bluuebunny/crossref_metadata_2025 huggingface dataset:
Total atrioventricular block in patient with late onset acute inferior myocardial infarction
Authors: Kawilarang Ken Christian , Hermawan I. Kadek H. , Hartono Febryanti
Published: September 2021

TAVB is common complication of acute inferior myocardial infarction (AMI). Total atrioventricular block (TAVB) occurs when none of the impulses are conducted from atrium to ventricles and move independently without coordination. In our case, A 61-year-old woman came to the emergency room (ER) with chief complaint of general weakness and nausea without any other complaints since 4 days before going to ER. She had TAVB which is a complication of undiagnosed AMI due to silent ischemia. She didn't get reperfusion therapy because of patient delay and limited resources. Pharmacological therapy had been given while awaiting implantation of temporary pacemaker (TPM). Two days after insertion, the heart rhythm returned to sinus rhythm, therefore permanent pacemaker implantation was not required. TAVB in AMI usually resolves spontaneously. Therefore, it is important to identify TAVB in AMI, so we can quickly diagnose and promptly treat the patient. Thus, it can reduce mortality and increase the probability of spontaneous resolution of TAVB, so physician practice management (PPM) insertion can be avoided.
A rare case of amoebic liver abscess as an immediate post-COVID-19 complication in an immunocompetent female: our experience from KIMS Secunderabad
Authors: Kulkarni Praveen Kumar , Kumar Vinay , Vaswani Daya , Takalkar Anant A.
Published: September 2021

The coronavirus disease 2019 (COVID-19) is caused by the novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which originated in Wuhan, the capital city of the Hubei Province, China, in late 2019. It was declared a pandemic by the World Health Organization on March 11th, 2020(1). COVID-19 has challenged healthcare systems through its highly infectious nature and case fatality rate. Till date, numerous complications of COVID-19 have been reported including post COVID-19 Lung fibrosis, pulmonary thromboembolism, lung abscess, complications involving other organs apart from respiratory system like Acute coronary syndromes, Takotsubo cardiomyopathy, peripheral thromboembolic events, large vessel strokes, vasculitis. Direct hepatic injury or hepatitis has also been reported. But there is sparsity of data on occurrence of liver abscess as an immediate post COVID 19 complication. Hence, we present this case of a middle-aged immunocompetent female to highlight the importance of considering rare complications in COVID 19 patients.
Histopathological spectrum of vulvar lesions on a remote Indian Island
Authors: Bal Gargade Chitrawati , Hemant Deshpande Archana , Palo Seetu
Published: September 2021

A wide spectrum of normal, benign, premalignant, and malignant lesions may occur on the vulva. Symptoms of vulvar disorders may be non-specific. Empiric treatment of vulvovaginal symptoms is common but usually not helpful. Though the varied clinical presentation and diverse histopathological spectrum of vulvar lesions have amazed Pathologists, only a few studies have been reported in the literature. The present study consists of a histopathological spectrum of vulvar lesions.

1.To evaluate the histopathological spectrum of vulvar lesions. 2. To compare the incidences of non-neoplastic and neoplastic lesions of the vulva.

Present study includes all types of vulvar lesion specimens received in the Department of pathology over a period of four years.  

 All thirty-nine vulvar biopsies received in the Department of Pathology were studied for histomorphologic features. The lesions were categorized as non-neoplastic, neoplastic. The neoplastic ones were further divided into benign, malignant, and premalignant. The age of the women ranged from 15 to 69 years (mean 36.18±12.71) with the maximum number of patients between 30 to 40 years of age. Non neoplastic lesions were more common (22; 56.4%) than the (17; 43.6%) neoplastic lesions. There were 15(38.5%) benign lesions while 2 cases (5.13%) were malignant. Among the non-neoplastic lesions, Bartholin's duct cyst was the most common histopathologic diagnosis (35.9%). The fibroepithelial polyp was the most common benign neoplastic lesion constituting 15.3%.

 In the present study nonneoplastic lesions were more common than neoplastic lesions. Among the neoplastic lesions, benign neoplasms were more frequent than malignant lesions.
Histopathological array of cardiac lesions: An autopsy based study in a tertiary care centre
Authors: Verma Renuka , Singh Sunita , Marwah Nisha , Pawar Richa , Rana Deepshikha
Published: September 2021

Cardiac lesions are responsible for approximately 60-70% of sudden deaths. Histopathological examination of heart on autopsy plays an essential role in determining the cause of death.

The present study was conducted to analyse histopathological spectrum of various cardiac lesions in autopsy specimens.

This retrospective randomized study was conducted in the Department of Pathology, Pt. B. D. Sharma, PGIMS, Rohtak, Haryana. A total of 1152 autopsies were analysed, irrespective of cause of death. Among them heart was included in 1062 autopsies, out of which 62 were autolysed. Hence, 1000 specimen of whole heart were included in our study. A detailed gross and microscopic examination was done and histopathological findings were correlated clinically.

Atherosclerosis was the most common cardiac lesion seen in 610 out of 1000 autopsied heart (61%), followed by ischaemic heart disease in 346 cases (34.6%). 27 cases had pericarditis, 23 cases revealed myocardial hypertrophy, 16 cases showed myocarditis, 11 cases had ventricular haemorrhage, 8 cases revealed changes of electrocution, 7 cases had tuberculosis, 6 cases had calcification of valve and 4 cases had metastasis from carcinoma. One case each of infective endocarditis, rheumatic heart disease and aortitis were also noted. The cause of death was not identified in 304 cases. Left anterior descending artery was most frequently involved vessels (35.02%) followed by left circumflex artery (33.41%) then right coronary artery (31.57%). Out of three major vessels 16.24% had single vessel involvement whereas 32.14% & 51.62% cases had two vessels and three vessels involvement respectively.

