bluuebunny/crossref_metadata_2025 huggingface dataset:
The concept of lita'arofu as a multicultural education model to response religious hate speech
Authors: Hamdi Saibatul , Musthofa Khabib
Published: January 2021

AbstractThe presence of the Religious Hate Speech (RHS) has had negative impacts such as intolerance, extremism, and even radicalism. Given the increasing number of young people, especially students who may be exposed, it is important that prevention efforts are carried out. One of them is through multicultural education. This study aimed to examine the facts of RHS and offer solutions through the concept of lita'arofu (to recognize each other) as a model of multicultural education. The method used is a literature study (library research by conducting a review of relevant literature and previous research. The results of this study indicate that: (1) the phenomenon of RHS in Indonesia is getting worse, as evidenced by cases of hate speech that actually bring down fellow Muslims; (2) multicultural education is urgent to be implemented in schools to create a moderate understanding of religion; (3) development of the interpretation of lita'arofu in QS. Al-Hujurat: 13, among others, changing direction from qabilah to ummah, giving choices instead of imposing, and broadening the perspective The lita'arofu model is important to apply, because this model will present a moderate religious narrative to prevent the RHS from spreading.
Penile Fracture - Our Initial Experience and Outcome
Authors: Najar Fayaz Ahmad , Makhdoomi Peer Hilal Ahmad , Rashid Tajamul
Published: January 2021

BACKGROUND Penile fractures occur when the engorged penile corpora are forced to buckle and “pop” under the pressure of a blunt sexual trauma, due to slippage of the penis out of the vagina during intercourse. Patients typically describe that a “plop” sound was followed by immediate de-tumescence, severe pain, and swelling, called as “egg-plant” deformity, as a result of the injury. The immediate surgical exploration with evacuation of the haematoma and repair of tunica albuginea defect is the ideal treatment. METHODS Over a period of more than 3 years between May 2015 and January 2019 we have treated 26 patients with penile fractures. All of them presented within 24 hours after sustaining the injury. None had associated urethral injury. Apart from clinical examination and history the investigation most commonly used by us to aid diagnosis was Ultrasound (USG) and colour doppler which helped in identifying the site and size of the defect as well as the blood collections. All were treated by surgical exploration. RESULTS Patients were discharged either on 2nd or 3rd post-operative day. None of our patients developed any postoperative wound infection. Post-operative hematoma developed in 01 patient. 01 patient had complaints of slight bend of the penis to the affected side but with no sexual problem. There was no history of erectile dysfunction in any of these patients. CONCLUSIONS To diagnose penile fracture, our study relied on history and physical examination mainly and did not recommend imaging, except for, in patients with possible urethral injuries. Immediate surgical intervention can make good functional results and surgical exploration can be considered in all cases of penile fractures. The procedure is simple with minimal morbidity, low morbidity and short hospital stay. KEYWORDS Fracture, Corpora, Tear
Comparative Study of Papaya Dressing versus Conventional Dressing in Ulcer Healing
Authors: Gottam Suman Babu , Bathena Sobha Rani , Budamala Sarada , Gandikota Venkata Prakash
Published: January 2021

BACKGROUND Wet to dry normal saline mechanical debridement is the most common, cost effective debridement method, which is used widely,1 including in our hospital setup in wound care management. Papaya is an enzymatic debriding agent which has been in use for many years.2 We wanted to compare the effectiveness of papaya and normal saline in healing of ulcers and evaluate the role of papaya dressing in wound debridement, granulation tissue formation, reduction in ulcer size, and ulcer healing. METHODS This is a comparative interventional study of 100 patients done at Sri Venkateshwara Medical College, Tirupathi, from December 2017 to December 2018. Patients were selected and randomized into two groups - Group I (treated with papaya) and Group II (treated with normal saline). Patients were clinically assessed at the time of inclusion and daily dressing was done. Patients were assessed weekly for 4 weeks and response noted regarding slough reduction, granulation tissue formation, reduction in ulcer size, and overall response to treatment. Additional treatment and follow, up to 3 months were recorded. RESULTS The disappearance of slough / necrotic tissue was significant in the papaya group in the third and fourth week when compared to the normal saline group. 23 patients in the normal saline group, and 27 patients in the papaya group did not require any additional treatment. 22 patients underwent SSG in the normal saline group and 19 patients in the papaya group. Five patients underwent secondary suturing in the normal saline group and four patients in the papaya group. 23 patients in the normal saline group and 27 patients in the papaya group did not require any additional treatment. CONCLUSIONS Papaya is a better and effective debriding agent in comparison to wet to dry normal saline dressing and it also promotes faster granulation tissue formation. Overall response to treatment with papaya is good. KEYWORDS Papaya Dressing, Normal Saline Dressing, Ulcer Healing
A Study of Management of Supracondylar Fracture of Humerus in Paediatric Age Group by Open and Closed Reduction with Internal Fixation
Authors: K Chandra Sekhar Rao , V Shivram Naik , P Rajesh
Published: January 2021

