bluuebunny/crossref_metadata_2025 huggingface dataset:
Technological System Strength Load Influence on the Flat Surface Machining Accuracy in Face Milling
Authors: Kravchenko I. I. , Kiselev V. L.
Published: March 2019

In engineering technology there is always a problem to improve the accuracy of manufacturing parts. When machining, the arising forces cause both tool and work-piece displacements. In this paper we consider the influence of changing cutting forces on the machining errors that arise in face milling of flat surfaces. With this approach to machining, the cutting forces depend on the work-piece width, the cutter diameter, the number of teeth and their geometry, the mutual bracing of the cutter and the work-piece, and the application point of the resultant force. The paper presents the dependences, allowing us to calculate the cutting force in face milling. The proposed model allows us to determine the vector of deviations in the instantaneous (fixed in time) arrangement of the cutter teeth at the specific points of the surface machined, since different cutting forces act on each tooth on the arc of the contact with the surface. It is recommended that the resulting errors arising from the elastic deformation of the technological system should be evaluated by the vector field, which represents deviations of points of the real surface profile from their nominal position, due to action of the variable cutting forces within one turn of the cutter.
P.L. Shilling (1786 – 1837)
Authors: Samokhin V. P. , Meshcherinova K. V.
Published: March 2019

A brief review of the main achievements of Pavel Lvovich Shilling, the inventor of the world's first valid model of the electromagnetic telegraph and binary code for transmitting letters and numbers, which served as an incentive for scientists from other countries, is presented. The information about the parents of Shilling, interesting facts from his activities, including the details of the work against the background of the historical situation in Europe of the first third of the XIX century, are given. P.L. Shilling is the author of many scientific works, including fundamental in Oriental studies, electrical engineering, cryptography and lithography. The facts of his contacts with European and German science of that time, in particular, with Andre Ampere, Alexander Humboldt and Thomas Sömmering, are given. The military engineering work of Shil-ling, the details of his participation in the Patriotic War of 1812 and in the oriental expedition, as well as the design, operation and testing of the electromagnetic telegraph created by him are described.
Finite Element Modeling of Surgical Scalpel with Piezoelectric Actuator
Authors: Skaliukh A. S. , Oganesyan P. A. , Solovieva A. A. , Gerasimenko T. E.
Published: March 2019

The main goal of the present work is mathematical and finite element modeling of component dynamic oscillatory systems, including piezoceramic elements, elastic elements and external influences from soft tissues that describe the operation of ultrasonic medical devices, as applied to instruments and medical devices for finding the most effective forms and modes of operation. Elastic and piezoceramic solids are modeled within the linear theory of elasticity and electroelasticity, and soft tissues are acoustically medium with certain viscosity coefficients. As a research tool used CAE package ACELAN, which builds three-dimensional and axisymmetric models of the device. In numerical experiments, a modal and harmonic analysis is performed, on the basis of which the most effective operating frequencies are identified.
Knowledge, attitude, and behaviour of Turkish dentists regarding contamination and prevention of Hepatitis B, Hepatitis C and HIV infection
Authors: Koseoglu Merve , Toptan Hande , Altindis Selma
Published: March 2019

Introduction: Dentists are at risk of Hepatitis B, Hepatitis C, and HIV infections in their professional practices. The purpose of this study was to determine the knowledge level, attitude, and behaviours of the Turkish dentists regarding contamination and prevention of Hepatitis B, Hepatitis C, and HIV infections. Methods: After receiving the required ethical and administrative approvals, a 33-item digital survey was applied within the context of the present study, and carried out amongst 58 dentists. Results: According to the results of this study, the knowledge level did not vary between different demographic features (p ˃ 0.05). However, the dentists’ attitude and behaviours were different. Post-exposure attitude towards Hepatitis B, Hepatitis C, and HIV infection did not vary between different demographic features (p ˃ 0.05). Female dentists who received education regarding infectious diseases more often got health check in case of injury (p ˂ 0.05). Female dentists felt more concerned than male dentists when they were treating infected patients, and they were more often using protective barriers (p ˂ 0.05). Dentists who were working at the university hospital and public hospital mostly had their Hepatitis B vaccinations more often than private clinics, also, dentists in university hospitals more often reported prefer to treat infected patients (p ˂ 0.05). Dentists who did not receive any education have reported that dental treatment of infected patients should be performed in specialised clinics (p ˂ 0.05). Conclusion: The Turkish dentists’ knowledge level, attitude, and behaviour were different. According to the findings of this study, efficacious education programs should be prepared for dentists to establish a positive attitude towards Hepatitis B, Hepatitis C, and HIV infected patients.Keywords: Dentists, Turkish, Hepatitis B virus, Hepatitis C virus, HIV.
ANALYSIS OF FACTORS AFFECTING THE VALUE OF EXPORT OF INDONESIAN COCOA BEANS IN 1996-2015
Authors: Hadi Aditya Fajariskieyanto , Setyo Wahyu Agung
Published: March 2019

