Search Results - "Boyanov, B."

Treatment approach in malignant left-bowel obstruction using self-expandable metallic stent: a case series by Boyanov, Nikola B., Shtereva, Katina T., Sergeev, Sergey K., Madzharova, Katerina I., Stoynov, Nikolay A., Dimitrova-Yurukova, Desislava D.

“…Endoscopic self-expandable metallic stent (SEMS) decompression in patients with bowel obstruction due to colon carcinoma has been practiced for over two…”
Get full text

Optimization of the methanol oxidation over iron–molybdate catalysts by Ivanov, K., Dimitrov, D., Boyanov, B.

“…The oxidation of methanol on industrial iron–molybdenum catalysts was investigated with a view to shed more light on the possibilities to optimize the process…”
Get full text

Dielectric properties of polycrystalline mixed nickel–zinc ferrites by Ranga Mohan, G., Ravinder, D., Ramana Reddy, A.V., Boyanov, B.S.

“…Dielectric properties such as dielectric constant ( ε′), dielectric loss tangent (tan δ) and complex dielectric constant ( ε″) has been investigated in the…”
Get full text

Thermal study and mechanism of Ag2S oxidation in air by Živković, D., Sokić, M., Živković, Ž., Manasijević, D., Balanović, Lj, Štrbac, N., Ćosović, V., Boyanov, B.

“…The results of thermal study and mechanism of the oxidation process of synthetic Ag 2 S in air are presented in this article based on the comparative analysis…”
Get full text

Electrical conductivity of Co–Zr substituted hexagonal barium ferrites by Venkateshwarlu, Ch, Ashok, Ch, Rao, B. Appa, Ravinder, D., Boyanov, B.S.

“…The electrical conductivity of Co–Zr substituted barium hexagonal ferrites of different compositions has been investigated as a function of composition and…”
Get full text

Some tetrazolium salts and their ion-association complexes with the molybdenum(VI) — 4-nitrocatechol anionic chelate: DTA and TGA study by Gavazov, K., Lekova, V., Boyanov, B., Dimitrov, A.

“…Several commercially available 2H-tetrazolium salts (TS) {2,3,5-triphenyl-2H-tetrazolium chloride (TTC), 3-(1-naphthyl)-2,5-diphenyl- 2H-tetrazolium chloride…”
Get full text

Some tetrazolium salts and their ion-association complexes with the molybdenum(VI) - 4-nitrocatechol anionic chelate by Gavazov, K, Lekova, V, Boyanov, B, Dimitrov, A

“…Several commercially available 2H-tetrazolium salts (TS) {2,3,5-triphenyl-2H-tetrazolium chloride (TTC), 3-(1-naphthyl)-2,5-diphenyl- 2H-tetrazolium chloride…”
Get full text

Kinetic investigation of silver sulfide phase transformations by Živković, D., Ćosović, V., Živković, Ž., Štrbac, N., Sokić, M., Talijan, N., Boyanov, B., Mitovski, A.

“…The results of kinetic investigation of silver sulfide (Ag2S) phase transformations–monoclinic (α) to body-centered-cubic (β) and body-centered-cubic to…”
Get full text

High-frequency dielectric behaviour of polycrystalline zinc substituted cobalt ferrites by RAMANA REDDY, A. V, RANGA MOHAN, G, RAVINDER, D, BOYANOV, B. S

“…The dielectric constant (ɛ′) and complex dielectric constant (ɛ′′) of zinc substituted cobalt ferrites have been measured at room temperature in the high…”
Get full text

Behavior of arsenic in hydrometallurgical zinc production and environmental impact by Peltekov, A.B., Boyanov, B.S., Markova, T.S.

“…The presence of arsenic in zinc sulphide concentrates is particularly harmful, because it creates problems in zinc electrolysis. The main source of arsenic in…”
Get full text

Electrical conductivity of Ba–Co–Ti hexagonal ferrites by Ravinder, D, Shalini, P, Mahesh, P, Koteswara Rao, K, Vithal, M, Boyanov, B.S

“…The electrical conductivity of cobalt and titanium substituted barium hexagonal ferrites of different compositions has been investigated as a function of…”
Get full text

Laryngeal pathology detection by means of class-specific neural maps by Hadjitodorov, S., Boyanov, B., Teston, B.

“…Most of the existing systems and methods for laryngeal pathology detection are characterized by a classification error. One of the basic problems is the…”
Get full text

Electrical transport properties of zinc-substituted cobalt ferrites by Ramana Reddy, A.V, Ranga Mohan, G, Boyanov, B.S, Ravinder, D

“…Electrical conductivity ( σ) and thermoelectric power ( s) studies of zinc-substituted cobalt ferrites are undertaken as a function of composition and…”
Get full text

Elastic behaviour of Cu–Zn ferrites by Ravinder, D., Kumar, K.Vijaya, Boyanov, B.S.

“…The composition dependence of elastic properties of mixed Cu–Zn ferrites are studied using ultrasonic pulse transmission technique at 1 MHz. The values of…”
Get full text

High temperature thermoelectric power studies of cobalt and titanium substituted barium hexagonal ferrites by Ravinder, D., Shalini, P., Mahesh, P., Boyanov, B.S.

“…Thermoelectric power studies of cobalt and titanium substituted barium hexagonal ferrites of various compositions were investigated from room temperature to…”
Get full text

Kinetics and mechanism of Sb2S3 oxidation process by Živković, Ž, Štrbac, N, Živković, D, Grujičić, D, Boyanov, B

“…This paper presents the results of experimental investigations of Sb2S3 oxidation process in an air atmosphere. Methods of investigation, including DTA–TG–DTG…”
Get full text

Purification of zinc sulfate solutions from cobalt and nickel through activated cementation by Boyanov, Boyan S., Konareva, Victoria V., Kolev, Nikolai K.

“…The influence of reaction time, temperature, zinc dust quantity and concentration of copper and antimony activators has been studied on the process of…”
Get full text

Application of 4-(2-pyridylazo)resorcinol for flotation-spectrophotometric determination of iron by Toncheva, Galya K, Gavazov, Kiril B, Georgieva, Zlatka G, Dospatliev, Lilko K, Peltekov, Alexander B, Boyanov, Boyan S

“…Optimum conditions for flotation-spectrophotometric determination of iron with 4-(2-pyridylazo)resorcinol (PAR) based on a 1:2 FeII-PAR complex were found to…”
Get full text

Mössbauer spectroscopy study on the oxidation of sulfide zinc concentrate rich in marmatite by Nikolov, S, Boyanov, B, Moldovanska, N, Dimitrov, R

“…The process of oxidation of sulfide zinc concentrate containing larger quantities of iron (in the form of pyrite and marmatite) is studied through thermal…”
Get full text

Feasibility of a New Wearable Device to Estimate Acute Stress in Novices During High-fidelity Surgical Simulation by Georgiou Konstantinos E., Dimov Rossen K., Boyanov Nikola B., Zografos Konstantinos G., Larentzakis Andreas V., Marinov Blagoi I.

“…Background: Stress associated with learning of a psychomotor task can influence the trainees learning ability. Surgical simulation is a validated training…”
Get full text