Ischemic heart disease with coronary artery atherosclerosis was found to be the leading cause of death with triple vessel disease as the most common pattern of involvement.
Cytomorphological study of peritoneal fluid in suspected cases of malignancy
Authors: Vidyashree V Anchan , Deepak R Kanabur
Published: September 2021

Cytology of body fluid is one of the oldest methods that is widely accepted. Though the pleural fluid cytology is well documented, data on peritoneal fluid cytology is sparse. It has a distinct value in confirming or disapproving malignant lesion. Most of the laboratories use cytospin smears for cytological study. While cytospin smears without doubt is a good method for cytodiagnosis, it can be complemented with cellblock for a more accurate diagnosis. Cellblock is a diagnostic modality which can help in pointing the cause for effusion and also in staging, prognosis and therapy of many malignant conditions.

The aim of this study is to (1) analyse the cytomorphology of peritoneal fluid using cytospin and cellblock technique and (2) to assess the utility of cellblock method in identifying malignant cells in peritoneal effusion and wash samples.

A total of 53 ascitic fluid and peritoneal wash samples that were clinically suspected of malignancy were studied. Each of the samples were processed by cytospin smear and cell block method.

The results were interpreted by descriptive analysis.

Sensitivity, specificity, positive predictive value, negative predictive value and diagnostic accuracy of the cytological test was 96.15%, 100%, 100%, 96.42% and 98.11% respectively. Cellular yield for malignancy was 3.85% more by the cellblock method.

Cellblock can provide an additional information which can aid in increasing the sensitivity of cellblock. It can complement cytospin smears, especially to detect malignant cells in peritoneal fluid. A combined approach of cytospin and cellblock can help in a more accurate diagnosis.
Modeling and Assessment of National Power of Different Countries all over the World
Authors: Makarov Valery
Published: September 2021

The article continues the work on the assessment, monitoring and forecasting of national power integral indicators. National power is the most informative and popular indicator characterizing the total potential of a particular country, which allows comparing the level of its military power and socio-economic development with other countries. Modeling and assessment of the national power indicator is extremely important for adjusting strategic documents related to the country's long-term development, as well as its foreign policy. In many countries, the national security indicator is assessed by a narrow circle of experts or using the average results of surveys conducted with a wider number of respondents. Subjectivity is the disadvantage of this approach. In this paper, the authors provide a scientifically based methodology for modeling and assessing national power. The results of calculating the integral indicators of national power were obtained using the methods of multivariate static analysis. In conclusion we give a forecast of the indicator of national power until 2025 depending on the most likely scenario of world dynamics from our point of view.
Emotional and Aesthetic Labor of Finnish Military Officers
Authors: Kouri Suvi
Published: September 2021

This study analyzes the emotional and aesthetic labor of Finnish military officers. It examines the kinds of valuations officers attach to the notion of an ideal soldier. The meanings that officers give to these ideals are explored within the wider framework of post-Fordist new work. The ideal soldier is traditionally considered to be physically capable and strong, rational, and in control—features culturally coded as masculine. An analysis of 108 military officers’ writings and 12 interviews showed that while the traditional masculine ideal still exists, a vast variety of valuations are related to new work. The notion of the new ideal worker includes attributes, such as empathy, emotional intelligence, and social skills, which are culturally coded as feminine qualities. These feminine valuations may work to female officers’ advantage. However, despite fractures in traditional masculine ideals, there are still some deeply rooted gender stereotypes that work to female officers’ disadvantage.
COAGULATION BALANCE AND PLATELET AGGREGATION INDICATORS IN PATIENTS WITH INFECTION COVID-19
Authors:   Mogilev Regional Clinical Hospital, Marochkov A.V. ,   Vitebsk State Order of Peoples' Friendship Medical University, Lipnitski A.L. ,   Mogilev Regional Clinical Hospital,   Vitebsk State Order of Peoples' Friendship Medical University, Kupreyeva I.A. ,   Mogilev Regional Clinical Hospital, Dazortsava V.U. ,   Mogilev Regional Clinical Hospital
Published: September 2021