BACKGROUND Supracondylar humerus fracture is the most serious paediatric skeletal injury of elbow in children. Supracondylar fracture of humerus leads to many complications due to the intrinsic fracture instability, close proximity of the brachial artery, three main upper extremity nerves, poor radiographs, contradictory perception of reduction and reduction management modalities and, lastly, patient compliance with care. The aim of this research is to determine the short-term outcomes of closed and open reduction and Kirschner wire fixation in childhood Gartland type III supracondylar humerus fracture. METHODS It is a comparative case series of 2 years duration conducted among 30 patients with supracondylar humerus fracture who were admitted and treated at the Department of Orthopaedics. Closed reduction was handled in 15 out of 30 patients, with the remaining 15 patients being treated by open reduction. The outcomes are calculated on the basis of the Flynn scale, which is based on change in the carrying angle and loss of motion after treatment. RESULTS Males (56.66 %) were more affected than females; left side (66.67 %) was more affected than the right side; fractures of type III were more common. 26 patients stayed in a sufficient range of motion, 4 patients had insufficient motion with a loss of more than 100, of which 3 were treated with a closed reduction and 1 with an open reduction. Twenty-six (86.66 %) of the 30 patients showed good to excellent results and four (13.33 %) showed mediocre to poor results. Of the four cases, one was handled with a closed reduction and three were handled with an open reduction. CONCLUSIONS We conclude that open reduction and K-wire fastening without triceps is a treatment option for displaced supracondylar humerus fractures. KEYWORDS Supracondylar Fracture, Humerus Fracture
Consumer Protection in Resale Price Maintenance Practices
Authors: S Chintya Amelia , Pujiyono Pujiyono , Purwadi Hari
Published: January 2021

Fair business competition is greatly needed to create a conducive business climate. Regulations governing the fair business competition are expected to ensure the business opportunities for business actors  and to prevent monopolistic practices and or unfair business competitions, and at the same time to protect the consumers. In Indonesia, the Resale Price Maintenance (RPM) is applied as an effort or actions of the upstream businesses such as manufacturing companies or suppliers to control the price when the goods are resold. Control and supervision of the Resale Price Maintenance practices are necessary considering that the monopolistic practice that creates unfair business competition is still common in the society. This study aimed to reveal how consumer protection in the Resale Price Maintenance practices works. This study was conducted using the normative or doctrinal research method with the statute and conceptual approaches. From the findings, it can be concluded that the consumer protection in Resale Price Maintenance practices is still very frail so that it is necessary to reconstruct the provisions in resale price maintenance which can be performed by reconstructing the criminal sanctions for business actors who violate the resale price maintenance regulations that can cause monopolistic practices and unfair business competitions.
Auditor's Communication Identity in Carrying Out Audit Tasks
Authors: Lestari Puji , Utari Prahastiwi , Slamet Julius
Published: January 2021

The purpose of this research is to find out how the identity of the auditor's communication when carrying out an examination task. The research was conducted with qualitative method using a case study  and interviews for for collecting the data. The research samples were five auditors at BPK RI Representatives of DIY Province. The research concluded using four layers, which are the personal layer, enacted layer, relational layer, and communal layer cited from the in the Theory of Communication of Identity by Michael Hecht. The theory stated that participants' personal identity is formed by several factors i.e. self-character, code of ethics, and environmental factors. Participants demonstrate their code of ethics through the communication process between the auditor and the audite, which is then manifested in the form of behavior when carrying out the audit tasks. By understanding each other's identity, it can create a harmonious relationship between the auditor and the audite through mutual support between the auditor and the audite. The attitudes and behaviors shown by the auditors when conducting the audit tasks reflect the identity of the BPK institution in the community as a free and independent audit institution, so that the negative stereotypes of auditors are minimized. There is also an identity gap in: (1) the personal layer and the personal layer, the personal and enacted layers, and the relational and enacted layers.
Liquidator Professional Responsibility in Company Liquidation
Authors: Hariyanto Gunawan , Suhariningsih Suhariningsih , Winarno Bambang , Sihabuddin Sihabuddin
Published: January 2021

The dissolution of a Limited Liability Company is basically something that isn’t desired by the shareholders, therefore the implementation of the dissolution of a Limited Liability Company should be avoided as much as possible, because the dissolution of a Limited Liability Company will provide great losses for the shareholders of the company and the parties directly related to the Company Limited. Pursuant to Article 142 paragraph (1) of Law Number 40 of 2007 concerning Limited Liability Companies, the dissolution of a Company may occur due to: First, based on the resolution of the General Meeting of Shareholders;  Second, because the period stipulated in the articles of association has ended;  Third, based on a court order;  Fourth, with the revocation of bankruptcy based on the decision of the commercial court which has permanent legal force, the Company's bankruptcy assets are not sufficient to pay bankruptcy costs;  Fifth, because the Company's bankrupt assets that have been declared bankrupt are in a state of insolvency as regulated in the Law on Bankruptcy and Postponement of Debt Payment Obligations;  Sixth, due to the revocation of the Company's business license, which requires the Company to conduct liquidation in accordance with the provisions of laws and regulations.  Based on the research results, the liquidator must make and submit a report on the liquidation implementation process, the report contains the responsibility for the liquidation he did.  Furthermore, the accountability report is given and submitted by the liquidator to the General Meeting of Shareholders, the District Court, the liquidator is obliged to notify the final result of the liquidation to the Minister, the liquidator is also required to announce the final result of the liquidation process in a newspaper, the liquidator is responsible to the General Meeting of Shareholders or the court that appointed it  for the liquidation of the Limited Liability Company. There is a criminal sanction, and if it can be proven that the liquidator acted the opposite / cheated arbitrarily in the sense of not clearing all company affairs in the context of liquidation, then the liquidator can be prosecuted by reporting violations of the code of ethics, and the Liquidator has the right to attend a lawsuit in court , Liquidators have the power to maintain and dispose of assets, Liquidators have general administrative power, Liquidators have continuous control rights over the Company's liquidation assets, Liquidators have the right to sell the liquidated assets.
The Influence of Multiple Roles on the Performance of Female Employees
Authors: S Dwi Elsi Flora , Sugito Sugito , Efendi Riyanto
Published: January 2021