The purpose of this research is to analyze the export value of Indonesian cocoa beans, using Ordinary Least Square (OLS). The dependent variable used in this research is the export value of Indonesian cocoa beans, while the independent variables are international price of cocoa beans, exchange rate rupiah to US$, domestic production of Indonesian cocoa beans and the Gross Domestic Product (GDP) using time series data from 1996-2015 (20 years). The result shows that the international price variable of cocoa beans has a positive and significant effect on the export value of Indonesian cocoa beans. The rupiah exchange rate against US $ has a negative and significant effect on the export value of Indonesian cocoa beans. Domestic production of Indonesian cocoa beans has a positive and significant effect on the export value of Indonesian cocoa beans. Gross Domestic Product (GDP) of the world has a positive and significant effect on the export value of Indonesian cocoa beans in 1996-2015.
INVESTMENT, LABOR AND THEIR EFFECTS ON ECONOMIC GROWTH OF PONOROGO REGENCY
Authors: Winanto Asis Riat
Published: March 2019

The condition of a well-developed and rapid economy is not the best guarantee for economic growth if it is not followed by increased employment opportunities and increased investment. This can be understood because with the increase in employment opportunities will be able to accommodate new workers who each year has increased. Therefore, population growth in an economy/region must be balanced with an increase in employment opportunities so that the existing workforce can be absorbed in the world of work. Besides that, there are also conditions that must be met for development and economic growth in order to run well (experiencing an increase), namely the existence of investment activities. It is expected that an increase in investment activities, then economic activities also increase, so that it will increase the economic growth of a region. The investment that takes place in Ponorogo Regency will certainly absorb a large number of workers. With these conditions will create economic activities in various sectors that are increasingly developing, and this will have an impact on increasing development and economic growth in Ponorogo Regency. From the results of the significance test in the level of error of 5%, it can be seen that the investment does not affect the growth of the economy of Ponorogo Regency. However, if viewed from the regression equation, it turns out there is an influence of investment on economic growth, although the effect is relatively small. So that high investment will also be able to increase economic growth in Ponorogo Regency. While labor has an influence on the economic growth of Ponorogo Regency at a significance level of 5%. And from the regression equation, labor has a relatively high influence on economic growth. And from the simultaneous test, it is proven that investment and labor together influence the economic growth of Ponorogo Regency.
SELF EFFICACY, SELF ACTUALIZATION, JOB SATISFACTION, ORGANIZATION CITIZENSHIP BEHAVIOR (OCB), EFFECT ON EMPLOYEE PERFORMANCE
Authors: Burhan Umar
Published: March 2019

Human resources are an important asset in achieving organizational goals. One of the factors that influence the success rate of an organization is employee performance. The purpose of this study is to determine the effect of self efficacy, self-actualization, job satisfaction and organization citizenship behavior (OCB) on employee performance in PT. Ispat Panca Putera (IPP), either simultaneously or partially. data collection was done by questionnaire and analyzed by using multiple linear regression analysis, F test and t test. The sample used in this study is 60 respondents from the total employee population of 150 people, using simple random sampling method.
Pekerja Imigran Perempuan dalam Perspektif Islam
Authors: Wardiono Kelik , Izziyana Wafda Vivid
Published: March 2019

Islamic law gives a high appreciation for the human equality. It happens because all humans come from one source, Allah S.W.T. Respecting of human rights is regulated in fiqih, holy Qur’an, and hadist. From the Islamic law perspective, the differentiate of human level is on their devotion. Working as a migrant worker is allowed in Islamic Law. State gives regulation for the Indonesian migrant in a constitution No 18, 2017 year. The constitution is provide to give all society to have work both of domestic and overseas with a certain period, of course they get salary. Working is a citizen’s right. The purpose of migrant is to get bigger result. Other factor which triggers the Indonesian citizen of Indonesia to change the fate is the difficulty of getting work. There are many kinds of work in this country. Various job opportunities that exist in this country but most of them have been occupied by Indonesian society. Consequently, it is being minimum opportunity for the next generation. Indonesian mindset of working abroad to be a migrant worker is a necessity. The real fact is when women work, and then they have to perform two roles, as a wife or a mother as well as a worker.  This article will discuss about the female position as a migrant viewed from the religion point of view, especially in term of Islamic law related to Indonesian female migrant workers.
Manajemen Public Relations (Humas) Pendidikan Islam: Kajian Tematik Al Quran dan Hadits
Authors: Jaelani Dian Iskandar
Published: March 2019

The concept of Public Relations is actually related to the activity of creating understanding through knowledge, and through these activities impacts will emerge. This text will discuss the management of public relationships and how in the Islamic perspective. with the method of tela'ah critical thinking from the author himself. Public Relations combined various imu and included in the ranks of social sciences such as political science, economics, history, psychology, sociology, communication and others. Public Relations also as a propaganda in Islamic teachings that serves as one of the ways to spread effective, efficient and optimal Islamic education.
ISTAWA Jurnal Pendidikan Islam (IJPI) Volume 3 No 2 Tahun 2018
Authors: Cover Daftar Isi
Published: March 2019

Pekerja Imigran Perempuan dalam Perspektif Islam Kelik Wardiono, Wafda Vivid IzziyanaImplementasi Nilai-Nilai Akhlak terhadap Dosen Kesehatan dalam Prespektif Islam di Akademi Kebidanan YogyakartaMukh NursikinManajemen Public Relations (Humas) Pendidikan Islam: Kajian Tematik Al Quran dan HaditsDian Iskandar JaelaniStrategi Pendidikan Unggul Berbasis Organisasi di Pimpinan Daerah Ikatan Pelajar Muhammadiyah PonorogoSri Wahyuni, Nuraini, Nurul AbidinSistem Kepemimpinan Islami: Instrumen Inti Pengambil Keputusan pada Lembaga Pendidikan IslamAfiful IkhwanPenerapan Corporate Governance Perguruan Tinggi IslamMoh. Subhan
Factors Affecting Physical Activity Participation Among University Students
Authors: Oluyinka Solomon , Endozo Anatalia
Published: March 2019

