bluuebunny/crossref_metadata_2025 huggingface dataset:
Phase equilibria in the MnO-Mn2O3-FeO-Fe2O3-Sb2O3-Sb2O5 System in Air at 1200℃
Authors: Golovkin BG
Published: September 2021

Using the methods of X-ray phase and X-ray Densitometric analysis, the phase equilibria between oxides of manganese, iron and antimony have been investigated in an air atmosphere at temperatures up to 1250? in an air mosphere at normal pressure. The phase diagram of the system at 1200? was built MnO-Mn2O3-FeO-Fe2O-Sb2O3-Sb2O5. A new phase was found Mn12-2x,sup>2+Fe2x2+Sb3+Sb55+O26(0?x?1), with edge compositions FeMn5Sb3O13 and Mn6Sb3O3 (a=8.5003?0.0025Å; b=8.0064?0.0025Å; c=11.5779?0.0025Å; Z = 3; ?obs. = 5.7 g/cm3; ?calc = 5.6991 g/cm3). The phase exists in the temperature range 1180-1230oC and can be obtained by quenching, but always with a large admixture of Mn2Sb2O7 and spinel Mn112+Mn133+Sb93+O44.The reason for this behavior is that air molecules have different temperatures, as a result of which the phase composition of the reaction mixture cannot be strictly related to one temperature, and different phases can be stable at different temperatures.
Mini-review on Chromatography of Proteomics
Authors: Ibrahim Adel E. , Elhenawee Magda , Saleh Hanaa , Sebaiy Mahmoud M.
Published: September 2021

This literature mini-review focuses on chromatography and its application for separation of proteomics, Factors affecting RP-HPLC of proteins and their peptide mapping. Only two drugs are cited in the mini-review, which are erythropoietin hormone and carbetocin where mode of action and analytical techniques used for their determination were described.
Determinants of Companies’ Board Composition in Emerging Markets
Authors: Bellato Leticia L. N.
Published: September 2021

This paper examines the determinants of female board representation for a sample of Brazilian listed companies for the year of 2018. Using count data models, we find that greater firm size, performance and board size lead to higher woman representation on companies’ boards. Also, that private control is associated with a lower number of women on boards. Most studies related to board composition focus on independent directors and are conducted in a developed countries’ setting. This work contributes to the extant literature in understanding what drives woman representation on corporate boards in an emerging market context and also would help to support the definition and implementation of gender diversity policies by showing possible impacts.
Wellness Sustainability via UN Sustainable Development Goal#3 Wellness, #12 Responsible Production/ Consumption, and #16 Peace
Authors: Yeung Shirley M C
Published: September 2021

The purpose of this paper is to explore the key elements of wellness sustainability related to transformative servant leadership style in business and social organizations for staff engagement with literature search using the keyword, “new wellness skills” on papers published in 2020. Thirteen papers were found relevant. Review of the papers showed that some factors were associated with wellness. They included raisin diet, grapes nutrition awareness, antioxidant, happiness emotion and adaptiveness. As a proactive, innovative and transformative servant leader, it is time to re-visit the key elements for new skills on wellness sustainability with a new market and a team of capable and loyal workforce under COVID-19.
Diagnosis and Treatment of Syndesmotic Unstable Injuries: Where We Are Now and Where We Are Headed
Authors: Bejarano-Pineda Lorena , DiGiovanni Christopher W. , Waryasz Gregory R. , Guss Daniel
Published: September 2021

Up to 10% of ankle sprains are considered “high ankle” sprains with associated syndesmotic injury. Initial diagnosis of syndesmotic injury is based on physical examination, but further evaluation of the distal tibiofibular joint in the sagittal, coronal, and rotational planes is necessary to determine instability. Imaging modalities including weight-bearing CT and ultrasonography allow a physiologic and dynamic assessment of the syndesmosis. These modalities in turn provide the clinician useful information in two and three dimensions to identify and consequently treat syndesmotic instability, especially when subtle. Because there is notable variability in the shape of the incisura between individuals, contralateral comparison with the uninjured ankle as an optimal internal control is advised. Once syndesmotic instability is identified, surgical treatment is recommended. Several fixation methods have been described, but the foremost aspect is to achieve an anatomic reduction. Identifying any associated injuries and characteristics of the syndesmotic instability will lead to the appropriate treatment that restores the anatomy and stability of the distal tibiofibular joint.
Movement Is Life Series Optimizing THA and TKA Patients: Dental Health, Disparities, and Total Hip and Knee Arthroplasty
Authors: Jones Lynne C. , Green Thomas M. , Burney Dwight W.
Published: September 2021

Poor oral health is common in the United States; however, it is much more common in African Americans, Hispanics, and other racial/ethnic minorities. Almost one in five low-income adults states that their mouth and teeth are in poor condition. Twenty-nine percent of Americans have no dental insurance. Patients who have active infections are at greater risk for prosthetic joint infection. Optimization in these vulnerable groups should focus on treating active infections, with a prioritization of free clinics, academic clinics, and websites, such as “The Neighborhood Navigator,” and easily accessible surgical consults.
Exercise Capacity, Functioning and Quality of Life 12 Weeks after Traumatic Thoracic Spinal Cord Injury
Authors: Kowalczyk-Jurgiel Sylwia , Scheel-Sailer Anke , Frotzler Angela , Flueck Joëlle Leonie , Jegier Anna , Perret Claudio
Published: September 2021

