bluuebunny/crossref_metadata_2025 huggingface dataset:
Dandelion (Taraxacum officinale) Root Extract as a Green Corrosion Inhibitor of Steel in 3% NaCl
Authors: Mitrović Marija , Apostolov Suzana , Fuchs-Godec Regina , Salkunić Bajro , Vastag Gyöngyi , Тоmić Milorad
Published: September 2024

This study investigates the potential of dandelion (Taraxacum officinale) root ethanol extract as a green corrosion inhibitor for two types of steel (TH-550 and TS-275) in a chloride-rich environment. Steel samples were chemically prepared and immersed in a 3% NaCl solution, both without and with the extract at concentrations of 0.5, 1.0, and 1.5 g/L. Morphology and composition of steel samples after 24 h in blank and inhibited solutions, examined by SEM and EDX, revealed the inhibitive effect of dandelion extract, since corrosion products were not visible on the steel surfaces after 24 h in the inhibited solution, unlike the blank steel surfaces. Based on the weight loss, dandelion extract inhibited corrosion processes of S2 in a chloride-rich environment at all examined concentrations; on the other hand, it acted as a corrosion inhibitor of S1 in 3% NaCl only at the concentrations of 1.0 and 1.5 g/L. According to corrosion current, corrosion potential and polarization resistance determined by potentiodynamic tests, dandelion root extract is a mixed corrosion inhibitor with a dominant anodic reaction, which decreases corrosion rate by adsorbing onto anodic sites and prevents steel dissolution. According to ATR-FTIR analysis, hydroxyl groups within the inulin molecule could act as the dominant metal-complexing groups. Therefore, the adsorption properties of dandelion root extract are most probably related to this specific site. Based on electrochemical impedance spectroscopy, the enhancement of corrosion resistance in the steel samples was evident in all the inhibited solutions examined compared to a pure 3% NaCl solution.
A U-Net Model for Urban Land Cover Classification Using VHR Satellite Images
Authors: Fawzy Mohamed , Barsi Arpad
Published: September 2024

Urban settings are dynamic, constantly changing, and presenting a wide range of surface materials with high diversity in both spatial and spectral variation. As a result, mapping urban growth, evaluating infrastructure, managing water resources, and monitoring natural land cover become more complex tasks. Urban applications have made considerable progress thanks to the abundance of VHR orbital data and the recent development of artificial intelligence strategies especially neural networks. Convolutional neural networks have the potential to significantly enhance the analysis of urban land cover by addressing the limitations of traditional techniques. U-Net is a popular neural network for land cover analysis in remote sensing images. The current research presents a CNN model employing U-Net for image semantic segmentation in urban study area using both spectral and spatial context of VHR satellite data. The proposed model is trained, validated, and tested for VHR satellite image classification into five urban classes: water, vegetation, bare soil, road, and building. The CNN semantic segmentation results are compared to maximum likelihood image classification outcomes for validation and stability evaluation. A confusion matrix is applied to the classified scenes to determine the overall accuracy, producer's and user's accuracy, and Kappa coefficient using 400 random points with their corresponding ground truth. The U-Net image semantic segmentation technique achieved an overall accuracy of 87.50% and Kappa coefficient of 0.8395 which outperforms the maximum likelihood classification method with an overall accuracy of 83.25% and Kappa coefficient of 0.7812.
Interdyscyplinarność i transdyscyplinarność w Szkole Naukowego Zarządzania Politechniki Warszawskiej – 100 lat doświadczeń
Authors: Głodziński Eryk , Kosieradzka Anna , Zawiła-Niedźwiecki Janusz
Published: September 2024

Artykuł przedstawia w ujęciu syntetycznym rozwój interdyscyplinarny i transdyscyplinarny naukowego zarządzania w Politechnice Warszawskiej. Wskazuje na dwa niezależne nurty tego rozwoju – wokół jednostek zajmujących się naukowo zarządzaniem (Wydział Zarządzania, Instytut Organizacji Systemów Produkcyjnych, Kolegium Nauk Ekonomicznych i Społecznych) oraz niezależnie od nich. W artykule zdefiniowano pięć okresów rozwoju naukowego, które odnoszą się do zmian instytucjonalnych w Politechnice Warszawskiej. Na podstawie przeprowadzonych badań można stwierdzić, że zarówno interdyscyplinarność jak i transdyscyplinarność badań były silnie obecne od początku powstania Szkoły Naukowego Zarządzania Politechniki Warszawskiej, co wynikało z doświadczenia, wykształcenia oraz bliskich relacji kolejnych pokoleń naukowców z innymi dyscyplinami.
Sopocka Szkoła Zarządzania i jej rola w rozwoju polskich nauk o zarządzaniu
Authors: Nogalski Bogdan , Szpitter Agnieszka A.
Published: September 2024

