bluuebunny/crossref_metadata_2025 huggingface dataset:
Original method of posterior aortoplasty for aortic valve replacement in surgical treatment of combined mitral-aortic valve diseases
Authors: Popov V. V. , Vitovskyi R. M. , Bakhovska Yu. V. , Bolshak O. O. , Vakulenko K. Ye. , Povoroznyk N. V.
Published: March 2021

Objective. To research of possibilities of reconstruction of aorta`s ostium and ascending aorta during aortic valve replacement and simultaneous correction of mitral valve defects at patients with narrow aorta`s ostium.

Materials and methods. The study group consisted of 46 patients with mitral-aortic heart diseases and combination with a narrow aortic mouth, who were operated on at the A

Amosov National Institute of Cardiovascular surgery for the period from January 1, 2006 to January 1, 2020. All patients underwent reconstruction of the aortic root and ascending aorta according to the original method of posterior aortoplasty. There were 26 men (56.5%) and 20 women (43.5%). The age of patients ranged from 23 to 72 years (average - 58.4±7.3 years). 8 (17.4%) patients belonged to class III NYHA, 38 (82.6%) - to class IV.

Results. Of the 46 operated patients at the hospital stage (30 days after surgery), 4 died (hospital mortality 8.7%). No fatalities were associated with surgical technique. The dynamics of echocardiographic parameters at the hospital stage was as follows: the systolic gradient on the aortic valve was before surgery 112.1 ± 15.2 mm Hg, on the aortic prosthesis at discharge - 23.2 ± 6.4 mm Hg; end-systolic index (ESI) of the left ventricle (ml/m²) - 59.1 ± 7.6 (before surgery) and 48.3 ± 5.9 (after surgery); left ventricle ejection fraction (EF) - 0.45 ± 0.04 (before surgery) and 0.53 ± 0.04 (after surgery).

Conclusions. The proposed original technique of posterior aortoplasty allows to effectively expand the mouth of the aorta for further implantation of an artificial heart valve of larger diameter. The technique is quite safe. At the hospital stage there are no complications directly related to the technique of operations. At the early postoperative period, the morphometric parameters of the left ventricle (EF and ESI) improved. The technique can be successfully used for the correction of combined mitral-aortic valve defects.
NUMERICAL SIMULATION AND PERFORMANCE EVALUATION OF BEAM COLUMN JOINTS CONTAINING FRP BARS AND WIRE MESH ARRANGEMENTS
Authors: Khan Faisal Hayat
Published: March 2021

This research paper aims at a detailed study of the seismic performance of reinforced concrete Beam-Column Joint (BCJ) under quasi-static cyclic loading. Firstly, the numerical simulations of the previously experimented specimen have been performed by Finite Element Method (FEM) using ABAQUS 6.14. Secondly, the parametric study has been conducted for the validated model by the introduction of Fiber Reinforced Polymer (FRP) bars in the form of Carbon Fiber Reinforced Polymer (CFRP) and Glass Fiber Reinforced Polymer (GFRP). An investigation has also been carried out to study the effect of T-304 Stainless Steel Wire Mesh (SSWM) on the strengthening of the finite element numerical model. Ten different numerical models were evaluated which included two sets, the first set includes five models having a control model and the models in which the steel reinforcement was partially or full replaced by CFRP and GFRP bars, the next set contains further five models in which stainless-steel wire mesh was wrapped around the core concrete in the aforementioned models. The results show the evidence for GFRP bars to be used in seismic designing, as have shown an almost 100% increase in deflection with the requisite amount of energy dissipation and ultimate strength capacities. Furthermore, the crack initiation was delayed by 30-40% in terms of deflection when stainless-steel wire mesh was used which controls the damage in the critical zone of BCJ. The prime factors in controlling the crack pattern, energy dissipation, ultimate strength and deflection capacity of beam-column joint were the position of FRP bars, reinforcement ratio, dimensions of beam-column joints and the available economy.
Kinetic Architecture Application at The Shed at Hudson Yards
Authors: Hamill Brian
Published: March 2021

As the arrangement of modern performance art evolves to be more dynamic and fluid, the physical and programmatic flexibility of performance spaces plays a vital role in the long-term sustainability of these facilities. Because of its transformable nature and ability to provide unprecedented flexibility, kinetic architecture is a fast-growing field which integrates architecture with electro-mechanical and structural engineering. Building functionality and performance integration is enhanced by moving various elements to reconfigure a space to the desires of its artists. Retractable roofs have been used in stadiums and other types of facilities to control environmental effects; however, this case study demonstrates how kinetic architecture has been creatively adapted to provide a highly flexible performance and exhibit space.

