bluuebunny/crossref_metadata_2025 huggingface dataset:
Injection-type Denture Base Materials Surface Modification after Vapor Plasma Deposition
Authors: Farcasiu Titus Alexandru , Tarlungeanu Daniela Ioana , Ciavoi Gabriela , Todor Liana , Dina Magdalena Natalia , Andrei Oana Cella , Farcasiu Catalina
Published: July 2021

The purpose of this study was to investigate changes of superficial topography and wettability of two injection-type denture base materials following low pressure plasma treatment. Samples of denture base materials (Polyan and Biodentaplast) were fabricate using dedicated technology and were exposed to plasma treatment. Resin surface topography and rugosity were evaluated using SEM and AFM, while wettability was determined through contact angle measurements. Artificial saliva was the testing liquid. Initial contact angles for the two materials are close (Biodentaplast-37.60�, Polyan-36.75�). Plasma treatment halves the values of the contact angle. 30-days measurement reveals a reduced bounce-back effect (Biodentaplast-20.68�, Polyan-20.11�). Surface topography modified differently for the two materials. Rugosity increased significantly for both materials (p[0.05). Surface rugosity values pre- and post-plasma treatment respect the biological threshold of fungal adhesion. Plasma exposure increased injection-type denture base materials wettability with artificial saliva and surface roughness. Injection-type denture base materials and artificial saliva can enhance prosthetic experience of xerostomic patients.
Comparative Study on the Frequency and Wear of Thermoplastic Polymeric Materials Based on PTFE
Authors: Petre Ivona Camelia , Stoian Elena Valentina , Enescu Maria Cristiana , Rusanescu Carmen Otilia
Published: July 2021

The widespread use of thermoplastic polymeric materials in various industrial fields has shown considerable interest in understanding the frictional and wear behavior. Among these polymers, polytetrafluoroethylene, also called PTFE, is a high-performance plastic that offers high chemical and thermal resistance and low friction. Additives such as fiberglass, carbon and graphite fillers are added to PTFE to significantly increase thermal conductivity, stiffness and self-lubricating properties. The materials subjected to the experimental analysis were pure PTFE, PTFE + 15% fiberglass, PTFE + carbon-graphite which slipped, under conditions of dry friction, on a sample of non-alloy steel construction SR EN 10025 from 1994. The tests were performed on a pin-on-disc tribometer. The effect of loading and sliding speed on the tribological properties of the polymer / steel combination under dry slip conditions was investigated and the specific wear rate for the experimental conditions was evaluated. The tests were performed at loads of the pin of Fn1=1N, Fn2=3N, Fn3=5N and Fn4=10N and sliding speeds of 1=1m/s, 2=3m/s. The results obtained indicated that the coefficient of friction decreases with increasing load. The wear rate for the analyzed materials was between 10-13...10-15 m2/N, the fiberglass reinforced PTFE material having the lowest wear rate. The present paper, through a comparative analysis of the friction and wear behavior, highlights the effects that the ingredients introduced in the basic material have, under the action of the exploitation factors (loading, sliding speed).
Physical Properties of Biodegradable Poly(L-lactide) Induced by N, N -Bis(Benzoyl) 1, 3-Cyclohexanedicarboxylic Acid Dihydrazide as Crystallinity Additive
Authors: Zhao Li-Sha , Deng Ting , Qiao Jun , Cai Yan-Hua
Published: July 2021

This work is aimed at synthesizing an organic compound N, N -bis(benzoyl) 1,3-cyclohexane-dicarboxylic acid dihydrazide (CABH) to focus on its effect on the non-isothermal crystallization of poly(L-lactide) (PLLA), meanwhile the melting behavior, thermal decomposition process and optical property of PLLA/CABH samples in different CABH concentrations were also investigated. It was found that CABH acted as efficient heterogeneous nucleating agent for inducing PLLA�s crystallization through comparative analysis of melt-crystallization process of the virgin PLLA with PLLA/CABH samples, and a high amount of CABH played a much more significant role in promoting PLLA�s crystallization. Additionally, the melt-crystallization processes also showed that both the cooling rate and the final melting temperature affected the crystallization behavior of PLLA, an increase of cooling rate could weaken the crystallization ability of PLLA/CABH samples, and the final melting temperature of 180�C made PLLA/CABH exhibit the best crystallization ability. For the cold-crystallization process, the cold-crystallization peak became flatter and shifted toward the lower temperature with increasing of CABH concentration, but an increase of heating rate could prevent the cold-crystallization peak from moving to low temperature because of the thermal inertia. The melting behaviors of PLLA/CABH depended on the previous crystallization and heating rate in heating, and the difference in melting behavior of PLLA/CABH samples effectively reflected the nucleation role of CABH, as well as the double melting peaks behavior of PLLA/CABH was thought to due to the melting-recrystallization. The introduction of CABH led to a drop in light transmittance, moreover, this negative effect were more obvious with an increase of CABH loading. In contrast, the fluidity of PLLA was significantly enhanced due to the existence of CABH.
In Vitro Study on Biodegradation of Absorbable Suture Materials Used for Surgical Applications
Authors: Antoniac Iulian , Antoniac Aurora , Gheorghita Daniela , Gradinaru Sebastian
Published: July 2021

Abstract: The presented experimental research aims to compare the degradation degree of five different types of surgical sutures used in clinical practice and to discuss the influence of local pH on the degradation of a suture material. The surgical sutures were tested in terms of stability and hydrolytic biodegradation in Phosphate Buffer Saline (PBS) solution varying the pH and the immersion time of the samples in the liquid medium. The surface properties, structural characteristics and the effects of hydrolytic biodegradation on the mechanical properties were studied using Fourier Transform Infrared Spectroscopy (FT-IR), Scanning Electron Microscopy (SEM), Degradation degree and Tensile Strength tests, respectively.
Determining the Optimal Printing Conditions for the Production of a Fertigation Pump Prototype with FDM Technology
Authors: Chirita Alexandru-Polifron , Sovaiala Gheorghe , Barbu Valentin , Blejan Marian , Pavel Ioan
Published: July 2021