Celami artykułu są: syntetyczne przedstawienie sylwetki twórcy SSZ prof. A. Czermińskiego i kluczowych sfer jego dorobku, nakreślenie drogi powstawania i rozwoju tej szkoły naukowej, zainicjowanej i w toku wieloletniej pracy organicznej konsekwentnie tworzonej przez profesora Alfreda Czermińskiego i kolejnych jego następców, wkład teoretycznego i praktycznego dorobku naukowego zespołu SSZ w rozwój teorii i praktyki polskich nauk o zarządzaniu, a także aktywność, inspirację i oddziaływanie przedstawicieli SSZ na rozwój środowiska naukowego i praktycznego nauk o zarządzaniu w Polsce. W artykule przedstawiono zakres oraz twórczą, merytoryczno – metodyczno – instytucjonalno – środowiskową – skalę działania Sopockiej Szkoły Zarządzania w budowaniu wartości poznawczej i praktycznej polskich nauk o zarządzaniu. Jednocześnie artykuł pokazuje jak pasja jednego człowieka, umiejętność zaszczepienia jej w członkach zespołu poparta ogromną pracą, prowadzi do osiągania niesamowitych rezultatów. W artykule wykorzystano perspektywę historyczną i podejście etnograficzne, które badawczo wzmocniono metodą badań longitudinalnych polegających na wieloletniej obserwacji uczestniczącej tej samej grupy. Zastosowana perspektywa, a zwłaszcza podejścia posiada charakter indukcyjny co umożliwia holistyczne spojrzenie oraz tzw. głęboki wgląd w kontekst społeczny i kulturowy badanej organizacji, jaką jest Sopocka Szkoła Zarządzania.
Inwestycje i ich finansowanie w przedsiębiorstwach niefinansowych. Polska na tle krajów strefy euro
Authors: Samborski Adam
Published: September 2024

Przedmiotem badań jest poziom inwestycji i ich finansowania w przedsiębiorstwach w Polsce (PL) i strefie euro (SE). Problem badawczy dotyczy różnic w poziomie inwestycji i ich finansowaniu w przedsiębiorstwach w PL i SE. Dane do badań pozyskano z rachunków kapitałowych. Obejmują one okresy kwartalne za lata 1999 do 2022. Celem badań jest sprawdzenie czy występują różnice w poziomie inwestycji i ich finansowania w przedsiębiorstwach w PL i SE. W wyniku przeprowadzonych badań ustalono, że: przeciętnie poziom inwestycji w aktywa niefinansowe i ich finansowania wyrażony jako % wartości dodanej brutto (WDB) jest wyższy w przedsiębiorstwach w PL niż w SE; różnice w poziomie inwestycji i finansowania w przedsiębiorstwach w PL i SE są istotne statystycznie; przeciętne kwartalne tempo zmian w poziomie inwestycji w aktywa niefinansowe i ich finansowania w przedsiębiorstwach w PL jest dodatnie, a w SE ujemne. Ponadto, z porównania wygładzonych kwartalnych szeregów czasowych wynika, że w przedsiębiorstwach w PL i w SE istnieją znaczące różnice w poziomie akumulacji brutto i oszczędnościach brutto wyrażonych jako % WDB. Zauważono też stosunkowo nowe zjawisko, które nasiliło się po kryzysie finansowym, w postaci wystąpienia nadwyżki w rachunku kapitałowym sektora przedsiębiorstw niefinansowych (wierzytelności netto). Oznacza to wzrost znaczenia w przedsiębiorstwach inwestycji w aktywa finansowe.
VaR and VaO in project management: A new approach
Authors: Węgrzyn Ryszard
Published: September 2024

The purpose of this article is to investigate an approach in which both VaR and value at opportunity (VaO) are used to evaluate projects. VaO in this case answers the question of what is the largest profit a decision-maker can expect at the assumed level of probability. This article presents an approach involving estimating VaO in a new way and the VaO/VaR ratio, which are important when making decisions regarding projects. It also presents a method to determine the probability of achieving a result that is not worse than the adopted goal value (GV). The main advantages of the proposed approach are more information about profit and loss (P&L) distribution and improved communication with stakeholders and decision-makers.
تأثير تمرينات تعليمية بوسائل مساعدة في بعض القدرات الحركية للمبارزة بسلاح الشيش للطلاب
Authors: Taiba Faisal Jaber  , Prof. Dr. Anis Hussein Ali  , Asst. Prof. Dr. Issam Talib Abbas
Published: September 2024

تعد رياضة المبارزة إحدى الألعاب التي لها متطلباتها وأهدافها الرياضية والاجتماعية والنفسية والتربوية حيث تمارس على وفق قوانين معينة ومسارات حركية وقواعد تنظيمية خاصة تتطلب من ممارسيها بعض المتغيرات البدنية والحركية الخاصة والمميزة لكي يحافظ اللاعب فيها على مستواه البدني والحركي ويتمكن من التقدم الفني باتجاه الأداء المهاري الأمثل للوصول إلى أفضل النتائج صيغت مشكلة البحث من خلال الباحثون على العينة باعتبارها  احد مدربين الفئات العمرية التي تشرف على فئة الشباب لاحظت هؤلاء اللاعبين وصلوا الى مرحلة عدم التطور لذلك ارتأت الباحثون باستعمال وسائل مساعدة مختلفة حتى تغير من النمط الذي كان يستخدم لهم بالتعلم حتى تطور القدرات الحركية والاداء المهارى لديهم ، حيث  يهدف البحث الى تأثير التمرينات التعليمية بوسائل مساعدة في بعض القدرات الحركية للمبارزة بسلاح الشيش للطلاب. استخدم الباحثون المنهج التجريبي بتصميم المجموعتين المتكافئتين لملائمة وطبيعة المشكلة تحدد مجتمع البحث بطلاب المرحلة الثالثة كلية التربية البدنية وعلوم الرياضة للعام الدراسي (2023-2024) والبالغ عددهم (24 طالب) عمدت الباحثون تقسيمهم الى مجموعتين بالطريقة العشوائية البسيطة.
Trade Credit Borrowing Amidst the COVID-19 Pandemic: Evidence from Turkish Publicly Traded Firms
Authors: Karakoç Bahadır
Published: September 2024

