The oxidative polymerization of 5,6-dihydroxybenzothiophene (DHBT), the sulfur analog of the key eumelanin building block 5,6-dihydroxyindole (DHI), was investigated to probe the role of nitrogen in eumelanin build-up and properties. Unlike DHI, which gives a typical black insoluble eumelanin polymer on oxidation, DHBT is converted to a grayish amorphous solid (referred to as thiomelanin) with ...

A 53-year-old man, who was a recurrent stone former and diabetic, presented with left flank pain, pyuria, and fever. He had undergone multiple interventions for removal of the left kidney stones and retained ureteral double-J stent. All blood and urine investigations were unremarkable and negative for fungus and tuberculosis. Computed tomography scan revealed an edematous left kidney with poorl...

Soluble functional (co)polyimides are of great interest in the area of separation processes or optical applications, due to their excellent mechanical-, thermal- and optical properties, their superior processability and the ability to adapt their properties to a wide range of special applications. Therefore, two series of novel (co)polyimides containing fluorinated sulfur- and carboxylic acid g...

Halitosis means an unpleasant odor of the expired air, regardless of the source of this odor. The foul breath originating from the oral cavity itself is termed as oral malodor and it is usually the main contributor of unpleasant breath in an otherwise healthy individual. The most predominant causes of halitosis are gingivitis, periodontitis, and tongue coating. However, several non-oral patholo...

The application of controlled-release fertilizers (CRF) at the time of planting offers a means to improve the establishment of forest tree seedlings. As compared to conventional fertilizers, the gradual pattern of nutrient release from CRF may better coincide with plant needs, minimize leaching, and improve fertilizer use efficiency. Many different CRF types are available and products differ in...

Corrosion and subsequent waterwall wastage has been a significant problem for coal-burning power companies since low NOx burner conditions have been implemented in their furnaces. In order to reduce the amount of waterwall corrosion, coatings for the boiler tubes, such as weld overlay claddings, are currently being pursued. Iron-aluminum based coatings are presently being studied as possible co...

Mixtures of mineral aggregate and modified sulfur, wherein the modified sulfur functions as a binder, are termed sulfur concretes or sulfur mortars depending on the form of the mineral aggregate. Molten sulfur reacted with olefinic additive, at 130-140 ºC, and then mixed with preheated filler and aggregates. Sulfur mortar samples were prepared by mixing 32 % molten sulfur, 10 % filler and 5...

Corrosive Sulfur in transformer oil has been the cause of high profile transformer failures in recent years. Oil treatments consisting of copper passivators have been only partially effective. DSI has discovered a multi-step method that has been proven to change oils with corrosive sulfur into non-corrosive status, as well as significantly slowing oxidation and ageing of insulating oil and pape...

Room-temperature sodium–sulfur (RT/Na–S) batteries are regarded as promising large-scale stationary energy storage systems owing to their high density and low cost well the earth-abundant reserves of sodium sulfur. However, diffusion polysulfides sluggish kinetics conversion reactions still major challenges for application. Herein, we developed a powerful functional separator inhibit shuttle ef...

The rechargeable aluminum-sulfur (Al-S) battery is a promising alternative-energy storage device with high energy density and made of cheap raw materials. However, Al-S batteries face several obstacles, especially the shuttle effect. Herein, binder-free S@Ti3C2Tx sandwich structure film uniform sulfur dispersion was designed. two-dimensional (2D) layered material Ti3C2Tx not only has function b...