This paper provides a brief overview of the design and construction of The Shed at Hudson Yards. This twelve- story high moving structure, weighing 3725 tonnes (8,000,000 pounds), is designed to be moved from its nested position over a fixed building to its deployed position over the adjacent plaza. The Shed’s deployed position creates an enclosed space similar in size and scale to the main concourse of Grand Central Terminal. For additional flexibility, The Shed also features large movable wall sections which can be opened allowing air and pedestrian movement through the plaza space.
Operations Management Strategy of Cable-supported Bridge using Seismic Accelerometer
Authors: Lee Seung Han , Park Sung Woo , Park Kwang-Yeun , Kim Do-Kyoun , Choi Byounghan
Published: March 2021

This study presents the operations management strategy to respond to earthquake disasters using the acceleration records measured by seismic accelerometers installed on the primary structural elements of cable-supported bridges and those on the free fields around them. A two-step strategy in operations management is proposed for the urgent seismic safety assessment. In the first step, the seismic safety is evaluated with respect to the peak values in recorded acceleration time histories at the locations of the pylon foundation of bridge and the free field around it, and the corresponding management criteria for them are determined based on the existing disaster response manual for offshore bridges. In the second step, the peak values in displacement time histories, which are estimated from the recorded acceleration time histories, are utilized to assess the seismic safety at locations of the top and middle of pylon, and the center of girder of bridge, and the corresponding management criteria are determined based on the structural analyses under the response spectrum seismic loading. When an earthquake occurs, the safety of cable-supported bridge is evaluated urgently through comparisons of peak values in the recorded acceleration time histories and the estimated displacement time histories with the management criteria of accelerations and displacements determined in advance, respectively. The validity of the proposed strategy is verified though performing the safety assessments for several cable-supported bridges on service in Korea using the acceleration data recorded during recent Gyeongju earthquake in Korea.
Ensayos experimentales y análisis numérico de la estructura del material compuesto alternativo para la reparación de superficies de vuelo en aeronaves
Authors: Arroba Arroba César , Telenchana Flores Manuel , Paredes Salinas Juan , Fiallo Ortega Salomón , Vaca Ortega Henry
Published: March 2021

En la actualidad, los materiales compuestos de matriz polimérica son utilizados en múltiples aplicaciones, una de las áreas más importantes de aplicación es en el sector aeronáutico, debido a la relativamente baja densidad que tienen los materiales combinados. Estos compuestos tienen buenas propiedades mecánicas, comparables con materiales metálicos, pero que aportan beneficios adicionales. El objetivo de este trabajo es hacer los ensayos experimentales y el análisis numérico de la estructura del material compuesto alternativo para emplearlos en la reparación de las superficies de vuelo de aeronaves del CIDFAE. Se manejó un proceso ampliamente extendido de envasado al vacío (vacuum bagging) para obtener un compuesto más homogéneo, Lo que redujo los defectos en el procesamiento, y controló mejor la fracción de las fibras y el espesor global del compuesto. Se elaboraron probetas de resina epóxica reforzada con capas de tejido plano de tres fibras distintas de: carbono, vidrio y aramida, en diferentes orientaciones, que fueron ensayadas a tracción, flexión e impacto para determinar sus propiedades mecánicas. Se ha demostrado que los resultados conseguidos mediante la metodología analítica y el método de elementos finitos son aproximados a los resultados que se obtienen con ensayos destructivos. Los resultados experimentales muestran que los valores de resistencia a la tracción son mayores en los materiales de resina epóxica reforzados con 4 capas de fibra de carbono en orientación 0°-90°.
A national survey of ambulance paramedics on the identification of patients with end of life care needs
Authors: Eaton-Williams Peter , Barrett Jack , Mortimer Craig , Williams Julia
Published: March 2021

 Aims: Developing the proactive identification of patients with end of life care (EoLC) needs within ambulance paramedic clinical practice may improve access to care for patients not benefitting from EoLC services at present. To inform development of this
role, this study aims to assess whether ambulance paramedics currently identify EoLC patients, are aware of identification guidance and believe this role is appropriate for their practice.

 Methods: Between 4 November 2019 and 5 January 2020,
registered paramedics from nine English NHS ambulance service trusts were invited to complete an online questionnaire. The questionnaire initially explored current practice and awareness, employing multiple-choice questions. The Gold Standards Framework Proactive Identification Guidance (GSF
PIG) was then presented as an example of EoLC assessment guidance and further questions, permitting free-text responses, explored attitudes towards performing this role.

 Results: 1643 questionnaires were analysed. Most participants (79.9%; n
= 1313) perceived that they attended a patient who was formally unrecognised as within the last year of life on at least a monthly basis. Despite 72.0% (n = 1183) of paramedics indicating that they had previously made an EoLC referral to a General Practitioner (GP), only 30.5% (n = 501) were
familiar with the GSF PIG and of those only 25.9% (n = 130) had received training in its use. Participants overwhelmingly believed that they can (94.4%; n = 1551) and should (97.0%; n = 1594) perform this role, yet current barriers were identified as the inaccessibility of a patient’s
medical records, inadequate EoLC education and communication difficulties. Consequently, facilitators to performing this role were identified as the provision of further training in EoLC assessment guidance and establishing accessible, responsive EoLC referral pathways.