This study focuses on the effects of the COVID-19 pandemic on trade credit borrowing among publicly traded Turkish firms. Leveraging panel data analysis, including Difference Generalized Method of Moments (GMM) and Fixed Effects Ordinary Least Squares (FE-OLS) methods, we investigate changes in the amount and duration of trade credit utilized by firms during the pandemic. Our findings reveal a significant increase in both the amount and duration of trade credit obtained from suppliers amidst the pandemic's economic disruptions. Notably, this trend is particularly pronounced among high-debt and low-cash firms, suggesting a heightened reliance on trade credit as a financing mechanism.
Системи керування трьохполочним газовим реактором у виробництві аміаку з моделлю. розробка алгоритму
Authors: Гурін О.М.
Published: September 2024

В цій роботі представлений підхід до розробкисистеми керування з моделлю газового реакторусинтезу аміаку. Комбінована форма моделі дозволяєвикористовувати переваги як експериментально-статистичного, так і детермінованого підходів, щозабезпечує високу адекватність, легкуадаптованість і широкий спектр застосувань —ключові аспекти при оптимізації та керуванніскладними технологічними об’єктами. Звикористанням цього підходу створена модельтриполичного газового реактору синтезу аміаку. Наоснові отриманих результатів розробляютьсяпрограми для реалізації запропонованих алгоритмів вавтоматизованій системі керування виробництвомаміаку, а також здійснюється їх адаптація длявиробничих умов. Впровадження даної системидозволить звузити діапазон параметрівтехнологічного процесу навколо оптимальногозначення, що приведе до значного економічногоефекту. Було розроблено уточнену інформаційно-логічну схему газового реактору синтезу аміаку, якадозволила детально описати внутрішні зв’язкиоб’єкта керування та оцінити їх вплив на вихіднікоординати реактору. Створено алгоритм роботисистеми керування з моделлю газового реакторусинтезу аміаку, отримано загальний виглядматематичної моделі реактору з вбудованимвнутрішнім теплообмінником, що дало змогувизначити рівняння критерію оптимальностіроботи реактору. Запропонований підхід дозволяє,вирішивши оптимізаційну задачу, визначити такізначення витрат "холодних" байпасів, при якихреактор працюватиме в умовах, близьких дооптимальних. Це забезпечує швидкий перехідсистеми до області, близької до оптимальної. Післяцього оптимальне значення концентрації метанолуна виході реактору синтезу визначається методомХука-Дживса. моделі для наступної оптимізації йкерування складним технологічним об’єктом.Виконано аналіз технологічного процесу синтезуаміаку як об’єкта керування. Розробленаматематична модель полки газового реакторусинтезу аміаку. Розроблена математична модельвнутрішнього теплообмінника. Розробленоматематична модель газового реактора синтезуаміаку. Для визначення невідомих параметрівматематичної моделі запропоновано системутестових впливів на трьохполочний газовий реакторшляхом змін витрат синтез-газу по холодним байпасам на відому фіксовану величину. Отриманоаналогічне рівняння четвертого ступеня, що повязуєконцентрацію аміаку на виході трьохполочногореактора з технологічними параметрами.Запропоноване рівняння може бути використано длярозв’язування оптимізаційної задачі. На підставіотриманих результатів розробляються програмидля реалізації запропонованих алгоритмів в АСУ ТПвиробництва аміаку.
Safety and efficacy of human amniotic epithelial stem cell eye drops in ocular chronic graft-versus-host disease
Authors: Cheng Xianjing , Fan Wei , Huang Ruihao , Zhao Yuancheng , Tang Yonghong , Huang Shiqin , Zhang Guanghui , Zhang Xi , Yuan Rongdi , Wang Xiaoqi
Published: September 2024

Not available.
Lymphoma cell-driven IL-16 is expressed in activated B-cell-like diffuse large Bcell lymphomas and regulates the pro-tumor microenvironment
Authors: Guan Xuwen , Wang Yi , Fang Teng , Wang Jingya , Li Ru , Hao Mu , Qiu Lugui , For Medical Sciences (CIFMS) CAMS Innovation Fund
Published: September 2024