Background. A spinal cord injury (SCI) leads to patho-physiological changes that can affect physical and psychological performance. The aim of this observational study was to evaluate the relationship between exercise capacity, functioning and quality of life in patients 12 weeks after traumatic paraplegia participating in early rehabilitation.
Material and methods. 13 patients participated in this study and performed cardio-pulmonary exercise testing (CPET) on an arm-crank ergometer to determine peak exercise capacity (VO2peak). Data from the spinal cord independence measure (SCIM) were used to assess different areas of functioning. The 12-item short form survey (SF12) questionnaire was applied to measure quality of life. Spearman correlations were used to relate VO2peak with SCIM data and results from the SF12 questionnaire.
Results. VO2peak ranged between 12.6 and 28.1 ml/kg/min. A significant relationship was found between VO2peak and the physical component of the SF12 questionnaire, whereas no correlations were found with either SCIM sub or total score, or with the mental component or the total score of the SF12 questionnaire.
Conclusions. 1. Patients with traumatic paraplegia showed fair to average exercise capacity after 12 weeks of early rehabilitation. 2. A significant relationship between VO2peak and subjectively rated physical fitness exists at this time point. 3. The implementation of an individual fitness program tailored to the patients' needs based on CPET results is highly recommended in order to improve functioning and quality of life.
Osteosynthesis of Common Acetabular Fractures Operated on Through a Single Posterior (Kocher-Langenbeck) Approach with or without Trochanteric Flip Osteotomy. A Case Series
Authors: Manzoor Qazi Waris , Sultan Asif , Mir Bashir Ahmed
Published: September 2021

Background. The Kocher-Langenbeck approach is recommended in the majority of common posterior acetabular injuries. Trochanteric osteotomy can be used to extend the exposure of the Kocher-Langenbeck approach superiorly and anteriorly. We evaluated the functional outcome of common acetabular fractures operated on through the Kocher-Langenbeck approach with or without trochanteric flip osteotomy.
Material and methods. This prospective study enrolled 42 patients with posterior wall, posterior column, transverse, posterior wall with posterior column, transverse with posterior wall and both column acetabular fractures. The Kocher-Langenbeck approach was used in 35 patients and trochanteric flip osteotomy was done in 7 patients. The radiological outcome was evaluated by Matta’s criteria and the functional outcome was evaluated using modified Merle d'Aubigné and Postel criteria.
Results. D’Aubigne Postel scores at the final follow-up were excellent in 12 patients, good in 18, fair in 8 and poor in 4. Thirty-seven patients had congruent reduction (anatomical in 29, imperfect in 8) and 5 patients had non-congruent reduction on radiographs as per Matta’s criteria. Radiographic congruity (88.09%, 37 out of 42 cases) correlated fairly well with the functional outcome (excellent or good functional outcome in 71.4%, 30 out of 42 cases). The complications included traumatic nerve palsy (3 cases), iatrogenic nerve palsy (2 cases), deep venous thrombosis (2 cases), wound infection (3 cases), non-congruent reduction (5 cases), 8 cases of osteoarthritis of hip, 2 cases of avascular necrosis of femoral head and 3 cases of heterotrophic ossification.
Conclusions. 1. Surgical treatment of common acetabular fractures with major posterior involvement can be attempted via a single posterior approach (Kocher-Langen­beck with or without trochanteric flip osteo­tomy) and leads to good-to-excellent results in a majority of the cases. 2. It is superior to conservative management, which has been found to be accompanied by a much higher rate of complications. 3. A thorough study of the pre-opera­tive radiographs, Judet’s views and 3D-reconstructed CT images helps in classifying the fracture and thereby assigning or not assigning it for the posterior approach.
Application of Hyperbaric Oxygen Therapy in the Skin Diseases Treatment
Authors: Piotrowska Anna , Zych Magdalena , Oliwa Jakub
Published: September 2021

The hyperbaric oxygen therapy (HBOT) involves the use of 100% pure oxygen in conditions of increased pressure, exceeding atmospheric pressure. This allows the supply of several times more oxygen to internal organs and blood serum than when using standard pressure. HBOT has proven to support the treatment of autoimmune skin diseases, complications of metabolic diseases and burns, as confirmed by clinical studies. In addition, this therapy can also be used to improve the physiological condition of the skin after cosmetology procedures. The aim of this work is to review information on the therapeutic effects of hyperbaric oxygen therapy in the treatment of skin diseases, especially atopic dermatitis, psoriasis, diabetic foot, second degree burns and complications after cosmetic procedures. The review was based on the works published in the last twenty years (1999-2019), available in the following databases: PubMed, GoogleSchoolar, PEDro. The use of HBOT is becoming more common in the treatment of skin complications of diabetes, as well as burn wounds. It is estimated that HBOT reduces the risk of foot ulcers and amputation in diabetic foot syndrome. In addition, HBOT promotes faster healing of burn wounds, also with the use of allogenic skin grafts. By increasing the level of reactive oxygen species (ROS), hyperbaric oxygen therapy significantly supports the treatment of psoriasis and atopic dermatitis. Despite this, the exact mechanisms of hyperbaric oxygen are still poorly understood, and the use of HBOT in the treatment of skin diseases has not yet been included in treatment protocols.
A MODEL OF DISRUPTIVE TECHNOLOGIES DETERMINATION FOR DEFENSE SPHERE
Authors: KUPCHYN Artem , SOTNYK Vladyslav
Published: September 2021