The article presents the optimization of a production process with the help of FDM technology of a fertigation pump prototype that does not require other energy source than that given by the flow and pressure of water for irrigation. In the research presented in this article specimens of PETG material are tested in terms of mechanical properties by using a tensile test equipment. The results of these tests are used to dimension and simulate with finite element the component elements of the pump.
KOMPOSISI HASIL TANGKAPAN PERIKANAN PAYANG DAN BAGAN TANCAP SEBELUM REKLAMASI TELUK JAKARTA (GIANT SEA WALL)
Authors: Nugraha Budi , Kamaluddin Kasim , Sri Turni Hartati
Published: July 2021

Payang merupakan alat tangkap dengan laju tangkap relatif tinggi di Teluk Jakarta, sedangkan bagan tancap dikenal kurang selektif karena hasil tangkapannya didominasi oleh ikan berukuran kecil baik jenis pelagis maupun demersal. Penelitian ini dilaksanakan dengan metode fishing experiment pada payang dan bagan tancap. Hasil penelitian menunjukkan bahwa hasil tangkapan payang dan bagan tancap didominasi oleh jenis ikan demersal namun proporsi tangkapannya tidak jauh berbeda dengan jenis ikan pelagis. Komposisi ikan hasil tangkapan payang pada Agustus dan Oktober didominasi oleh jenis ikan pelagis, sedangkan pada bulan Desember didominasi oleh jenis ikan demersal. Nilai laju tangkap payang untuk jenis ikan pelagis ditemukan tinggi pada Agustus dan Oktober disebabkan oleh dominasi ikan cekong (Sardinella lemuru) dalam jumlah besar. Komposisi ikan hasil tangkapan bagan tancap pada Mei didominasi oleh jenis ikan demersal, sedangkan pada Oktober didominasi oleh jenis ikan pelagis. Daerah penangkapan payang meliputi perairan Pulau Damar, Pulau Bendera, Muara Pecah, Muara Angke, Pulau Onrust, Pulau Putri, Kronjo, sedangkan daerah penangkapan bagan tancap terkonsentrasi di sebelah barat perairan Teluk Jakarta, sekitar Pulau Kayangan, Pulau Bidadari dan Pulau Onrust.

 

ABSTRACT

Payang, a mini danish seine, is an artisanal fishing gear that has high catchability rate. Like payang, another dominant fishing gear in Jakarta Bay, the lift net, is also known as unselective fishing gear since small fish dominate its catch. This research uses the fishing experiment method with payang and lift net to figure out the gears' catch composition and catch rate. The result shows both fishing gears predominately caught the demersal fish group, but its proportion does not much from the pelagic group. During August and October, the catch composition of payang was dominated by pelagic fish, while demersal fish was caught mostly in December. The high catch rate for pelagic fish was recorded in August and October since cekong fish (Sardinella lemuru) dominated the cath. The catch composition of lift net was dominated by demersal fish during May, while pelagic fish were mostly captured in October. Payang’s fishing ground includes Pulau Damar waters, Pulau Bendera, Muara Pecah, Muara Angke, Pulau Onrust, Pulau Putri, and Kronjo, while the lift net dominates the western part of part of Jakarta Bay including Pulau Kayangan, Pulau Bidadari, and Pulau Onrust.
Assessment of Knowledge, Attitude and Practices Regarding Breastfeeding among Mothers Having Children Below 1 Year
Authors: Ramandeep Kaur  , Manjit Kaur  , Jyoti
Published: July 2021

A study to assess the knowledge, attitude and practice regarding breastfeeding among the mothers having children below 1 year. The objectives of the study are to assess the level of knowledge, attitude and practices regarding breastfeeding in mothers having children 1 year, to find out the relationship between knowledge attitude and practices with selected demographic data/variables and to determine correlation between knowledge, attitude and practices. Quantitative research approach and descriptive research design were used. Convenient sampling technique was used to select the 60 subjects. Permission of data collection was taken from head of the department of paediatrics, GMCH Sec-32 Chandigarh. The data was analyzed by using descriptive and inferential statistics. Results of the studies were presented in the form of figures and tables. The study findings revealed that 83.33% mothers had average knowledge regarding breastfeeding, 13.3% mothers had good knowledge and 3.3% mothers had poor knowledge. The study also shows that 88.3 % mothers had positive attitude and 11.7% mothers had negative attitude regarding breastfeeding. The practices were adequate in 91.7% mothers and 8.3% had inadequate practices of breastfeeding. Among all socio-demographic variables, only occupation and parity has significant relationship with attitude score. Only type of family has significant relationship with practice score. The findings revealed non-significant correlation (r=0.058, p=0.636) between knowledge and attitude, statistically significant positive correlation (r=0.290, p=0.038) between knowledge and practices, non-significant correlation (r=0.110, p=0.396) between attitude and practices. This project was carried out by students of final year of B.Sc.(N) Ashish, Ashu, Balraj, Dency, Gaganjot, Harsimran at GMCH-32.
Differentiation of South African coastal rock pool Ochthebius is associated with major ocean currents (Coleoptera: Hydraenidae)
Authors: Bilton David T.
Published: July 2021

