Gravity concentration has historically been applied to particles in the nominal range of 0.1 to 1.0 mm, and of course also at larger sizes beyond the scope of this paper. Over this range of particle size, the terminal velocity varies by about an order of magnitude. In contrast, over the range from 0.01 to 0.1 mm the terminal velocity varies by ...

Selenite's ability to enhance mental clarity and insight has been a game-changer for me. I find that it boosts my focus and problem-solving abilities, helping me navigate complex situations with ease. It also supports concentration and decision-making, making it an indispensable tool in my personal and professional life.

This indicated that selenate application to soil caused much higher concentration and more increment of Se in plants than selenite. To the contrary, the result from a hydroponic experiment showed that Se accumulation in maize following selenite treatment was always higher than that with selenate (Longchamp et al., 2013). This …

Selenite healing properties can help with physical, emotional, and spiritual balance and issues. It has healing powers to help with physical ailments and emotional issues. It is also used in Energy Healing and Chakra balancing. Selenite healing crystal therapies include clearing blockages, stabilizing emotions, and bringing flexibility.

Based on our results, we recommend a selenite concentration between 0.03 and 0.1 mM to maintain the balance between Se enrichment and mycelial productivity. This is in agreement with the optimal selenite concentration (0.06 mM) proposed by Ma et al. (2012) for the soluble organic Se accumulation during the fermentation of F. velutipes …

Characteristics of gravity concentration: (1) The processable materials have expanded from lump/coarse to fine/slime grained materials, and the lower limit of fed ore particle size during ore separation is 20 μm; (2) in addition to gravity, other forces are employed in order to intensify the gravity concentration process, e.g., the centrifugal …

The interaction showed that, 0.6 mg Se-chitosan/kg increased albumen Se concentration and decreased the level of malondialdehyde (MDA) in fresh egg yolk compared with 0.3 and 0.6 mg Na selenite/kg (P < 0.05). When compared with Na selenite, Se-chitosan increased the Se concentration in the yolk and decreased level of …

Mental Clarity and Focus: Selenite's energy is believed to enhance mental clarity, improve concentration, and sharpen focus. It can assist in clearing mental fog, promoting mental acuity, and aiding in decision-making processes. Emotional Healing and Balance: Selenite can help balance and stabilize emotions.

Gravity Concentrators. For some decades now, the use of gravity separation techniques to recover valuable minerals has been relatively neglected in comparison to the developments in flotation and hydrometallurgical technology. However, more recently, there has been a resurgence of interest in gravity separation, especially …

Sodium selenite low-concentration applications could be an exogenous regulator to improve rice oxidation resistance in rice production and depressed the antioxidant enzyme activities and caused MDA over-production in Xiangyaxiangzhan. Effects of sodium selenite treatments on rice were investigated using two known cultivars Xiangyaxiangzhan and …

Again, since the lower selenite concentrations had the multiple types of effects on the contraction parameters, the high selenite concentration (10 -3 M) had a contracture-type effect under both experimental conditions. …

Selenite forms through a process known as sedimentary precipitation in evaporite deposits. Here is a step-by-step explanation of the formation of selenite: 1. Source of Calcium and Sulfate: The formation of selenite … See more

Introduction. Gravity concentration is a process to concentrate the mineral of interest (in this case gold) using the difference of specific gravity of gold and gangue minerals. The specific gravity of gold is 19.5 and the specific gravity of quartz (the common gangue mineral associated with gold) is 2.65 (i.e., gravity concentration works ...

Nitric oxide (NO) plays a key role in regulating a wide range of physiological and biochemical processes. This study investigated possible effects of NO, which was supplied by sodium nitroprusside (SNP), NO donor, on selenium (Se) concentration, Se species within roots, activities and gene transcription of selenite uptake, and metabolism-related …

Selenite. Selenite, satin spar, desert rose, and gypsum flower are four varieties of gypsum; all four varieties show obvious crystalline structure. The four "crystalline" varieties of …

In the present study, Labeo rohita an Indian major carp were exposed to sublethal concentration of Se (sodium selenite) for 35days and certain hematological, biochemical and enzymological parameters were estimated. The median lethal concentration of waterborne sodium selenite (Na2SeO3) to L. rohita was found to be …

Gravity Concentration — the separation of minerals by virtue of specific gravity — is one of the oldest forms of mineral processing. Whilst its relative importance has declined in the twentieth century, the high cost of alternative processes, along with the development of a range of high capacity devices has led to something of a renaissance of gravity …

The 24 h inhibitory concentration 50 (IC 50) of selenite in PLHC-1 cell line was found to be 237 μM. Flow cytometery data showed that selenite exposed cells promote apoptotic and necrotic mediated cell death when selenite concentrations were ≥10 μM compared to control. Selenite exposure was associated with a significant increase of …