Objective. To determine changes in coagulation balance and platelet aggregation in patient during the treatment of COVID-19 infection. Methods. A pilot non-randomized prospective clinical study of coagulation balance and platelet aggregation in patients admitted to the intensive care unit with acute respiratory distress syndrome and the diagnosis of COVID-19 (n=50) was performed. Out of 50 patients, 19 patients died, 31 patients were transferred to the therapeutic department. The study of indicators of coagulation balance and platelet aggregation was carried out once in 1-3 days starting from the patient’s admission to the hospital using coagulation analyzer ACL 10000 (Instrumentation Laboratory, USA) and platelet aggregation analyzer AP 2110 (ZAO “SOLAR”, Republic of Belarus). Results. In 45 (90%) patients with COVID-19, there is a significant increase of von Willebrand factor activity 350 (244.5; 480) %. There were no statistically significant differences in the level of von Willebrand factor activity among the deceased and surviving patients: 450.0 (338.8; 530.5) % in deceased patients and 342.0 (188.8; 480.0) % in survivors. At von Willebrand factor activity level of up to 250%, the mortality rate was 8.3%, at a level of 250-400% - 31.3%, at a level of more than 400% - 59.1%. Significantly above the normal range in most patients were fibrinogen (above normal in 68% of patients, 4.63 (3.49; 5.87) g/L) and D-dimers (above normal in 88% of patients, 0.73 (0,31; 1.4) μg/ml). Antithrombin III was below normal in 56% of patients (82 (67.1; 97.2) %). The degree of platelet aggregation has a strong direct correlation with the von Willebrand factor level: with an ADP inducer 0.3 μg/ml (R=0.71, р=0.003); ADP 0.6 μg/ml (R=0.74, р=0.0001); ADP 1.25 μg/ml (R=0.53, р=0.01). Conclusion. Analysis and evaluation of coagulation balance and platelet aggregation should be an integral part in the treatment of patients with COVID-19 infection. What this paper adds For the first time, the indicators of coagulation balance and platelet aggregation have been assessed in the treatment of COVID-19 infection. It has been found that 90% of patients had the increasedlevels ofvon Willebrand factor(VWF) - 350 (244.5; 480)%. In addition to an increase of von Willebrand factor activity, 56% of patients show a reduction of antithrombin III levels, and 88% and 68% of patients have an increasing D-dimers and fibrinogen, respectively. Analysis and assessment of coagulation balance and platelet aggregation indicators should be integral components of the treatment of patients with COVID-19 infection.
MULTIAXIAL CARBON FABRICS IN THE PRODUCTS OF AVIATION TECHNOLOGY (review)
Authors:   Federal State Unitary Enterprise «All-Russian Scientific Research Institute of Aviation Materials», Sidorina A.I.
Published: September 2021

The article considers the main advantages and disadvantages of application of multiaxial fabrics as reinforcing fillers for composite materials with a polymer matrix, and specifies the most common processing technologies of multiaxial fabrics into a composite material. The paper provides the information about the use of carbon multiaxial fabrics in the manufacture of structures for aircraft products by the example of the production of the Airbus A380 rear bulkhead and of the Airbus A400M upper cargo door. Brief characteristics of the world’s leading manufacturers of carbon fiber multiaxial fabrics for aircraft products are given.
THE DEVELOPMENT OF THE NEW VZhM200 SUPERALLOY AND THE TECHNOLOGY OF ITS PRODUCTION FOR CASTING OF THE ADVANCED ENGINES’ BLADES BY THE DIRECTIONAL CRYSTALLIZATION
Authors:   Federal State Unitary Enterprise «All-Russian Scientific Research Institute of Aviation Materials», Min P.G. , Vadeev V.E. ,   Federal State Unitary Enterprise «All-Russian Scientific Research Institute of Aviation Materials», Kramer V.V. ,   Federal State Unitary Enterprise «All-Russian Scientific Research Institute of Aviation Materials»
Published: September 2021

FSUE «VIAM» has developed a new nickel-based superalloy VZhM200 and its manufacturing technology for casting of turbine blades with directional (pillar-type) structure for advanced turbine engines. The advantages of the VZhM200 alloy over the DS200 Hf alloy are presented in the article. The quality of VZhM200 alloy produced by FSUE «VIAM» meets the DS200 Hf, MAR M200+Hf alloys produced by Cannon-Muskegon Corporation and HOWMET Ltd in chemical composition, content of harmful and non-metal impurities, gases and mechanical properties.
THE DEVELOPMENT OF AUTOMATED LAYING: FROM THE BEGINNING TO OUR DAYS (review) Part 2. Automated Fiber Placement (AFP)
Authors:   Federal State Unitary Enterprise «All-Russian Scientific Research Institute of Aviation Materials», Timoshkov P.N. , Goncharov V.A. ,   Federal State Unitary Enterprise «All-Russian Scientific Research Institute of Aviation Materials», Usacheva M.N. ,   Federal State Unitary Enterprise «All-Russian Scientific Research Institute of Aviation Materials», Khrulkov A.V. ,   Federal State Unitary Enterprise «All-Russian Scientific Research Institute of Aviation Materials»
Published: September 2021

Automated Fiber Placement is one of the main technologies used today for manufacturing of modern composite materials from narrow bundles of 3.2; 6.35 and 12.7 mm wide, which are usually stacked in one sequence using a special head. AFP allows you to lay out parts with complex geometry. The second part considers the development of technology from its origination to the present day and provides the description of the laying process and modern equipment on the market.
RESEARCH OF RESISTANCE OF RUBBERS TO THE EXPOSURE OF MOLD FUNGI
Authors:   Federal State Unitary Enterprise «Federal Research and Production Center «Progress», Кhorova E.A. , Tretyakova N.A. ,   Federal State Unitary Enterprise «Federal Research and Production Center «Progress», Vakulov N.V. ,   Federal State Unitary Enterprise «Federal Research and Production Center «Progress»
Published: September 2021

