bluuebunny/crossref_metadata_2025 huggingface dataset:
The Search of a Malaria Vaccine: The Time for Modified Immuno-Potentiating Probes
Authors: Lozano José Manuel , Rodríguez Parra Zully , Hernández-Martínez Salvador , Yasnot-Acosta Maria Fernanda , Rojas Angela Patricia , Marín-Waldo Luz Stella , Rincón Juan Edilberto
Published: February 2021

Malaria is a deadly disease that takes the lives of more than 420,000 people a year and is responsible for more than 229 million clinical cases globally. In 2019, 95% of malaria morbidity occurred in African countries. The development of a highly protective vaccine is an urgent task that remains to be solved. Many vaccine candidates have been developed, from the use of the entire attenuated and irradiated pre-erythrocytic parasite forms (or recombinantly expressed antigens thereof) to synthetic candidates formulated in a variety of adjuvants and delivery systems, however these have unfortunately proven a limited efficacy. At present, some vaccine candidates are finishing safety and protective efficacy trials, such as the PfSPZ and the RTS,S/AS01 which are being introduced in Africa. We propose a strategy for introducing non-natural elements into target antigens representing key epitopes of Plasmodium spp. Accordingly, chemical strategies and knowledge of host immunity to Plasmodium spp. have served as the basis. Evidence is obtained after being tested in experimental rodent models for malaria infection and recognized for human sera from malaria-endemic regions. This encourages us to propose such an immune-potentiating strategy to be further considered in the search for new vaccine candidates.
Vaccine-Related Errors in Reconstitution in South Korea: A National Physicians’ and Nurses’ Survey
Authors: Lee Young Hwa , Harris Rebecca C. , Oh Hong Won , Oh Yongho , Vargas-Zambrano Juan C. , Choe Young June
Published: February 2021

Vaccine-related errors (VREs) result from mistakes in vaccine preparation, handling, storage, or administration. We aimed to assess physicians’ and nurses’ experiences of VREs in South Korea, focusing on reconstitution issues, and to understand the barriers to and facilitators of preventing them. This was a cross-sectional study using an internet-based survey to examine experiences of reconstitution-related errors, and experience or preference with regard to ready-to-use vaccines (RTU) by physicians and nurses. A total of 700 participants, including 250 physicians and 450 nurses, responded to the questionnaire. In total, 76.4% and 41.5% of the physicians and nurses, respectively, reported an error related to reconstituted vaccines. All errors had been reported as experienced by between 4.9% and 52.0% of physicians or nurses. The errors were reported to occur in more than one in 100 vaccinations for inadequate shaking of vaccines by 28.0% of physicians and 6.9% of nurses, incomplete aspiration of reconstitution vials by 28.0% of physicians and 6.4% of nurses, and spillage or leakage during reconstitution by 20.8% of physicians and 6.9% of nurses. A total of 94.8% of physicians had experience with RTU vaccines, and all preferred RTU formulations. In conclusion, this study highlights the high frequency and types of reconstitution-related errors in South Korea. RTU vaccines could help reduce the time needed for preparation and reduce the risk of errors in South Korea.
Diastolic and Systolic Longitudinal Myocardial Velocities of Healthy Racing Pigeons (Columba livia f. domestica) Measured by Tissue Doppler Imaging
Authors: Legler Marko , Koy Lajos , Kummerfeld Norbert , Fehr Michael
Published: January 2021

Tissue Doppler imaging (TDI) is a noninvasive sonographic method of acquiring and quantifying myocardial velocities. This technique is used in human and small animal medicine to diagnose cardiac diseases. Using this technique, we evaluated the longitudinal myocardial peak velocities of the interventricular septum, and the left and right ventricular free walls in the systole and diastole in 40 racing pigeons. The TDI examinations confirmed the movement of the heart base toward the apex in the systole and away from the apex in the diastole. Inhomogeneous distribution of the myocardial velocities with a statistically significant velocity gradient from the basal to the apical myocardial segments was found. The left and right free walls have significantly higher myocardial velocities than the myocardium of the septum. The myocardial velocities during active ventricular filling were significantly higher in the right ventricular free wall than in the left one. The validation of the method resulted in coefficients of variation between 3% and 33% for the systolic and 3% and 75% for the diastolic individual myocardial velocities. Weekly repeated measurements resulted in variation coefficients between 3% and 45% for systolic and diastolic myocardial velocities, respectively.
Multi-Criteria, Co-Evolutionary Charging Behavior: An Agent-Based Simulation of Urban Electromobility
Authors: Adenaw Lennart , Lienkamp Markus
Published: January 2021

In order to electrify the transport sector, scores of charging stations are needed to incentivize people to buy electric vehicles. In urban areas with a high charging demand and little space, decision-makers are in need of planning tools that enable them to efficiently allocate financial and organizational resources to the promotion of electromobility. As with many other city planning tasks, simulations foster successful decision-making. This article presents a novel agent-based simulation framework for urban electromobility aimed at the analysis of charging station utilization and user behavior. The approach presented here employs a novel co-evolutionary learning model for adaptive charging behavior. The simulation framework is tested and verified by means of a case study conducted in the city of Munich. The case study shows that the presented approach realistically reproduces charging behavior and spatio-temporal charger utilization.
Compliance with journalistic standards in the headlines of print and online publications
Authors:   Southern Federal University, Institute of Philology, Journalism and Intercultural Communications, OSIPOV Valeriy Nikolayevich
Published: January 2021