Performance is something that should be owned by everyone who works, both women and men. The performance of female employees in a company is influenced by various factors such as multiple roles. Therefore, the purpose of this study is to determine the effect of multiple roles on employee performance.This research methodology is a causal associative with a quantitative approach. Respondents in this study were 48 employees of LPP RRI Bengkulu who were taken by total sampling technique. Methods of data analysis in this study using multiple regression. The research results are as follows: 1). Multiple roles have a positive and significant effect on the performance of female employees, 2). The dual role affects the performance of female employees by 26% and 74% is influenced by variables outside of this study.
Cultural Identity of Muslim Women in the Yukngaji Community, Indonesia
Authors: Suciati Intan , Purwasito Andrik , Rahmanto Andre N
Published: January 2021

The rise of the hijrah movement trend has caused a shift in one's cultural identity. The phenomenon of hijrah, which was initially interpreted as a personal rite, has begun to shift into a communal movement. In essence, hijrah is a process of how a person improves himself towards the process of obedience and abandons God's prohibitions. The hijrah process is essentially related to the process of searching for one's identity. In a communication perspective, identity is not generated independently, but through a process of communication with others. Through The Communication Theory of Identity (CTI), this research wants to know how the shifting of identity of Muslim women is presented in layers. This research is a qualitative research with a case study approach that collects data through in-depth interview techniques and collects data about the YukNgaji Community. The results showed that the shift in the cultural identity of Muslim women in the YukNgaji Community is depicted through enactment identity, relational identity, and communal identity. The shift in cultural identity that occurs in Muslim women is basically a positive change. So that with this change, women can protect themselves in the future.
The Profile of Students with Moderate Initial Statistical Thinking Ability in Analyzing and Interpreting Data
Authors: Meylasari Novi Dya , Sujadi Imam , Subanti Sri
Published: January 2021

Statistical thinking is a thinking process related to the ability to understand how to describe, organize, reduce, present, analyze and interpret the data that apply the statistical understanding in real problems. Most students had a difficulty in analyzing and interpreting data. They claimed that analyzing and interpreting data is a difficult and complicated assignment since it needs high level skill, accuracy, careful consideration and objective attitude. If the data is analyzed and interpreted well, we will draw the correct conclusion. Mooney's research states that there are five levels of statistical thinking in a statistical thinking framework, including: level 1: Idiosyncratic; level 2: Transitional; level 3: Quantitative; level 4: Analytical, and level 5: Extended Analytical. This research aims to describe the profile of the level of statistical thinking of students with moderate initial abilities in analyzing and interpreting data. The subjects of this research were two eighth graders with moderate initial abilities in Junior High School of 1 Walisongo, Semarang. Think Aloud method is applied to collect data. The results showed that the level of students with moderate initial statistical thinking abilities was at level 2: Transitional, in which students tried to present their ideas through quantitative and subjective thinking, indicated by naive thinking, hesitant, incomplete responses in counting, and only focus on one aspect of the data display.
Understanding Child Support in the Pattern of Child Protection based on the Principle of Child Protection
Authors: Syafiuddin M. Nur , Safa’at Rachmad , Djatmika Prija , Istislam Istislam
Published: January 2021

Children have human rights (HAM) as those of adults. Unfortunately, discussions regarding children's rights are not as intense as adult rights or women's rights. There are not many parties that discuss and take concrete actions related to the protection of children's rights. In fact, children are a reflection of the future, assets of family, religion, nation and state. This study aims to describe and analyze the meaning of child support in the pattern of child protection in Indonesia based on the best interests of the child. This normative legal research utilized a philosophical and statutory approach. Analytical techniques used to process legal materials were analytical prescriptive methods, hermeneutics (interpretation) of law and ijtihadi. The legal materials used were primary legal materials including laws on child protection and secondary legal materials consisting of all literature and publications relevant to the field of child protection law. The results showed that there are at least two meanings of child support in the pattern of child protection in Indonesia based on the principle of child protection: child support as a guarantee for child welfare and child support as a futuristic value in child protection.
Correction of the immunity infringements in use antiadhesive
polymeric implants in experiment
Authors: Lazarenko Victor Anatolievich , Konoply Aleksandr Ivanovich , Bezhin Alexander Ivanovich , Lipatov Vyacheslav Aleksandrovich , Gomon Marina Sergeevna , Loktionov Alexei Leonidovich , Zhukovskiy Valery Anatolyevich
Published: January 2021