The article presents the tests results for the resistance of rubbers of three brands to mold fungi in natural atmospheric conditions and in laboratory conditions when they are artificially infected with spores. These results show that the intensity of development of fungi on the surface of rubbers is from 0 to 2 points with a norm of not more than 3 points. It has been determined that the strength properties of rubbers after exposure to mold fungi in laboratory and natural conditions are at the level of the initial ones. The paper provides the conclusion about the bactericidal properties of the components of rubber mixtures in relation to mold fungi.
AUTOCLAVE MOLDING OF LOWER WING PANEL SKINS FROM 1441 ALLOY PLATES
Authors:   Federal State Unitary Enterprise «All-Russian Scientific Research Institute of Aviation Materials», Serebrennikova N.Yu. , Nefedova Yu.N. ,   Federal State Unitary Enterprise «All-Russian Scientific Research Institute of Aviation Materials», Selivanov A.A. ,   Federal State Unitary Enterprise «All-Russian Scientific Research Institute of Aviation Materials», Kovalenko A.V. ,   Federal State Unitary Enterprise «All-Russian Scientific Research Institute of Aviation Materials», Ogurtsov P.S. ,   Public Joint Stock Company «Voronezh Joint Stock Aircraft Building Company», Soloviev V.A. ,   Public Joint Stock Company «Voronezh Joint Stock Aircraft Building Company»
Published: September 2021

The paper considers the main features of the process of autoclave molding of complex geometric shape parts from plates of medium-strength alloy 1441, combined with aging to the state of T11 heat treatment. The article provides the results of modeling of the autoclave molding process of skin fragments of the lower wing panel made of 1441 alloy, and the temperature-time parameters of this process determined during the research. The paper generalizes the results of examination of mechanical and corrosion characteristics of the fragments of the lower wing panel. The possibility of obtaining high accuracy of geometry of complex shaped elements while ensuring uniformity of characteristics in the entire area of parts is shown.
NIOBIUM REINFORCED BY α-Al2O3 FIBERS Part 1. Two-Component Compositions
Authors:   Federal State Unitary Enterprise «All-Russian Scientific Research Institute of Aviation Materials», Kablov E.N. , Shchetanov B.V. ,   Federal State Unitary Enterprise «All-Russian Scientific Research Institute of Aviation Materials», Bolshakova A.N. ,   Federal State Unitary Enterprise «All-Russian Scientific Research Institute of Aviation Materials», Efimochkin I.Yu. ,   Federal State Unitary Enterprise «All-Russian Scientific Research Institute of Aviation Materials», Shcherbakov E.M. ,   Federal State Unitary Enterprise «All-Russian Scientific Research Institute of Aviation Materials»
Published: September 2021

The paper reviews the results of development of a new class of high-temperature composites based on niobium and various types of reinforcers continuous monocrystalline fibers (MCF) α-Al2O3, with TiN, Mo, W barrier coatings, and with controlled (Si, Ti) and uncontrolled (O, C) impurities. The analysis of Nb–Si, Nb–C, Nb–O binary diagrams and Nb–Si–Ti, Nb–Fe–Ti ternary diagrams was performed, on the basis of which the matrix compositions were selected. The basis for the preparation of composites was the powder method of mechanical alloying of the mixture preparing, followed by its pressing together with α-Al2O3 MCF by spark plasma sintering (SPS) and further preparation of experimental samples. An analysis of the interaction of fibers with a matrix was carried out, where the matrix was Nb or system on the basis of the above mentioned binary or ternary diagrams.
Przegląd metod przygotowania mieszanin wzorcowych dla kontroli procesu nawaniania
Authors:   Instytut Nafty i Gazu – Państwowy Instytut Badawczy, Lisman Szymon , Huszał Anna ,   Instytut Nafty i Gazu – Państwowy Instytut Badawczy
Published: September 2021

Nawanianie, podobnie jak wiele innych procesów technologicznych, jest procesem stale ewoluującym. Dzięki szybko rozwijającej się technologii realizacji tego procesu pojawiają się coraz doskonalsze narzędzia służące do jego realizacji, wliczając w to również nadzór nad nim. Obecnie w Polsce proces nawaniania jest ustabilizowany i prowadzony na odpowiednio wysokim poziomie. Przyjęte zostały międzynarodowe standardy w tym zakresie. Jednym z ważniejszych wymagań dotyczących jakości gazów ziemnych dostarczanych odbiorcom z sieci rozdzielczej, gwarantującym ich bezpieczne użytkowanie, jest zapewnienie właściwego poziomu nawonienia, który będzie umożliwiał wykrycie niekontrolowanych upływów gazów z sieci rozdzielczej, instalacji i urządzeń gazowych. Zmienność stężenia środka nawaniającego w sieci gazowej jest wielkością dynamiczną, towarzyszącą stale procesowi nawaniania. Stąd wynika potrzeba stałego nadzoru metrologicznego nad przebiegiem procesu, m.in. przez pomiary stężenia środka nawaniającego. W ostatnich latach w przemyśle gazowniczym obserwuje się tendencję do prowadzenia coraz dokładniejszej kontroli procesu nawaniania metodami analitycznymi, w tym zwłaszcza metodą chromatografii gazowej. Podstawowym warunkiem uzyskiwania dokładnych wyników pomiarów wykonywanych metodami porównawczymi (do których zalicza się chromatografia gazowa), wymagającymi kalibracji lub wzorcowania urządzeń pomiarowych, jest stosowanie wzorców o odpowiedniej jakości metrologicznej. W celu uzyskania wyniku odznaczającego się możliwie jak najniższą niepewnością niezbędne jest wręcz stosowanie gazowych mieszanin wzorcowych środka nawaniającego o jak najwyższej tolerancji analitycznej. Jakość i stabilność gazów wzorcowych uzależniona jest od wielu różnorodnych czynników, takich jak czystość składników stosowanych do ich wytworzenia, szczelność instalacji służącej do ich wytwarzania czy rodzaj samej metody wytwarzania. W praktyce gazowe mieszaniny wzorcowe otrzymywane są przy zastosowaniu technik statycznych, dynamicznych lub mieszanych. Niniejszy artykuł przybliża różne metody sporządzania mieszanin wzorcowych jednego ze środków nawaniających, stosowanych m.in. w Polsce, jakim jest tetrahydrotiofen (THT). Opisano również wyniki przeprowadzonych w Zakładzie Nawaniania Paliw Gazowych Instytutu Nafty i Gazu – Państwowego Instytutu Badawczego badań stabilności składu mieszanin wzorcowych THT wykonywanych metodą własną. Pozwoliły one określić minimalny okres przechowywania i użytkowania wzorców bez pogorszenia się ich jakości.
Sprawdzenie możliwości wykorzystania potencjału mikroskopii IR w branży naftowej
Authors:   Instytut Nafty i Gazu – Państwowy Instytut Badawczy, Wieczorek Agnieszka , Sroczyńska Dagmara ,   Instytut Nafty i Gazu – Państwowy Instytut Badawczy
Published: September 2021