A number of non-marine coastal invertebrate species have been found to constitute (semi-) cryptic species complexes in recent years. Here it is revealed that rather than a single widespread species, distributed from the Namibian border to the Cape south coast, South African coastal rock pool Ochthebius Leach, 1815 previously referred to Ochthebius capicola (Péringuey, 1892) comprise two distinct taxa. Ochthebius capicola (s. str.) is apparently restricted to the Benguela Ecoregion on the west coast, being replaced by Ochthebius mlamboi sp. nov., in south and east coast localities influenced by the Agulhas Current, including areas of the Eastern Cape province well outside the previous known range of these beetles. The distribution and ecology of the two species is discussed, with reference to biogeographic breaks in southern African coastal taxa, and the emerging view that many ‘widespread’ coastal rock pool Ochthebius may actually be (semi-) cryptic species complexes.
STUDY OF THE TOPIC "CHOOSING A PROFESSION" IN RUSSIAN AS A FOREIGN LANGUAGE CLASSES AT A LAW SCHOOL
Authors: Зорина Виктория Владимировна
Published: July 2021

Статья посвящена актуальной проблеме обучения иностранных слушателей-будущих юристов русскому языку. Представлены варианты заданий по теме «Выбор профессии». Выполнение иностранными слушателями указанных заданий способствует обогащению словарного запаса обучающихся в рамках изучаемой темы, расширению профес-сионального и общеобразовательного кругозора, воспитанию культуры речевого общения.

The article is devoted to the actual problem of teaching Russian to foreign students-future lawyers. The variants of tasks on the topic "Choosing a profession"are presented. The implementation of these tasks by foreign students contributes to the enrichment of the students ' vocabulary within the framework of the topic under study, the expansion of professional and general educational horizons, and the education of a culture of speech communication.
STATE PROGRAMS AS A INSTRUMENT OF STATE PR
Authors: Матросов Иван Александрович
Published: July 2021

Актуальность выбранной темы обусловлена низкими итоговыми показателями реализации целей государственных программ, включая мероприятия, ориентированные на развитие Дальнего Востока, что напрямую отражается на имидже государства.

The relevance of the chosen topic is due to the low final indicators of the implementation of the goals of state programs, including activities focused on the development of the Far East, which directly affects the image of the state.
MODERN PROBLEMS OF INDEPENDENT MEDIA
Authors: Гарипов Арсений Алексеевич , Крашенинников Андрей Евгеньевич
Published: July 2021

В статье рассматривается современное состояние независимых СМИ в России. Также анализируется сложившийся феномен квази-журналистики.

The article examines the current state of independent media in Russia. The current phenomenon of quasi-journalism is also analyzed.
INHERITANCE OF THE PROPERTY OF A MEMBER OF A PEASANT (FARMER) FARM
Authors: Безгодкова Татьяна Алексеевна , Туршук Людмила Дмитриевна
Published: July 2021

В статье рассматриваются проблемы правового регулирования наследования имущества члена крестьянского (фермерского) хозяйства. КФХ может существовать в двух формах: как юридическое лицо и без образования юридического лица. ГК РФ определяет порядок перехода по наследству имущества лишь КФХ без образования юридического лица.

The article deals with the problems of legal regulation of inheritance of property of a member of a peasant (farmer) farm. PFF can exist in two forms: as a legal entity and without the formation of a legal entity. The Civil Code of the Russian Federation defines the procedure for the inheritance of property only in a farm without the formation of a legal entity.
HISTORICAL DOCTRINE OF THE STATE CULTURAL POLICY OF KAZAKHSTAN: FROM THE CONSCIOUS PAST TOWARDS A MEANINGFUL FUTURE
Authors: Кадримбетова Назгуль Нуржановна , Купаева Айсулу Корабековна , Жаксылыкова Жанар Алтынбековна
Published: July 2021

В статье дается обзорный анализ основ государственной культурной политики в рамках сохранения и использования историко-культурного наследия на базе методики геокультурного брендирования. Казахстанский геокультурный бренд - «Великая степь как этнотерриториальный образ степной цивилизации».

The article deals with an overview analysis of the foundations of the state cultural policy in the framework of preserving and using historical and cultural heritage based on the methodology of geo-cultural branding. Kazakhstan's geo-cultural brand is "The Great Steppe as an ethno-territorial image of the steppe civilization".
INFLUENCE OF DECISIONS OF THE EUROPEAN COURT ON HUMAN RIGHTS ON THE CONSTITUTIONAL LAW OF RUSSIA
Authors: Едреев Тамерлан Шайх-Магомедович
Published: July 2021

В статье исследуются постановления Европейского суда по правам человека в качестве источника права в Российской Федерации, раскрывается значение судебной практики Европейского суда по правам человека в системе источников конституционного права России.

The article examines the decisions of the European Court of Human Rights as a source of law in the Russian Federation, reveals the importance of the jurisprudence of the European Court of Human Rights in the system of sources of constitutional law in Russia.
NEW RULES FOR PAYMENT OF SECOND SEND IN RUSSIA
Authors: Едреев Тамерлан Шайх-Магомедович
Published: July 2021

В данной статье анализируется правовая природа выходного пособия, рассматриваются вопросы, связанные с изменением норм ТК РФ о выходном пособии.

This article analyzes the legal nature of severance pay, discusses issues related to changes in the norms of the Labor Code of the Russian Federation on severance pay.
IMPROVING THE EFFICIENCY OF OPERATING AN OIL WELL WITH BOTTOM WATER
Authors: Ишбулатов Ильяс Азаматович
Published: July 2021

При разработке водонефтяных зон наблюдается образование конусов подошвенной воды, что ведет к увеличению обводненности скважинной продукции и снижению коэффициента извлечения нефти (КИН). В качестве одного из методов борьбы с данным явлением возможно применение технологии, описанной в патенте RU 2 730 163 C1. В данной статье представлены результаты моделирования данной технологии в гидроди-намическом симуляторе.