 Conclusion: Ambulance paramedics frequently encounter patients that they perceive are not receiving appropriate EoLC provision, and participants in this study overwhelmingly supported a role in highlighting this to primary care providers. Though many paramedics are already
making referrals for these patients, the majority are performed without knowledge of validated EoLC assessment guidance. Provision of EoLC assessment training might therefore be expected to improve the timeliness and sensitivity of referrals, potentially addressing current inequalities in
access to EoLC. The communication difficulties currently encountered when making a referral might be addressed by the provision of dedicated EoLC referral pathways. Future qualitative and quantitative evaluation of local initiatives providing both assessment training and referral pathways
would be hugely beneficial for revealing the benefits and barriers associated with the development of this role in practice.
INTELLIGENT WAYS FOR ENHANCING THE PROCESS OF PLACING, RETRIEVING, AND RECEIVING ORDERS FOR PRODUCTS AND SERVICES FROM A VIRTUAL SHOP
Authors: Olunlade B.A. , Efozia N. F.
Published: March 2021

Doing of business has been made easier, better, and faster with the use of the Internet, this has led to the changes in the way people do business. There is now a rapid worldwide growth trend towards virtual stores also referred to as digital shops or stores or e-commerce. The paper discussed the ways to intelligently enhance the process of placing, receiving and retrieving orders on products and services from the virtual shops by clients
Applying Theatre Principles to SoTL Research
Authors: Simmons Kit , Simmons Nicola
Published: March 2021

The same principles of engagement that actors use to engage deeply with the script and their roles can also be used to more engage deeply SoTL scholars in their lines of inquiry. In this paper, we draw parallels between actors’ approaches to theatre performance and deep engagement with SoTL inquiry. We build on a relational perspective to help others generate SoTL questions about interactions between instructor and students. We describe activities that draw on dramatic arts theory and through a process of “defining the issue, agitating the inquiry, and discerning the questions” (Simmons & Simmons, in press), we outline sample activities to help support others in honing SoTL questions and transforming the questions into successful SoTL project implementation.
Conversations and Reflections on Authentic Assessment
Authors: Grant Kimberley , Fedoruk Lisa , Nowell Lorelli
Published: March 2021

In this paper, we describe how academic colleagues from different fields used a theoretical framework for authentic assessment as the starting point for meaningful conversations about our teaching practices. We re-envision Hutchings’ (2000) taxonomy of SoTL questions as a fluid conversational cycle rather than a system of classification. Using the eight elements of authentic assessment as outlined by Ashford-Rowe et al. (2014) as a theoretical framework, we engage with the research literature, reflect on what is and what works from our previous teaching and learning experiences, and propose ideas and questions for what is possible moving forward.
Zero-truncated Poisson-Lindley distribution
Authors: Hilma Afida Nurul , Lestari Dian , Devila Sindy
Published: March 2021

In order to find a counting distribution that can handle the condition when the data has no zero-count. Distribution named Zero-truncated Poisson-Lindley distribution is developed. It can handle the condition when the data has no zero-count both in over-dispersion and under-dispersion. In this paper, characteristics of Zero-truncated Poisson-Lindley distribution are obtained and estimate distribution parameters using the maximum likelihood method. Then, the application of the model to real data is given.
LATIHAN TEKNIK DASAR DAPAT MENINGKATKAN HASIL RENANG GAYA BEBAS
Authors: Tahapary Johni Melvin , Syaranamual Jusak
Published: March 2021

Penelitian ini bertujuan untuk mengetahui: pengaruh latihan teknik dasar terhadap kemampun renang gaya bebas siswa sma negeri 5 ambon. siswa putra SMA Negeri 5 Ambon belum mampu menguasai dan melakukan teknik dasar renang dengan baik. khususnya pada  gerakan lengan renang gaya bebas karena pada saat mengangkat lengan dari dalam air, sudut yang di bentuk pada lengan terlalu besar, sehingga membuat tarikan pada renang sangatlah lemah proses latihan lebih di dominankan pada latihan untuk meningkatkan komponen kondisi fisik yaitu daya tahan daripada latihan teknik dasar dalam renang. Populasi dalam penelitian ini siswa putra SMA Negeri 5 Ambon berjumlah 20 orang. Dalam penelitian ini karena semua populasi dapat dijadikan subjek penelitian oleh peneliti dalam pemberian perlakukan atau orang coba, maka dapat dikatakan penelitian ini adalah penelitian populasi (population research) dan sampel ditiadakan. Hal ini diperkuat dengan pendapat (Maksum, 2012) penelitian populasi adalah keseluruhan individu atau objek yang dimaksudkan untuk diteliti.
STUDI KASUS PEMBELAJARAN GEOMETRI ANALITIK
Authors: Pasandaran Rio Fabrika , Mufidah Mufidah
Published: March 2021

Penelitian ini berbentuk studi kasus yang bertujuan untuk mengungkap temuan-temuan praktis yang dapat dijadikan dasar dalam pengembangan pembelajaran Geometri Analitik, khusus pada materi irisan kerucut. Data penelitian dikumpulkan melalui teknik observasi, catatan lapangan dan tes hasil belajar. Hasil penelitian menunjukkan bahwa orientasi pembelajaran harus mengarah pada proses investigasi dengan prinsip identifikasi semua konsep yang mendasari konstruk definisi, aksioma, atau teorema (Geometry), integrasi konsep-konsep (secara sistematis) menjadi suatu prinsip (Occupation), analisis hubungan antar konsep yang membentuk suatu prinsip (Analitycal), membangun komunikasi interaktif dan hubungan ketergantungan sosial yang positif serta mengambil peran dan tanggung jawab secara individu dan berkelompok terhadap proses  penyusunan pengetahuan secara koheren (Learning System)
Стратегия развития обрабатывающей промышленности: иллюзия прорыва
Authors: Алексеев A. В.
Published: March 2021