The activated B-cell–like subtype of diffuse large B-cell lymphoma (ABC-DLBCL) displays a worse outcome than the germinal center B-cell–like subtype (GCB-DLBCL). Currently, targeting tumor microenvironment (TME) is the promising approach to cure DLBCL with profound molecular heterogeneity, however, the factors affecting the tumor-promoting TME of ABCDLBCL are elusive. Here, cytokine interleukin-16 (IL-16) is expressed in tumor cells of ABCDLBCL and secreted by the cleavage of active caspase-3. The serum IL-16 levels are not only a sensitive marker of treatment response but also positively correlated with unfavorable prognosis in DLBCL patients. While IL-16 shows few direct promotional effects on tumor cell growth in vitro, its bioactive form significantly promotes tumor progression in vivo. Mechanically, IL-16 increases the infiltration of macrophages by the chemotaxis of CD4+ monocytes in the TME enhancing angiogenesis, and the expression of cytokine IL-6 and IL-10, as well as decreasing T cell infiltration to accelerate tumor progression. This study demonstrates that IL-16 exerts a novel role in coordinating the bidirectional interactions between tumor progression and the TME. IMM0306, a fusion protein of CD20 mAb with the CD47 binding domain of SIRPα, reverses the tumorpromoting effects of IL-16,which provides new insight into treatment strategy in ABC-DLBCL.
Co-expression of CD69, CD49d, CD279 and CD20 in chronic lymphocytic leukemia cells is a new biomarker of active disease before or under therapy
Authors: Cadot Sarah , Ysebaert Loïc , Lamy Sébastien , Laurent Camille , Quillet-Mary Anne
Published: September 2024

Not available.
BET inhibitors down-regulate the expression of the essential lncRNA SMILO in multiple myeloma through regulation of the transcription factor FLI1
Authors: Gómez-Echarte Nahia , José-Enériz Edurne San , Carrasco-León Arantxa , Barrena Naroa , Miranda Estibaliz , Garate Leire , García-Torre Beatriz , Alonso-Moreno Sandra , Gimenez-Camino Naroa , Urizar-Compains Estibaliz , Olaverri-Mendizabal Danel , Aguirre-Ruiz Paula , Ariceta Beñat , Tamariz-Amador Luis-Esteban , Rodriguez-Otero Paula , Planes Francisco J. , Belver Laura , Martín-Subero José Ignacio , Prosper Felipe , Agirre Xabier
Published: September 2024

Not available.
The Double Jeopardy in Dengue Associated with Hemophagocytic Lymphohistiocytosis in an 8-year Child: A Case Reportcase report
Authors: Momin Majed Abdul Basit , Midivelly Srinivas , Haseeb Abdul
Published: September 2024

Dengue is an acute viral infection with potential fatal complications. Hemophagocytic lymphohistiocytosis (HLH) is an autoimmune-mediated phenomenon that can be triggered by various etiological agents including viral infections. Dengue-induced HLH is a serious condition and may prove fatal if not detected early and treated appropriately. Here we report a case of rapidly progressive and serious dengue infection that was complicated by HLH and multi-organ failure in a previously healthy 8-year-old male who initially presented with fever and abdominal pain. This case represents the importance of prompt diagnosis and treatment of such a potentially fatal clinical syndrome.
Bangladesh Journal of Infectious Diseases, June 2024;11(1):71-75
Clinical Characteristics of the Patients with Corona Virus Disease 2019 in Sylhet District of Bangladesh
Authors: Begum Momtaz , Deb Bidith Ranjan , Das Shantanu , Chowdhury Fahmida , Ahmed Shabbbir , Hamid Nasser , Moureen Adneen
Published: September 2024

Background: Bangladesh has suffered a lot corona virus disease 2019 (COVID 19), but clinical data on COVID 19 is fewer still.
Objective: The purpose of the present study was to determine the patterns of clinical characteristics of confirmed COVID 19 patients in Sylhet to contribute as information resource of our country.
Methodology: This cross sectional study was conducted in the inpatient Department of Medicine of Jalalabad Ragib-Rabeya Medical College Hospital, Sylhet, Bangladesh to evaluate the clinical characteristics among the COVID 19 patients from July 2020 to December 2020 by purposive sampling technique. For the purpose a total 75 RT PCR positive COVID 19 patients were included in the study and data were collected with a semi-structured questionnaire.
Results: The results showed that,85.3%% patients presented with fever, 46.7% with cough and 38.7.0% with dyspnoea. On examination 85.3% had fever, 38.7% had tacypnea, 38.7% had low SpO2 at room temperature, 57.3% had vesicular breath sound. Lab investigations (biochemical) mostly needed at admission for management of the patients were complete blood count (CBC) in 93.3% case, c reactive protein (CRP) in 76.0% case, D-dimer in 68.0% case, random blood sugar (RBS) in 56.0% case, serum creatinine in 54.7%, serum ferritin in 42.7%, serum electrolytes in 42.7%, electro cardiogram (ECG) in 38.7%. According to clinical classification for case management of COVID 19 58.7%, 21.3%, 16%, 2.7%, 1.3% were successively diagnosed as mild, moderate, severe, asymptomatic and critical COVID 19 infection. Among the study population 80.0% patient was in need of antibiotic, 60.0% anti coagulant, 48.0% steroid, 38.7% oxygen, 2.7% antiviral drugs, 1.3% mechanical ventilation during their treatment.
Conclusion: The results obtained from this study could urge more study on it to provide updated knowledge as well as find potential treatment strategies for this pandemic disease.
Bangladesh Journal of Infectious Diseases, June 2024;11(1):45-51
Role of Sonography in the Assessment of Severity and its’ Correlation with Platelet Count of Dengue Fever in Children
Authors: Ferdoucy Sultana Amena , Parveen Ruma , Rashid Mamun ur , Rahaman Khadiza , Begum Iffat Ara , Bhuyian Rokanuzzaman , Moureen Adneen
Published: September 2024