During the development of oil-water zones, the formation of bottom water cones is observed, which leads to an increase in the water cut of the well production and a decrease in the oil recovery factor. As one of the methods to combat this phenomenon, it is possible to use the technology described in patent RU 2 730 163 C1. This article presents the results of modeling this technology in a hydrodynamic simulator.
COSMOLOGICAL SPACE
Authors: Хурамшин Иштимер Шагалиевич
Published: July 2021

Обсуждаются вопросы о некоторых свойствах вещества пространства. Выдвигается предположение, что искривление пространства-времени происходит из - за сгущения ее вещества вокруг космических тел. Кроме этого, очень высокая упругость вещества пространства - времени объясняется свойством её сверхтекучести и сверхпроводимости.

Questions about some properties of the substance of space are discussed. It is suggested that the curvature of space-time is due to the condensation of its matter around cosmic bodies. In addition, the very high elastic rigidity of the matter of space-time is explained by the property of superfluidity and superconductivity.
SECURITY OF DECENTRALIZED FILE STORAGE
Authors: Степанов Виктор Анатольевич , Андреев Николай Дмитриевич
Published: July 2021

В статье приводятся аргументы в пользу небезопасности централизованных облачных хранилищ, а в качестве альтернативы приводится технология децентрализованного хранения данных. Статья раскрывает содержание этих понятий, приводятся механизмы работы децентрализованных хранилищ, а также их преимущества на конкретных примерах: Sia, Storj.

The article provides arguments in favor of the insecurity of centralized cloud storage, and as an alternative, the technology of decentralized data storage is presented. The article reveals the content of these concepts, describes the mechanisms of work of decentralized storages, as well as their advantages on specific examples: Sia, Storj.
PROCEDURE FOR RESPONDING TO AN INFORMATION SECURITY INCIDENT ON A USER'S WORKSTATION IN AN ORGANIZATION
Authors: Степанов Виктор Анатольевич , Кладов Виталий Евгеньевич
Published: July 2021

Статья посвящена процедура реагирования инцидента информационной безопасности на АРМ пользователя в организации. В материале рассматривается подготовка к процедуре, сбор информации для диагностики инцидента, сканирование и удаление обнаруженных вредоносных ПО, выгрузка необходимых данных для дальнейшего расследования инцидента информационной безопасности.

The article is devoted to the procedure for responding to an information security incident on a user's WORKSTATION in an organization. The article discusses the preparation for the procedure, the collection of information for the diagnosis of the incident, the scanning and removal of detected malware, and the unloading of the necessary data for further investigation of the information security incident.
NEURAL NETWORKS ARE A NEW MILESTONE IN THE DEVELOPTMENT OF SCIENCE AND DESIGNE. BRIEF OVERVIEW OR THE PROBLEM
Authors: Орлов Игорь Иванович , Ларских Екатерина Леонидовна
Published: July 2021

В статье рассматривается краткая история развития нового направления в науке и дизайн - программировании под названием «нейронная сеть». Авторами выделены, описаны и проанализированы этапы генезиса развития от вакуумных ламп и перцептронов до компьютерных программ нашего времени, которые позволяют раскрыть более полную картину возможностей нейросетей.

The article considers a brief history of the development of a new direction in science and design programming called the «neural network». These networks are capable not only of receiving and processing the information received, but also of further training and self-development. The authors highlighted, described and analyzed the stages of development genesis from vacuum lamps and perceptrons to computer programs of our time, which allow to reveal a more complete picture of the possibilities opened by neural networks.
FATTY ACID COMPOSITION OF ENDOPHYTIC MICROALGAE LAMINARIOCOLAX AECIDIOIDES, STREBLONEMA CORYMBIFERUM AND STREBLONEMA SP. (ECTOCARPALES, PHAEOPHYCEAE)
Authors: Чадова Оксана Андреевна , Веланский Петр Владимирович
Published: July 2021

Впервые исследован жирнокислотный состав полярных и нейтральных липидов бурых эндофитных микроводорослей Laminariocolax aecidioides, Streblonema corymbiferum и Streblonema sp. Показано, что в состав полярных липидов входят главным образом полиненасыщенные жирные кислоты, такие как 18:3ω-3, 18:4ω-3 и 20:5ω-3. Во фракциях нейтральных липидов всех образцов доминировали насыщенные жирные кислоты 14:0 и 16:0, мононенасыщенная 18:1ω-9 и полиненасыщенная 18:2ω6. Отмечена высокая концентрация 16:1ω-7 в нейтральной фракции Streblonema sp. Во всех липидных фракциях эндофитов, кроме нейтральных липидов S. corymbiferum, обнаружены гидроксилированные жирные кислоты 22:0Δ2-OH и 24:0Δ2-OH.

The fatty acid composition of polar and neutral lipids of brown endophytic microalgae Laminariocolax aecidioides , Streblonema corymbiferum and Streblonema sp. was investigated for the first time. It was shown that the composition of polar lipids of endophytes includes mainly polyunsaturated fatty acids, such as 18:3ω-3, 18:4ω-3 and 20: 5ω-3. Saturated 14:0 and 16:0, monounsaturated 18:1ω-9 and polyunsaturated 18:2ω6 dominated the neutral lipids of all samples. A high concentration of 16:1ω-7 was observed in the neutral fraction of Streblonema sp. Hydroxylated fatty acids 22:0Δ2-OH and 24:0Δ2-OH were found in all lipid fractions, except for neutral lipids of S. corymbiferum .
THE COMPLEX CASE OF PROVIDING MEDICAL CARE TO A PATIENT WITH A PANCREATIC TUMOR IN THE CONTEXT OF COVID-19
Authors: Громова Галина Григорьевна , Шувалова Ольга Ивановна , Верижникова Людмила Николаевна , Гаус Анна Алексеевна , Козловская Ольга Витальевна
Published: July 2021

Представлен клинический случай коморбидной патологии у пациента с оказанием специализированной помощи в многопрофильной медицинской организации города Сургута, первично диагностированного как COVID-инфекция. Описанный клинический случай, требовал междисциплинарного подхода в диагностике и лечении пациента и представляет пример эффективности работы многопрофильной больницы.