The paper describes a model determining the list of disruptive technologies in the defense sector based on the apparatus of fuzzy logic. Input linguistic variables are indicators that determine the criticality of technologies. Each input indicator reflects the presence or absence of a certain feature in the evaluated technologies, so a simple linguistic evaluation is used. However, for the most part only objective evaluations are used without the expert’s opinion. The proposed model is presented in the form of seven fuzzy inference systems, which are arranged hierarchically. The method of bibliometric analysis for determining the prospects of technologies is described and improved. The level of technologies criticality is determined as a result of fuzzy evaluation. It is proposed to apply a new principle of technologies selection as disruptive or critical ones.
Analisis Tren Perubahan Intensitas Hujan (Studi Kasus: Jakarta dan Bogor)
Authors: Maitsa Tias Ravena , Kuntoro Arno Adi , Septiadi Deni
Published: September 2021

Rainfall intensity and drainage channel capacity are the main inputs in flood management infrastructure planning. The Intensity-Duration-Frequency (IDF) curve in a region has a different pattern from other regions. This study examines the temporal distribution pattern of rain and the IDF curve with case studies of the Jakarta and Bogor, represented by Kemayoran Rainfall Station and Citeko Rainfall Station, respectively. This study compared data analysis from the above stations with the ABM Method, Modified Mononobe, Indonesian National Standard for Calculating Flood Discharge, and Indonesian National Standard for Road Surface Drainage Design. The analysis results showed that the rainfall event in the Jakarta and Bogor areas was dominated by events of â‰¤ 4 hours with the highest percentage of rainfall volume at the beginning of the event (at the first two hours of the event). The observed hourly rainfall data has a significant difference pattern with the rainfall distribution calculated using the ABM and Modified Mononobe methods. The IDF curve obtained from the Base Curve on the Indonesian National Standard for Road Surface Drainage Design gives higher results than the IDF curve of the observation data. Meanwhile, the IDF curve calculated using the Mononobe Equation gives lower results than the IDF curve of the observation data. This study shows that standard design of rainfall duration and rainfall intensity for drainage infrastructure planning and flood management need to be continuously developed based on the latest observational data with better temporal and spatial resolution. Continuous effort in improving codes and design standard needs to be conducted to respond to climate change challenges, dynamic regional developments, and the increasing trend of flood events in Indonesia.
Psychotherapeutic Interventions for Dementia: a Systematic Review
Authors: Sukhawathanakul Paweena , Crizzle Alexander , Tuokko Holly , Naglie Gary , Rapoport Mark J.
Published: September 2021

Background and Objectives

While a range of psychotherapeutic interventions is available to support individuals with dementia, comprehensive reviews of interventions are limited, particularly with regard to outcomes related to adjustment and acceptance. The current review assesses studies that evaluated the impact of various forms of psychotherapeutic interventions on acceptance and adjustment to changing life circumstances for older adults with cognitive impairment.

Research Design and Methods

A systematic search of PubMed, PsycINFO, and CINAHL databases was conducted, restricted to articles published in English within the last 16 years (from 2003 to 2019). Twenty-four articles were identified that examined the effects of psychotherapeutic interventions on outcomes related to acceptance and adjustment which included internalizing symptoms, quality of life, self-esteem, and well-being. Fifteen studies examined interventions targeted towards individuals with cognitive impairment, while nine studies also targeted their caregivers.

Results

Interventions that impacted outcomes related to acceptance and adjustment (e.g., adaptation, depressive symptoms, helplessness, self-esteem, and quality of life) varied in their theoretical approach, which incorporated elements of cognitive behavioural therapy (CBT), problem-solving therapy, psychotherapy, reminiscence therapy, interpersonal therapy, mindfulness-based therapy, and meaning-based, compassion-focused therapy. Among all interventions, reductions in depression were the most commonly reported treatment outcome particularly among interventions that

 incorporated problem-focused and meaning-based therapies. Mixed findings were reported with regard to outcomes related to helplessness, quality of life, self-esteem, and life satisfaction indices for individuals with cognitive impairment.

Discussion and Implications

There is some support for the effectiveness of psychotherapeutic interventions on improving acceptance and adjustment in older adults with cognitive impairment, particularly with regard to reducing depressive symptoms.
Updated Inventory and Projected Requirements for Specialist Physicians in Geriatrics
Authors: Basu Monisha , Cooper Tracy , Kay Kelly , Hogan David B. , Morais José A. , Molnar Frank , Lam Robert E. , Borrie Michael J.
Published: September 2021

Background

The predicted growth of Canadians aged 65+ and the resultant rise in the demand for specialized geriatric services (SGS) requires physician resource planning. We updated the 2011 Canadian Geriatrics Society physician resource inventory and created projections for 2025 and 2030.

Methods

The number and full-time equivalents (FTEs) of geriatri­cians and Care of the Elderly (COE) physicians working in SGS were determined. FTE counts for 2025 and 2030 were estimated by accounting for retirements and trainees. A ratio of 1.25/10,000 population 65+ was used to predict physician resource requirements.

Results

Between 2011 and 2019 the number of geriatricians and COE physicians increased from 276 (235.8 FTEs) and 128 (89.9 FTEs), respectively, to 376 (319.6 FTEs) and 354 (115.5 FTEs). This increase did not keep pace with the 65+ population growth. The current gap between supply and need is expected to increase.