The Physical activities are indispensable to be healthy and away from illness, yet, students ignoring it. The factors affecting physical activity participation among university students in the Philippines examined in this study. Modified International Physical Activity Questionnaire adopted, Stata 13 and SPSS utilized to justify the objectives of study on a 470 samples. Findings revealed that participants who do physical activity for 3 days and accumulating at least 1500 metabolic equivalent tasks (MET) minutes per week or with combination of walking, moderate or vigorous intensity activities accumulating at least 3000 MET minutes were classified as highly active. Other participants were categorized as moderately active and low active/inactive. The results identified that lack of time due to busy lesson schedule was the most significant factors for not participating in physical activity among the samples. Priority on academic success over exercise was the most identified item that hinders individual to participate in physical activities. Thus, recommended the replication of this study to increase the generalizability of achieved results
Comparative Psychology of Children Who Experience Intra-familial Versus Extra-familial Victimization
Authors: Muller Paul
Published: March 2019

This study is based on secondary analysis from a sample of individuals attending colleges in the United States.  It is an examination of links between childhood victimization and subsequent depression.  An assessment of the effect on depression of intra- and extra-familial victimization was made to identify the means by which each affects depression.  It was hypothesized that victimization affects subsequent depression through its damaging impact on the development of social resources and personal resources, including family support, peer support, self-esteem, and mastery.  It was hypothesized that the importance of each mediator in explaining the link between victimization and depression differs by the type of victimization experienced.  To test these hypotheses, a series of hierarchical regression analyses were performed.  Findings indicate that victimization by non-family is related to depression independent of victimization by family, but victimization by family is not related to depression independent of victimization by non-family.  The resource variables demonstrated disparate mediating influences; each produced a different sized reduction in the strength of relationship between extra-familial victimization and depression.
An improved micropropagation protocol for lentisk (Pistacia lentiscus L.)
Authors: Yildirim Hakan , Onay Ahmet , Gunduz Kazim , Ercisli Sezai , Karaat Firat Ege
Published: March 2019

This study presents an efficient improvement in the in vitro propagation protocol for one cloned genotype of lentisk (Pistacia lentiscus L.) by assessing the effects of gibberellic acid (GA3) concentrations, different cytokinins and amino acids and their concentrations on shoot proliferation, the effects of shoot length on rooting and the effects of compost type (sterile and non-sterile) on acclimatization. The best growth medium for multiple shoot induction was the MS medium supplemented with a combination of 1 mg l−1 BA, 100 mg l−1 tryptophan and 0.5 mg l-1 GA3, which gave a mean shoot length of 1.64 ± 0.07 cm and a mean bud number of 5.46 ± 0.16. The best results in terms of root length, rooting rate and the number of roots per shoot were obtained with 2 cm long shoots. The rooted plantlets were readily acclimatized in the sterile compost. In conclusion, the micropropagation protocol developed in this study can be used for large-scale propagation of P. lentiscus L. in reforestation programmes.
Ritualisation of Crisis Communication: Crowd-enabled responses to the Stockholm terror attack on Twitter
Authors: Tikka Minttu
Published: March 2019

Digital connectivity enables ordinary people to participate in the social construction of crises. This article explores the crisis responses of common people through the prism of ritual communication in the case of the 2017 Stockholm terror attack. The ritual approach has helped to produce a nuanced understanding of the social functions of patterned and performative communication in crises and conflicts. However, the crisis communication of ordinary people has remained understudied from the viewpoint of ritualisation. Drawing from digital media ethnography and content analysis of a Twitter feed created around the hashtag #openstockholm, it is claimed that the ritualisation of crisis responses illustrates the active agency of ordinary people and contributes to ephemeral social cohesion.
Technical features of Norwood procedure as the most important factor, affecting the outcome of treatment of single-ventricle patients with obstructed systemic output
Authors: Avramenko A. A. , Khokhlunov S. M.
Published: March 2019

Theobjectivewas to improveNorwood procedure outcomes by discovering optimal surgical technique and perfusion strategy.

Material and methods.Results of treatment of single-ventricle patients with obstructed systemic output during 2005–2017 were analyzed (64 patients). 61 patients underwentNorwood procedure. Outcomes were compared between groups with different perfusion strategies and different methods of aortic arch reconstruction.

Results.Mortality in two-regional perfusion group was 23 %, in group of circulatory arrest and selective cerebral perfusion – 53 % (p=0.020). Early aortic obstruction was a risk factor of mortality (p=0.024). Median time of freedom from obstruction of aorta was 3 days in xenopericardium group, 76 days in pulmonary allograft group, and 390 days in isthmus resection and pulmonary allograft group (p=0.002).