A clinical case of comorbid pathology in a patient with specialized care in a multidisciplinary medical organization of the city of Surgut, initially diagnosed as a COVID infection, is presented. The described clinical case required an interdisciplinary approach in the diagnosis and treatment of the patient and is an example of the effectiveness of a multidisciplinary hospital.
CONFLICTS OF NATURE MANAGEMENT IN MURMANSK REGION
Authors: Шайхайдаров Расим Разифович , Елинсон Мария Альбертовна
Published: July 2021

В статье рассматриваются основные конфликты природопользования в Мурманской области. Анализируются источники, определяются объекты этих конфликтов, рассматривается их содержание. В ней также описываются такие важные аспекты конфликтов природопользования, как тип формы, степень сложности, проявление, динамика, длительность развития, интенсивность и характер границ.

The article deals with the main conflicts of nature management in Murmansk region. The sources are analyzed, the objects of these conflicts are determined, and their content is considered. It also describes such important aspects of environmental management conflicts as the type of a form, the degree of complexity, manifestation, dynamics, duration of development, intensity and nature of borders.
POSSIBILITIES OF DEVELOPMENT OF CREATIVE ABILITIES OF MODERN STUDENTS OF SECONDARY VOCATIONAL EDUCATION THROUGH THE IMPLEMENTATION OF PEDAGOGICAL IDEAS A.S. MAKARENKO
Authors: Салихова Карина Римовна
Published: July 2021

Автор статьи рассматривает возможности применения идей А.С. Макаренко в развитии творческих способностей у современных студентов СПО. Описывается опыт работы преподавателей иностранного языка в колледже, успешно реализующих на занятиях эстетическое воспитание через организацию игр, работу с музыкальным материалом, создание эстетически привлекательной среды.

The author of the article examines the possibilities of applying the ideas of A.S. Makarenko in the development of creative abilities among modern students of secondary vocational education. The article describes the experience of foreign language teachers in college, who successfully implement aesthetic education in the classroom through the organization of games, work with musical material, and the creation of an aesthetically attractive environment.
Histopathological Study of Post-Surgical Gallbladder to Establish True Histopathology Proven Chronic Inflammation
Authors: Khattak Tania , Khattak Almas , Kakakhel Susan , Haque Anwar Ul
Published: July 2021

OBJECTIVES:

The aim of this study was to establish true histopathology proven diagnosis of chronic cholecystitis.

METHODOLOGY:

A cross-sectional study was conducted on 51 post-surgical gallbladders was done to assess their histopathological patterns in a single centered tertiary care hospital. The specimens were studied for chronic cholecystitis, fibrosis, hypertrophy and presence of Rokitansky-Aschoff sinuses. Descriptive analysis was done and associations of the histopathological changes with demographic data of patients were analyzed through Chi-squared test.

RESULTS:

Fifty-one post cholecystectomy samples of gallbladder were analyzed for histopathological changes with 82.4% showing chronic cholecystitis, 84.3% fibrosis, 64.7% congestion, and more than 60% mild or moderate hypertrophy. Moreover, 49% of the specimens showed Rokitansky-Aschoff sinuses. All these changes suggest chronic inflammation.

CONCLUSION:

Chronic cholecystitis, fibrosis, and Rokitansky-Aschoff sinuses are the most common histopathological findings in specimens of patients undergone cholecystectomy for cholelithiasis.
P53 Protein Expression in Epithelial Lining of Odontogenic Cysts: An Immunohistochemical Descriptive Case Study
Authors: Sohail Aqib , Amjad Aneela , Zahid Nighat , Chatha Asad Aizaz , Khan Nauman Rauf , Iqbal Aamer , Yusuf Bilal
Published: July 2021

OBJECTIVES:

The current study was conducted to analyze immunohistochemical appearance of P53 protein in odontogenic cysts.

METHODOLOGY:

Thirty paraffin blocks of confirmed case were prepared to investigate the immunohistochemical appearance of P53 protein.

RESULTS:

Sixteen out of thirty odontogenic cysts (53.3%) showed P53, four out of ten dentigerous cyst (40%) had P53, twelve out of fifteen odontogenic keratocysts (80%) expressed P53 while none of the five radicular cysts (0%) showed P53 protein.

CONCLUSION:

Reclassification of OKC as keratocystic odontogenic tumor was supported by the present study and its findings.
ECONOMIC IMPLICATION OF WEEKLY MARKET
PARTICIPATION: A CASE STUDY OF FARMERS CUM SELLERS
IN GARO HILLS OF MEGHALAYA
Authors: Akoijam Sunildro L.S.
Published: July 2021

The purpose of this paper is to examine the economic impacts of the weekly market
participation by farmers cum sellers in their livelihood. Data were collected from
farmers cum sellers who participated in the weekly markets located in Garo Hills region
of Meghalaya state in India. Altogether 530 farmers (5 farmers each from 106 weekly
markets) participated in the interview process through semi structured schedule for
collecting the data. ANOVA and Chi Square test were used to analyse the data. Findings
indicate that farmers participating in the weekly markets by selling their agricultural
products; are able to earn a sustainable income for their livelihood. With their
continuous participation in the weekly markets, their economic status of their family is
also improved.
RELATIONSHIP BETWEEN FRAMING BIAS AND BIG FIVE PERSONALITY
TRAITS OF INDIVIDUAL INVESTERS
Authors: Sachan Abhishek , Chugan Pawan K.
Published: July 2021