The headline is the most important part of the news. The headline should be readable, attractive, informative and concise. In this study theoretical methods of scientific knowledge were used. In the process of work methods of analysis and synthesis of information, as well as a method of classification, were also used. The aim of this work is to define standards for titles of print and online publications. Also, the main goal of this study is to determine the level of adherence to journalistic standards in the most popular Russian print and Internet publications. This paper provides a general description of journalistic standards, as well as standards for article titles. The study presents statistics on the popularity of Russian mass media, characteristics and examples of the main mistakes in article titles. This paper presents a detailed analysis of errors for some articles of popular Russian publications. The information presented in the results of this work can be used in the process of studying the standards for the titles of articles, as well as for the analysis of typical mistakes using the example of Russian publications.
ANALISIS YURIDIS PENEMUAN HUKUM TERHADAP PUTUSAN MAHKAMAH KONSTITUSI NOMOR 46/PUU-VIII/2010 TERHADAP ANAK YANG DILAHIRKAN DI LUAR PERKAWINAN YANG SAH
Authors: Risa Yulia
Published: January 2021

Putusan Nomor 46/PUU-VIII/2010 tanggal 17 Februari 2012, telah melakukan terobosan hukum dengan memutuskan bahwa Pasal 43 ayat (1) UU No. 1 Tahun 1974 tentang Perkawinan bertentangan dengan UUD 1945.  Dalam amar putusannya, MK menyatakan Pasal 43 ayat (1) UU Perkawinan tersebut bertentangan dengan UUD 1945 sepanjang dimaknai menghilangkan hubungan dengan laki-laki yang dapat dibuktikan melalui ilmu pengetahuan dan teknologi dan/atau alat bukti lain ternyata mempunyai hubungan darah sebagai ayahnya. Berdasarkan Putusan Mahkamah Konstitusi yang demikian itu menimbulkan konsekuensi hukum yang cukup mendasar dalam kehidupan masyarakat disebabkan putusan Mahkamah Konstitusi tersebut telah merubah konstruksi hukum ketentuan anak luar kawin sebagaimana dimaksud Pasal 43 ayat (1) UU Perkawinan menjadi diperluas tidak hanya anak yang lahir diluar perkawinan yang tidak dicatatkan saja tetapi juga anak yang lahir dari suatu hubungan yang tanpa ikatan atau hubungan yang insidentil, termasuk anak zina dan anak sumbang.

Keyword: Penemuan Hukum, Putusan Mahkamah Konstitusi Tentang  Status Anak Luar Kawin.
PUBLIC-PRIVATE PARTNERSHIP IN A CONSTITUENT ENTITY OF THE RUSSIAN FEDERATION: REGULATORY FRAMEWORK, INSTITUTIONAL ENVIRONMENT, IMPLEMENTATION EXPERIENCE
Authors: Avdeeva Irina
Published: January 2021

The article studies the regulatory framework, institutional environment and experience in implementing public-private partnership (PPP) mechanisms in the Kursk region. Shown is the position occupied by the Kursk region among the constituent entities of the Russian Federation in terms of the level of PPP development. Based on the data of the official register of agreements concluded (planned to be concluded) on the principles of public-private partnership in the Kursk region, the existing practice of implementing PPP projects was analyzed. It is noted that the PPP sector in the Kursk region is rather poorly developed, despite the formal elaboration of the regulatory framework and the presence of a certain institutional environment. The practice of PPP is limited to only one form — a concession agreement, is carried out only at the municipal level, the total volume of investments is insignificant. It has been established that a typical concession agreement facility in the region is a water supply facility for a village or village with a population of up to 50 people, and we are always talking only about modernization, re-construction and operation of existing facilities, but not about creating new ones. A comparison is made of the practice of implementing PPP projects in the Kursk region with the best rated constituent entity of the Russian Federation — the Samara region, based on the comparison, conclusions are drawn about the main problems and shortcomings that hinder the development of PPP in the Kursk region.
Peran Government Resources Management System pada Siklus Akuntansi Keuangan Negara (Studi Kasus Balai Pengelolaan Jalan Wilayah Jawa Tengah)
Authors: Apriliani Rifka Dwi , Panggiarti Endang Kartini
Published: February 2021

Penelitian ini meneliti penerapan aplikasi sistem Government Resources Management System di Balai Pengelolaan Jalan Wilayah Jawa Tengah. Berawal karena banyaknya kegiatan dan informasi yang harus secara cepat disampaikan, dilakukan pengambilan keputusan secara cepat, dan banyaknya daerah yang sulit terjangkau serta membutuhkan perjalanan lama, maka sistem GRMS ini memberikan kemudahan bagi pegawai instansi pemerintahan dengan memanfaatkan fasilitas internet. Penelitian ini merupakan penelitian kualitatif dan mendapatkan data dari wawancara dengan pelaksana GRMS. Berdasarkan hasil wawancara tersebut, banyak pegawai pemerintahkan yang masih belum familiar terhadap aplikasi sistem GRMS ini dan masih perlu mendapatkan pelatihan aplikasi ini. Program ini berbasis sistem dengan menggunakan aplikasi e-government dan untuk mengimplementasikannya lebih mengutamakan online daripada offline. Aplikasi yang dibutuhkan dalam GRMS diantaranya yaitu e-project, e-budgeting, e-procurement, e-controlling, e-delivery, dan e-performance.
Welfare and the depth of informality: Evidence from five African countries
Authors: Egger Eva-Maria , Poggi Cecilia , Rufrancos Héctor
Published: February 2021

This study explores the relationship between household poverty and depth of informality by proposing a new measure of informality at the household level. It is defined as the share of activities (hours worked or income earned) without social insurance for wage workers in the household. We apply cross-sectional regressions to five urban sub-Saharan African countries, showing that a household head informality dummy obscures a non-linear relationship between the depth of household informality and welfare outcomes. In some countries, a small share of income from formal jobs is associated with at least the same welfare as a fully formal portfolio. By assessing transitions between household portfolios with panel data for urban Nigeria, we also show that most welfare differences are explained by selection and that movements in and out of formality cannot sufficiently change welfare trajectories. The results call for better inclusion of informal profiles to social insurance programmes.
Criminal Policy and Technology
Authors: Zackseski Cristina
Published: February 2021