Conclusion.Two-regional perfusion and aortic arch repair with pulmonary allograft patch after isthmus resection are our methods of choice as they allow to reduce the incidence of complications afterNorwood procedure.
Hemorrhagic complications of pancreatitis in surgical practice
Authors: Neledova L. A. , Mizgiriov D. V. , Duberman B. L.
Published: March 2019

Theobjectiveof the study was to detect the frequency and sources of hemorrhagic complications in patients with pancreatitis, evaluate the tactics and effectiveness of methods of hemostasis.

Material and methods.A retrospective analysis of hemorrhagic complications of pancreatitis was carried out in 40 patients.

Results.Bleeding developed mainly on the background of infected acute necrotic collections (77.8 %), the main source of bleeding was the splenic artery (37.0 %). Emergency laparotomy for bleeding was performed in 9 (22.5 %) patients, selective angiography was performed in 10 patients, it was effective only in 5 (50 %) cases. 12 (44.4 %) deaths were recorded in cases of arrosive bleeding.

Conclusion.The preferred tactics in case of bleeding from the retroperitoneal space during minimally invasive treatment is crossclamping of drains and endovascular hemostasis.
STUDY ON ELASTIC DEFORMATION OF INTERSTITIAL ALLOY FeCWITH BCC STRUCTURE UNDER PRESSURE
Authors: Nguyễn Đức Hiền , Nguyen Hoc Quang , Tran Cuong Dinh
Published: March 2019

The analytic expressions of the free energy, the mean nearest neighbor distance between two atoms, the elastic moduli such as the Young modulus E, the bulk modulus K, the rigidity modulus G and the elastic constants C11, C12, C44 for  interstitial alloy AB with BCC structure under pressure are derived from the statistical moment method. The elastic deformations of main metal A is special case of elastic deformation for interstitial alloy AB. The theoretical results are applied to alloy FeC under pressure. The numerical results for this alloy are compared with the numerical results for main metal Fe  and experiments.
Combined seed enhancement technique involving seed priming and coating for improvised anatomical potential and vigour of okra seeds (Abelmoschus esculentus L.)
Authors: L Anilkumar , K Malarkodi
Published: March 2019

The study was conducted to standardize the methodology of humid priming for improving the seed germination and vigour of okra seeds and to compare the efficacy of different enhancement techniques such as hydro priming, spin priming, seed coating and the combination of ‘humid priming + seed coating’ in improving the seed vigour characteristics of okra (Abelmoschus esculentus L.). In order to standardize the humid priming technique, okra seeds were subjected to humid priming for four different duration’s viz., 2, 4, 6 and 8 h, shade dried to original moisture content and subjected to evaluation of seed germination   under shade net conditions in raised beds. The results revealed that 4 h of humid priming was statistically significant to the rest of the durations, with respect seed germination and seedling growth. With respect to anatomical potential, the radicle length (3.39mm), cotyledon length (6.69mm) and cotyledon width (6.30mm), recorded by humid priming (4 h) was 62.2 %, 6.4 % and 2.6 % higher than control seeds. The second experiment conducted to compare the efficacy of hydro priming, spin priming, polymer coating and combination of humid priming + seed coating. The study revealed that seeds subjected to combination of humid priming (4 h) + seed coating (3g kg-1) recorded highest physiological potential in terms of germination percentage (87 %), seedling length (20.2 cm), dry matter production (421.3 mg), vigour index (1765), root volume (3.5 cm3) and root sheath (2.560 g) while the control recorded only 70 %, 15.1 cm, 328.7 mg, 1055, 2.0 cm3 and 1.532 g, respectively.
GRÃOS SECOS DE DESTILARIA COM SOLÚVEIS DE MILHO: UMA ALTERNATIVA NA ALIMENTAÇÃO DE RUMINANTES – REVISÃO DE LITERATURA
Authors: Hoscheid Werle Caroline , Zambom Maximiliane Alavarse , Syppereck Mirna Adriane , Fornari Josias Luis , Grunevald Dieisson Gregory , Tinini Rodrigo César dos Reis , Dessbesell Jessica Gabi
Published: March 2019

A utilização de resíduos agroindustriais na alimentação de ruminantes além de promover a redução no custo da alimentação, reaproveita a matéria orgânica de origem vegetal da indústria e evita o acúmulo destes resíduos e a contaminação ambiental, colaborando com a preservação dos recursos naturais e gerando sustentabilidade à produção animal. Neste sentido, os grãos secos de destilaria com solúveis (DDGS) é uma excelente fonte proteica na alimentação de ruminantes, além de proporcionar a produção de biocombustíveis de forma sustentável. Porém, sua inclusão na dieta de ruminantes deve ser realizada com precaução, evitando perdas produtivas do rebanho.
ASPECTOS TÉCNICOS E ECONÔMICOS DA ENGORDA DE LAGOSTAS: A EXPERIÊNCIA DO VIETNAM E PERSPECTIVA DE DESENVOLVIMENTO DA ATIVIDADE NO NORDESTE BRASILEIRO
Authors: Igarashi Marco Antonio
Published: March 2019

