Importance of hydrogen sulfide as the molecular basis of heterosis in hybrid Brassica napus: a case study in salinity response

Hydrogen sulfide is a notorious agent known to cause serious injuries in the occupational field. We are going to discussa case of a 20 years old male working in a effluent treatment plant in Savar, Bangladesh who accidentally entered thefume room and was exposed to the toxic gas. He lost consciousness and was brought to our care from a local hospitalafter endotracheal intubation condition. He was found in state of unconsciousness grade III on admission to our ICU.His brain CT scan revealed diffuse cerebral edema. Chest X-ray revealed finding suggestive of diffuse pneumonitis.Cardiology evaluation suggested Toxic cardiomyopathy as his high sensitive Troponin I was very high on admission (2037ng/L). Supportive care was given in the form of mechanical ventilation, antibiotics, anticonvulsant andanti-ischemic medications. Patient regained consciousness on day 10 after admission and gradually improvedclinically. By the end of the month of stay in hospital he was significantly improved. Bangladesh Crit Care J September 2019; 7(2): 113-115

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Problems of Mechanized Tunneling In Gassy Ground Conditions a Case Study: Nousoud Water Transmission Tunnel

International Journal of Geography and Geology ◽

10.18488/journal.10/2014.3.8/10.8.101.113 ◽

2014 ◽

Vol 3 (8) ◽

pp. 101-113

Author(s):

Naser Tali ◽

Gholam Reza Lashkaripour ◽

Mohamad Ghafoori ◽

Naser Hafezimoghadas

Keyword(s):

Hydrogen Sulfide ◽

Dissolved Gas ◽

Loss Of Life ◽

Methane Gas ◽

Project Costs ◽

Ground Conditions ◽

Water Transmission ◽

Working Efficiency ◽

Geotechnical Studies

Current advances in science, followed by development of excavation equipments technology resulted in growth of tunnelling projects for different purposes. In spite of conducting exploratory studies prior to these projects, in some cases due to of impassable paths, the studies are limited to certain areas. Hence, during geotechnical studies, it is possible that all problems facing tunnelling not be detected. Therefore, lack of awareness of these conditions can result in a lack of proper planning and consequently lead to problems during the projects. Due to the lack of knowledge and consequently not predicting and planning the projects, drilling of the second sector of Nousoud water transmission tunnel, -26 km long- has been faced with many problems including emission of hydrogen sulfide and methane gas and drainage of high volumes of water containing dissolved gas into the tunnel, which has led to the loss of life, loss of working efficiency, as well as increased project costs. In this study, problems occurred in this project, reasons behind them will be addressed; and the solutions to these problems will be mentioned. The results of the study have shown that oil-bearing formations of the region and the immigration of gases coming from these formations have let the gas entered into the tunnel. In addition, due to the high solubility of hydrogen sulfide and methane gas in water on one hand, and hydrated formations with high permeability on the other hand, caused the influx of large quantities of water and therefore the concentration of these gases in the tunnel.

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CRISPR/Cas9-mediated genome editing in Brassica

Genome editing for precision crop breeding - Burleigh Dodds Series in Agricultural Science ◽

10.19103/as.2020.0082.23 ◽

2021 ◽

pp. 403-420

Author(s):

Cheng Dai ◽

◽

Xia Tian ◽

Chaozhi Ma ◽

◽

...

Keyword(s):

Brassica Napus ◽

Genome Editing ◽

Plant Species ◽

Applied Research ◽

Biotechnological Applications ◽

Efficient Tool ◽

Multiple Loci ◽

Basic And Applied Research ◽

Genome Modifications

CRISPR/Cas9 is a valuable tool for both basic and applied research that has been widely applied to different plant species. In this chapter, we reviewed the application of CRISPR/Cas9 genome editing toolkit in Brassica crops. We also provided a case study in Brassica napus. Collectively, our results demonstrate that CRISPR/Cas9 is an efficient tool for creating targeted genome modifications at multiple loci in B. napus. These findings open many doors for biotechnological applications in oilseed crops.

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Taste and odour removal from an urban groundwater establishment – a case study

Water Science & Technology ◽

10.2166/wst.2000.0302 ◽

2000 ◽

Vol 42 (1-2) ◽

pp. 123-128 ◽

Cited By ~ 5

Author(s):

E. Ortenberg ◽

L. Groisman ◽

C. Rav-Acha

Keyword(s):

Hydrogen Sulfide ◽

Chlorine Dioxide ◽

Urban Groundwater ◽

Partial Solution ◽

Deep Groundwater ◽

Advantages And Disadvantages ◽

Water Characteristics ◽

Chemical Oxidants ◽

Odour Removal

A deep groundwater well was established in a village near Tel-Aviv, in order to supply drinking water for its 30,000 inhabitants. Although all water characteristics were within the range permitted by the Israeli regulations, operators received complaints about a funny taste and a rotten-egg odour in the water. This was attributed to the presence of 0.38 mgL–1 hydrogen sulfide. Removing the odour by the usual method of aeration was impossible because of the populated surroundings. Therefore it was decided to examine chemical oxidants for taste and odour removal. A treatment with 8 mgL–1 of chlorine successfully oxidized hydrogen sulfide but the complaints continued. This was attributed to the formation of elemental sulfur, whichis converted into polysulfide that may hydrolyze to regenerate the odourous hydrogen sulfide. Treatment with 2 mgL–1 of chlorine dioxide successfully eliminates odour completely, but produces chlorite and chlorate which are above the permitted levels. A partial solution to this problem was found by a consequential treatment with 2 mgL–1 of ClO2 for 10 min. followed by 1.5 mgL–1 of chlorine (30 min.). In this case the chlorite is reduced substantially to be within the permitted level. In addition, such treatment regenerates some of the chlorine dioxide thereby increasing its residual. The odourous H2S can also be eliminated with 3 mgL–1 of ozone. Advantages and disadvantages of the above treatments are discussed.

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