This text contains a comparative analysis of criminal policy in Brazil and Argentina based on their documents, studies and narratives about their electronic monitoring experiences. It starts from the most discussed aspects about electronic freedom controls to use them as a guide for exposing the research findings about the two studied realities. At the end, the result of the comparison is summarized and perspectives are presented so that the use of these devices can meet the public interests related to the criminal problem, as well as the management needs of contemporary control strategies, such as their costs and purposes.
Representations, access to justice and voice for women of younger and older generations
Authors: González Manuela Graciela , Galletti Hilda Gabriela
Published: February 2021

We start from the voices of women who go through situations of violence, their representations and access to justice, taking their particularities and difficulties in each period of life. We ask ourselves: How can we work better together from Legal Sociology to address these challenges interdisciplinary? How diverse must our justice institutions be to respond to the needs of women of different generations? How are the youngest girls given a voice in decisions about their future and in resolving their conflicts? The Administration of justice does or does not provide answers to women, they are adequate/inadequate according to the evolutionary moment and the conflicts they experience. To carry out this approach we will return to the concepts of governmentality, captivity and intersectionality, considering women as historical and cultural subjects.
IR 4.0 TECHNOLOGY: JEWEL IN PANDEMIC ERA
Authors: Abd Aziz Ahmad Shamsul , Mohd Noor Nor Azlina , Mohamed Khadijah
Published: January 2021

Coronavirus 2019 (COVID 19) was first reported in Wuhan, China in December 2019. The rapidly spreading coronavirus outbreak around the world had forced the World Health Organization (WHO) to declare COVID 19 as a pandemic on March 11, 2020. Crisis management for COVID 19 requires an integrated and realistic approach, and a focus on technology can assist matters to become more efficient. Although IR 4.0 technology is widely used in dealing with pandemic crises, the relevant laws relating to intellectual property laws, especially copyrights and patents with this technology must continue to be protected. This article discusses IR 4.0 technologies such as artificial intelligence (AI) and blockchain as applied in the era of pandemics and intellectual property protection associated with this technology. For this purpose, this article applies library research methodology by analyzing primary and secondary sources. This article concludes that IR 4.0 technology such as artificial intelligence and blockchain is seen as jewels in the era of pandemics because as with the use of this technology, human communication can be reduced. In addition, this technology can also reduce dependence on manpower. Improvements to intellectual property laws can be done in providing more protection against this IR 4.0 technology.
Forage Advantages of the Eastern Galega Green Mass Depending on the Cuttings
Authors: Степаненко А.В. , Зенькова Н.Н.
Published: February 2021

Представлены данные по урожайности и качественному составу зелёной массы галеги восточной. Установлено, что культура является высокоурожайной и в почвенно-климатических условиях северного региона Республики Беларусь обеспечивает три полноценных укоса, сформировав урожайность 484 ц/га зелёной массы. Максимальная урожайность зелёной массы (230 ц/га) была получена в первом укосе, что составило 47,5% от общей урожайности. Во втором укосе галега восточная по урожайности уступила первому укосу на 34,8% и сформировала 150 ц/га (31% от общей урожайности). Третий укос обеспечил 104 ц/га зелёной массы, или 21,5% от общей урожайности. Всего за три укоса галега восточная обеспечила общий сбор кормовых единиц с 1 га посева 98,1 ц/га: в первом укосе – 50,6 ц/га, во втором – 28,8 ц/га и в третьем укосе – 18,7 ц/га. Третий укос уступил второму на 54,0%, первому – в 2,7 раза. Общий сбор переваримого протеина с 1 га зелёной массы галеги восточной составил 15,6 ц /га: в первом укосе – 8,6 ц/га, во втором – 4,2 ц/га и в третьем – 2,8 ц/га. Сбор переваримого протеина в первом укосе составил 74% от общего сбора. Обеспеченность 1 корм. ед. зелёной массы галеги восточной переваримым протеином в среднем за вегетационный период составила 159 г, что превысило зоотехническую норму на 39–54 г. В первом укосе она составила 169 г, что выше, чем во втором укосе (146 г) на 16% и в третьем укосе (149) – на 13%.

Data on yield and quality composition of the Eastern galega green mass are presented. It has been established that the crop is high-yielding and in the soil-climatic conditions of the northern region of the Republic of Belarus provides three complete cuttings having formed a yield of 484 c/ha of green mass. The maximum yield of green mass (230 c/ha) was obtained in the first growth which amounted to 47.5% of the total yield. In the aftergrass the Eastern galega in terms of yield gave way to the first growth by 34.8% and formed 150 c/ha (31% of the total yield). The third hay crop provided 104 c/ha of green mass or 21.5% of the total yield. Just in three cuttings the Eastern galega provided the total harvest of fodder units from 1 hectare of sowing 98.1 c/ha: in the first growth - 50.6 c/ha, in the second – 28.8 c/ha and in the third cutting – 18.7 c/ha. The third cutting yielded to the second by 54.0%, to the first – 2.7 times. The total harvest of digestible protein from 1 hectare of the green mass of the Eastern galega was 15.6 c/ha: in the first growth – 8.6 c/ha, in the second - 4.2 c/ha and in the third – 2.8 c/ha. The digestible protein harvest in the first growth was 74% of the total harvest. Availability of 1 fodder unit of green mass of the Eastern galega by digestible protein averaged 159 g over the growing season which exceeded the zootechnic norm by 39–54 g. In the first growth it amounted to 169 g which is 16% higher than in the second aftergrass (146 g) and in the third cutting (149) – by 13%.
Analysis of Productivity Indicators and Reproductive Qualities of Cows Taking into Account Blood Relationship and Origin
Authors: Стефаниди М.С.
Published: February 2021