 В статье рассмотрены теоретико-методологические основы разработки Сводной стратегии развития обрабатывающей промышленности Российской Федерации до 2024 года и на период до 2035 года. Показано, что некритический подход разработчиков к современным концепциям глобальной экономики, с одной стороны, формирует методологически спорную базу стратегии, с другой – ставит под сомнение как ее цели, так и средства их достижения. Обосновывается вывод о невысокой ценности стратегии как инструмента стратегического планирования – на том основании, что в ней нет четко прописанных зон ответственности государства и бизнеса за реализацию продекларированных целей.
Analisis Penyimpangan Pendugaan Bobot Badan Domba Ekor Gemuk Jantan Dengan Menggunakan Pita Ukur Rondo, Rumus Schoorl dan Timbangan Digital di Pasar Hewan Babat
Authors: Suprayogik Suprayogik , Susanto Edy , Wardoyo Wardoyo
Published: March 2021

Usaha peternakan Domba Ekor Gemuk (DEG) hingga saat ini masih didominasi oleh peternakan rakyat dengan skala usaha kecil dan sistem pemeliharaannya bersifat tradisional. Sistem pemasaran domba di wilayah Kabupaten Lamongan masih menggunakan metode taksiran. Salah satu cara untuk memperkirakan bobot badan adalah dengan mengukur lingkar dada ternak karena lingkar dada seekor ternak memiliki korelasi yang sangat kuat untuk menduga bobot hidup ternak. Beberapa cara yang dapat digunakan untuk menentukan bobot hidup ternak daalah menggunakan rumus Schoorl dan pita ukur Rondo.Penelitian ini dilaksanakan di Pasar Hewan Babat. Materi yang digunakan dalam penelitian ini adalah kambing Peranakan Etawa jantan sebanyak 34 ekor. Penelitian menggunakan metode Purposive Random Sampling. Data hasil penelitian dianalisis menggunakan Uji-T. Hasil penelitian menunjukan bahwa nilai T hitung (t) antara rumusSchoorl dengan timbangan Digital lebih besar dari T tabel (t0,05) yaitu (t = 22,406 ≥ t0,05 = 2,021), nilai T hitung (t) antara pita ukurRondo dengan timbangan Digital lebih besar dari T tabel (t0,05) yaitu (t=19,47 ≥ t0,05 = 2,021 ) dan nilai T hitung (t) antara pita ukurRondo dengan timbangan Digital lebih besar dari T tabel (t0,05) yaitu(t = 3,113 ≥ t0,05 = 2,021). Hasil tersebut menandakan bahwa terdapat penyimpangan yang signifikankan dalam pendugaan bobot badan domba Ekor Gemuk jantan di Pasar Hewan Babat.
Кореляційний алгоритм радіолокаційного розпізнавання повітряних об'єктів по їх дальнісним портретам з відмовами
Authors: Лещенко С.П.
Published: March 2021

Наводяться результати дослідження радіолокаційного розпізнавання повітряних об'єктів по їх дальнісним портретам з використанням кореляційного алгоритму. В якості основної ознаки розпізнавання розглядається радіолокаційний дальнісний портрет, що отримується при використанні зондуючих сигналів з високою розрізнювальною спроможністю по дальності. В якості додаткових ознак розглядаються траєкторна ознака та ознака роторної модуляції. Особливістю роботи кореляційного алгоритму є можливість формування рішення “відмова”, крім рішень на користь одного з типів цілей, по яким було виконано навчання системи. Така особливість зменшує вірогідність видачі помилкових рішень при зменшенні відношення сигнал – шум, або при спостереженні цілі невідомого типу. Дослідження виконані методом математичного моделювання. Дослідження розпізнавання виконувалися для 20 типів повітряних об'єктів, що включали турбореактивні літаки, гвинтові літаки, вертольоти та ракети. Отримані чисельні значення показників якості розпізнавання типу повітряного об'єкту.
Investigation of the mechanism for processing predicted frames in the technology of compression of transformed images in computer systems and special purpose networks
Authors: Тимочко О.І. , Ларін В.В. , Шевяков Ю.І. , Абдалла А.
Published: March 2021

The analysis of image processing technologies shows the main practice way to improve the quality of image processing. It is a preliminary analysis and subsequent image processing. It depends on the result of the preliminary analysis (filtration, sharpening, noise reduction, etc.). However, when selection of the method of preliminary analysis, an intermediate evaluation of results, selection of the subsequent processing method, etc. decision makers involved. This is not acceptable for practical implementation in automatic processing and transmission of video information systems. The main difficulties in working with video are large volumes of transmitted information and sensitivity to delays in the video information transmission. Therefore, in order to eliminate the maximum redundancy amount in the formation of the video sequence, 3 types of frames are used: I, P and B which form a frame group. Therefore, the possibility of upgrading coding methods for P-frames is considered on preliminary blocks' type identification with the subsequent formation of block code structures. As the correlation coefficient between adjacent frames increases, the compression ratio of the differential-represented frame's binary mask increases. A mechanism for processing predicted frames in the technology of compression of transformed images in computer systems and special purpose networks has been created. It based on the using of filter masks and the definition of complexity structural indicators of video fragments. It allows us to increase the efficiency of contours detection, namely, the accuracy of the allocation and localization of the semantic component up to 30% with an insignificant increase in the total processing time (no more than 5%).
Multidisziplinäre Untersuchung einer australischen Mumie aus den Beständen der Berliner Gesellschaft für Anthropologie, Ethnologie und Urgeschichte (BGAEU)
Authors: Teẞmann Barbara , Winkelmann Andreas , Wurst Christina , Maixner Frank , Zink Albert
Published: March 2021