Mikroskopia w podczerwieni z transformacją fourierowską (FT-IR) wykorzystuje dwie techniki badawcze: mikroskopię i spektrometrię FT-IR. Pozwala to na analizę materiału pod kątem występowania charakterystycznych grup funkcyjnych oraz na przedstawienie jego topograficznego rozkładu. Daje to możliwość analizy związków chemicznych w mikroobszarach badanego materiału. Przegląd literatury wskazuje na szerokie zastosowanie tych połączonych technik, m.in. w diagnostyce medycznej, kryminalistyce czy w badaniu jednorodności analitów. Analizie poddawane są tkanki, a także pojedyncze komórki. Wśród zalet połączonych technik jako narzędzia diagnostycznego należy wymienić możliwość rejestracji anomalii składu chemicznego z mikrometrową rozdzielczością przy minimalnej preparatyce, próbki nie wymagają dodatkowego utrwalania materiału do badań ani stosowania żadnych markerów. Niniejszy artykuł ma na celu przedstawienie przykładowych możliwości zastosowania mikroskopii IR w pracy laboratorium naftowego, podczas badania próbek ciekłych oraz stałych w postaci zawiesin czy osadów wytrąconych na elementach zbiorników, silników i różnych urządzeń. Wskazano na konieczność właściwego przygotowania próbek w zależności od ich charakteru oraz rodzaju zastosowanej techniki. Pokazano też możliwości związane z posiadanymi bibliotekami widm oraz mapowania po wybranym obszarze widm. Należy jeszcze raz wskazać na istotną rolę, jaką pełni mikroskopia FT-IR w badaniu próbek niejednorodnych, głównie ze względu na możliwość wytypowania konkretnych punktów pomiarowych o większej koncentracji substancji organicznych w stosunku do obszarów z dużą koncentracją, np. wody. Dzięki temu można w prostszy sposób określać, czy dana substancja lub produkt występujący w miejscu poboru wpływa na powstawanie osadów lub emulsji. Mikroskopia IR umożliwia przede wszystkim prowadzenie analizy niewielkiej ilości próbki, co jest szczególnie ważne w badaniu pobranych substancji w śladowych ilościach.
Problemy rozwoju miast europejskich okresu postindustrialnego
Authors: Wojnarowska Anna
Published: September 2021

Autorka poświęca tę publikacje problemowi rozwoju miast europejskich po okresie industrializacji. Odnosi się do „Raportu Bruntlanda”, w którym została sformułowana zasada rozwoju zrównoważonego uznana przez wiele krajów, w tym przez Unię Europejską. Autorka zwraca przede wszystkim uwagę na to, że niezbędnym elementem rozwoju zrównoważonego stała się także rewitalizacja terenów i obiektów poprzemysłowych oraz zdegradowanych obszarów miejskich.
Perspektywa organizacji
Authors: Kołodziejczak Małgorzata
Published: September 2021

Autorka pracy wychodząc z założenia, że w każdym dobrze przygotowanym procesie zarządzania zmiana rozpoczyna się od rozpoznania i zrozumienia stanu wyjściowego, a kończy na określeniu stanu docelowego, postanowiła podjąć próbę wyjaśnienia i scharakteryzowania istoty zmian organizacyjnych, a następnie wydobyć i określić cechy organizacji: tradycyjnej i współczesnej oraz charakterystycznych dla nich sposobów zarządzania, po to by w konsekwencji skonfrontować je ze sobą, wskazując tym samym generalne kierunki zmian dla organizacji chcących się rozwijać i aspirować do miana organizacji przyszłości.
Molecular Characterization and Assessment of Hematobiochemical and Oxidative Indices in Dog Naturally Infected with Babesia canis vogeli
Authors: Shil Prabhakar , Solanki Jayesh B. , Kumar Niranjan , Patel Dharmesh C. , Thakuria Nabanita
Published: September 2021