Представлен анализ показателей молочной продуктивности и воспроизводительных качеств чистопородных и высококровных голштинизированных коров ярославской породы в условиях одного из племенных заводов Ярославской области. В качестве объекта исследований были отобраны чистопородные и помесные полновозрастные коровы, имеющие три законченные лактации. Животные были разделены на три группы: 1 группа – чистопородные ярославские коровы; 2 группа – с кровностью 75% (3/4 по голштину) и 3 группа – 76% и более (средняя 83,0%). Наибольший надой по третьей лактации наблюдался у группы коров с кровностью 76% и более, различие с чистопородными коровами составило 1081,95 кг (Р ≥ 0,999). Самое высокое содержание жира имеют чистопородные ярославские коровы – 4,78%. Большая продолжительность сервис-периода отмечается у коров с кровностью 75% по голштинской породе и составляет 117,2 дня. Эта группа несколько уступает по индексу плодовитости чистопородным коровам и коровам с кровностью 76% и более. Исследования показали, что ярославские чистопородные и высококровные голштинизированные коровы имеют хорошие воспроизводительные качества.

An analysis of milk producing ability indicators and reproductive qualities of purebred and high half-bred Holsteinized cows of the Yaroslavl breed in the conditions of one of the breeding plants of the Yaroslavl region is presented. Purebred and mixed bred mature cowbanes with three completed lactations were selected as the subject of research. Animals were divided into three groups: group 1 – the purebred Yaroslavl cows; group 2 – with a blood relationship of 75% (3/4 by Holstein) and group 3 - 76% or more (average 83.0%). The largest yield for the third lactation was observed in a group of cows with a blood relationship of 76% or more, the difference with purebred cows was 1081.95 kg (P ≥ 0.999). Purebred Yaroslavl cows have the highest fat content – 4.78%. The long service period is observed in cows with a blood relationship of 75% for the Holstein breed and is 117.2 days. This group is somewhat inferior in birth rate index to purebred cows and cows with a blood relationship of 76% or more. The researches have shown that the Yaroslavl purebred and high half-bred Holsteinized cows have good reproductive qualities.
La enseñanza del patrimonio verde urbano a estudiantes universitarios mediante la construcción de sendas fitogeográficas
Authors: Benedetti Graciela Maria , Duval Valeria Soledad
Published: February 2021

Los espacios verdes y el arbolado de alineación integran la infraestructura verde de las ciudades. El objetivo del trabajo es realizar una propuesta sobre la enseñanza del patrimonio verde arbóreo a través de sendas fitogeográficas en la ciudad de Bahía Blanca (Argentina). Está destinada a estudiantes universitarios de las carreras del profesorado y licenciatura en Geografía. Se busca fomentar la capacidad de análisis sobre el objeto árbol para abordarlo desde una práctica visual. Para ello se aplicó una metodología que consiste en determinar un encuadre reflexivo que demuestre qué se quiere enseñar, la identificación e interpretación de las características de los árboles representantes de otros biomas y la elaboración de las sendas fitogeográficas basadas en un criterio definido. De esta forma, los estudiantes pueden desarrollar una práctica virtual, durante el período de pandemia, que les permitirá resignificar el espacio cotidiano y que se convertirá en el puntapié inicial para estudiar las formaciones vegetales en la escala local.
Influence of a new dispersant additive amount on the structural and rheological properties of chamotte concrete and samples from it
Authors: Kushchenko P. O. , Primachenko V. V. , Shulik I. G. , Savina L. K.
Published: February 2021

The use of dispersing additives in the composition of concrete mixtures helps to reduce water demand, increase flow, increase strength after hardening in air. The effect of a new dispersant additive amount on a polycarbonate base in comparison with the currently used phosphate-containing additive on the structural and rheological properties of chamotte concrete from a mixture of the “SSHBD” grade and samples from it has been investigated. The optimal amount of new dispersant additive on the polycarbonate base has been established and it has been shown that, in its effect on the structural and rheological properties of concrete from a mixture of the “SSHBD” grade and the properties of samples from it, it is similar to the phosphate-containing additive used at present. The change nature of the concrete flowability is practically the same. "Vitality" (i.e. the time period during which the concrete mass is suitable for performing high-quality lining by vibrocasting) of the compared concretes is ~ 4 hours; cold crushing strength of concrete samples with additives after hardening in air for 7 days and heat treatment at a temperature of 110 °C, as well as cold crushing strength of samples after firing at a temperature of 1350 °C are practically the same. The use of new polycarbonate-based dispersant can be recommended for the preparation of chamotte concrete as an alternative phosphate-containing additive.
Thermodynamic studies in the MgO – FeO – Al2O3 system
Authors: Borysenko O. M. , Logvinkov S. M. , Shabanova G. M. , Korohodska A. M. , Ostapenko I. A. , Ivashura A. A.
Published: February 2021

Prediction of the phase composition is one of the most important tasks in the development of new refractory materials and their operation in thermal units. The most complete information on phase interactions and thermodynamic stability of phase combinations is contained in the phase diagrams.