Returns depend upon decisions of investors, but investors biases challenge the ability to take rational
decisions. Study of biases and their relationships with personality traits helps to understand how biases
originate, the way in which they possibly effect investors, and which personality types could be more
susceptible to them. There are evidences that biases have relationships with personality traits of investors
and this study focuses on one such relationship between framing bias and personality traits. Given the
qualitative nature of variables under study, the relationship was established by statistically significant
coefficients of logistic regression equation, where bias-variable was dependent and big five personality
traits were independent. The score of personality trait, which had significant relationship, was cross
tabulated with bias variable, the chi square test indicated a statistically significant relationship. The
results lead to conclusion that an investor with higher score of agreeableness has higher probability of
having framing bias. It is also discussed that an agreeable person may demonstrate irrationality discussed
in prospect theory, more as compared to others, as the framing effects were measured using gain and loss
frames. Since the study deals with frames of communication, it indicates towards the effects of
personality traits on communication between portfolio manager and clients. The study contributes for
portfolio managers that an agreeable client may not actually agree for rational decision if the
communication is not in right frame.
Impact of the Conversion of Citrus Plantations to Oil Palm Plantations
Authors: Sukphing Chinthea , Sehunae Sueoy
Published: July 2021

This article discussed about the conversion of agricultural land into other uses is one of the occurrences that has occurred fairly often in recent years. The method utilized with the purposive sampling , including but not limited to certain criteria that have been established. The informants that participated in this research were ten (10) individuals who were chosen based on a variety of factors. The kind of data that was utilized was qualitative data of a certain kind (descriptive). The result of this research is the factors that influence land use change: I external factors, which include economics and demographics, which cause the conversion of community citrus plantations to oil palm plantations under the pretext of abundant yields and income, in order to meet the daily needs of the community; (ii) internal factors, where farmers are greatly aided by the presence of this type of palm tree, due to its high productivity; and (iii) internal factors, which cause the conversion of community citrus plantations to oil palm plant Economically, the conversion of citrus farms to oil palm plantations has had a positive effect since the revenue from oil palm farming is higher than that from citrus farming.
CEE LABOUR MARKETS – HOMOGENEITY OR DIVERSITY?
Authors: Rollnik-Sadowska Ewa , Jarocka Marta
Published: July 2021

The aim of the article is to assess real changes taking place on CEE labour markets over the last fifteen years, taking into account as the initial point of analysis – 2004, i.e. the moment of extension of the EU by the first CEE countries and as a final point of analysis – 2019. The research was conducted in two stages. The authors made comparisons with the use of the TOPSIS method, which allowed for creating rankings of CEE countries in terms of labour market situation in the analysed years. The second stage of the study involved the analysis of relations between employment and GDP by an estimation of the multiple regression model. The conducted analysis proves that CEE countries are diversified when it comes to the labour market situation. These countries are also characterized by significant dynamics of changes in the labour market.
SUSTAINABLE DEVELOPMENT IN EDUCATION – AUTOMATING CURRICULUM ASSESSMENT
Authors: Vințe Claudiu , Smeureanu Ion , Dârdală Marian , Reveiu Adriana
Published: July 2021

The perpetual need for developing a sustainable economic environment places the education policies at the foundation of social adaptability. Creating and maintaining curriculum content that meets the demands of a continuously changing society, and the challenges that such a rapid evolution put on the labour market, is one of the top priorities for any education system and institution involved in education at any level. This paper proposes a cognitive computing solution for assessing, in a programmatic manner, large corpora of curriculum content created by teachers from lower secondary education environment for Informatics instruction in Romanian schools. The result of this initiative at the national level is corpora of curricular content that must be evaluated to verify the degree to which the material meets the requirements of the national curriculum. We addressed this crucial yet tedious process by designing and implementing a solution for automating curriculum assessment through cognitive computing. The paper outlines a sustainable framework to evaluate curriculum content in an automated fashion, and for providing critical feedback timely to both content creators, and to policy makers responsible for creating economically viable and future adaptable education strategies.
Unlocking the Origins of Ultracool Dwarf Radio Emission
Authors: Hughes A. G. , Boley A. C. , Osten R. A. , White J. A. , Leacock M.
Published: July 2021

Empirical trends in stellar X-ray and radio luminosities suggest that low-mass ultracool dwarfs (UCDs) should not produce significant radio emission. Defying these expectations, strong nonthermal emission has been observed in a few UCDs in the 1–10 GHz range, with a variable component often attributed to global aurorae and a steady component attributed to other processes, such as gyrosynchrotron emission. While both auroral and gyrosynchrotron emission peak near the critical frequency, only the latter radiation is expected to extend into millimeter wavelengths. We present Atacama Large Millimetre/Submillimeter Array (ALMA) 97.5 GHz and Very Large Array 33 GHz observations of a small survey of 5 UCDs. LP 349-25, LSR J1835+3259, and NLTT 33370 were detected at 97.5 GHz, while LP 423-31 and LP 415-20 resulted in nondetections at 33 GHz. A significant flare was observed in NLTT 33370, which reached a peak flux of 4880 ± 360 μJy, exceeding the quiescent flux by nearly an order of magnitude and lasting 20 s. These ALMA observations show bright 97.5 GHz emission with spectral indices ranging from α = 0.76 to α = −0.29, suggestive of optically thin gyrosynchrotron emission. If such emission traces magnetic reconnection events, then this could have consequences for both UCD magnetic models and the atmospheric stability of planets in orbit around them. Overall, our results provide confirmation that gyrosynchrotron radiation in radio-loud UCDs can remain detectable into the millimeter regime.
RR Lyrae Stars in Stellar Streams with Gaia: The Escapers
Authors: Abbas Mohamad , Grebel Eva K. , Simunovic Mirko
Published: July 2021