Herrmann Klaatsch eignete sich 1905 unter dubiosen Umständen eine australische Räuchermumie an und übergab sie der Berliner Gesellschaft für Anthropologie, Ethnologie und Urgeschichte (BGAEU). Aus historischen Quellen ist bekannt, dass es sich hierbei um die sterblichen Überreste von „Ng:tja“ handelt, auch unter dem Namen Barry Clarke bekannt. Der Herkunftsort der Mumie befindet sich im nordöstlichen Queensland. 1914 übergab die BGAEU diese Mumie dann als Dauerleihgabe an das Ethnologische Museum Berlin, wo sie bis zur Restitution an die Nachfahren von Ng:tja im Jahr 2017 blieb. Mit den Nachfahren von Ng:tja wurde eine Vereinbarung über die anthropologische Untersuchung und Beprobung getroffen. Die genetischen Analysen haben ergeben, dass die Mumie aus dem australischen Raum kommt und zur indigenen Bevölkerung Australiens gehört. Die mitochondriale DNA weist zudem auf das Herkunftsgebiet Queensland hin und das Geschlecht konnte, in Übereinstimmung mit der anthropologischen Untersuchung, genetisch als männlich bestimmt werden.
Humboldt und die Folgen. „Brasilianischer“ Federschmuck in der Königlichen Kunstkammer zu Berlin (1800–1856)
Authors: Schlothauer Andreas
Published: March 2021

Die gemeinsame Reise eines Franzosen und eines Deutschen hatte in den ersten Jahrzehnten des 19. Jahrhunderts eine wesentliche Folge: Das öffentliche Interesse und die Forschung deutscher Naturwissenschaftler richtete sich verstärkt auf das südamerikanische Tiefland. Dadurch gelangten nicht nur naturwissenschaftliche Sammlungen nach Berlin, sondern auch Ethnografika aus Brasilien, Kolumbien, Venezuela und den Guayanas in die Königliche Kunstkammer, die heute zu den ältesten und bedeutendsten Beständen des Ethnologischen Museums zählen. Im Jahr 1856 waren es etwa 370 Inventarnummern. Davon sind 94 Federschmuck (ca. 25 %), der sieben Sammlungen zugeordnet ist: »Schomburgk« (35), »Hoffmannsegg/Sieber« (33), »Dr. Casper« bzw. »Kasper« (14), »Nagler« (3), »Olfers/Sello« (1), »Moritz« (1),»Schnell [?]« (1) sowie »Unbekannt/Unklar« (7).
Auch wenn die umfangreicheren, besser dokumentierten und in Teilen wissenschaftlich bearbeiteten BrasilienSammlungen der ersten Hälfte des 19. Jahrhunderts in München (Martius, Spix), in Wien (Natterer, Pohl) oder in St. Petersburg (Langsdorf) berühmter sein mögen als die Berliner Sammlung, so enthält diese doch einige interessante Stücke, deren Seltenheit bisher nicht erkannt und gewürdigt ist.
Die systematische Untersuchung der Objekte zeigt, dass bis heute knapp 40% der Herkunfts- und Objektangaben bzw. Sammlerzuordnungen unscharf oder falsch sind. Die Ursache von Verwechslungen zwischen den Sammlungen »Hoffmannsegg/Sieber« und »Olfers/Sello« liegt in der mangelhaften Eingangsdokumentation der 1810er- und 1820erJahre. Der Vortrag präsentiert Vorschläge zur regionalen Neubestimmung, analysiert das Material und benennt Vergleichsstücke in anderen Museen:
• Von welchen Ethnien bzw. aus welchen Regionen sind die Objekte?
• Wer waren die Sammler und wann wurden die Stücke gesammelt?
• Aus welchem Material bestehen sie und wie wurden sie verwendet?
• Wie selten sind diese Stücke im Vergleich mit dem Gesamtbestand in anderen Museen?
Selection the optimal dose of application associated vaccine against rota-, coronavirus infection and colibacillosis in calves
Authors: Yaromchyk Y. P. , Krasochko P. А. , Krasochko P. P. , Eremets V.M. , Skotnikova T.A.
Published: March 2021