Deficiency of immunity after every surgical intervention? Which is accompanied with a serious illness, anesthesia, manydrugs (antibiotics), develop deficiency of immunity. And adhesive disease of peritoneum is the most frequent complicationof surgical operations. In accordance with some scientist, - implantation of the most effective antiadhesive polymeric agents,can be the cause of development deficiency of immunity too. In experiments in white rats were studies indexes of immunityin experimental abdominal adhesive process with implantation of prophylactic agent Mesogel. Were proved by experiments,that immunomodulators. Derinat and Longidasa can correct the disorders of immunity in postoperative period
The first experience of simultaneous RF ablation and mastectomy
for breast cancer with liver metastases
Authors: Novomlinsky Valery Vasilievich , Glukhov Aleksandr Anatol'evich , Redkin Alexander Nikolayevich , Sokolov Andrei Petrovich , Chvikalov Evgeny Sergeevich , Ostroushko Anton Petrovich
Published: January 2021

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Severity condition assessment in patients with intra-abdominal surgical infection
Authors: Gvozdik Tatiana Petrovna , Kononov Vladimir Sergeevich , Nurtelecom Mazhit Akhmetovich
Published: January 2021

The therapy outcome of 258 patients with intra-abdominal surgical site infection has been evaluated, 205 (79,5%) of which developed abdominal sepsis of different severity degrees. In order to assess risk factors of lethal outcome, the severity of illness and related organ dysfunction scores have been calculated by means of APACHE II, SAPS, MODS и SOFA, as well as the procalcitonin levels test laboratory findings (PCT). In the present study, procalcitonin levels evaluation has shown to be a high sensitivity test that provides objective information for an infectious process assessment, correlating to APACHE II scores (R2=0,86). The concomitant liver dysfunction has been revealed be the most unfavorable factor for intra-abdominal infection prognosis, being the direct cause of death in 28,3% cases. The most sensitive values are total bilirubin, alkaline phosphatase, triglyceride levels, with the highest correlation ratio R2=0,92, R2=0,89, R2=0,93, respectively, which allows their application as an early diagnostic procedure for liver dysfunction detection in this group of patients with the perspectives of its correction.
Prognosis and surgical tactics in obliterating atherosclerosis of lower extremities
Authors: Kazantsev Alexander Viktorovich , Korymasov Evgeny Anatolievich
Published: January 2021

We studied the prognostic significant clinical, hemodynamic, hemostasiological, immunological characteristics, markers of endothelial dysfunction, changes in lipid profile in patients with atherosclerosis obliterans of the femoral-femoralpopliteal-tibial localization. As a result, multivariate analysis the pathogenetically substantiated prediction system with the calculation of the index of the disease. When the index of less than 13 points for obliterative atherosclerosis assessed as non progressive, at index 13 points, and more-progressive.
Biomechanical analysis of indicators of movements in the joints of the lower extremity in patients with coxarthrosis as a method of functional diagnosis
Authors: Guriev Vladimir Vasilyevich , Zorya Vasily Iosifovich , Biryukova Elena Vladimirovna , Prokopenko Roman Alexandrovich , Frolov Alexander Alekseevich
Published: January 2021

Biomechanical parameters of the movements of patients with different stages of idiopathic, posttraumatic coxarthrosis and with avascular necrosis were studied. Low limb movements were recorded with electromagnetic system. Angular amplitudes, angular velocities and parameters of joint stiffness and joint flexibility were calculated using movement recordings and previously developed biomechanical model. It was shown that these parameters adequately describe the stage of hip joint injury. As for patients with early stages of coxarthrosis, these parameters describe the differences between the limb under suspicion and the intact limb. The proposed biomechanical parameters can be used as the numerical assessments of a functional state of the low limb under coxarthrosis: for a diagnostics, including early one, for an assessment of the results of operative interventions, for an assessment of the effectiveness of rehabilitation procedures
Esophagoplasty with a Combined Visceral Graft
Authors: Ruchkin Dmitry Valerievich , Okonskaya Diana Evgenievna , Yan Maria Nikolaevna , Kozlov Valentin Alexandrovich , Raevskaya Marianna Borisovna , Zavarueva Anna Aleksandrovna
Published: January 2021

The problem of unsuccessful (incomplete) esophagoplasty is still urgent nowadays. Simultaneous esophagoplasty remains a method of choice in reconstructive surgery of the esophagus. However, in the case of ischemic disorders in the transplant, its initially insufficient length, deficiency of the organs of the plastic reserve, the completion of esophagoplasty seems to be a technically complicated task, forcing surgeons to perform multi-stage intervention techniques. These techniques are associated with longer treatment periods and deterioration in the quality of life of patients.The article highlights a rare experience of esophagoplasty with combined grafts consisting of visceral segments on a natural source of blood circulation. Applied operational techniques allowed to complete esophagoplasty in a single step, including rational disposal of compromised plastic material, and also to preserve digestion.
The effect on the electroactivity of the abdominal muscles of the level of connective tissue dysplasia and the method of combined hernioplasty of the inguinal hernia
Authors: RAILIANU Radu
Published: January 2021

