BACKGROUND Acute variceal bleeding (AVB) is a life-threatening complication of liver cirrhosis or less commonly splenic vein thrombosis. Pharmacological and endoscopic interventions are cornerstones in the management of variceal bleeding but may fail in 10 - 15 % of patients. Rescue therapy with balloon tamponade (BT) or transjugular intrahepatic portosystemic shunt (TIPS) may be required to co...

For high-quality steel smelting, stagebystage production is required, which has a complex of metallurgical units capable for producing products with high performance properties and low content harmful impurities. One the impurities hydrogen, so it important to limit its in metal. To ensure specified hydrogen content, metal outoffurnace treatment at Converter Shop No. 2 (CS2) PJSC “Novolipetsk M...

Foundries for the metal-casting industry plays a vital role to generate byproducts such as used foundry sand. Metal foundries use large amounts of the metal casting process. Foundries successfully recycle and reuse the sand many times in a foundry but by using repeated usage of Used foundry-sand vary due to the type of equipment used for foundry processing, the types of additives, the number of...

We report a case of a 51-year-old woman with an esophageal lichen planus (ELP) stricture refractory to medical therapy and endoscopic stricture dilation. A multidisciplinary decision was made to place an esophageal fully covered metal stent. The stent was removed 6 weeks later and the patient is doing well on 3-month follow up. We show that a removable esophageal stent is an option after standa...

Introduction: Calcium-aluminum-rich inclusions (CAIs) from the metal-rich (CH/CB-like) carbonaceous chondrite Ish-eyevo are mineralogically pristine and show no evidence for postcrystallization alteration [1]. Many of them are composed of very refractory minerals, such as hibonite (CaAl 12 O 19), grossite (CaAl 4 O 7), aluminum-rich pyroxene, and perovskite (CaTiO 3). We will present oxygen iso...

Surface properties of refractory ceramic transition metal nitride thin films grown by magnetron sputtering are essential for resistance towards oxidation necessary in all modern applications. Here, typically neglected factors including exposure to residual process gases following the growth and the venting temperature Tv, each affecting the surface chemistry, are addressed for the first time. I...

Copyright and Moral Rights for the articles on this site are retained by the individual authors and/or other copyright owners. For more information on Open Research Online's data policy on reuse of materials please consult the policies page. Introduction: Ungrouped achondrite NWA 4518 is an ultramafic polymict breccia with abundant FeNi-metal. The silicate chemistry of NWA 4518 is similar to th...

Understanding the evolution of metal in protoplanetary disk is necessary to constrain first steps metal-silicate segregation and early stages disk. We measured siderophile elemental compositions (PGE, Ni, Co, Fe, Cu, Ga, Ge) individual grains H ordinary chondrites by laser ablation inductively coupled plasma mass spectrometry investigate their formation. analyzed unequilibrated (H3) processes a...

silica refractory bricks are used especially in the metallurgical industries, due to desirableproperties such as particularly their high melting point and their rigidity and strength at hightemperatures. in this research, different amount of sic were added to silica refractory containingdifferent binders such as borax, boric acid, calcium nitride, sodium tri poly phosphate, sodiumhexametaphosph...

background: the main purpose of the current study was to determine the effect of treating helicobacter pylori (hp) infection on seizure frequency in patients with refractory epilepsy. methods: a small sample of adult patients above 18 years of age with a diagnosis of refractory epilepsy was studied at the outpatient epilepsy clinic at shiraz university of medical sciences, from january 2009 thr...