The main rules for choosing the means of specific prophylactic against colibacillosis (escherichiosis) in cattle is the need to match the antigenic spectrum of the vaccine strains with epizootic strains isolated by diagnostic veteri-nary institutions from pathological material taken from dead calves. Only in this case one should expect high results of the preventive efficacy of the applied vac-cines. The design of vaccines based on pathogenicity factors of bacterias is the most promising direction in the development of new bioproducts of specific pre-vention of infectious diseases of farm animals. Researchs in the areas to choice the optimal doses and ratios of monocompo-nents, determining the optimal immunizing dose, and choosing a adjuvant is an im-portant part of research work on the creation of vaccines. We completed work to establish the optimal dose when using the associated vaccine against rota-, coronavirus infection and colibacillosis of cattle by vaccinat-ing cows in different doses of the test vaccine. Subsequently, serological studies of the blood of animals were carried out, according to the results of which the indica-tors of the best immune response were determined by comparing the established levels of biosynthesis of specific antibodies from animals of the experimental and control groups. A number of indicators of possible reactogenicity of the tested vac-cine were also studied. When conducting studies of blood serum of cows, the indi-rect hemagglutination reaction and agglutination reaction were performed. Serolog-ical blood tests carried out were accompanied by the necessary controls to ensure the reliability of the results. According to the results of studies of blood serum of cows in the experimental groups, immunization of cows with an associated vaccine against rota-, coronavirus infection and colibacillosis of cattle in different volumes led to a significant level of antiviral and antibacterial antibodies. The optimum dose for virus antigens with infectious titres from 7,0 lg and 5,5-TCI50/sm3 for vaccinated cows forms 1,5 sm3 for each viral monocomponents. The optimum dose for each vaccine strains E.coli F4, F5, Аtt25, F41 and 987P forms from 1,5-2,5 milliard bacterial cells for each bacterial monocomponents.
The efficiency of using protein hydro-lyzate to stimulate the reproductive function of minks and improve the commercial properties of animal skins
Authors: Albulov A.I. , Frolova M.A. , Grin A.V. , Eliseev A.K. , Abramov A.B.
Published: March 2021

From the point of view of solving the problem of feed supply in fur farming, the use of biologically active additives that normalize the protein balance is of great interest. The hydrolyzate obtained by the technology developed by us from the waste of fur farming is a highly digestible protein, is characterized by a high content of amine nitrogen, and contains all non-replaceable amino acids. The introduction of hydrolyzate from sable muscle tissue into the main diet of minks allowed to reduce by 1.3 times the number of missing female minks, to increase the yield of mink puppies per main female, increase the viability of the offspring. The efficiency of feeding the protein hydrolyzate in the diet of caged minks was assessed by the commercial properties of the skins. The most important indicators are the thickness of the skin and the ratio of its layers, on which the duration of processing of raw materials during production operations and indicators of the physical and mechanical properties of the skins depend. Analysis of the obtained measurements made it possible to conclude that feeding with protein hydrolyzate led to an increase in the thickness of the skin of various topographic areas of mink skins. The maximum value of the epidermis thickness was observed on the rump part, the minimum - on the spinal region, while the maximum number of guard hairs was noted on the spinal part, the minimum - on the lateral part of the mink skins. Thus, the results obtained indicate the effectiveness of using a protein hydrolyzate to stimulate the reproductive function of minks and improve the commercial properties of animal skins.
The Impact of Menstrual Disorder Towards Female University Students
Authors: Ahmad Kamal Azlan , Ab Rahman Zarizi , Thomas Heldora
Published: March 2021

The purpose of this study is to study whether the menstrual disorder have impact on quality of life among female students which focus on physical and health education students from semester 1 until semester 8 in Uitm Puncak Alam, Selangor. The study was conducted to clarify the types of menstrual disorder among female students. The study also was aimed to identify the symptoms of menstrual disorder experience among female students before and during their menstruation and to determine the effect of menstrual disorder among female students towards their quality of life. Data from 74 respondents were used for the statistical analysis. The data were collected by using non purposive sampling. Questionnaires were used to obtain data for this study and the data for this study were analysed by using Microsoft Excel Software. Results showed that, menstrual disorder give impacts towards female quality of life. Future research should emphasize on other scope of study and more research about menstrual disorder may help organization to increase their performance and knowledge about female and their menstruation. Keywords: menstrual disorder, female students and effects, quality of life
College Acceleration for All? Mapping Racial Gaps in Advanced Placement and Dual Enrollment Participation
Authors: Xu Di , Solanki Sabrina , Fink John
Published: March 2021

This article documents the patterns of White-Black and White-Hispanic enrollment gaps in Advanced Placement (AP) and Dual Enrollment (DE) programs across thousands of school districts in the United States by merging several data sources. We show that the vast majority of districts have racial enrollment gaps in both programs, with wider gaps in AP than DE. Results from fractional regression models indicate that geographic variations in these gaps can be explained by both local and state factors. We also find that district-level resources and state policies that provide greater access to AP and DE are also associated with wider racial enrollment gaps, implying that greater resources may engender racial disparity without adequate efforts to provide equitable access and support for minority students.
Thermo-mechanical and adhesion properties of polymers and composites as affected by nature of epoxy isocyanate binders
Authors:   Institute of Technical Chemistry, Branch of Perm Federal Research Center, RAS, Ural Branch, Fedoseev M. S. , Derzhavinskaya L. F. ,   Institute of Technical Chemistry, Branch of Perm Federal Research Center, RAS, Ural Branch, Scherban M. G. ,   Perm State National Research University
Published: March 2021