Background: The study was aimed at molecular detection and assessment of important biomarkers in the natural cases of canine babesiosis. Methods: Blood samples of 239 dogs were examined in PCR by targeting 18S rRNA gene. Hematobiochemical, oxidant-antioxidant and plasma cortisol parameters were estimated in the dogs on the day of presentation. Result: The 18S rRNA gene sequence showed 100% homology with Babesia canis vogeli and phylogram formed a tight cluster of B. canis vogeli originated from India/other countries. Higher prevalence rate (P less than 0.05) was noted in the PCR (7.95%) than the cytological technique (3.76%). Hemogram of infected dogs showed decrease (P less than 0.05) in the mean value of hemoglobin, RBC, WBC, HCT, whereas an increase in MCHC, lymphocytes, eosinophils, monocytes and thrombocytes. The ALT (49.29±1.53 U/L), AST (48.33±2.93 U/L), total protein (10.56±0.60 g/dL), creatinine (1.41±0.10 mg/dL) and urea (19.32±0.97 mg/dL) showed significant (P less than 0.005) increase, whereas decrease in the levels of serum glucose (82.76±2.78 mg/dL) in the infected dogs. Activity of MDA and SOD was significantly (P less than 0.01) increased (7.50±7.08 nmole/µL blood) and decreased (0.015±3.91 nmole/µL blood) in the diseased dogs, respectively. Plasma cortisol concentration was 11.10±7.84 nmol/L and 2.77±5.78 nmol/L (P less than 0.01) in the infected and uninfected dogs, respectively.
Determining the needs of introductory statistics university students: A qualitative survey study
Authors: Coetzee Wilma
Published: September 2021

Since we are entering the fourth industrial revolution, it becomes increasingly important that students, irrespective of their field of study, are data literate. However, many students view their mandatory statistics modules with contempt. This qualitative study analysed students’ comments to determine what their needs are to improve these modules to increase the students’ enjoyment and improve their performance in statistics. Monte Carlo simulations were used to scientifically justify that data saturation was attained by the survey study. This is an objective reproducible method to determine if a sample size is large enough to ensure that important themes are not missed. It is clear from the students’ responses that they do not enjoy being taught in the same way students were taught statistics years ago. Statistics education needs to change to keep up with changing times and the needs of the new generation. The comments of the students touched on similar topics that are being addressed internationally regarding the instruction and assessment of statistics students; therefore, it will be sensible to implement these recommendations in future.
A district beginner teacher induction initiative in South Africa: The pressure and support contestation
Authors: Kadenge Emure
Published: September 2021

The main aim of this paper is to explore an approach to beginner teacher induction in a Johannesburg, South Africa education district’s induction programme. It focuses on how the idea of beginner teacher induction is conceptualised by examining the district induction programme’s teaching form and foci. Data were collected through interviews with four district officials coordinating and facilitating the district’s teacher induction programme. While it is apparent that beginner teacher induction is being prioritised due to the pressing need for South African teacher professional development initiatives to work more towards developing and strengthening a repertoire of sound instructional practices. Findings indicate that current teacher induction practices offered by the selected district are somewhat misaligned with this imperative. The teaching form and foci of the districts’ induction programme reveals serious contestation as pressure to perform is exerted rather than supporting teachers early in their careers. The activities therein are evidently more focused on familiarising beginner teachers with legal frameworks that govern and regulate their duties as members of the public service. Although the district induction programme has an overarching aim of developing beginner teachers’ pedagogical practices, upon implementation, the emphasis is on accountability and pressure at the expense of developmental support and capacity building.
Remote learning as an option by resilient English teachers in Gauteng resource-constrained secondary schools
Authors: Rwodzi Christopher , De Jager Lizette
Published: September 2021

In literature and education policies, the teaching of English using remote learning strategies is recommended, but for the most part, teachers are not pedagogically capacitated to teach their respective subjects using technology in South Africa. To explore the experiences of such teachers, this study sought to understand the models and pedagogical initiatives on the teaching of English through remote teaching and learning. Emergency remote teaching by resilient English teachers is an intervention project for resource-constrained secondary schools in South Africa including the period after the Covid-19 outbreak. Circumstances leading to the use of remote learning strategies include lack of access to intellectual and material resources in some schools in Gauteng. An interpretive, qualitative case study was undertaken to explore how teachers use remote learning strategies in teaching English as a second language in township secondary schools. Data were collected using semi-structured interviews (phone calls) and document analysis. Data were analysed using an inductive thematic framework to answer the key research questions. Teachers’ voices, actions and documents on the use of remote learning strategies were collected for analysis yielding themes and patterns. Findings of the study indicate that collaboration, networking, social media communication and other digital literacy practices are teacher initiatives leading to the utilisation of digital connection platforms for socialisation, teaching and learning. The use of distance learning, blended learning, mobile learning and online learning as strategies in times of crisis and in resource-constrained environments help learners and teachers to achieve their outcomes.
PREVALENCE AND DISTRIBUTION OF DIFFERENT NATURAL ENEMIES IN THE HARLEQUIN LADYBIRD HARMONIA AXYRIDIS (COLEOPTERA COCCINELLIDAE)
Authors: BALOG LUCA ESZTER , HOLOVACHOV OLEKSANDR , TÖRÖK JÚLIA KATALIN
Published: September 2021