Background: Dengue Fever (DF), Dengue Hemorrhagic Fever (DHF), and Dengue Shock Syndrome are among the disorders caused by the Dengue virus.
Objective: The purpose of the present study was to assess severity of dengue by ultrasound findings and to correlate the ultrasound findings with blood platelet count.
Methodology: This prospective study was conducted in the at Dr. MR Khan Shishu Hospital & ICH, Dhaka, Bangladesh from May 2019 to October 2019. Total 107 dengue children patients aged from 0 to14 years old were selected as a study population. Purposive sampling technique was used. Data were collected with pre-tested, modified and structured questionnaire. Complete blood count/picture (CBC), Laboratory based serological tests and Ultra sonographic test were performed.
Results: USG studies were performed on all patients with severe dengue fever. Most of the dengue patients had blood platelet counts under 100000. USG studies revealed that Pericholecystic collection was the most common finding in dengue patients followed by thickening of GB, pleural effusion, pelvic collection, peri renal collection and ascites. In this study there was positive correlation between sonographic findings with platelet count of Dengue fever in children. The Mean and SD of platelet count was 56635.51±26267.633. Paired Samples correlations of sonographic finding with platelet findings were positively correlated but paired difference and t test result was significant. Clinical features and thrombocytopenia are help in lead us to the diagnosis of dengue. There were 86.92% patients had platelet counts under 100,000. There was positive correlation between sonography findings and platelet count. About 95.33% of the patients had Pericholecystic collection and 92.50% had GB Wall edema.
Conclusion: in conclusion, USG abdomen showing Pericholeystic collection and GB wall edema is a useful marker for early diagnosis of severe Dengue Fever.
Bangladesh Journal of Infectious Diseases, June 2024;11(1):16-21
Prevalence and Outcomes of COVID-19 Infection and its Associated Socio-demographic Factors among Population in North-East Region of Bangladesh
Authors: Zeba Zebunnesa , Boitchi Anika Bushra , Yusuf Md. Abdullah , Rahman Mayisha , Rahman Md. Mizanur , Moureen Adneen , Sharif Ahmed Raihan
Published: September 2024

Background: Different countries and different regions within those countries have exhibited distinct COVID-19 infection prevalence and clinical outcomes. These are important to assess owing to understanding the magnitude of the disease in a particular area and to initiate appropriate intervention.
Objective: The objective of the present study was to investigate the prevalence and outcomes of COVID-19 infection, and its associated sociodemographic factors among the population at the Shylet district in Bangladesh.
Methodology: This retrospective study was carried out in the Department of Microbiology at Sylhet MAG Osmani Medical College, Sylhet, Bangladesh from 4 April to 6 September 2020. Patient data collection was collected from different healthcare institutions located in Sylhet. Those patients attended the institutions to diagnose COVID-19 infection during the ongoing pandemic. Microsoft Excel and SPSS software was used for the data analysis. P< 0.05 at a 95.0% confidence interval was specified as the standard of significance.
Results: Participants aged more than 60 years old showed the highest rate of death (8.3%) and the lowest proportion of cure (91.7%). A significant association has been found in the COVID-19 infection outcome of the participants with their age, occupation, and place of treatment for infected people (p <0.001*). People aged 20 to 40 years, showed the highest odds of being infected with COVID-19 [OR: 4.685; CI: 1.25 - 17.51; p < 0.05]. Moreover, people taking treatment from private hospitals were significantly less likely [OR: 0.061; CI: 0.03 - 0.13; p < 0.001] to present COVID infection outcomes than those who were treated in public hospitals. Again, healthcare workers had the highest death rate (2.9%) than that of people from other professions.
Conclusion: In conclusion, elderly people are commonly died due to COVID-19 infection, which is related to the site of treatment as well as the occupation of the patients.
Bangladesh Journal of Infectious Diseases, June 2024;11(1):30-37
Öğretim programının uygulayıcıları ne kadar program okuryazarı?
Authors: Karaduman Betül
Published: September 2024

Formal eğitim bir amaç çerçevesinde şekillenir ve önceden hazırlanmış programlar aracılığıyla belli bir planlama ile yürütülür. Programların etkililiği çok büyük ölçüde uygulayıcıların bu konudaki donanımlarına ve yeterliklerine bağlıdır. Bu noktada, öğretim programlarının uygulayıcısı olan öğretmenlerin ve gelecekte uygulayıcısı olacak olan öğretmen adaylarının program okuryazarlık düzeyleri önem kazanmaktadır. Öğretim programı okuryazarlığı, öğretim programlarının uygulayıcıları olan öğretmenler ve öğretmen adaylarının bir öğretim programının amaçlarını, tasarımını, uygulanmasını ve değerlendirilmesini anlama yeteneklerini ifade eder. Bu bağlamda çalışmanın amacı; öğretim programlarının uygulayıcılarının öğretim programı okuryazarlık düzeylerinin ve “Fen Öğretim Programları” dersinin öğretmen adaylarının program okuryazarlığına etkisinin belirlenmesidir. Çalışmada betimsel tarama yöntemi kullanılmıştır. Verilerin toplanmasında “Öğretim Programı Okuryazarlık Ölçeği” nden faydalanılmıştır. Verilerin analizinde eşleştirilmiş örneklemler için t testi ve tek yönlü varyans analizinden faydalanılmıştır. Çalışmanın sonucunda, 4. Sınıfa devam eden öğretmen adaylarının program okuryazarlık düzeylerinin öğretmenlerden ve 2. Sınıfa devam eden öğretmen adaylarından daha yüksek olduğu görülmüştür. Ayrıca “Fen Öğretim programları” dersini alan öğretmen adaylarının ders sonrasında öğretim programı okuryazarlık düzeylerinin anlamlı bir şekilde arttığı sonucuna ulaşılmıştır.
An Investigation of Universities' Public Relations and Corporate Twitter Use (Covid- 19 Process)
Authors: Görgülü Deniz , Erçetin Şefika Şule
Published: September 2024