The differential scanning calorimetry method was used to study kinetics of cyclo-polymerization of epoxy resins with di- and polyisocyanates of different nature. To reduce a temperature interval in which the reaction between epoxy novolac resin and isophoronodiisocyanate progresses, efficient catalysts — the complexes of zinc dichloride with imidazole and tributylphosphate — were proposed. Highly heat-resistant polymers and composites were obtained due to cyclic oxazolidones and isocyanurates contained in their structure. Adhesion capacity of epoxy isocyanate compositions to aluminium and its alloys was studied as well.
ANALYSIS OF COMPOSITION AND STRUCTURE OF MAMMOTH TUSK THE MAMMUTHUS PRIMIGENIUS BY THERMOGRAMMETRIC AND X-RAY SPECTROSCOPY
Authors:   Federal Research Centre “The Yakut Scientific Centre of SB RAS”, Solovev T.M. , Petukhova E.S. ,   Federal Research Centre “The Yakut Scientific Centre of SB RAS”, Botvin G.V. ,   Federal Research Centre “The Yakut Scientific Centre of SB RAS”, Isakova T.A. ,   Federal Research Centre “The Yakut Scientific Centre of SB RAS”, Pavlova V.V. ,   Federal Research Centre “The Yakut Scientific Centre of SB RAS”
Published: March 2021

The article represents the results of the research of the chemical composition of mammoth tusk Mammuthus Primigenius and its phase transformation using thermogrammetric (TGA) and X-ray spectroscopy analysis (XRD). The elemental analysis of mammoth tusk showed, that besides basic elements in the structure of hydroxyapatite (HAP) contains magnesium ions, i.e. hydroxyapatite in the studied samples is presented in magnesium-substituted form. The thermal decomposition of mammoth tusk components occurs in wide temperature range with a change in the structure of the mineral part from hydroxyapatite to whitlockite. It was found that this process is caused by the presence of magnesium ions.
BATF3 is differentially expressed in the lymph nodes of patients with metastatic breast cancer.
Authors: Mamoor Shahan
Published: March 2021

Metastasis to the brain is a clinical problem in patients with breast cancer (1-3). Between the breast and the brain reside the secondary lymphoid organ, the lymph nodes. We mined published microarray data (4, 5) to compare primary and metastatic tumor transcriptomes for the discovery of genes associated with metastasis to the lymph nodes in humans with metastatic breast cancer. We found that basic leucine zipper ATF-like transcription factor 3, BATF3, was among the genes whose expression was most different in the lymph node metastases of patients with metastatic breast cancer as compared to primary tumors of the breast. BATF3 mRNA was present at increased quantities in lymph node metastases as compared to primary tumors of the breast. Importantly, expression of BATF3 in primary tumors of the breast was correlated with patient post-progression survival, in lymph node positive patients but not in lymph node negative patients. Modulation of BATF3 expression may be relevant to the biology by which tumor cells metastasize from the breast to the lymph nodes and the brain in humans with metastatic breast cancer.
The Linda who skipped the logic classes
Authors: Schlagbaum Rivka , Szweizer Moshe
Published: March 2021

The letter points to a logical mistake found in “The conjunction fallacy in probability judgment” published by Tversky and Kahneman. Currently, at least 5,100 research papers reference this work, and an entire field of associated studies has been created based on the paper. These works assume the correctness of the original publication and reproduce the error without due critical analysis.
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Authors: Keleynikov Mor , Benatov Joy , Cohen Noga
Published: March 2021

The coronavirus (COVID-19) outbreak has been declared a global pandemic. The consequences of this pandemic, among them changes in routine, quarantine, school closures and more, place children with special needs and their families at risk of severe emotional distress. Therefore, the present study used an online survey to measure stress, anxiety and depression levels as well as concerns related to the COVID-19 outbreak among 94 parents of children with special needs (mean age = 41.6 years, SD = 6.59; 83% female) and 79 parents raising a typically developing child (mean age = 40.85 years, SD = 7.40; 85% female). We also examined whether the use of adaptive and maladaptive emotion regulation (ER) strategies (reappraisal and suppression, respectively) predicts emotional distress among the two parent groups. The results indicate that compared to parents of TD children, parents of children with special needs reported more concerns about the COVID19 outbreak and more symptoms of emotional distress (depression, anxiety and stress). The use of adaptive and maladaptive emotion regulation strategies moderated the association between concerns arising from the COVID-19 outbreak and emotional distress. In addition, the habitual use of emotion regulation strategies predicted distress only among parents of children with special needs but not among parents of TD children. These findings highlight the role played by emotion regulation in maintaining well-being at times of crisis among vulnerable populations, such as families raising children with special needs.
Party Systems in Muslim Societies
Authors: Nugent Elizabeth
Published: March 2021

Are party systems in Muslim majority societies different from those in non-Muslim majority societies? If so, how – and more importantly, why? Cross-national time-series data demonstrate that party systems in Muslim majority countries are consistently less competitive, less open, and less institutionalized than party systems in non-Muslim majority countries. This chapter synthesizes existing theories of party system formation to argue that the traits of party systems in Muslim majority countries are better explained by both shared experiences and systematic variation in historical developments related to colonialism and the path dependence of institutions, rather than by the political institutions prescribed by Islamic culture. The chapter concludes by outlining a series of unanswered questions about the differences between party systems in Muslim and non-Muslim majority societies.
Anti-egalitarians perceive corporations as less agentic and judge their misconduct less harshly
Authors: Lees Jeffrey Martin , Tang Simone , Sidanius Jim
Published: March 2021