The article presents thermodynamic studies of the three - component system MgO – FeO – Al2O3, which is of great interest for the production of refractory materials with high performance characteristics. Based on the analysis of binary systems of this system, it was found that, the stable phases are MgO, FeO, Al2O3 and MgAl2O4, FeAl2O4. The results analysis of calculating the Gibbs energy for the reaction (FeO + MgAl2O4 = MgO + FeAl2O4) indicates the thermodynamic stability of the phases combination of MgO, FeAl2O4 to a temperature of 1141 K. Above the temperature of 1141 K FeO and MgAl2O4 are stable phases. Thus, in the system MgO – FeO – Al2O3 up to the temperature of 1141 K, the phases MgO – FeAl2O4 and MgAl2O4 – FeAl2O4 coexist, above this temperature — FeO – MgAl2O4 and MgAl2O4 – FeAl2O4.

The data obtained make it possible to predict thermally stimulated phase changes that give the effect of thermoplasticity and will be important for obtaining refractory materials with high performance characteristics based on the MgO — FeO — Al2O3 system.
Influence research of temperature heat treatment on the microstructure of alumina ceramics
Authors: Martynenko V. V. , Kushchenko Р. O. , Kushchenko K. I. , Krakhmal Yu. O. , Karjakina E. L. , Mishnyova Yu. Ye.
Published: February 2021

The JSC "URIR named after A. S. Berezhnoy" developed and introduced the technology of highly refractory alumina extra-dense ceramics. It is known that, the structure and properties of alumina ceramics in many cases depend on the temperature of its heat treatment, the holding time at the final temperature, the thermal unit, and a number of other factors. In order to study the processes of structure formation during of heat treatment the microstructure of alumina ceramic samples of two compositions (composition 1 with a moisture content of 30 %, as well as with dispersing and hardening additives, and composition 2 with a moisture content of 20 % only with dispersing additive) which were made by slip casting aqueous alumina slips based on reactive alumina α–from with Al2O3 content over 99 %, specific surface ~ 9 m2/g by electron microscopic analysis was studied. It was established that, after heat treatment at 1000 °C the beginning of sintering and recrystallization of corundum grains are observed, after heat treatment at 1200 °C take place packing of structure and recrystallization of α–Al2O3. After firing at 1400 °C the microstructure of samples composition 1 is represented to a large extent by crystals of tabular corundum with a particle size ~ 0.5—5.5 μm, predominant — ~ 2.5—3.0 μm. After firing at 1400 °C the microstructure of samples composition 2 is represented — by individual particles of a rounded and oval form with a size of ~ 0.5—3.5 μm, predominant — ~ 1.5—2.0 μm which are interconnected by intercrystalline layers. The microstructure of alumina ceramic samples of both compositions after firing at 1500 °C is similar and is composed of recrystallized corundum grains with a size of ~ 0.5—5.5 μm, predominant — ~ 1.5—2.0 μm, among which there are also larger α–Al2O3 grains, with a size of ~ 2—8 μm. After firing at 1580 °C the microstructure of samples is represented by a dense fine-grained structure of well-formed practically defect-free corundum grains, with a size of ~ 0.5—3.0 μm, among which grains of ~ 5—10 μm.
Effect investigation of a thinning additive on the physical and mechanical properties of celsian ceramics obtained by slip casting
Authors: Lisachuk G. V. , Pitak Ya. М. , Krivobok R. V. , Zakharov A. V. , Voloshchuk V. V. , Vabishchevich P. P. , Ryabynyna A. S.
Published: February 2021

The article discusses the physical and mechanical regularities of ceramics formation based on the BaO—Al2O3—SiO2 system by slip casting into gypsum molds, and also investigates the rheological properties of a slip based on сelsian and the physicochemical properties of products made from it.

The samples were made according to the following technology: the first stage is synthesis of celsian in a muffle furnace at a temperature of 1200 °C with a maximum temperature holding for 2 hours. The synthesis products were ground in a planetary mill to a residue on the № 0063 sieve of no more than 0.2 %. Then, slips with different moisture content without additives and with the addition of 0.10, 0.15 and 0.20 wt. % thinning additive Dolapix PC 67 were made. The second stage is to obtain samples by casting slip into gypsum molds. Firing of products took place in a muffle furnace at a temperature of 1350 °C with a two-hour holding.

The optimal amount of thinning additive in the celsian slip was determined, which corresponds to 0.10 wt. %. It was found that, in the studied area of technological parameters, the material acquires the best properties at a sample firing temperature of 1350 °C and is characterized by the following indicators: water absorption — 10.20 %, apparent density — 2.15 g/cm3, open porosity — 21.04 %.
The influence of spiritual leadership on turnover intention: assessing mediating role of quality of work life and moderating role of organization climate
Authors: Mariwa Neema Gasper , Betchem Garba , Adu Isaac Amankwaa , Andrews Minkah Yaw
Published: February 2021

The purpose of this study is to investigate the influence of spiritual leadership on employees’ turnover intention by assessing the role of quality of work life as a mediating role and organizational climate as a moderator. This study identifies and examines, using a cross-sectional survey research design, the empirical support for two alternative model – a direct effect model and an indirect effect model of the likely effect of spiritual leadership on employee turnover intention, mediated by quality of work life and organizational climate as moderator on hotel employees of Tanzania. The results of this study showed the inverse relationship of spiritual leadership and turnover intention mediated by quality of work life. In addition organizational climate moderated the effect of quality of work life on turnover intention such that the relationship was stronger when organizational climate was high. The findings from this work adds to the existing literature and provide hotel managers with knowledge on the effects of spiritual leadership on turnover intention of employees. This is an original practical examination and its significance partly comes from its research implications and practice implications.
Produção de derivados lácteos com valor agregado: fatores que influenciam a decisão
Authors: Rauta Jamir , Revillion Jean Philippe Palma , Winck César Augustus
Published: February 2021