This study aimed to investigate the impact of corporate Twitter use on university public relations. The research employed a mixed design, using both quantitative and qualitative methods. The quantitative aspect utilized a cross-sectional survey model, while the qualitative part involved a case study design. The study included 1245 postgraduate students selected through stratified sampling. For the qualitative part, the sample consisted of one state and one foundation university from each region with the highest number of Twitter followers, identified using the purposive sampling method. The findings indicated that postgraduate students generally perceived university public relations to be at an acceptable level. Moreover, foundation university students held a more positive view of their institutions' public relations. Analyzing universities' corporate Twitter use revealed that Atatürk University had the highest number of posts. Furthermore, the analysis showed that universities mainly shared content to promote other public relations tools. The analysis also revealed a similar number of tweets from universities before and after the pandemic.
Reconstruction of Pre-Service EFL Teachers’ Conceptual Understandings About SLA and Language Pedagogy Through Experiential Tasks
Authors: Söğüt Sibel
Published: September 2024

The course on Second Language Acquisition (SLA), which is a component of language teacher education programs, includes consciousness-raising and experiential activities that prepare pre-service teachers for the profession. Pre-service English teachers need to have a well-grounded understanding of how SLA relates to language teaching to comprehend how SLA theories contribute to their language teaching processes. To address this need, this study examined the effects of an SLA course on pre-service teachers’ conceptual changes and beliefs regarding language pedagogy. To identify the extent of their conceptual changes and awareness, a language-learning autobiography project was used to decode multifaceted processes and elements of their first and second language acquisition. Pre-service teachers were asked to describe their language acquisition processes before taking the SLA course and then to revise their autobiographies in line with the theories and concepts covered in the SLA course. Content analysis was used to compare the two versions gathered from 54 pre-service teachers, and emerging themes and concepts in both forms were identified. The overall findings indicate that their initial versions are limited to basic linguistic descriptions, whereas they have gained a rich repertoire of grounds and connections and an understanding of the relevance of SLA to language pedagogy. Relatedly, instructional implications were suggested to facilitate their professional stance and understanding of the relationship between SLA and language pedagogy.
Sustainable Investments: Return and Risk
Authors: Lashgari Malek
Published: September 2024

Empirical evidence shows that investors and institutions are interested in socially responsible and sustainable investments due to either their values for making a positive impact on the society or because of the perceived rewards and less downside risk of such investments. In addition, a country’s rule of law, culture, values and norms help promote socially desirable and sustainable investments. Furthermore, money flow appears to be larger for firms with high environmental, social and governance scores. Studies generally show a lower cost of capital for socially responsive firms and perhaps a better corporate value. This is due, in part, to lower risk premium demanded by investors. A survey shows that potential investors rank the environment the highest, 79 percent, followed by products with a rank of 48 percent, among other socially desired goals.
Behaviour of ionic herbicides in different forestry soils derived from volcanic ash
Authors: Alister Claudio , Becerra Kevin , Vega Gerson , Araya Manuel , Zapata Alvaro , Kogan Marcelo
Published: September 2024

Background: Weed control has been one of the most significant factors in forest establishment practices that can improve biomass production, and herbicides represent the most effective and convenient way to control weeds. The environmental concern about herbicides in this industry is because the herbicide-treated area is often located near water reservoirs or areas where rivers and creeks originate. This study aimed to determine the adsorption and degradation behaviours of seven ionic herbicides used in forestry production in five Chilean forestry soils and their relation to the leaching and to generate information to validate environmental predictive models.
Methods: Adsorption and degradation of ionisable herbicides such as simazine, terbuthylazine, hexazinone, metsulfuron-methyl, indaziflam, flazasulfuron and glyphosate were studied in Andisol, Ultisol, Inceptisol, Entisol and Alfisol forestry soils, to be related to their leaching in 100-cm high and 11-cm diameter soil disturbed lysimeters. Herbicides were quantified using high-pressure liquid chromatography and gas chromatography. Relationships between soil physicochemical properties, herbicide adsorption and degradation, and herbicide leaching were determined.
Results: In decreasing order, the herbicides were mobile in Entisol>Alfisol>Ultisol>Inceptisol>Andisol soils. On the other hand, the more leachable herbicides, from high to low, were: hexazinone, metsulfuron-methyl, simazine, glyphosate, terbuthylazine, flazasulfuron and indaziflam. The last two herbicides were not detected below 60 cm soil depth. In general, the maximum soil depth herbicide reached and the percentage mass leached up to 90 cm soil depth were inversely related to soil adsorption (1/Kd), soil porosity, humidity, silt, aluminium, and calcium soil content. Herbicide degradations were generally faster than referential published values.
Conclusions: The environmental coefficients of ionic herbicides were more related to soil properties than their physicochemical properties. Persistence of herbicides in soil was smaller than that commonly reported in other studies or international databases and soil adsorption averages were generally higher than international reference values. The stronger relationship between ionic herbicide behaviour and forestry soil properties endorses the requirement to determine the environmental herbicides parameters in situ, avoiding using parameters estimated in other soils.
Note the Nodes
Authors:   , Terwisscha van Scheltinga Cecilia Elisabeth Johanna
Published: September 2024