Discussion

The physician supply gap is projected to widen in 2025 and 2030. Increased recruitment and interdisciplinary team-based care, supported by enhanced funding models, and full integra­tion of COE physicians in SGS could reduce this increasing gap. In contrast to pediatrician supply in Canada, the specialist physician resources available to the population 65+ reflect a disparity.
Branching Out: Promoting Genre Diversity in Storytime
Authors: Kociubuk Jacqueline
Published: September 2021

How often do you consider genre when planning your storytimes? What percentage of the time do you think you’re sharing informational, or nonfiction books, with the families that attend your programs?If you answered only a little or not much to these questions, you are not alone. A recent study found that across all storytime age groups, informational books were being shared at a much lower rate than any other genre, both in the number shared per storytime and the time spent interacting with them.
S-t-r-e-t-c-h Your Storytimes: Exercise Programming Flexibility with Yoga
Authors: Reeder Victoria , Woshner Michelle
Published: September 2021

While books are rightfully the biggest and best-known tool in children’s literacy, storytellers and parents may find themselves looking for ideas to inject new life into old routines and reinforce what children see in stories.Adding yoga to a library storytime increases children’s opportunities for imaginative play and may help them control their emotions. With a little flexibility, you’ll soon be embracing movement as a regular element in your programs (when in-person programming returns, post pandemic!)
Editor’s Note
Authors: Verbeten Sharon
Published: September 2021

What’s your favorite Newbery Medal-winning book? For me, hands down, it’s the book I most recommend at my library—Neil Gaiman’s The Graveyard Book. (A close second is Last Stop on Market Street . . . but, wait, then there’s Flora & Ulysses . . . ).OK, you get my point. It’s tough to pick just one; thankfully, we have one hundred years of fantastic literature to choose from! And all so different—the list now, thankfully, includes a picture book and a graphic novel, and more books from BIPOC authors are being rightfully honored.
Adverse Childhood Experiences: A Bibliography to Foster Discussions and Reassure Children
Authors: McCaffrey Megan
Published: September 2021

Adverse Childhood Experiences (ACEs) are most often associated with traumatic events involving violence, abuse, or severe neglect. But federal government statistics on ACEs also consider the strain related to a child’s unstable home life. Highly stressful situations such as an incarcerated parent, living with a substance abuser, refugee status, prolonged separation from a parent, or a difficult parental divorce are all considered causes of ACEs.
Couples Who Collaborate: Sarah and Ian Hoffman
Authors: Sableski Mary-Kate
Published: September 2021

California couple Sarah and Ian Hoffman are the authors of Jacob’s New Dress (2014), Jacob’s Room to Choose (2019), and Jacob’s School Play (2021). The duo, who live in San Francisco with their two children, were inspired to write these books based on their experience raising their gender nonconforming son. They are passionate about making sure children see themselves in literature and represent their experiences in sensitive, informative ways.Sarah is a developer and Ian, an architect. By day, they renovate old homes together. Both have written and illustrated an array of articles and books in their other careers. The “Jacob” books, however, are their labor of love as a couple. Passionate about the issues they write about in their books, Sarah and Ian are a delight to talk with, and an inspirational couple.
Research Roundup: Recommended Online Resources
Authors: Diamant-Cohen Betsy , Prendergast Tess
Published: September 2021

Here are some free resources for children’s librarians who like to browse through research on topics related to our work with children.
Evaluation of automated hematology analyzer DYMIND DH76 compared to SYSMEX XN 1000 system
Authors: Velizarova Milena , Yacheva Teodora , Genova Mariana , Svinarov Dobrin
Published: September 2021

Background: DYMIND DH76 (DYMIND BIOTECH, China) is a new automated hematology system designed to provide CBC count, including a 5-part WBC differential count, and its analytical performance should be assessed before adoption for clinical use. Methods: The analyzer was evaluated according to the International Council for Standardization in Haematology guideline. The purposes of this study were to assess its analytical performance in comparison to SYSMEX XN 1000 hematology analyzer currently used in our laboratory, as well as to compare the automated and manual WBC differential. Results: Within-run precision in all concentration ranges was very good with coefficients of variation (CVs) between 0.02% and 2.5% except for platelets over 500×109/L (CV 9.5%). Within-batch imprecision showed CVs lower the declared deviation ranges. Accuracy (defined as trueness) was excellent for all CBC and white cell differential parameters, compared with the state of the art%. Linearity was confirmed with excellent regression coefficients (0.999-1.000), even in the lowest values, and carryover was ≤ 1%. Comparison between DYMIND DH76 and SYSMEX XN 1000 was also very good with correlation coefficients (R2) for WBC (1.000), RBC (0.999), hemoglobin (0.999) and PLT over 50×109/L (0.994) and R2 was lower but still acceptable (0.910) for PLT<50×109/L. R2 for neutrophils, lymphocytes, eosinophils, basophils, and monocytes were 0.974, 0.982, 0.957, 0.625, and 0.836, respectively, in the comparison between the manual and DYMIND DH76 automated differential WBC counts. Conclusions: With excellent analytical performance and acceptable comparative analysis, DYMIND DH76 hematology analyser covered the predefined international standards and requirements and is fully appropriate for clinical application.
Community saves lives
Authors: Bokan Dalibor , Fišer Zoran
Published: September 2021