Os fatores preponderantes para a produção de derivados lácteos de valor agregado são: oportunidade de negócio por meio da identificação e atendimento de um nicho de mercado, uso de insumos diferenciados e implementação de uma estratégia de posicionamento consistente. A capacidade de uma empresa gerar valor superior aos dos concorrentes perpassa pela formulação e implementação de estratégias, que visam à vantagem competitiva, e uma das maneiras de se fazer isso é ofertar produtos diferenciados. Este estudo pretendeu determinar como uma companhia produtora de derivados lácteos decide pela estratégia de agregação de valor ao seu produto final. Para isso, optou-se por um estudo de caso, com análise qualitativa e exploratória, após entrevistas com o Diretor-Executivo, e formulários semiestruturados. Como resultados obtidos, identificou-se que, além de oportunidade, conhecimento e gestão, outros dois fatores contribuem para a decisão de fabricar produtos distintos: cultura organizacional favorável a inovação, e a capacidade de mobilizar recursos diferenciados nesse processo. Esses fatores foram balizados pela aspiração de angariar um preço prêmio para uma matéria-prima exímia. Elementos foram delineados por estratégia de integração vertical e trade-offs, de modo a tornar o processo eficiente, maximizando os recursos e o lucro da empresa, garantindo sua perenidade no mercado.
Propriedades mecânicas em duas espécies de bambu submetidas a tratamentos térmicos
Authors: Mbamu Mayra Ferreira Alves de Oliveira , Nascimento Alexandre Miguel do , Garcia Rosilei Aparecida , Jesus Daiana Souza de
Published: February 2021

O bambu é um material muito versátil, que apresenta elevada resistência físico-mecânica, além de leveza e flexibilidade. Pode ser utilizado em diversas áreas, como alimentação, movelaria, construção civil, artesanato etc. O tratamento térmico pode ser aplicado ao bambu, para propiciar melhorias de estabilidade dimensional e modificar a cor e as propriedades mecânicas do material. O objetivo deste trabalho foi avaliar as propriedades mecânicas de Phyllostachys aurea e Bambusa tuldoides. O tratamento térmico foi aplicado em três temperaturas e durações de tempo: 160, 180 e 200ºC, por 15, 30 e 45 min, respectivamente. Os ensaios mecânicos foram realizados com a utilização da máquina de ensaio universal Contenco. Houve redução da resistência à compressão, com o aumento das temperaturas de tratamento. A resistência ao cisalhamento reduziu-se 47% em B. tuldoides, em comparação ao controle, considerando-se o tempo de tratamento de 45 min, e 59%, considerando-se  a temperatura de 200°C. Em P. aurea, houve redução de 31,5% de resistência ao cisalhamento, em comparação ao controle a 200ºC. O módulo de elasticidade à flexão (MOE) apresentou discreta elevação com o incremento da temperatura de tratamento
Nutritional characterization and productivity evaluation of landrace maize cultivars
Authors: Londero Patrícia Medianeira Grigoletto , Kelling Camila Somavilla , Alves Jamila Dos Santos , Bissacotti Anelise Pigatto , Reiniger Lia Rejane Silveira , Muniz Marlove Fátima Brião
Published: February 2021

O objetivo deste trabalho foi identificar cultivares crioulas de milho com altos teores nutricionais e produtividade. Determinaram-se os parâmetros biométricos, os teores de matéria seca, cinzas, proteínas e lipídios e o perfil de ácidos graxos e minerais dos grãos de 15 cultivares crioulas de milho e duas testemunhas melhoradas (‘BRS 1002’ e ‘BRS Missões’). As cultivares de milho foram cultivadas na safra 2010/2011, em Ibarama, RS, Brasil. As testemunhas melhoradas de milho apresentaram desempenho similiar ao da maioria das cultivares crioulas quanto aos parâmetros biométricos; no entanto, a ‘BRS 1002’ mostrou a maior produtividade. As cultivares crioulas ‘Cateto Amarelo’, ‘Ferro’, ‘Mato Grosso’ e ‘Cinquentinha’ mostraram-se mais nutritivas do que as demais cultivares analisadas. A mensuração do valor genético foi eficiente para as características analisadas nos grãos das cultivares. As cultivares estudadas, em especial as crioulas que apresentam maiores quantidades de nutrientes, podem ser empregadas na indústria alimentícia para a fortificação de alimentos e a produção de óleos.
Análise espaço-temporal de intoxicação por pesticidas no Rio Grande do Sul
Authors: Sasso Eloisa Lovison , Campos Lenon Moraes de , Penso-Campos Jéssica Mazutti , Sant'Anna Voltaire , Clasen Barbara
Published: February 2021

A intoxicação por agrotóxico é causada principalmente pelo consumo de alimentos contaminados e pela exposição aos agentes tóxicos, na aplicação ou no ambiente afetado. O objetivo deste artigo foi analisar os casos de intoxicação por agrotóxicos no Rio Grande do Sul. A metodologia usada foi: estudo ecológico, tendo como unidade de análise o conjunto dos casos de notificações de intoxicação por agrotóxicos, registrados no Sistema de Informação de Agravos de Notificação (Sinan). Calcularam-se as frequências relativas e o coeficiente de correlação de Pearson. No total houve 696 casos de intoxicação no Rio Grande do Sul, com tendência maior na população do sexo masculino (rp = 0,975; p = 0,000), de cor branca (89,9%), residente na zona rural (rp = 0,769 p = 0,043), na população com escolaridade de nível fundamental (74,5%), e a principal exposição ocorreu no trabalho (64%), em circunstância acidental (41,8%), tendo como classificação final a intoxicação por pesticida confirmada (66,4%). Registrou-se o maior percentual de casos no período de novembro a fevereiro, na macrorregião dos Vales (25,8%), Norte (14,5%) e Serra (10,7%). A conclusão foi que o estudo possibilitou apontar as tendências de intoxicação por agrotóxicos no Rio Grande do Sul, constituindo-se, assim, em importante instrumento no embasamento de políticas de controle no comércio e uso de pesticidas.
Estratégias de manejo pecuário na Caatinga: o caso de agricultores assistidos pelo projeto Sustentare na comunidade Sítio Areias, Sobral, CE
Authors: Silva Yuri Lopes , Rodrigues Taize Maria Muniz , Rodrigues George Paiva , Araújo Maria Evilene De , Fernandes Francisco Éden Paiva , Farias Jorge Luís De Sales , Fernandes Cellyneude De Souza , Gamarra-Rojas Guillermo
Published: February 2021