RESUMO: A proposta desta revisão é resumir as informações sobre os estudos da engorda de lagostas em gaiolas no Vietnam. Esta sinopse demonstra que os juvenis podem ser cultivados sob regime de confinamento e se adapta bem as condições artificiais com alimentação. Na aquicultura, na engorda juvenis de lagostas capturadas na natureza (Palinuridae) até o tamanho comercial está emergindo no Vietnam. No Vietnam o cultivo de lagostas em gaiolas no mar começou na década de 1990. Nesse contexto tradicionalmente a Panulirus ornatus e outras espécies são alimentadas com rejeito de pesca e pescado de baixo valor. O objetivo global da engorda pode ser o alívio da pobreza, e neste respeito para os criadores de lagostas é em particular uma oportunidade atrativa para brasileiros devido a captura de sementes de lagostas (com autorização dos órgãos competentes) e sua engorda envolve tecnologia simples, mínimo de capital, e é apropriado como uma atividade alternativa de renda para pescadores.
OCORRÊNCIA DE Amblyomma rotundatum Koch, 1844 (ACARI: IXODIDAE) EM Rhinella icterica (Spix, 1824) (ANURA: BUFONIDAE) EM MARICÁ, RIO DE JANEIRO, BRASIL
Authors: Barizon Cepeda Marcio Barizon , Bahia Michelle , Moreno Aline Braga
Published: March 2019

Anfíbios anuros são comumente parasitados por carrapatos da espécie Amblyomma rotundatum, os quais possuem alta predileção por animais ectotérmicos. Fêmeas e ninfas ingurgitadas de A. rotundatum foram coletadas em condições naturais a partir de um espécime de “sapo-cururu” da espécie Rhinella icterica. A identificação dos carrapatos foi feita através de características morfológicas. Este é o primeiro relato do parasitismo deste carrapato em sapos desta espécie no Município de Maricá, Região Metropolitana do Estado do Rio de Janeiro, Brasil.
LEPTOSPIROSE URBANA E SUA IMPORTÂNCIA EM REGIÃO FRONTEIRIÇA
Authors: Vechio Marco Aurélio Cunha Del , Sá Thais Camaso de , Borges Jessé Lahos , Gonçalves Daniela Dib
Published: March 2019

leptospirose é uma zoonose associada ao convívio próximo entre os animais e o homem podendo ser transmitido por meio do contato com água contaminada, contato dos animais sadios com animais contaminados, sendo os animais domésticos a principal fonte de infecção da leptospirose humana, pois estes animais vivem em contato direto com os seres humanos. No Brasil, a zoonose é endêmica, com a maior parte dos casos ocorrendo nas épocas de maior precipitação pluviométrica. Estudos relacionados à leptospirose urbana são importantes para determinar os fatores de risco da leptospirose e identificar possíveis reservatórios com o objetivo de conscientização da população. Os cães domiciliados podem adquirir a leptospirose pela convivência com outros cães e ratos que urinam em áreas comuns. Para o controle da leptospirose é importante a implantação de programas que visem melhorar as condições sanitárias e informar a população sobre a importância da vacinação dos animais, além da educação em saúde informando a população sobre a respectiva doença. Em região de fronteira estudos devem ser conduzidos a fim de se elucidar quais as possíveis espécies deste agente etiológico. Os sorovares mais prevalentes em pesquisa realizada para elucidar a situação da leptospirose canina na região urbana e zona rural do município de Cruz das Almas, Bahia foi Canicola, Copenhageni, Icterohaemorrhagiae seguido pelo Autumnalis. Nesta pesquisa foram avaliados ainda os possíveis reservatórios da doença para dar início ao entendimento da epidemiologia e posterior adoção de medidas de prevenção. A incidência da leptospirose humana tem crescido em países da América Latina associada aos desastres naturais e ao crescimento desordenado das cidades, sendo os cães sentinelas para detectar a presença de leptospirose no ambiente e são fatores chave para o entendimento da epidemiologia da doença, sendo importante o diagnóstico e tratamento dos animais doentes a fim de evitar a infecção humana.
EFEITO DA ADIÇÃO DE ANTIOXIDANTES SOBRE A VIABILIDADE DO SÊMEN BOVINO
Authors: Silva Amanda Formigoni da , Santos Ana Paula Zanfrilli dos , Guaitolini Carlos Renato de Freitas , Martinez Antonio Campanha , Maziero Rosiara Rosaria Dias
Published: March 2019

antioxidantes atuam no combate aos efeitos nocivos provocados pelos radicais livres, proporcionando melhor qualidade do sêmen fresco e criopreservado. As mudanças de temperatura provocadas durante os processos de congelação e descongelação são responsáveis pelos danos aos espermatozoides, alterando sua viabilidade e fertilidade. O estudo dos antioxidantes, os quais constituem a primeira linha de combate às espécies reativas de oxigênio (EROs), para a melhora da qualidade do sêmen criopreservado, torna-se de fundamental importância, para desenvolvimento de protocolos padrões e aplicáveis, uma vez que existem muitas controvérsias em relação ao tipo de molécula antioxidante e às doses, o momento adequado para ser acrescentado e possíveis alterações destes aos meios de criopreservação. Assim, este trabalho tem como objetivo estudar o efeito dos antioxidantes: catalase, α-tocoferol e piruvato de sódio adicionados em meio diluidor comercial para melhorar a viabilidade do sêmen bovino criopreservado. Inicialmente foram utilizados três touros, da raça Brahman, selecionados de acordo com o escore de condição corporal e exame andrológico. Oito ejaculados foram colhidos por eletroejaculação e imediatamente avaliados a motilidade e o vigor espermático. Em seguida, foram diluídos conforme os grupos experimentais em meio Botubov® (Botupharma Biotecnologia Animal) com adição do antioxidante piruvato de sódio nas concentrações de 1,5 µM, 3 µM e 5 µM e em seguida, as amostras foram congeladas. Numa segunda etapa, serão utilizados outros antioxidantes e concentrações, conforme descrito: 1) Diluidor BotuBov®; 2) Diluidor BotuBov® contendo 7% de crioprotetor e catalase nas concentrações de 20, 80 e 200 UI; 3) Diluidor BotuBov® contendo 7% de crioprotetor e α-tocoferol nas concentrações de 50 µM, 100 µM e 150 µM; 4) Diluidor BotuBov® contendo 7% de crioprotetor e piruvato de sódio nas concentrações de 1,5 µM; 3,5 µM e 5 µM. Após a descongelação do sêmen com a utilização do piruvato, as amostras foram analisadas quanto à motilidade total e progressiva e vigor espermático. Verificou-se que a adição de piruvato de sódio na concentração de 1,5 µM proporcionou uma melhora nos parâmetros de motilidade total e vigor espermático, demonstrando os benefícios de seu uso.
Reversible Insertion of CO into an Aluminium–Carbon Bond
Authors: Kong Richard Y , Crimmin Mark
Published: March 2019