The European Resuscitation Council (ERC) has produced these Systems Saving Lives guidelines, which are based on the 2020 International Consensus on Cardiopulmonary Resuscitation Science with Treatment Recommendations. The topics covered include chain of survival, measuring performance of resuscitation, social media and smartphones apps for engaging community, European Restart a Heart Day, World Restart a Heart, KIDS SAVE LIVES campaign, early warning scores, rapid response systems, and medical emergency team, cardiac arrest centres and role of dispatcher. The Systems Saving Lives chapter describes numerous and important factors that can globally improve the management of cardiac arrest patients not as a single intervention but as a system-level approach. The aim of this paper is to provide evidence-informed best practice guidance, about interventions which can be implemented by healthcare systems to improve outcomes of out-of-hospital and/or in-hospital cardiac arrest (OHCA and IHCA). The intended audience of the paper are governments, managers of health and education systems, healthcare professionals, teachers, students and laypeople.
Dynamics of indicators of the endothelium morphofunctional state of the brain microcirculatory bed vessels in rats with nitrite-induced Alzheimer's type dementia on the background of mesenchymal stem cell administration
Authors: Zorenko Yevgeniya , Gubina-Vakulyck Galina , Pavlova Olena , Gorbach Tatyana , Shchegelskaya Elena , Omelchenko Elena
Published: September 2021

Objective. The aim of this study was to assess the vascular endothelium morphofunctional state of the brain microcirculatory bed in rats with nitrite-induced Alzheimer's type dementia on the background of stem cells administration. Methods. 14 days after the experiment's end, the endothelin-1, VEGF-A, eNOS, von Willebrand factor were determined in blood serum by the enzyme immunoassay and photometric methods in rats with a model of nitrite-induced dementia (14 and 28 days of sodium nitrite intraperitoneal introduction) with and without mesenchymal stem cells (MSCs) administration. The brain slices were stained according to the Einarson's method and immunohistochemically by staging the reaction with antibodies to VEGF. Results. With an increase in the sodium nitrite administration period, the degree of damage of brain capillaries and neurons increased, dystrophy of "surviving" neurons developed and ability to produce VEGF decreased. After 14 days of "regeneration period" in groups without MSCs administration, further stimulation of VEGF production by endotheliocytes, cortex and hippocampus neurons of varying degrees was observed. In groups where stem cells were introduced, the number of capillaries increased, with endothelial hyperplasia in some cases. Conclusion. In animals with nitrite-induced dementia, dose-dependent damage to the endothelium of the capillary bed is noted. From the first day damage the vascular regeneration can be proved by VEGF expression. The stem cells administration more effectively stimulates capillary regeneration, as evidenced by a noticeable increase of the number of brain capillaries.
Ion exchange of sodium with hydrochloric acid in ZSM-5 zeolite
Authors: Škrba Milomirka , Obrenović Zoran , Došić Aleksandar , Gligorić Miladin , Đurić Biljana , Savić Ivan
Published: September 2021

ZSM-5 zeolites are highly silicate materials that have significant application in catalytic processes in petrochemistry, especially due to their high selectivity. Most reactions in the petrochemical industry are acid-catalyzed. The acidic properties of zeolite depend on the number of acid centers, i.e. the presence of hydrogen ions, and therefore, in this paper the possibility of reducing the sodium content in the pores of high silicate zeolite ZSM-5 with the modulus (SiO2 / Al2O3 = 1000) will be investigated, by applying ion exchange with hydrochloric acid. Chemical analysis of samples before and after ion exchange, and application of instrumental methods of X-Ray diffraction, FT-IR spectroscopy, and SEM analysis monitored the influence of the quantity of hydrogen ions on the chemical composition and the structure of ZSM-5 zeolite at different acid concentrations and at different exchange times. It has been shown that the application of ion exchange with hydrochloric acid can reduce the sodium content in zeolite. Even with the application of 5% HCl for 6 hours, the content of sodium in the zeolite is reduced by over 98%. A similar effect is achieved by applying more concentrated hydrochloric acid solutions for a shorter ion exchange time. By prolonging the ion exchange time, there are no significant changes in terms of the final ion exchange. On the other hand, the application of HCl solutions of higher concentrations leads to a slight decrease in the aluminum content in the zeolite, which may partially affect the structural stability of the zeolite. The results obtained by FT-IR and SEM analysis and X-Ray diffraction confirm the possibility of ion exchange with hydrochloric acid, without significant changes in the crystal structure of the zeolite.
Inhibition of corrosion of SS 18/8 alloy is sea water by Thiourea-Zn2+ system
Authors: Praveena Josephath , Gowri Somasundaram , Nethravathi Gunasekaran , Varsha Vincent , Vieyana Arockiasamy , Rajendran Susai , Rajendran Dorothy , Sasilatha Thankappan , Amalraj Antony
Published: September 2021

The corrosion resistance of SS 18/8 in natural sea water, in presence of an inhibitor named Thiourea-Zn2+ has been evaluated. Weight loss method, polarization study and AC impedance spectra have been employed to evaluate the corrosion resistance of SS 18/8 alloy in natural sea water, in presence of an inhibitor named Thiourea-Zn2+ system. Weight loss method reveals that Thiourea-Zn2+ system offers a maximum corrosion inhibition efficiency of 95% in controlling corrosion of SS 18/8 alloy in natural sea water. Synergism parameters are found to be greater than 1, confirming the synergistic effect existing between Thiourea-Zn2+. Adsorption of inhibitor molecules on the metal surface obey Langmuir adsorption isotherm. Polarisation study reveals that the inhibitors named Thiourea-Zn2+ system functions as mixed type of inhibitor. AC impedance spectra confirm the formation of a protective film on the metal surface. This formulation of Thiourea-Zn2+ may be used in cooling water systems where SS 18/8 alloy pipelines are used to carry sea water which is used as coolant. Also, Thiourea-Zn2+ coating can be given on SS 18/8 alloy to protect it from corrosion by sea water when SS 18/8 alloy is used as hull plates in ship industry.
Electrochemical behavior of various implantation biomaterials in the presence of various simulated body fluids: An overview
Authors: Santiagu John , Delinta Devadoss , Ajila Asirvatham , Selvam Annamalai , Muthukumaran Senthamarai , Rajendran Susai
Published: September 2021