Rhabdomyosarcoma (RMS) is the most common soft tissue tumor in children. It is a high-grade soft tissue tumor of mesenchymal origin. Lymph node metastases negatively affect prognosis and are relatively common in primary tumors of the extremities. This dissertation focusses on staging of these patients, its influence on treatment and prognosis, and the possibility of improving staging.
In recent years, 18F-FDG-PET/CT is increasingly performed as an adjunct to regular imaging (ultrasound, MRI, CT). In patients staged with an 18F-FDG-PET/CT, lymph node metastases were found more frequently (probably due to detection of lymph nodes at less common localizations such as in transit metastases (ITM)). A biopsy of the lymph nodes changed the lymph node stage in 15% of patients.
ITM are metastases located between the primary tumor and the first regional lymph node station. In RMS distal to the knee and elbow, ITM were identified in 17.5% of patients, in over 50% of N1 patients. Patients with both ITM and proximal regional nodal involvement had significantly worse prognosis than patients with lymph nodes in 1 lymph node station. Thus, it is important for surgeons to know which lymph nodes to biopsy.
In Chapters 5 and 6, we showed that the sentinel lymph node procedure is a feasible and accurate technique in RMS, and the pilot study using ICG as a tracer instead of patent blue showed promising results (Chapter 7). Because of small patient numbers, international collaboration is needed to draw conclusions from the available data. Chapter 8 is a consensus document on behalf of the International Soft Tissue Sarcoma Consortium (INSTRuCT) to create a standard for diagnosis, staging and treatment of patients with extremity RMS. This will allow comparison of data for further research in the future.
Cytomegalovirus/Herpes Simplex Virus Co-infection with Associated Oesophageal Stricture in a Young Immunocompetent Woman: A Case Report and Literature Review
Authors: Godfrey David , Patwardhan Ashwin
Published: September 2024

The authors report the first case of oesophageal cytomegalovirus (CMV) and herpes simplex virus (HSV) co-infection in an immunocompetent patient with an associated oesophagal stricture. The authors also review the literature on oesophageal strictures related to CMV and/or HSV oesophagitis. CMV and HSV co-infection is well documented in immunocompromised patients. The oesophagus is one of several organs known to harbour co-infection. To the knowledge of the authors’, its association with an oesophageal stricture is rare and has only been noted in patients with HIV. The authors report a case of an immunocompetent 40-year-old woman with a past history of iron deficiency anaemia and idiopathic hypertension who presented with dysphagia. Investigations revealed a circumferential oesophageal stricture, with biopsies positive for CMV and HSV. This patient was HIV-negative and had no evidence of immunodeficiency. The patient was treated successfully with valganciclovir and multiple endoscopic oesophageal dilatations. This presentation in an immunocompetent patient has not been described in the literature to the authors’ knowledge and represents a valid differential diagnosis to be recognised in clinical practice.
Effect of Harmonic Distortions on Energy Measurement by Smart Energy Meter: An Experimental Analysis
Authors: Chandel Priyamvada , Solanki Monika , Khare Anula
Published: September 2024

This study presents a comprehensive investigation into the effects of harmonic distortions on the energy measurement accuracy of smart electricity meters. Given the prevalence of non-linear loads in modern electrical systems, understanding the impact of harmonics on energy metering is crucial for ensuring accurate billing and system reliability. In the present work, experiments have been conducted on smart energy meters using, programmable power sources, to create a range of harmonic conditions and measurement of meter accuracy under the presence of harmonics disorders with two reference meters carried out for validation of the results. The experimental procedure involved generating pure sine waves and introducing various harmonics (3rd, 5th, 7th, 11th, etc.) in the supply system subsequently, measuring the resultant energy with the smart meters. Comparative analyses were performed against true RMS readings to evaluate the meters’ accuracy under distorted waveforms. The results demonstrate a significant deviation in the meter readings with increasing harmonic frequency, amplitude, and phase angle underscoring the susceptibility of metering technology to harmonic distortion.
Performance of Phasor Measurement Units under Harmonic Influences
Authors: Kaliappan P. , Sudha S.
Published: September 2024

The performance of Phasor Measurement Units (PMUs) is essential and must ensure accuracy before installation in the substation. In the field, various interference conditions would occur in the power systems and were tested as per IEC/IEEE 60255.118.1:2018. Three number of PMUs from different manufacturers was configured for the M-class and P-class requirements. They were tested for two interference condition scenarios. The first case injected single harmonics with the input to test the impacts on accuracy. The second scenario was considered for inter-harmonics and checked the accuracy of PMUs. This will be useful in selecting high-quality PMUs, to obtain the most precise and dependable measurements under real-time power system operating conditions, the testing procedures, findings, and analysis are presented in this paper.
ÇOCUKLARDA YETKİNLİĞİ GELİŞTİRMENİN PSİKOLOJİK ÖZELİKLERİ ÖLÇEĞİNİN TÜRKÇE’YE UYARLANMASI: GEÇERLİK VE GÜVENİRLİK ÇALIŞMASI
Authors: Görgülü Recep , Çetin Hacer , Şenel Ender , Oruç Hilal , Engin Merve Begüm
Published: September 2024