A pecuária é uma das atividades de maior relevância para o Nordeste do Brasil. O objetivo do presente trabalho foi descrever e discutir as estratégias de manejo da produção animal por agricultores familiares, além de realizar uma avaliação econômica dos suínos e aves. A pesquisa foi feita para avaliar as atividades realizadas na comunidade Sítio Areias, em Sobral, CE, de março a novembro de 2014. Para entender o funcionamento da pecuária nos agroecossistemas, realizaram-se: a entrevista em grupo, o calendário sazonal e o acompanhamento da rotina diária de manejo. Realizou-se, também, uma avaliação econômica da criação de não ruminantes. A avicultura apresenta elevado potencial de geração de renda monetária (RM) ao longo do ano, com valor agregado de R$ 741,00 e 60% do produto bruto. A suinocultura mostrou-se relevante na situação financeira da família dedicada a essa atividade, com RM de R$ 430,00; no entanto, é necessária a superação de dificuldades quanto ao precário manejo sanitário. A caprinocultura evoluiu na comunidade com a chegada do projeto Cabra Nossa de Cada Dia, mas não cumpre mais a função de fornecer o leite para o desenvolvimento infantil. O projeto Sustentare inovou a produção animal na região, pela integração de diferentes agroecossistemas que, normalmente, são manejados de forma independente por diferentes núcleos familiares.
Vitamin C supplementation in aquaculture activities
Authors: De Lima Costa Gomes Jeane , Blank do Amaral Aline Monique , Teixeira Marins Aline , Menezes Charlene , Rosso Storck Tamiris , Martinelli Suziane , Picolli da Silva Leila , Loro Vania Lucia , Clasen Bárbara
Published: February 2021

Neste estudo, investigaram-se os efeitos de diferentes níveis de vitamina C na dieta de peixes com biomarcadores de estresse oxidativo e parâmetros hematológicos em jundiás. Os juvenis foram divididos em três grupos e alimentados com diferentes quantidades de vitamina C: 1) 0, 2) 500 e 3) 1.000 mg kg-1. Dez peixes por grupo foram coletados em 0, 14 e 28 dias após o início do experimento. A atividade da catalase hepática aumentou no grupo 1 após 28 dias. A atividade da GPx nas brânquias diminuiu em todos os grupos, e a GPx hepática aumentou nos grupos alimentados com vitamina C. A atividade hepática da SOD e os níveis de NPSH nas brânquias e no fígado não foram afetados. Em todos os grupos, a atividade GST diminuiu nas brânquias e aumentou no fígado. Os níveis de peroxidação lipídica diminuíram no fígado e nas brânquias para os grupos 2 e 3. Os resultados deste estudo indicam que ambas as dietas, com 500 ou 1.000 mg/kg de vitamina C, contribuíram para diminuir o dano oxidativo de Rhamdia quelen, sugerindo que a suplementação de vitamina C no presente modelo experimental pode ser útil na aquicultura para superar possíveis mudanças oxidativas induzidas por condições ambientais adversas.
Impactos planejados e alcançados em projetos de pesquisa agrícola: um estudo de caso
Authors: Ferreira Carlos Magri , Stone Luís Fernando , Silva Mellissa Ananias Soler da
Published: February 2021

O objetivo deste estudo foi fazer uma reflexão sobre um tema inseparável da pesquisa agropecuária: sua função perante a sociedade. Busca-se ponderar sobre as recentes mudanças propostas no Sistema Embrapa de Gestão (SEG) quanto à gestão da programação de Pesquisa e Desenvolvimento (P&D), “novo SEG”, tendo como intento aproximar a empresa e a sociedade, verificando os reais impactos dos resultados de pesquisa e inovações nas resoluções de problemas, promoção do desenvolvimento e sustentabilidade da agricultura, em benefício da sociedade brasileira. Para a realização dessa tarefa, ou seja, saber se o modelo de gestão de CT&I proposto pelo “novo SEG” foi efetivo em verificar se os benefícios da pesquisa foram profícuos e os impactos foram percebidos pela sociedade, foi analisado o projeto Nucleus, atendo-se ao escopo dos objetivos, metas e resultados e sua relação com o modelo de gestão da inovação da Embrapa. A conclusão foi que a mudança se constitui num avanço, no entanto, apresenta gargalos para alcançar os intuitos desejados. Destaca-se que a determinação do problema de pesquisa e avaliação de resultados continuam no sentido “top-down”. Os principais pontos que necessitam ser aprimorados são: instituir processo de articulação com os atores do ecossistema de inovação, principalmente os usuários, para determinar demandas de pesquisa, bem como o uso de instrumentos de cocriação de solução, e a gestão, monitoramento e avaliação participativos.
Questões sobre proteção de cultivares no Brasil
Authors: Juk Yohanna Vieira , Fuck Marcos Paulo
Published: February 2021