In Modern medicine, metals and alloys are being used as implants. The Corrosion behaviour of various biomaterials under artificial body fluids are being studied. Artificial biomaterials are being implanted inside the human body to replace bone, teeth, etc. Even organs are being medically substituted with different types of metals such as mild steel, carbon steel, Ni-Cr alloy, Fe-Cr alloy, 22 carat Gold,24 carat Gold Tin, etc. due to their biocompatibility. This is achieved by connecting these metals directly with body tissues. The metals tend to corrode when it gets in contact with human body fluids. The body fluids thereby come in direct contact with tissues and the tissues are in contact with the metal thus causing the metal to corrode. And hence the corrosion resistance studies such as polarisation, AC impedance, cyclic voltammetric studies, etc, are being conducted in a medium like artificial blood plasma, artificial urine, artificial salvia, artificial sweat, Hank solution, Ringer solution, etc. The different body fluids are examined in the presence of different implantation metals by electrochemical methods and protective films are formed which are analyzed by various surface analysis techniques such as AFM, FTIR-UV, SEM, etc. The research findings will thereby be very helpful to the medical field.
Application of perlite and waste of paper production for manufacturing of cement clinker
Authors: Chernyak Lev , Melnyk Liubov , Dorogan Natalia , Gluschenko Dmytiy , Varschavets Petro
Published: September 2021

The possibility of making cement clinker with the integrated use of natural raw materials of volcanic origin and waste from paper production (scope) has been studied. The analysis of the dependence of the composition of the raw mixture based on the system chalkperlite-scope on the specified characteristics of cement using the specially developed computer program "Clinker" has been carried out. The composition of the initial mixture for the manufacturing of cement clinker was determined with a quantitative ratio of perlite: scope=1:3.5 has been investigated. The features of the formation of the phase composition and properties of the binder during the firing of the raw mixture in the range of maximum temperatures 1200-1400 0C are shown.
Las series de ficción televisivas en sus webs: análisis de las estrategias transmedia y de la participación activa de la audiencia
Authors: Rubio Jordán Ana Virginia
Published: September 2021

Este trabajo realiza un análisis comparativo de los sitios web de las series televisivas Cuéntame cómo pasó, de RTVE, y Amar es para siempre, emitida por Antena 3. Ambas ficciones destacan por su trasfondo histórico, un enriquecedor aporte documental en sus temas y el impacto que ha producido su emisión en la audiencia. Mediante la aplicación de una metodología de estudio de casos y el análisis de contenido, se pretende dar respuesta a la pregunta sobre si estas series han sido creadas teniendo en cuenta los principios básicos de las narrativas transmedia o si tan solo difunden contenidos extras a través de distintos formatos y pantallas. Uno de los objetivos es profundizar en la importancia de la participación de la audiencia a la hora de definir una serie como transmedia o no. Los resultados obtenidos permiten constatar el cambio que se ha producido en la audiencia de las series de ficción, puesto que el hecho de recurrir a segundas y terceras pantallas tras el visionado del capítulo está generando que las cadenas de televisión produzcan sus ficciones televisivas basándose en estrategias transmedia, con diferentes formas de participación por parte de la audiencia según se expanda el universo narrativo de cada serie. Entre otras constataciones, se puede concluir que el modo en el que una serie logra expandir su universo narrativo es a través de sus redes sociales y mediante la participación de un usuario activo y creativo.
Percepción social del periodismo en España
Authors: Sixto-García José , Soengas-Pérez Xosé , Rodríguez-Vázquez Ana-Isabel , Vázquez-Herrero Jorge , López-García Xosé
Published: September 2021

El periodismo está experimentando cambios sustanciales derivados de la evolución tecnológica y de la interacción social que esta evolución posibilita, en especial la participación de los públicos en la construcción del relato informativo. Al margen de los medios de comunicación tradicionales y digitales también han ido surgiendo nuevas fórmulas paraperiodísticas que están permitiendo la circulación de contenidos falsos o malintencionados. Estas circunstancias hacen presagiar que el periodismo está atravesando una crisis de credibilidad y confianza. Para comprobarlo se estableció una metodología cuantitativa orientada al resultado y se realizó una encuesta a ciudadanos en España (n = 700). Se investigó la percepción de la ciudadanía acerca de su propio conocimiento informativo, la figura del periodista como elemento de confianza, los valores que confieren credibilidad a la información y la incidencia de la desinformación. Los resultados demuestran que la población española evita una dieta mediática monomedia, aunque es crítica con la disposición de información de calidad en el contexto actual. La radio es el medio que más confianza transmite y la credibilidad se asocia al profesional por encima del medio donde trabaja. Las presiones del poder y la desinformación constituyen las principales amenazas para la profesión periodística, que únicamente puede recuperar su credibilidad mediante una apuesta firme por la verdad.
Participación ciudadana, servicio público y convergencia digital. La percepción de los profesionales de Radio Nacional de España
Authors: Barranquero Carretero Alejandro , Martínez Martín Manuel
Published: September 2021