While reversible main-group mediated processes involving H2 and alkenes have been reported and studied for over a decade, no such reversible processes involving CO have been reported. In this paper, we show that a [2.2.1] aluminium metallobicycle is capable of reversibly inserting CO to form a [2.2.2] metallobicycle at 100 °C. Eyring analysis allowed determination of the Gibbs activation energy of the back-reaction, CO elimination reaction with G‡298K = 26.6 ±3.0 kcal mol-1. Computational studies reveal a highly asynchronous, but concerted, transition state for CO insertion. The coordination of CO to aluminium precedes C–C bond formation. The reversible migratory insertion reaction mimics that known for transition-metal and marks an important step forward for main group systems.
Lysosome Targeting Chimeras (LYTACs) for the Degradation of Secreted and Membrane Proteins
Authors: Banik Steven , Pedram Kayvon , Wisnovsky Simon , Riley Nicholas , Bertozzi Carolyn
Published: March 2019

Targeted protein degradation is a powerful strategy to address the canonically undruggable proteome. However, current technologies are limited to targets with cytosolically-accessible and ligandable domains. Here, we designed and synthesized conjugates capable of binding both a cell surface lysosome targeting receptor and the extracellular domain of a target protein. These lysosome targeting chimeras (LYTACs) consist of an antibody fused to agonist glycopeptide ligands for the cation-independent mannose-6-phosphate receptor (CI-M6PR). LYTACs enabled a CRISPRi knockdown screen revealing the biochemical pathway for CI-M6PR-mediated cargo internalization. We demonstrated that LYTACs mediate efficient degradation of Apolipoprotein-E4, epidermal growth factor receptor (EGFR), CD71, and programmed death-ligand 1 (PD-L1). LYTACs represent a modular strategy for directing secreted and membrane proteins for degradation in the context of both basic research and therapy.
Our collective response to racism and intolerance
Authors: Ekeroma Alec J
Published: March 2019

Within the context of our Pacific communities in New Zealand, this heart-wrenching atrocity has caused serious soul-searching and reflection. There are a few themes that come to mind. Of immediate concern are issues with institutional racism and cultural competence in health care and the impact on our Pacific communities, and what leaders and all those who work in health, can and should do to help address these matters.
Integrating Health Navigation and Interpreting Services for Patients with Limited English Proficiency
Authors: Hilder Jo , Gray Ben , Stubbe Maria
Published: March 2019

Introduction
Pacific people and other communities with culturally and linguistically diverse backgrounds (CALD) face barriers to receiving good healthcare. Community health workers and health navigator roles have developed in recent years internationally and in New Zealand to address these barriers. Interpreters are also increasingly used to address language barriers. The interface between navigator and interpreter roles is explored in this study through the experiences and views of Pacific health navigators.
Methods
Qualitative interviews and focus groups were conducted with managers and staff of two health organisations catering for Pacific people: a community-based Pacific Navigation Service and a hospital based Pacific Health Unit. Interviews and focus groups were recorded, transcribed and analysed using a framework approach.
Findings
Participants identified a wide range of barriers to healthcare, and the various skills required in a navigator team. Navigators also perform a wide range of roles, something that can lead to difficulties in managing role boundaries. Overcoming language barriers is a major part of the navigator role, but their approach differs from that of professional interpreters. The concept of an explicitly combined navigator/interpreter role was supported, acknowledging the need for specific training in interpreting for navigators.
Conclusion
Pacific people working in health navigation roles (or similar) support in principle the idea of a combined health navigator/interpreter role, based on providing interpreter training to health navigators. Perceived benefits include greater role clarity if interpreting is an official part of the role, and greater continuity of care with a single person in both roles. A combined health navigator/interpreter role would be likely to lead to better health outcomes for Pacific people, and other cultural groups.
Robot Local Network Using TQS Protocol for Land-to-Underwater Communications
Authors: Irawan Addie , Abas Mohammad Fadhil , Hasan Nurulfadzilah
Published: March 2019