Introduction. Combined methods of hernioplasty appear to be a promising surgical treatment of inguinal hernias, allowing reducing suture tension due to the contraction and stretching of the abdominal muscles optimized during the operation. This protects the inguinal region from relapse in severe connective tissue dysplasia.The aim of research was to study the influence of the level of connective tissue dysplasia and methods of combined hernioplasty of inguinal hernias on the electroactivity of the abdominal muscles.Methods. The study included 151 patients with inguinal hernias. The electroactivity of the abdominal muscles and the level of severity of connective tissue dysplasia were studied in these patients before and after combined methods of hernioplasty according to Milkovskaya Dmitrova diagnostic scheme; this also includes tension-reducing mechanism.Results. In the preoperative period, the decrease in the parameters of electromyograms compared to the healthy side in the inguinal region was 67.2%, compared to the region over the group of lateral muscles - 55% and compared to the region over the rectus abdominis muscles - 23.6%. The increase in the electrical activity of the rectus muscles against the background of a decrease in the severity of connective tissue dysplasia to the middle and light levels obtained 43.5% and 77.9%, respectively.The average frequency parameters of electromyograms of the abdominal muscles after combined tension-reducing hernioplasty of inguinal hernias seemed to be most significant: in the inguinal regions on the side of the hernia they amounted to 91.95 7.1 vibrations per second, in the region over the group of lateral muscles - 94.61 4.6/s and in the region over the rectus abdominis muscles - 93.7 2.9/s. Moreover, approximately similar rehabilitation of the rectus and lateral abdominal muscles was reported, which allowed balancing oppositely directed tension forces in the abdominal wall.Conclusion. Thus, in patients with inguinal hernias before surgery, the decrease in the electroactivity of the lateral muscle group was more pronounced than the decrease in the electroactivity of the rectus abdominis. The combined tension-reducing hernioplasty of inguinal hernias contributed to the most significant electromyographic rehabilitation of the abdominal muscles.
Sol-Gel Synthesis of Nonstoichiometric Titanium Dioxide for Photo-Oxidation of Toxic Organic Substances
Authors: Dorosheva I. B. , Rempel A. A. , Valeeva A. A. , Weinstein I. A.
Published: January 2021

Titanium dioxide (TiO2) was synthesized by sol-gel method at different values of pH = 3, 7, 8, 9, or 10. X-ray phase analysis has shown that in an acid rout, an anatase phase had crystallized, and in an alkaline rout an amorphous phase of TiO2 was achieved. After annealing for 4 hours at 350∘C, all samples were transformed into anatase phase. The particle size in the different samples varies from 7 to 50 nm depending on the pH. The diffuse reflectance spectra revealed a high value of the band gap width in the range from 2.9 to 3.4 eV and its narrowing after annealing to the range from 2.8to 3.1 eV. The specific surface area measured by BET method was changing from 80 up to 140 m2 /g.
Keywords: Titanium dioxide, nanostructure, photocatalysis, band gap, specific surface area
Technical and Economical Substantiation of the Technology of Joint Pyrometallurgical Processing of Oxidized Nickel Ores and Sulfide Copper Ores
Authors: M. Klyushnikov Alexander , N. Selivanov Evgeny
Published: January 2021

The technological scheme of processing of nickel and copper ores from the Urals deposits is substantiated, including calcination of oxidized nickel ore with limestone, partial oxidative roasting of sulfide copper ore, blending of calcines with coke, and melting of charge to obtain copper-nickel matte. The implementation of the scheme will increase the complexity of possible uses of raw materials and ensure a high environmental protection level. A feasibility study was carried out for the organization of industrial enterprise, which entailed the joint processing of oxidized nickel ores and sulfide copper ores with a capacity of 700,000 tons per year of a mixture of initial ores, including 400,000 tonnes of nickel ore and 300,000 tonnes of copper ore (dry weight). Finished products are: copper-nickel matte, containing not less than, wt.%: 3.3 Cu, 4.7 Ni, 0.6 Co, 1.5 g/t Au, 2.6 g/t Ag; granular slag containing, wt.%: 0.01–0.02 Ni, 0.01–0.02 Cu, 0.01–0.06 Co, 13–16 Fe, 44–50 SiO2, 13–14 MgO, 4–5 Al 2O3, 9–11 CaO; and technical grade sulfuric acid (mass fraction of monohydrate not less than 92.5 %). The planned enterprise is expected to produce the following annual volumes of finished products (not less than): 94,900 tonnes of matte; 512,300 tonnes of granular slag; and 235,500 tonnes of technical grade sulfuric acid. The estimated period of project implementation is 13 years. The total amount of investment costs is 1407 million roubles, current costs for the annual production program are 3820 million roubles. The financial results of the investment project are characterized by the following indicators: net profit is 5,735.5 million roubles, net discounted income is 1546.6 million roubles, the profitability index of discounted investments is 2.1, the internal rate of return is 36.4 %, and the discounted payback period is 5.5 years. The results indicate the viability and economic efficiency of the project.
Keywords: ore, processing, sulfides, oxides, copper, nickel, cobalt, smelting, extraction, products, economy, indicators, efficiency
Phenol Extraction from Schistous Tar of Shubarkol Deposit
Authors: Ordabayeva A.T. , Meiramov M.G. , Khrupov V.A.
Published: January 2021