El presente artículo analiza el valor que los profesionales de un medio público de referencia, Radio Nacional de España (RNE), atribuyen a la participación ciudadana en el marco del servicio público y la convergencia tecnológica. La metodología se apoya en entrevistas a una muestra intencional de 16 periodistas y cargos directivos, con preguntas que indagan en esta dimensión y en las potencialidades participativas de las redes sociales. Los resultados evidencian una concepción algo dispersa de las nociones de participación y servicio público, que es reflejo de la propia indefinición del marco regulatorio. Asimismo, la percepción oscila entre su adscripción a valores democráticos y una perspectiva más minimalista de la participación y centrada en criterios profesionales o en su utilidad para la programación radiofónica. Aunque las redes sociales han diversificado los canales para interactuar con las audiencias, su uso parece replicar el modelo radiofónico privado y se traduce en cambios más formales que no afectan ni a la renovación de los contenidos ni a los repertorios tradicionales de la participación.
Transmedialidad, álbum visual y videoclip musical. Estudio sobre el rap negro femenino y su corporeidad: Janelle Monáe y Tierra Whack
Authors: Sedeño Valdellós Ana , Guarinos Virginia
Published: September 2021

Este trabajo atiende a la reflexión sobre el álbum visual, derivación del videoclip, como una novedosa herramienta de la industria musical para promocionar en un contexto internacional, audiovisual y transmedia a sus artistas musicales. Además de describir su naturaleza, que combina la unidad y la diversidad de temáticas y motivos, optando por generar una narrativa específica en forma de storytelling, este artículo tiene como objetivo la profundización del objeto de estudio en un tipo de música concreto, la música popular urbana, el hip-hop y el rap, donde cursan importancia la originalidad musical y performática. De la propia selección del corpus, se añade otro foco de interés, como es el de las mujeres negras que han utilizado este tipo de formato. A través del análisis multimodal de los álbumes Dirty computer de Janelle Monáe y Whack World de Tierra Whack, se contempla a dos bandas la perspectiva de creación de storytelling transmedia y la de reivindicación de identidades múltiples como mujeres negras. Las conclusiones refuerzan la idea de que la performance se reinventa y se asiste a una nueva concepción de lo físico, que permite construir, por suma de identidades, un discurso de empoderamiento de las artistas. Se configura un mundo transmedia personal, siendo el cuerpo uno de los contenedores de significación de lo contemporáneo.
Drogas, complicidad y pertenencia. Los mensajes de los jóvenes en redes sociales sobre el consumo de sustancias adictivas
Authors: Perales Albert Alejandro
Published: September 2021

Se recogen en este artículo las principales características y conclusiones de una investigación centrada en los comentarios que jóvenes españoles difunden y comparten en algunas redes sociales a propósito del consumo de drogas. El interés del estudio, se centra, por un lado y atendiendo al objeto material de análisis, en conocer cuál es discurso dominante de dichos jóvenes en relación a esa práctica. Y por otro, atendiendo a su objeto formal, en evaluar la pertinencia de aplicar técnicas propiamente comunicativas basadas en el análisis de mensajes a un contenido generado por los usuarios, en lugar de otras tradicionalmente utilizadas para la investigación de fuentes primarias en los ámbitos metodológicos cuantitativo (encuestas) y cualitativo (entrevistas en profundidad, reuniones de grupo). Los resultados obtenidos ponen de relieve una valoración mayoritariamente positiva del consumo de sustancias psicotrópicas, frente al tratamiento habitualmente negativo recibe en los espacios mediáticos. En los mensajes analizados prima la percepción de las drogas como potenciadoras de la diversión, así como paliativo para las carencias caracteriales y sociales. Los jóvenes son conscientes de los riesgos para la salud del consumo de drogas, pero dan más importancia a los inconvenientes que les afectan de forma inmediata, como impedimento a sus aspiraciones relacionales, laborales e intelectuales. A la luz de estos resultados cabría preguntarse si los mensajes mediáticos contra el consumo de drogas consiguen influir suficientemente en la percepción de los consumidores potenciales o si, por el contrario, esos mensajes están alejados sus intereses, deseos y preocupaciones.
La verdad es hija de la imagen: reflexiones sobre la posverdad en los tiempos del giro visual
Authors: Vives-Ferrándiz Sánchez Luis
Published: September 2021

El objetivo del presente artículo es contextualizar la problemática sobre la posverdad y las imágenes en el contexto cultural del giro visual. Para ello se analiza la historia de las imágenes técnicas, desde la fotografía y su continuidad en la postfotografía, con la intención de subrayar la construcción cultural que está detrás de la asociación entre verdad, prueba y evidencia con relación a las imágenes. El artículo cuestiona la materialidad de la imagen, ya sea analógica o digital, como garante de su verdad o mentira y se cuestiona por las prácticas visuales que están detrás de esas asunciones. El artículo también analiza temas teóricos y sociológicos que son fundamentales para entender el contexto de la posverdad y las imágenes, como el giro visual, el capitalismo de ficción o las cultural virtuales. Finalmente, el artículo estudia el papel de las imágenes en el contexto geopolítico de las plataformas de la Web 2.0.
Del carrete a la pantalla: una aproximación a los usos y funciones sociales de la fotografía en los inmigrantes digitales
Authors: Cerdán-Torregrosa Ariadna , Espinar Ruiz Eva
Published: September 2021