This paper presents a model and an analysis of the Tag QoS switching (TQS) protocol proposed for heterogeneous robots operating in diﬀerent environments. Collaborative control is topic that is widely discussed in multirobot task allocation (MRTA) – an area which includes establishing network communication between each of the connected robots. Therefore, this research focuses on classifying, prioritizing and analyzing performance of the robot local network (RLN) model which comprises a point-to-point topology network between robot peers (nodes) in the air, on land, and under water. The proposed TQS protocol was inspired by multiprotocol label switching (MPLS), achieving a quality of service (QoS) where swapping and labeling operations involving the data packet header were applied. The OMNET++ discrete event simulator was used to analyze the percentage of losses, average access delay, and throughput of the transmitted data in diﬀerent classes of service (CoS), in a line of transmission between underwater and land environments. The results show that inferior data transmission performance has the lowest priority with low bitrates and extremely high data packet loss rates when the network traﬃc was busy. On the other hand, simulation results for the highest CoS data forwarding show that its performance was not aﬀected by diﬀerent data transmission rates characterizing diﬀerent mediums and environments.
Fuzzy Clustering with Multi-Constraint QoS Service Routing in Wireless Sensor Networks
Authors: Agarkhed Jayashree , Kadrolli Vijayalaxmi , Patil Siddarama R.
Published: March 2019

This paper presents a fuzzy logic-based, service diﬀerentiated, QoS aware routing protocol (FMSR) oﬀering multipath routing for WSNs, with the purpose of providing a service diﬀerentiated path meant for communication between nodes, based on actual requirements. The proposed protocol initially forms a cluster by fuzzy c-means. Next, the building of a routing follows, so as to establish multiple paths between nodes through the modiﬁed QoS k-nearest neighborhood, based on diﬀerent QoS constraints and on optimum shortest paths. If one node in the path fails due to lack of residual energy, bandwidth, packet loss, delay, an alternate path leading through another neighborhood node is selected for communication. Simulation results show that the proposed protocol performs better in terms of packet delivery ratio, delay, packet drop ratio and throughput compared to other existing routing protocols.
Theoretical and Experimental Analysis of Cryptographic Hash Functions
Authors: Tchórzewski Jacek , Jakóbik Agnieszka
Published: March 2019

The paper presents a theoretical introduction to the cryptographic hash function theory and a statistical experimental analysis of selected hash functions. The definition of hash functions, diﬀerences between them, their strengths and weaknesses are explained as well. Diﬀerent hash function types, classes and parameters are described. The features of hash functions are analyzed by performing statistical analysis. Experimental analysis is performed for three certiﬁed hash functions: SHA1-160, SHA2-512 and SHA3-512. Such an analysis helps understand the behavior of cryptographic hash functions and may be very helpful for comparing the security level of the hashing method selected. The tests may serve as a basis for examination of each newly proposed hash function. Additionally, the analysis may be harness as a method for comparing future proposals with the existing functions.
ACO-Inspired Energy-Aware Routing Algorithm for Wireless Sensor Networks
Authors: Yamamoto Ryo , Nishibu Seira , Yamazaki Taku , Okamura Yasushi , Tanaka Yoshiaki
Published: March 2019

Multi-hop networks, such as WSNs, become an object of increasing attention as an emerging technology which plays an important role for practical IoT applications. These multi-hop networks generally consist of mobile and small terminals with limited resources, which makes them vulnerable to various network status changes. Moreover, the limited nature of terminal resources available, especially in terms of battery capacity, is one of the most important issues to be addressed in order to prolong their operating time. In order to ensure eﬃcient communications in such networks, much research has already been conducted, especially in the ﬁeld of routing and transmission technologies. However, conventional approaches adopted in the routing ﬁeld still suﬀer from the so-called energy hole problem, usually caused by unbalanced communication loads existing due to diﬃculties in adaptive route management. To address this issue, the present paper proposes a novel routing algorithm that utilizes ACO-inspired routing based on residual energy of terminals. Operational evaluation reveals its potential to ensure balanced energy consumption and to boost network performance.
Product of Three Random Variables and its Application in Relay Telecommunication Systems in the Presence of Multipath Fading
Authors: Krstic Dragana , Nikolic Petar , Aleksic Danijela , Minic Sinisa , Vuckovic Dragan , Stefanovic Mihajlo
Published: March 2019

In this paper, the product of three random variables (RVs) will be considered. Distribution of the product of independent random variables is very important in many applied problems, including wireless relay telecommunication systems. A few of such products of three random variables are observed in this work: the level crossing rate (LCR) of the product of a Nakagami-m random variable, a Rician random variable and a Rayleigh random variable, and of the products of two Rician RVs and one Nakagami-m RV is calculated in closed forms and presented graphically. The LCR formula may be later used for derivation of average fade duration (AFD) of a wireless relay communication radio system with three sections, working in the multipath fading channel. The impact of fading parameters and multipath fading power on the LCR is analyzed based on the graphs presented.
WannaCry Ransomware: Analysis of Infection, Persistence, Recovery Prevention and Propagation Mechanisms
Authors: Akbanov Maxat , Vassilakis Vassilios G. , Logothetis Michael D.
Published: March 2019