We attempt to identify RR Lyrae (RRL) stars in stellar streams that might have escaped from seven globular clusters (GCs) based on proper motions, distances, color–magnitude diagrams, and other properties extracted from the Gaia Early Data Release 3 (EDR3) database. Specifically, we cross-match two large RRL stars catalogs (from Gaia DR2 and Catalina Sky Survey) with each other and with the EDR3 database, and we end up with a sample of ∼150,000 unique RRL stars. We calculate distances to RRL stars using the M

G
–[Fe/H] and M

V
–[Fe/H] absolute magnitude–metallicity relations and adopt [Fe/H] values for the GCs from different spectroscopic studies. We also constrain our search to areas where stellar streams associated with GCs were previously suggested or identified in other studies. We identify 24 RRL stars that might have escaped from the following seven GCs: Palomar 13 (Pal 13), NGC 6341 (M92), NGC 5904 (M5), NGC 5466, NGC 1261, NGC 288, and NGC 1851. We list our findings in Table 2.
The effect of biofloc and clear water at low and high salinity concentration on growth performance and antioxidant response of wild juveniles of Atlantic white shrimp Penaeus setiferus
Authors: Valenzuela-Jiménez Manuel , Aguilera-Rivera Diana , Wasielesky Jr. Wilson , Hernández-López Idelette , Rodríguez-Fuentes Gabriela , Durruty-Lagunes Claudia , Cuzon Gerard , Gaxiola Gabriela
Published: July 2021

The effect of biofloc (BFT) and clear water (CW) at low (ls) and high-water salinity (hs) in wild juveniles of Penaeus setiferus were evaluated. Four treatments were implemented: hsBFT, lsBFT, hsCW, and lsCW. After 45 days, final weight (FW), weight gain (WG), hepatosomatic index (HSI), and survival rate (SR) were evaluated. Antioxidant activity in muscle and hepatopancreas were measured: superoxide dismutase (SOD), catalase (CAT), glutathione-S transferase (GST), lipid peroxidation (LPO), protein oxidation (PO). The FW and SR was low for lsCW (P < 0.05), whereas the WG and HSI was high in hsBFT and lsBFT (P < 0.05). The integrative biomarker response index (IBR) showed differences between muscle (M) and hepatopancreas (HP). Results showed an increase of SOD and CAT measured from HP for lsBFT treatment. For M, CAT and GST were high only in BFT (regardless of the water salinity). LPO determined from M and HP recorded the high values at hs and ls, respectively. The PO determined in HP showed substantial damage in BFT (regardless of the salinity), whereas the same determination from M was only important for lsCW treatment. When the analyses of variance (ANOVA) were performed, SOD, LPO, and PO were significant in response to salinity (P < 0.05). In contrast, for CAT, the higher activity was due to the rearing system and salinity interaction (P < 0.05). Results suggest that BFT could diminish the stress by stimulating the antioxidant system to maintain the redox balance through a higher enzyme activity and decrease damage in the proteins and lipids of the cells.
Partial characterization of digestive proteases in Pacific red snapper Lutjanus peru Nichols & Murphy, 1922 (Perciformes: Lutjanidae)
Authors: Peña-Marín Emyr S. , Ibarra-Castro Leonardo , Martínez-Brown Juan M. , Hernández-López Iris A. , Tovar-Ramírez Dariel , Pérez-Urbiola Juan C. , Morales-García Vicente , Martinez-García Rafael , Camarillo Coop Susana , Martínez-Montaño Emmanuel , Álvarez-González Carlos A.
Published: July 2021

Pacific red snapper (Lutjanus peru) is an important commercial species in Mexico with great aquaculture potential; however, digestive physiology is still unknown. Therefore, the objective of the present work was to characterize the digestive proteases of L. peru juvenile using biochemical and electrophoretic techniques. Results showed a higher acid protease activity than the alkaline proteases, trypsin, chymotrypsin, and leucine aminopeptidase (LAP). The optimum temperature for acid proteases was between 30 to 40°C. Trypsin activity showed two maximum peaks of temperature (30 and 50°C), while alkaline proteases, chymotrypsin, and LAP had optimum temperatures of 50, 50 to 60, and 40°C, respectively. Moreover, the optimum pH of acid proteases was between 2 and 3. Also, alkaline proteases, trypsin, chymotrypsin showed pH optimums at pH 6, 9, and 5, respectively, although LAP showed two optimum pH values at 6 and 9. Acid protease zymogram showed three isoforms, totally inhibited by pepstatin A. Alkaline protease zymogram revealed six bands (125.4, 67.2, 57.9, 48.6, 29.8, and 26.9 kDa), which were inhibited by specific serine-proteases and metalloproteases inhibitors. In conclusion, the main digestion in L. peru depends on stomach proteases, which are characteristic of carnivorous fish, followed by intestinal digestion supported mainly by chymotrypsin.
Occurrence of the bigeye thresher shark, Alopias superciliosus (Lowe, 1841) (Elasmobranchii, Alopiidae) in the southwestern Gulf of Mexico
Authors: Del Moral-Flores Luis Fernando , Pérez-Díaz Jorge , Hernández-Arellano Tao , López-Segovia Eduardo
Published: July 2021