The process of extracting phenols from schistous tar using extractants based on water solutions of technical ethanol with concentration of 70% is considered in this article. According to chromato-mass-spectrometric (CMS) analysis, initial schistous tar contains 28.29 % of summary phenols, after extraction with 70% alcohol solution this had dropped by 8.76 %. According to results of laboratory studies, the best extraction properties were identified as occurring with 70% water ethanol of schistous tar with the ratio 1:1. As we see from obtained data, after extraction with ethanol, phenol content in tar is decreased by up to 8.76 %. After elimination of phenols, schistous tar might be applied as hydrocarbonic material for future processing into motor or boiler fuel.
Keywords: Schistous tar, phenol, extraction
Recycling of Waste Slag Upon Production of Manganese Ferroalloys
Authors: Ya. Dashevskii Veniamin , A. Aleksandrov Aleksandr , I. Zhuchkov Vladimir , I. Leontˋev Leopold , G. Kanevskii Akim
Published: January 2021

The mineral resources base of manganese ores is sufficiently large in Russia. However, their mining capacity is almost absent. This is due to the low quality of domestic manganese ores and the high content of phosphorus. To date, Russia has been obliged to import the commercial manganese ore, manganese-containing ferroalloys, metallic manganese, and manganese dioxide. To produce the high-carbon ferromanganese the composition of charge was developed. The optimum variant was that where 10–15% of manganese-containing raw materials were changed for waste slag. In this case, the phosphorus content in the high-carbon ferromanganese is lower by approximately 20 rel. % in comparison with the production of ferromanganese only from the manganese-containing raw materials. About 50–60 rel. % of manganese can be extracted from the waste slag of silicon-thermal production. To produce the hot metal, the composition of iron-bearing burden material was developed. The optimum variant was that where 100% of manganese raw materials were changed for the waste slag. In this case, upon production of hot metal, the specific consumptions of manganese raw materials and limestone were decreased by 100 and 20%, respectively. The phosphorus concentration in metal was lower by about 10 rel. % as compared to the production of hot metal only from the manganese raw materials. Up to 55% of manganese can be extracted from the waste slag of silicothermic production, which is irretrievably lost at present.
Keywords: manganese ferroalloys, manganese-containing raw materials, waste slag, hot metal
Technical Solution for the Disposal of Solid Slag from Metallurgical Plants with Production of Abrasive Powders
Authors: Ponomarev V.B. , Kataev A.V. , Postovoi I.V.
Published: January 2021

This article considers a technical solution to the production of abrasive powders according to the standard ISO 11126 from copper slag and nickel slag with the use of air classification. Justification of the selection of air classifier for the process of classification of copper slag is performed. The results of laboratory studies on the effect of the consumption concentration on the quality of the separation of slag particles in apparatus with an inclined louver lattice with reverse air suction are presented. This article then discusses the dependence of the material separation boundary on the air flow rate through the classifier’s louver. Based on the theoretical calculation, an industrial apparatus with a capacity of 50 t/h on initial raw materials was developed, laboratory tests were industrialized, and the results of industrial tests were shown. Industrial testing was carried out and the results of are shown.
Keywords: granulated slag, disposal, abrasive powder, granulometric composition, consumption concentration, air classifier, screening
Data Support in the Choice of Mine Water Treatment Technology
Authors: B. Zobnin Boris , A. Surin Alexander
Published: January 2021

Mathematical modeling is used in this work in the analysis of options for the implementation of acid mine water treatment technology. Ta technological scheme of metal-bearing mine water treatment is proposed and includes two stages. The first stage, the treatment of mine water to the required degree to extract solid insoluble sediment for further processing, is implemented in a mobile technological complex installed in places of mine water outpouring. Selective extraction of individual metal powders is delivered in a stationary complex in applying the centrifugal conversion method using plasmatron. In the first step, the metal ions contained in the mine water should be complete recovered with maximum energy-saving. The condition for complete extraction of useful components from mine waters is pH values corresponding to the beginning of precipitation of hydroxides of various metals and complete precipitation, which depend on the nature of metals, their concentration in solution, temperature, impurity content. The process regime must be manageable to ensure its adequacy in the quality of raw materials under conditions of changing mine water flow rates and concentrations of ingredients. The technological mode must be manageable to ensure its adequacy in the raw material quality under changing mine water discharges and concentrations of ingredients.
Keywords: technological complex, mine water, treatment, modeling
Development of Magnesian Cement Producing Technology on the Ural Region Raw Materials Basis
Authors: Kashcheev I.D. , Zemlyanoy K.G. , Doronin A.V. , Valieva L.B.
Published: January 2021

This article considers an effective way of processing natural and technogenic magnesium-containing materials, which will release magnesium oxide and magnesium sulphate for the production of magnesian cement. Using this method, pure magnesium oxide, magnesium sulphate and magnesium sulfate have been obtained, the study considers the properties of magnesian cement with differeng magnesium oxide production conditions.
Keywords: non-conventional magnesium containing raw materials, technogenic materials, magnesian cement, hydrochemical processing, ammonium hydrosulfate
Modified Collector: New Approaches
Authors: Aitkazynovna Mukhanova Ainur
Published: January 2021