Although people’s ideological beliefs are key to understanding how they make moral judgments, existing research has been silent on how such ideological beliefs drive their psychological perceptions of corporations and their responses to corporate misconduct. Across four studies, we examine how ideological beliefs about social hierarchy drive perceptions of corporations and their misconduct. We find that those who hold anti-egalitarian attitudes (those high in social dominance orientation) are less likely to perceive corporations as possessing an agentic mind (Studies 1a and 1b), and judge corporate misconduct as less immoral (Studies 2 and 3), even after accounting for political orientation. These results highlight the importance of ideology’s role on organization mind perception and subsequent moral judgments of corporate misconduct.
The working week in the long nineteenth century: Evidence from the timings of political events in Britain
Authors: Tiratelli Matteo
Published: March 2021

Debates about patterns of time-use in eighteenth and nineteenth century Britain go back to the seminal work of E.P. Thompson in the 1960s. But the lack of systematic evidence means that many of these questions remain unresolved. In an attempt to advance those debates, this essay uses three catalogues of political events to reconstruct the working week in Britain over the long nineteenth century. Three findings emerge. First, observance of Saint Monday appears to have been widespread in the early nineteenth century before declining slowly in the mid-1800s, a process which happened faster in factory towns than elsewhere. These findings support the orthodox narrative about Saint Monday against its recent challengers (in particular Hans-Joachim Voth). Second, I find that political organisers in the early nineteenth century were reluctant to profane the Sabbath by arranging public meetings on Sundays, but that this came to an end during the heyday of Chartism. Third, these catalogues also provide some, more speculative, evidence that the working day and the working week became more ordered as the nineteenth century wore on.
Survey of Institutional Teaching Approaches to Clinical-Year Clinical Pathology Instruction and Comparison with Prior Survey Results
Authors: Johns Jennifer L. , Christopher Mary M.
Published: March 2021

Teaching approaches to veterinary clinical pathology in the final (clinical) year of veterinary school are often different than those for other specialties. Anecdotally, many schools teach these rotations separately from the routine diagnostic service, but minimal published data are available on this topic or on approaches to teaching and assessment in these rotations. An online survey of 69 veterinary institutions around the world was conducted in 2019. A total of 30 completed surveys were received from 10 countries; 22 completed responses were from North American institutions (73.3%). Survey question categories included information on basic rotations, including microscopy format, personnel involved in instruction, and assessment methods; information on advanced rotations; and challenges and successes with clinical pathology instruction. Data were analyzed and, when appropriate, compared with results from a similar survey conducted in 1997. Formats and content varied greatly among institutions. Several shifts in teaching strategies and rotation format over time were found since the 1997 survey, including increased use of projection microscopy and decreased use of multiheaded microscopy in 2019. More teaching by medical technologists and residents, less teaching by faculty, and a significant increase in the number of students per rotation were seen in 2019 compared with 1997. Several free-text comments referred to challenges related to increasing class size. These data and the comparison with the prior survey highlight common challenges and potential solutions to final-year clinical pathology instruction. Creation of specific, measurable objectives for clinical pathology competence may aid future development and refinement of clinical pathology teaching.
The Bakeries of Volubilis: Process, Space, and Interconnectivity
Authors: Benton Jared
Published: March 2021

During the 2017 field season, our team cleaned and documented six of the bakeries in Volubilis. The primary goal of this fieldwork was to provide the first detailed study of the interior operations of the city’s commercial bakeries, documenting the various technologies and attributes within the workshops. Framed in terms of operational sequences, the processes comprising the production of bread are associated with the various spaces within workshops and the relationships between production and the built environs around each workshop. The morphologies of the different technologies are also detailed to begin exploring cross-craft interactions as part of future work at the site.
Risk Factors of Early Dental Implant Failure: A Retrospective Study
Authors: Thi Khanh Ha Nguyen , Thi Khanh Ha Nguyen , Duc Minh Nguyen , Xuan Thang Tran
Published: March 2021

Objective: This retrospective study aimed to assess the risk factors associated with early implant failure using a multivariate logistic regressive model and generalized evaluating equations (GEE) analysis. A total of 892 patients who received 1931 dental implants within the period from 2015 to 2018 at Odonto-Maxillo-Facial Hospital, Ho Chi Minh City, Vietnam were included in this study. Several factors as age, gender, implant placement site, implant length and diameter, sinus lifting technique, the number of implants per patient, and implant brands were recorded. GEE analysis results showed that the implant-based failure rates were 6.1% after an observation period from 3 months to 3 years. Among 118 failed implants, 108 implants were lost before or at the abutment connection stage (91.5%). Male, maxilla implant placement and implant brands were identified as the risk factors for early implant loss. Implant brands which have significantly less early failure rates are Ritter, Nobel, MIS, Osstem, Neo.
Hypnosis: An Altered State of Consciousness
Authors: Basu Sayani
Published: March 2021

Hypnosis, an induced trance state, poses significant effects on the brain and this phenomenon is considered a viable, cost-effective and safe therapeutic method that boosts the quality of life.