The bigeye thresher shark Alopias supeciliosus is a large epipelagic and mesopelagic species, and it has a wide distribution in the Atlantic. However, its record in the Gulf of Mexico is sporadic. A single adult female of A. superciliosus, measuring 360 cm total length and about weight 165 kg, was caught by artisanal fishers in Salinas Roca Partida, Veracruz, Mexico, on July 14, 2020. This study reports the first occurrence of this species in the southwestern of the Gulf of Mexico, which extends its geographical distribution in Mexico.
Early development of the Peruvian rock seabass Paralabrax humeralis (Teleostei: Serranidae): morphological description of the embryonic and yolk-sac larval stages
Authors: Futagawa Masatoshi , Pizarro Jessica , Bueno German , Díaz Juan Pablo
Published: July 2021

Describe the embryonic development of Paralabrax humeralis (Peruvian rock seabass) and the present morphology of its eggs and yolk-sac larvae using the eggs spawned by P. humeralis broodstock in captivity. The spawning occurred naturally and spontaneously in early November 2018. The egg is pelagic and round, with a diameter of 0.98 ± 0.02 mm, an oil globule, and a diameter of 0.2 ± 0.02 mm. Embryonic development started with meroblastic cleavage, reaching the first cleavage stage at 0.4 h post-fertilization (HPF), and reached 64 cells at 2.2 HPF. Blastula period, 128 cells to 30% epiboly, end at 11.3 HPF. Gastrula period, 50% epiboly to 90% epiboly, end at 19.6 HPF. In the organogenesis period, forming Kupffer’s vesicle appeared at 22.5 HPF, the separation of the caudal fin from the yolk at 30.3 HPF, and the hatching of the first larvae at 47.9 HPF. Water temperature was kept at 17.2 ± 0.2°C. The yolk-sac larvae measured 2.22 ± 0.1 mm with a pigmentation pattern of pinpoint melanophores, all along with the embryo and xanthophores in the cephalic region, trunk, and caudal region, as well as in the oil globule. The larva takes feeds from three days post-hatch-out.
Revision of the genus Attaphila (Blattodea: Blaberoidea), myrmecophiles living in the mushroom gardens of leaf-cutting ants
Authors: Bohn Horst , Nehring Volker , Rodríguez Jonathan G. , Klass Klaus-Dieter
Published: July 2021

The genusAttaphila, comprising minute myrmecophilous cockroaches, is revised, including now six previously known (A. aptera,A. bergi,A. flava,A. fungicola,A. schuppi,A. sexdentis) and three new species (A. multisetosasp. nov.Bohn and Klass,A. paucisetosasp. nov.Bohn and Klass,A. sinuosocarinatasp. nov.Bohn and Klass). All species are described or redescribed and depicted with their main characteristics; determination keys allow the identification of males and females. Especially the male characters allow a distribution to two species-groups with differing host specificity:bergi-group associated withAcromyrmex(and possiblyAmoimyrmex) ants,fungicola-group associated withAttaants; the former appears paraphyletic, the latter monophyletic. The genusAttaphilais characterised emphasising its unique features: (1) insertion of antennae at the bottom of a wide funnel-shaped deepening; (2) antenna with the possibility of a rectangular bending between scapus and pedicellus (associated with a distal excavation of the scapus) and (3) with an unusual shape and low number of antennomeres; (4) femora of legs with a ventral groove allowing a close spacing of femur and tibia during a strong flexion; (5) a complex and unusual shape of the laterosternal shelf area of the female genitalia (lack of shelf, presence of a pair of complicated tubular invaginations); and (6) lateral parts of abdominal tergite T9 of male ending in a pair of ventromesally directed arms, which contact the lateral margins of the subgenital plate. Functional aspects and the possible biological roles of these features are discussed. Older biological data are summarised and new observations are presented. The position ofAttaphilawithin Blattodea is discussed. Like a recent molecular study, the morphology of the male genitalia places the genus in the Blaberoidea. The molecular result ofAttaphilabeing closest to three particular blattellid genera, however, is conflictual from the morphological perspective.
Aphyllorchis yachangensis (Orchidaceae), a new holomycotrophic orchid from China
Authors: Qin Ying , Chen Hailing , Deng Zhenhai , Liu Yan
Published: July 2021

Aphyllorchis yachangensis, a new holomycotrophic orchid from Guangxi, southern China is described and illustrated here. This new species is similar to A. caudata but differs from the latter mainly by the sepals acute at the apex, the hypochile with 2 smaller and semicircular wings, the epichile adaxially smooth, acute, the lateral lobes triangular-ovate and the column clavate.
PARTIAL FLEXOR TENDON LACERATION: A CAUSE OF TRIGGER FINGER
Authors: Elias Louis S , Tountas Chris P , Rayan Ghazi M
Published: July 2021

ABSTRACT: This paper reports four cases of trigger finger that resulted from partial laceration of the flexor tendons. Of the four cases, there were one profundus and three superficialis tendons in three males and one female, ranging from 13 to 36 years of age. They were all treated surgically by excision of the "tag" with full functional recovery.
UNIQUE ASPECTS OF DOWNHILL SKI INJURIES PART 2: DIAGNOSIS AND ACUTE MANAGEMENT OF SPECIFIC INJURIES
Authors: Buck Peter G , Sophocles Aristotle M , Beckenbaugh Robert D
Published: July 2021

ABSTRACT: As in many sports, a wide spectrum of injuries is seen in skiing (Table 1). This includes injuries to the upper and lower extremities as well as miscellaneous injuries and medical problems (frostbite, hypothermia, and high altitude effects). Six relatively unique injuries in skiing will be presented in detail. The discussion will focus on the acute management of these injuries: subluxing peroneal tendons, fibular stress fractures, tibial shaft fractures (spiral, transverse), medical compartment knee injuries, anterior shoulder dislocations with associated greater tuberosity fractures, and gamekeeper's thumb.