El medio fotográfico se ha visto alterado por el proceso de digitalización, y, especialmente, por la popularización de smartphones dotados de cámaras de alta calidad y el desarrollo en la Web 2.0 de plataformas de social media. Las prácticas y significaciones que envuelven la fotografía digital parecen diferir de las propias de la cultura analógica. En este artículo, desde un enfoque exploratorio, se busca examinar las configuraciones que emergen alrededor de la fotografía digital, con especial atención a sus usos y funciones sociales, en comparación con la época de predominio analógico. En este sentido, se ha tomado como población objeto de estudio al colectivo de personas no profesionales de la fotografía, con edades comprendidas entre los 35 y 50 años, considerados inmigrantes digitales. Siguiendo la metodología cualitativa, se han realizado entrevistas semiestructuradas con fotoelicitación para una aproximación a los espacios de reflexión clave en relación con el fenómeno de estudio. Entre los resultados, destacan los cambios experimentados en la producción, almacenamiento, distribución e incluso remembranza de fotografías. La cámara, ahora anexa al smartphone, ha propiciado que la fotografía se convierta en un elemento más de la cotidianidad al estar presente en todos los espacios y, en efecto, aparecen nuevas formas de usarla. El propio acto de fotografiar está cada vez más vinculado al uso de plataformas de social media, donde la fotografía online y pasajera se antepone a la fotografía de papel como sinónimo de recuerdo. Lo comunicativo se antepone a lo conmemorativo.
O murmúrio da existência: apontamentos sobre o il y a em Levinas
Authors: Wu Roberto
Published: September 2021

O há (il y a), também denominado de “ser em geral”, é um conceito basilar para a filosofia de Emmanuel Levinas, sendo empregado reiteradamente em seus escritos para assinalar o caráter desértico e indeterminado da presença de uma densidade de vazio. Em nenhuma outra obra levinasiana essa noção recebe um tratamento tão exaustivo quanto em Da existência ao existente, muito embora ele não seja de todo claro. Uma dificuldade crucial advém do fato de que Levinas provém em geral um discurso indireto, negativo, sobre o há, em vista da própria natureza dessa noção, refratária a determinações de qualquer natureza. O presente artigo objetiva destacar os traços fundamentais do há nessa obra, o que implica, na medida em que não há um discurso direto sobre ele, investigar os eventos que lhe são correlativos. Considerando que o próprio Levinas se esforça em diferenciar esse conceito do dá-se ou há (es gibt) heideggeriano, a primeira seção do artigo examina a diferença entre essas concepções. Nas seções seguintes, expõe-se o há através dos eventos de neutralização (cansaço, preguiça e esforço), que manifestam o peso desse ser em geral, e de despersonalização (noite, horror e insônia), que colocam em questão a singularidade existencial, em vista da ubiquidade de uma plenitude de ausência, de um há anônimo, de um murmúrio da existência. A investigação encerra ressaltando que o conceito de hipóstase, que se tornaria fundamental para a ética levinasiana, na medida em que conduz à ideia de separação, advém da posição do sujeito sobre o há.
Enegrecer a Universidade para vivenciar o conhecimento
Authors: Freire Dantas Luís Thiago
Published: September 2021

Este ensaio propõe um questionamento sobre a construção do ambiente universitário da filosofia e sua dificuldade em dialogar com epistemologias fora do cânone. Para isso, problematizamos a imagem de quem produz conhecimento que exclui outras alternativas epistêmicas. O interesse, assim, é propor como os corpos negros atribuem à Universidade uma retomada epistêmica que se contrapõe à colonialidade universitáriafundamentada no epistemicídio.
O combate ao racismo e a descolonização das práticas educativas e acadêmicas
Authors: Gomes Nilma Lino
Published: September 2021

O processo de descolonização das mentes e das práticas como ação de combate ao racismo nas sociedades é tenso e conflituoso. A educação talvez seja o espaço em que essa tensão é mais visível. Há apagamentos históricos e epistemológicos presentes nos currículos, nas propostas e nas práticas educacionais, tanto na Educação Básica quanto no Ensino Superior que só serão superados se o campo educacional e a produção científica compreenderem-se como espaços que precisam descolonizar-se. Esse artigo discute o desafio da Educação Básica e do Ensino Superior na realização de práticas pedagógicas e epistemológicas que combatem o racismo e a desigualdade racial na escola e na universidade. Compreende esse processo como parte da descolonização das mentes, do conhecimento e dos currículos, tão necessários em países com histórico colonial e estruturalmente desiguais como é o caso do Brasil. Dialoga com o contexto político antidemocrático, instaurado no país após as eleições de 2018, com a ascensão da extrema direita ao poder e o seu processo de desmonte das políticas sociais e de igualdade racial implementadas pelos governos anteriores de cunho progressista. Questiona até que ponto o antirracismo se faz presente na sociedade e na educação brasileira, revelando um movimento contraditório presente nas ações e no imaginário social diante do racismo: as pessoas se mostram indignadas, porém, tendem a permanecer imóveis diante de um fenômeno tão perverso. Discute, ainda, que o combate e a superação ao racismo parecem uma boa proposta para colocar a descolonização em ação, tanto na sociedade quanto na educação, desde que não se invisibilize e silencie as negras, os negros e o Movimento Negro – suas lutas, memórias propostas políticas alternativas –, enquanto os principais sujeitos sociais e coletivos que nos reeducam nesse processo e com os quais temos muito ainda a aprender.