The harlequin ladybird Harmonia axyridis (Coleoptera: Coccinellidae) is one of the most common invasive alien species in the world, which has a global impact on biodiversity and agriculture, and causes economic loss and harm to humans. This insect can be infected by different natural enemies, but their interactions remain understudied. In the present study, 581 adult Ha. axyridis specimens were collected from 21 localities in Hungary with the help of citizen scientists and examined for natural enemies. The parasitic nematode Parasitylenchus bifurcatus (Nematoda: Allantonematidae) is reported in Hungary on the harlequin ladybird for the first time. The ladybirds were also infected by the ectoparasitic fungus Hesperomyces virescens (Ascomycota: Laboulbeniales) and parasitoid Dinocampus coccinellae (Hymenoptera: Braconidae). The nematode parasite was present in all localities where Hesperomyces-infected ladybirds appeared. The prevalence of recorded natural enemies varied by locality: for P. bifurcatus it ranged from 1% to 8%; for He. virescens from 2% to 36%; and for the parasitoid it was 4%. Besides, a statistically significant positive correlation was shown between the nematode and the fungus co-infection using Spearman’s correlation. A study on the multiparasitism of harlequin ladybirds was not yet performed in Hungary. The study area is located between two distant areas in Europe where co-infections had already been observed, indicating that this is probably not a sporadic phenomenon, but that parasitism of the harlequin ladybird by multiple natural enemies might be prevalent throughout the area.
XYLOSANDRUS COMPACTUS AND LIPARTHRUM COLCHICUM (COLEOP- TERA SCOLYTINAE) IN TUSCANY: A PRELIMINARY SCREENING OF ASSOCIATED FUNGI
Authors: BENVENUTI CLAUDIA , STRANGI AGOSTINO , IOVINELLA IMMACOLATA , BARZANTI GIAN PAOLO , SIMONI SAURO , VITALE SALVATORE , LUONGO LAURA , FRANCARDI VALERIA , ROVERSI PIO FEDERICO
Published: September 2021

Xylosandrus compactus and Liparthrum colchicum are two Scolytinae recorded for the first time in Italy in 2011 and 2019, respectively. X. compactus is an “ambrosia beetle” causing damages to several plants typical of the Mediterranean maquis through its digging activity on twigs and branches of the host plants. L. colchicum is a “bark beetle”, monophagous on laurel shrubs and trees. During a survey performed in summer of 2020, in “Tenuta Salviati” located in the Migliarino Natural Park (Pisa, Tuscany), adults of X. compactus and L. colchicum were collected from the same branches and apical twigs of Laurus nobilis hedges. The study aimed at characterizing fungi isolated from the external surface of the two scolytids bodies, to evaluate similarities and even their role in fungal spreading in the environment.
Arte Latino-Americana: percursos e omissões na historiografia da arte
Authors:   Universidade Federal da Bahia, Muñoz Alejandra Hernández
Published: September 2021

A maioria dos cursos e dos manuais de História Geral da Arte existentes no Brasil não aborda a arte latino-americana. São pouquíssimas as iniciativas acadêmicas, seja através de disciplinas de graduação ou de linhas de pesquisa de pós-graduação, que trabalham especificamente sobre esse tema, e quando o fazem, é sob um recorte espaço–temporal muito sucinto que tende a compreender de modo anedótico ou generalista algumas características das principais culturas pré-colombianas.
Visões e revisões da talha neoclássica na Bahia
Authors:   Universidade Federal da Bahia, Freire Luiz Alberto Ribeiro
Published: September 2021

A investigação da talha neoclássica no Brasil e na Bahia foi grandemente prejudicada nos seus princípios, em 1940, pelo preconceito dos primeiros estudiosos da arte antiga brasileira, que, como cultores do barroco viram o neoclássico com o mesmo preconceito com que os entusiastas do neoclássico tinham visto o barroco no final do século dezoito e parte do dezenove. As virtudes do barroco passaram à defeito, assim como os defeitos do neoclássico foram as suas virtudes no passado.
Historiografia da Arte no Brasil: por um regime de oposições
Authors:   Universidade Federal de Uberlândia, Froner Yacy–Ara
Published: September 2021

Considerando questões recentes – como a instabilidade dos processos de geração de conhecimento apontados pela pós-modernidade e a incapacidade de uma “estética universal” partilhar uma percepção ampliada da arte e da cultura; as limitações de métodos clássicos de normatização e definição das estruturas da produção artística, e as incompatibilidades e/ou proximidades dos métodos interpretativos –, pesquisadores em História da Arte brasileira têm buscado desenvolver estruturas de apoio que possibilitem construir um trabalho por meio de uma visão ampliada dessas projeções – conhecendo os limites e os problemas de cada um desses caminhos –, tentando trabalhar de maneira consciente com as ferramentas disponíveis.
A arte parietal romana e diversidade
Authors:   Universidade Estadual de Campinas, Funari Pedro Paulo Abreu , Cavicchioli Marina Regis ,   Universidade Estadual de Campinas
Published: September 2021

As discussões contemporâneas sobre o estatuto epistemológico das Ciências Humanas têm repercutido, nas últimas décadas, no estudo da Arte antiga, em geral, e das manifestações parietais romanas, em particular. Nesta ocasião, e no contexto de um colóquio sobre as discussões historiográficas, trataremos dessas questões teóricas, aplicadas ao caso das paredes romanas de Pompéia.
The drivers of vine-plant root microbiota endosphere composition include both abiotic and plant-specific factors
Authors: Biget Marine , Mony Cendrine , Aubry Marc , Jambon Olivier , Quaiser Achim , Chable Véronique , Pernet Sabrina , Vandenkoornhuyse Philippe
Published: September 2021