In recent years, we have been experiencing fast proliferation of diﬀerent types of ransomware targeting home users, companies and even critical telecommunications infrastructure elements. Modern day ransomware relies on sophisticated infection, persistence and recovery prevention mechanisms. Some recent examples that received signiﬁcant attention include WannaCry, Petya and BadRabbit. To design and develop appropriate defense mechanisms, it is important to understand the characteristics and the behavior of diﬀerent types of ransomware. Dynamic analysis techniques are typically used to achieve that purpose, where the malicious binaries are executed in a controlled environment and are then observed. In this work, the dynamic analysis results focusing on the infamous WannaCry ransomware are presented. In particular, WannaCry is examined, during its execution in a purpose-built virtual lab environment, in order to analyze its infection, persistence, recovery prevention and propagation mechanisms. The results obtained may be used for developing appropriate detection and defense solutions for WannaCry and other ransomware families that exhibit similar behaviors
LoCO: Local Cooperative Data Oﬄoading System Based on Location Information
Authors: Yamazaki Taku , Asano Kazuma , Arai Satoshi , Shimomura Yusuke , Miyoshi Takumi
Published: March 2019

The development of high speed mobile networks and the widespread use of smartphones have enabled users to easily obtain large data volumes via the Internet. This causes a heavy consumption of network resources, a burden on the available bandwidth. To solve such problems, a data oﬄoading method with a wireless LAN access point has been used to distribute traﬃc from mobile to ﬁxed networks. However, the method using wireless LAN access points can only change the communication paths but cannot reduce the overall traﬃc. This paper proposes a local cooperative data ofﬂoading system (LoCO) that reduces the overall traﬃc by sharing data, with direct communication between neighbors based on their location-related information. Moreover, the authors implemented the LoCO system on Android smartphones and clariﬁed its performance in comparison with a traditional client/server system through experiments to download data in a real-world environment.
Neuroplasticity and Microglia Functions Applied in Dense Wireless Networks
Authors: Kułacz Łukasz , Kliks Adrian
Published: March 2019

This paper presents developments in the area of brain-inspired wireless communications relied upon in dense wireless networks. Classic approaches to network design are complemented, ﬁrstly, by the neuroplasticity feature enabling to add the learning ability to the network. Secondly, the microglia ability enabling to repair a network with damaged neurons is considered. When combined, these two functionalities guarantee a certain level of fault-tolerance and self-repair of the network. This work is inspired primarily by observations of extremely energy eﬃcient functions of the brain, and of the role that microglia cells play in the active immune defense system. The concept is veriﬁed by computer simulations, where messages are transferred through a dense wireless network based on the assumption of minimized energy consumption. Simulation encompasses three diﬀerent network topologies which show the impact that the location of microglia nodes and their quantity exerts on network performance. Based on the results achieved, some algorithm improvements and potential future work directions have been identiﬁed.
Resultados a corto plazo, recurrencia local, supervivencia global y calidad de vida en pacientes intervenidos de cáncer de recto: Revisión sistemática comparativa entre abordaje abierto y laparoscópico.
Authors: Rodríguez Infante Antonio , Fernández Martínez Daniel , Monasterio Díaz María Pilar
Published: March 2019

En nuestra actividad profesional diaria es frecuente enfrentarse a una enfermedad tan prevalente como es el cáncer rectal. Para poder ofrecerles las mejores opciones terapéuticas a estos pacientes, es recomendable tomar una decisión consensuada por un comité tumoral multidisciplinar, mediante evaluación individualizada de los estudios de estadificación preoperatorios.

Está bien demostrado que la cirugía es el pilar fundamental del tratamiento curativo. Un aspecto importante, es la vía de abordaje empleada, ya que la laparoscopia presenta ventajas perioperatorias respecto a la cirugía abierta, cuando es realizada por cirujano con experiencia.

Es interesante tener en cuenta la vía de abordaje mínimamente invasiva siempre y cuando respete o mejore los resultados oncológicos, funcionales y de calidad de vida de la cirugía abierta convencional.
Linitis rectal: Una forma infrecuente de metástasis.
Authors: Fernández Martínez Daniel , Rodríguez Infante Antonio , García Flórez Luis Joaquín
Published: March 2019

Varón de 60 años portador de la mutación FVR506Q con resistencia a la proteína C activada y con antecedentes médicos de hipotiroidismo, enfermedad de Raynaud y esclerodermia con afectación pulmonar. Intervenido de urgencia por neoplasia de colon ascendente que debutó como cuadro obstructivo, por lo que se realizó una hemicolectomía derecha con anastomosis ileo-transversa. La histología y los estudios de extensión estadificaron la enfermedad como un carcinoma de células en anillo de sello, estadio III (pT3 pN2b M0). Posteriormente, se administró tratamiento quimioterápico adyuvante durante 6 meses. Recibió un total de 8 ciclos de esquema CAPOX (capecitabina oral cada 12 horas los primeros 14 días del ciclo, asociado con oxiliplatino intravenoso el día 1 de cada ciclo).
Mathematical model for assessing the reliability of cargo delivery on the Caspian-Black sea route of the new Silk Road
Authors: Matsiuk Viacheslav , Yurchenko Oksana
Published: March 2019

The article analyzes possible options of goods delivery routes from China to EU countries through Ukraine. The most preferred route is presented in the form of a technological scheme consisting of five elements. In order to assess the reliability of cargo delivery on the Caspian-Black Sea Route, a mathematical model is considered. Presented model takes into account such linear parameters as the time of the cargo operation at the points of departure and destination, the vehicle transporting time on the corresponding element of the route, the average time of overload in junction points of rail and sea transport.