Este artigo apresenta os principais debates acerca da proteção de variedades vegetais, em especial os pontos aplicados à legislação brasileira representada pela Lei de Proteção de Cultivares (LPC) nº 9.456, promulgada em abril de 1997, a qual, nos últimos anos, vem sendo objeto de projetos de lei para alterar seu conteúdo. Ao fazer um resgate histórico da construção de legislações de variedades vegetais, o objetivo do artigo é apresentar os pontos polêmicos envolvidos com a proteção de cultivares com base nas normativas internacionais, representadas pelas Atas da União para a Proteção das Obtenções Vegetais (Union pour la Protection des Obtentions Végétales – sigla Upov em francês) e com relação ao Acordo sobre os Aspectos de Direito de Propriedade Intelectual Relacionados ao Comércio (Trade-Related Aspects of International Property Rights – sigla Trips em inglês). Para tanto, serão apresentadas as principais discussões acerca da temática e os possíveis caminhos que os países poderão tomar no que diz respeito às políticas agrícolas de melhoramento de sementes. Com base em visões favoráveis e contrárias ao uso da propriedade intelectual em processos inovativos, os principais pontos de atenção da LPC são apresentados. A conclusão do trabalho é que os caminhos para a alteração da LPC são muitos, e os principais pontos de atenção demandam análise minuciosa.
Propriedades antioxidantes dos extratos da flor e da folha de malvavisco
Authors: Pontes Edson Douglas Silva , Araújo Mayara Gabrielly Germano de , Sales Handerson Lucas Duarte de , Silva Gezaildo Santos , Silva Nayara De Sousa , Soares Juliana Késsia Barbosa , Viera Vanessa Bordin
Published: February 2021

O objetivo deste trabalho foi avaliar as propriedades antioxidantes dos extratos da flor e da folha de malvavisco. Os antioxidantes sintéticos podem causar malefícios à saúde humana, por isso, há uma crescente busca por fontes de antioxidantes naturais. Os extratos foram obtidos por agitação por 15 minutos, a 40 ºC, utilizando-se álcool de cereais 60% e, a partir do extrato, foram determinados os teores de fenólicos totais, flavonoides totais e a atividade antioxidante, pelos métodos de FRAP, ABTS e IC50. Os resultados indicam que os extratos da flor e da folha de malvavisco são ricos em compostos fenólicos totais e flavonoides totais, além de se manifestarem como potentes antioxidantes. Conclui-se, assim, que os extratos de malvavisco são uma alternativa promissora de substituição dos antioxidantes sintéticos.
KEUNTUNGAN USAHA PENGOLAHAN LEMPOK DI KECAMATAN TEBING TINGGI KABUPATEN EMPAT LAWANG
Authors: Suryati Nila
Published: February 2021

Durian (Durio zibethinus Murray) is one of tropical fruit in Indonesia. Durian can be processed to be any kind of food, such as Lempok. Lempok in Tebing Tinggi District Empat Lawang Residence was managed in household scale to small industry.  The purpose of this research was to analyze production cost and benefit of lempok durian industry at Tebing Tinggi District Empat Lawang Residence. Research methode used on this research was case study, with respondence choosen purposively. From this research found that average production cost of this lempok industri as much as Rp. 151.255.732-, consist of average fixed cost Rp. 1.133.951 and average variable cost Rp. 150.121.781,-.  Meanwhile the benefit value of this product was Rp. 188.769.268 per year, obtained from 4.225 kilogram lempok and 81 kilogram crust of lempok per year.
ANALISIS USAHA INDUSTRI RUMAHTANGGA RENGGINANG BERAS KETAN DI DESA SUMBER AGUNG KECAMATAN ARMA JAYA KABUPATEN BENGKULU UTARA
Authors: Feriady Anton , Rianto Wendi
Published: February 2021

Penelitian ini bertujuan untuk mengetahui besarnya pendapatan, efisiensi dan tingkat kelayakan Industri Rumahtangga Rengginang Beras Ketan di Desa Sumber Agung Kecamatan Arma Jaya Kabupaten Bengkulu Utara.Penelitian ini dilaksanakan pada bulan Desember 2019 sampai dengan bulan Maret 2020 di Desa Sumber Agung Kecamatan Arma Jaya Kabupaten Bengkulu Utara.Penentuan lokasi dilakukan secara sengaja (purposive) dengan pertimbangan bahwa di desa ini merupakan penghasil rengginang beras ketan yang secara rutin memproduksi olahan rengginang beras ketan tersebut.            Metode yang digunakan dalam penelitian ini adalah metode sensus, ddengan mengambil seluruh populasi pengrajin usaha Rengginang Beras Ketan di Desa Sumber Agung Kecamatan Arma Jaya Kabupaten Bengkulu Utara.Data yang dikumpulkan dalam penelitian ini adalah data primer dan data sekunder.            Hasil analisis menunjukan bahwa pendapatan Industri Rumahtangga Rengginang Beras Ketan sebesar Rp. 1.191.829,55 Usaha Industri Rumahtangga Rengginang Beras Ketan di Desa Sumber Agung Kecamatan Arma Jaya Kabupaten Bengkulu Utara efisien karena nilai R/C sebesar 1,47 artinya nilai   R/C 1. Usaha Industri Rumahtangga Rengginang Beras Ketan di Desa Sumber Agung Kecamatan Arma Kabupaten Bengkulu Utara tidak layak karena nilai B/C sebesar 0.47 artinya nilai B/C 1. Serta nilai BEP produksi 71.70 Kg dan BEP Atas Dasar Sales (Penjualan) Rp. 2.509.420,45 maka usaha ini menguntungkan dan layak untuk dilanjutkan. Kata Kunci :   Efisiensi, Kelayakan,  Rengginang