Microorganisms associated with plants are determinant for their fitness, but also in the case of vine grapes, for the quality and quantity of the wine. Plant microbiota is, however highly variable in space despite deterministic recruitment from the soil reservoir. Therefore, understanding the drivers that shape this microbiota is a key issue. Most studies that have analysed microorganisms associated with vines have been conducted at large scales (e.g., over 100 km) and have analysed the bulk soil and the rhizosphere. In this study, we focused on the root-microbiota endosphere, the most intimate fraction of microorganisms associated with plants. We sampled vine roots in 37 fields distributed throughout a vineyard to investigate drivers shaping the grapevine microbiota at the α- (i.e., within-field) and γ- (i.e., between-field) diversity scales. We demonstrated that vine endospheric microbiota differed according to both the edaphic and plant-specific parameters including cultivar type and age. This work supports the idea of an existing microbial terroir occurring within a domain and offers a new perspective for winemakers to include the microbial terroir in their management practices.
An Exact Solution to the Free Vibration Analysis of a Uniform Timoshenko Beam Using an Analytical Approach
Authors: Fogang Valentin
Published: September 2021

This study presents an exact solution to the free vibration analysis of a uniform Timoshenko beam using an analytical approach, a harmonic vibration being assumed. The Timoshenko beam theory covers cases associated with small deflections based on shear deformation and rotary inertia considerations. In this paper, a moment-shear force-circular frequency-curvature relationship was presented. The complete study was based on this relationship and closed-form expressions of efforts and deformations were derived. The free vibration response of single-span systems, as well as that of spring-mass systems, was analyzed; closed-form formulations of matrices expressing the boundary conditions were presented and the natural frequencies were determined by solving the eigenvalue problem. Systems with intermediate mass, spring, or spring-mass system were also analyzed. Furthermore, first-order dynamic stiffness matrices in local coordinates were derived. Finally, second-order analysis of beams resting on an elastic Winkler foundation was conducted. The results obtained in this paper were in good agreement with those of other studies.
Shark Conservation – Analysis and Synthesis
Authors: Porcher Ila France , Darvell Brian W
Published: September 2021

A detailed analysis of fishing records has shown that the shark species accessible to global fisheries have been systematically depleted for decades. They were already fished to about 10 percent of their former levels by 2003. Now one species after another is being listed on the IUCN Red List of Threatened Species as their numbers drop towards extinction. Shark depletion has not been well documented and a large proportion of shark mortality has been bycatch, the target species being teleost fish. But with the rise in value of shark fins due to the shark fin trade, at the same time as teleost fish stocks have become severely overfished, sharks, along with tuna, have become the most valuable catches. Fishing on the high seas is scarcely profitable, and so is heavily supported by subsidies. But the shark fin trade, in which organized crime is heavily involved, is driven by enormous profits and provides a powerful demand for the fins of all sharks. Thus it is now being supplied by fisheries around the world. There is no interest in sustainability in consumer countries, and neither the will nor the resources to manage the trade exist. Although some shark fisheries might have been managed sustainably in some regions for certain species for meat, such fisheries are increasingly dependent on the shark fin trade.. The rising global demand for shark fins, coupled with the increasing depletion of the animals supplying that demand, makes commercial fishing for sharks unsustainable. Given their high ecological value across the aquatic ecosystems they inhabit, it is important that they receive more effective measures of protection going far beyond the currently existing ones. In particular, protection of all sharks, manta rays, devil rays and rhino rays through an Appendix I CITES listing should be effected immediately due to the scale of the global take of the shark fin trade and the state of shark depletion amply documented in the literature.
TF-IDF Feature-Based Spam Filtering of Mobile SMS Using Machine Learning Approach
Authors: Hossain Syed Md. Minhaz , Kamal Khaleque Md. Aashiq , Sen Anik , Sarker Iqbal H.
Published: September 2021

Short Message Service (SMS) is becoming the secure medium of communication due to large-scale global coverage, reliability, and power efficiency. As person--to--person (P2P) messaging is less secure than application-to-person (A2P) messaging, anyone can send a message, leading to the attack. Attackers mistreat this opportunity to spread malicious content, perform harmful activities, and abuse other people, commonly known as spam. Moreover, such messages can waste a lot of time, and important messages are sometimes overlooked. As a result, accurate spam detection in SMS and its computational time are burning issues. In this paper, we conduct six different experiments to detect SMS spam from the dataset of 5574 messages using machine learning classifiers such as Multinomial Naïve Bayes (MNB) and Support Vector Machine (SVM), considering variations of \textit{Term Frequency-- Inverse Document Frequency (TF--IDF)} features for exploring the trade-off among accuracy, F1-score and computational time. The experiments achieve the best result of the accuracy of 98.50\%, F1--score of 98\%, and area under roc curve (AUC) of 0.97 for multinomial naïve bayes classifier with TF--IDF after stemming.
Detecting the Institutional Mediation of Push–Pull Factors on International Students’ Satisfaction during the COVID-19 Pandemic
Authors: Chang Dian-Fu , Chou Wen-Ching
Published: September 2021

In this study, we designed a structural model to determine the relationships among push–pull factors, institutional situations, and satisfaction during the COVID-19 pandemic. The 17 selected indicators fell under five domains, namely push factors, pull factors, institutional leadership, international strategies, and satisfaction. Structural equation modeling (SEM) was used to verify the assumptions of the model. Based on 1005 degree-seeking international students' views, this study found that push and pull factors may coincidentally exist, and their functions can be modified by institutional situations. The findings suggest pull factors will, through institutional leadership, impact students' satisfaction, while push factors will not. Moreover, the detection of institutional mediation can provide useful information for specific institutes to develop their future recruiting or retaining strategies. These findings enriched our knowledge of the field during the pandemic. For future studies, this design may be useful to interpret the phenomena of global student mobility in higher education settings.