The process of complex raw materials is currently characterized by the fine-dispersed mineralogical structure and difficult structural characteristics complicating the flotation process. In this study, the processing methods for flotation of Aktogay deposits of copper-molybdenum ore were performed by using basic and modified agents. The properties of modified collector based on Kumkol deposit and diesel fuel were studied using the standard methods. The testing technology included the grinding of initial ore to a particle size of 65% of the class -0.074 mm, collective flotation to produce coarse copper-molybdenum concentrate, desorption, regrinding of the collective copper-molybdenum concentrate to 95% of the class -0.074 mm, selection of the collective concentrate. It was established that this application increased the extraction of copper/molybdenum concentrate by 3.8 % without loss of concentrate quality. This technology is applicable to mining and beneficiation enterprises processing molybdenum ores.
Keywords: copper, molybdenum concentrate, modified agent
The Possibility Assessment of Complex Processing of Technogenic Formations Containing Zinc Sulfide
Authors: . Mikheenkov M.A , O.Yu Sheshukov , . Nekrasov I.V , D.K Egiazaryan
Published: January 2021

The comprehensive methodology for the zinc extraction from sulfide compounds into the oxide form with possible further reduction to metal is presented in this study. It was demonstrated in laboratory conditions during sludge treatment with Zn and ZnO obtaining. The remaining silicate products. It is proposed to recycle this material into Portland cement clinker to ensure a waste-free process.
Keywords: zinc sulfide, zinc oxide, sludge recycling, Portland cement clinker, waste-free recycling
Hydrometallurgical Processing of the Wastes of Polymetallic Ore Dressing
Authors: Bulaev Aleksander
Published: January 2021

The possibility of hydrometallurgical treatment of old flotation tailings to extract base and noble metals was investigated. Two samples of old flotation tailings samples containing 0.26% and 0.36% of copper, and 0.22% and 0.23% of zinc were the subjects of this study. Agitation and percolator leaching was performed with distilled water and sulfuric acid solutions (of 0.5 to 10% H2SO4). It was shown that under certain conditions (sulfuric acid concentration) it was possible to achieve selective leaching of non-ferrous metals and obtain solutions with relatively low concentrations of iron ions, which is necessary for further effective extraction of non-ferrous metal ions from the solution. The effect of acid leaching on further gold recovery from the first sample containing 0.7 g/t of gold by cyanidation was investigated. The sample of the tailings after leaching with a 1% sulfuric acid solution was leached with 10% sulfuric acid. After that, the tailings sample and the acid leach residues were subjected to sorption cyanidation. Two-stage acid leaching with 1 and 10% sulfuric acid provided the higher gold recovery than one-stage (49 and 65%, respectively). Also it was shown that pregnant solution obtained during leaching of the second sample with 10% sulfuric acid may be used for oxidative leaching of substandard copper-zinc concentrate that allowed to 13 and 48% of copper and zinc from the concentrate during the leaching at 80∘C.
Keywords: flotation tailings, leaching, substandard sulfide concentrates
Extraction Recovery of Vanadium(V) by Amines
Authors: Kurbatova Lyudmila D. , Koryakova Olga V. , Valova Marina S.
Published: January 2021

The extraction of vanadium (V) by N-(2-hydroxy-5-nonylbenzyl)-β, β- dihydroxyethylamine was studied depending on different factors, such as pH of the medium, concentration of extracting agent, temperature and solvent type. This allowed the optimal extraction conditions to be determined. It was shown that extraction of vanadium (V) takes place with high distribution coefficients, and a complex containing a decavanadate anion and four molecules of the extractant is formed in the organic phase. The extracted vanadium (V) complex with amine is stable for more than one month.
Keywords: extraction, vanadium, distribution coefficient, infrared spectroscopy
Efficiency Estimation of the Bacal Siderites Using to Increase Stability of Steel-Melting Agregates Lining
Authors: Gulyakov V.S. , Vusikhis A.S. , Chentsov V.P.
Published: January 2021

During the melting processes in steel-melting aggregates, lining destruction takes place due to the Magnesium oxide of lining dissolution in slag. In this study, different materials containing Magnesium oxide have been introduced into slag to increase lining stability. Efficiency estimation of raw siderite (10-0 mm class) using for this aim is considered in the present work. Initial slag (basic capacity СаО/SiO2=2,1) of industrial ASM (Arc Steel Melting) was corrected by high magnesia introduction additives (siderite). Slag has been loaded into a magnesia crucible, heated up to 1700∘C, aged during 1 hour and cooled with the furnace. The final slag phase composition analysis detected considerable changes in it: increase of MeO-phase refractory with MgO prevalence (melting temperature 2800 ∘С) and replacement of monocellitic silicate component (CaO⋅MgO⋅SiO2, melting temperature 1498 ∘С) by larnite (β-2CaO ⋅SiO2 melting temperature 2130 ∘С). Crucible slag resistance was estimated by thinning of it walls. Experiment results confirmed affect of MgO content in slag to linings solubility in it. It was determined that siderite additives increase MeO-phase (melting temperature more than 2000 ∘С) content in slag approximately by 30 % that is rather essential for lining service period increasing. It is confirmed that siderite additives prolongate magnesia lining stability of steel-making aggregates.

Keywords: Bacal siderite, refractory lining, steel-making aggregates, crucible, monocellit, magnesia
Research Treatment Studies for Cleanable Waste Water for Cleaning Pipes
Authors: Shavaleev Emil Irikovich , Abdeev Eldar Rinatovich , Lobanov Maxim Alexandrovich , Rukomoinikov Alexander Alexandrovich
Published: January 2021

Currently, many methods of treating waste water are known using various lubricating coolant compositions, but there is no universal treatment method. The most suitable ways of reducing the harmful impact of waste water in the metallurgical industry on the water environment are 1) the local treatment of waste water of various compositions, 2) the removal or reduction of the total amount of waste treatment liquid emissions as a result of their regeneration, and 3) reuse of treated waste water in closed water circulation systems and technical water supply to enterprises. During production of bimetallic finned tubes by cold deformation method, alkaline cleaning solutions are used to clean the surface from lubricating-cooling liquid. As a result, there is a need to dispose of spent liquids. The spent detergent solution is a three-phase emulsion. The upper layer is oil-oil products, medium liquid with increased PH index, and aluminates precipitate. A spent emulsion, i.e. an end-of-life emulsion that has lost its functional and operational properties, needs to be decomposed and disposed of.
Keywords: finned bimetallic tube, air cooler, lubricating coolant, oil – emulsion
Improvement of Efficiency of Air Cooling Devices By Creation of Independent Modules with Evolvent Profile Composition of Finned Tubes
Authors: Abdeev Eldar Rinatovich , Saitov Rail Idiatovich , Abdeev Rinat Gazizyanovich , Shavaleev Emil Irikovich
Published: January 2021

An analysis of the composition of the heat-exchange equipment at the petrochemical plants reveals that nominally more than 30% (and by weight about 50% of the total equipment) is heat-exchange equipment, including air-cooled units requiring replacement and reconstruction as a result of the end of their service life or corrosion erosion wear. Therefore, work aimed at improving the effectiveness of ABO is relevant. The existing problem of reducing the efficiency of air cooling in hot calm weather is compounded by the need for short-term humidification using a humidifier mounted directly behind the fan wheel when the air enters the diffuser. This dramatically increases the processes of corrosion and the formation of deposits on the surface of finned tubes (scale, fluff and dust). We have carried out a set of computational and experimental studies to evaluate the thermal efficiency of small-sized ABOs of various designs using a universal experimental industrial bench. The results of studies have established that vertical-cylindrical ABO designs are more energy-efficient and less metal-intensive compared to typical horizontal ones and allow for the influx of cold atmospheric air to the ABO inlet during the hot season.

Keywords: air cooler; heat transfer coefficient; thermal efficiency; design of a vertical cylindrical air-cooling apparatus; involute profile layout
Physico-Chemical Foundation of Sludge Processing Hydrometallurgical Production of Vanadium Pentoxide. Investigation of Forms of Vanadium Compounds
Authors: Volkov Anton Ivanovich , Kologrieva Ul’ana Alexandrovna , Kovalev Natoly Ivanovich , Wainshtein Dmitry L’vovich , Chizhov Pavel Sergeevich , Seregina Irina Filippovna
Published: January 2021

To develop the physico-chemical basis of a complex technology for processing slurries hydrometallurgical production of vanadium pentoxide it is necessary to know in what form vanadium compounds are in the dump sludge and at what stage of processing they were formed, which is why vanadium is not completely extracted into the solution. This paper investigates the behavior of vanadium in the existing process chain (with the study of intermediate products of technological conversion) using a set of modern analytical methods (X-ray diffraction, SEM, X-ray diffraction, thermogravimetry).
Keywords: vanadium, slag, sludge, vanadium pentoxide, oxidation state, phase composition, processing technology
nvestigation of Methods for Processing Sludge Liming Sewage Hydrometallurgical Production of Vanadium Pentoxide
Authors: Kologrieva Ul’ana Alexandrovna , Volkov Anton Ivanovich
Published: January 2021

The sediment of neutralization of drain waters, or the sediment of liming, is obtained by processing with lime milk solutions of hydrometallurgical production of vanadium pentoxide containing sulfuric acid, followed by filtration. A scheme of processing to obtain vanadium concentrate is proposed.

Keywords: sludge liming sewage, vanadium pentoxide, leaching, filtration, washing, deposition, concentrate
Selection of Elements at the Dissolution of Heat Resistant Nickel Alloys in Mineral Acid Solutions
Authors: Zhilina S.A. Krasikov, E.M. , Russkih E.M. Zhilina, A.S. , Osinkina T.V.
Published: January 2021

Thermodynamic modeling of the interaction of a heat-resistant nickel alloy containing refractory rare metals with hydrochloric, sulfuric and nitric acids with a temperature change in the range of 20-100 ∘ C and a concentration of 50 to 150 g / dm3 at a pressure of 1 atm was carried out. The thermodynamic assessment data were confirmed in experiments on the anodic dissolution of the alloy in sulfate solutions. According to the results of x-ray phase analysis of the sludge, it was revealed that tungsten in the form of a solid solution in nickel passes to this product. Also, tantalum and niobium pass into the slurry in the form of oxides. Mostly, Re, Co, Cr passed into the electrolyte solution. The results of the study can serve as a scientific basis for the development of promising technologies for processing metal waste from heat-resistant alloys.

Keywords: thermodynamic modeling, heat resistant nickel alloy, rare elements, mineral acids, dissolution