Bu çalışmanın amacı ‘’Çocuklarda Yetkinliği Geliştirmenin Psikolojik Özellikleri Ölçeğinin (Ç-YGPÖÖ) Türkçe versiyonunun psikometrik özelliklerini spor yapan çocuklarda incelemektir. Laureys ve arkadaşları (2021) tarafından geliştirilen ölçek, sırasıyla performans endişeleri, sosyal destek, imgeleme ve aktif hazırlık, başarısızlığı yönelik olumsuz tepki ile öz-kontrol ve yönetim olmak üzere toplam 5 alt boyut ve 51 maddeden oluşmaktadır. Çalışmaya yaşları 7 ile 13 (Ortyaş=11.75) arasında olan ve 13 farklı (6 takım; 7 bireysel) spor dalında yarışan 287 (167 erkek; 120 kız) çocuk katılımcı dahil edilmiştir. Verilerin analizinde JASP 0.17.1 paket programı kullanılmıştır. Ölçme aracının uyum indekslerinin hesaplanması için Doğrulayıcı Faktör Analizi kullanılmıştır. Veriler normal dağılım göstermediğinde modellerin uyum indekslerini hesaplamada DWLS yöntemi maksimum olabilirlik (ML) yönteminden daha doğru sonuçlar vermektedir. 5 faktörlü modelin uyum indekslerini hesaplamak için CFI, TLI, RMSEA ve SRMR değerleri dikkate alınmıştır. Analizler, modelin mükemmel uyuma sahip olduğunu göstermiştir [χ2=1815,274, df=1201, χ2/df=1,51, CFI=0,94, TLI=0,94, RMSEA=0,04 (95%CI:0,03-0,04), SRMR=0,07]. Analiz sonuçları, Ç-YGPÖÖ’nin Türkçe formunun 7-13 yaş arası spor yapan çocukların zihinsel özelliklerinin değerlendirmesinde geçerli ve güvenilir bir ölçüm aracı olduğunu göstermektedir.
Engineered and hybrid human megakaryocytic extracellular vesicles for targeted non-viral cargo delivery to hematopoietic (blood) stem and progenitor cells
Authors: Das Samik , Thompson Will , Papoutsakis Eleftherios Terry
Published: September 2024

Native and engineered extracellular vesicles generated from human megakaryocytes (huMkEVs) or from the human megakaryocytic cell line CHRF (CHEVs) interact with tropism delivering their cargo to both human and murine hematopoietic stem and progenitor cells (HSPCs). To develop non-viral delivery vectors to HSPCs based on MkEVs, we first confirmed, using NOD-scid IL2Rγnull (NSG™) mice, the targeting potential of the large EVs, enriched in microparticles (huMkMPs), chosen for their large cargo capacity. 24 h post intravenous infusion into NSG mice, huMkEVs induced a nearly 50% increase in murine platelet counts. PKH26-labeled huMkEVs or CHEVs localized to the HSPC-rich bone marrow preferentially interacting with murine HSPCs, thus confirming their receptor-mediated tropism for NSG HSPCs, and their potential to treat thromobocytopenias. We explored this tropism to functionally deliver synthetic cargo, notably plasmid DNA coding for a fluorescent reporter, to NSG HSPCs both in vitro and in vivo. We loaded huMkEVs with plasmid DNA either through electroporation or by generating hybrid particles with preloaded liposomes. Both methods facilitated successful functional targeted delivery of pDNA, as tissue weight-normalized fluorescence intensity of the expressed fluorescent reporter was significantly higher in bone marrow than other tissues. Furthermore, the fraction of fluorescent CD117+ HSPCs was nearly 19-fold higher than other cell types within the bone marrow 72-h following administration of the hybrid particles, further supporting that HSPC tropism is retained when using hybrid particles. These data demonstrate the potential of these EVs as a non-viral, HSPC-specific cargo vehicle for gene therapy applications to treat hematological diseases.
Numerical calibration for fracture parameters of three-point bending semi-circular specimens
Authors: Wang Jun , Wang Haoyi , Yao Zongquan , Li Qi , Wu Chaodong
Published: September 2024

This study aims to refine the fracture characterization of three-point bending semi-circular specimens used in rock fracture toughness assessments. The primary objective is to improve the accuracy of such evaluations by developing numerical simulations of specimens with pre-engineered cracks of varying geometries. Numerical simulations were conducted using the finite element method. The interaction integral method was employed to quantify the stress intensity factors (SIFs) and T-stress at crack tips. Initially, the model’s accuracy was validated by replicating stress singularities at crack tips in a benchmark circular disk with a central straight crack. Following validation, dimensionless fracture parameters specific to the three-point bending semi-circular specimens were calibrated. The numerical results demonstrate that the dimensionless stress intensity factor (YI) increases with both the relative crack length (a/R) and the spacing between support points. Notably, for relative crack lengths a/R ≤ 0.5, the dimensionless T-stress assumes negative values, initially decreasing and then increasing as the relative crack length increases. The findings of this study provide valuable insights into the fracture behavior of three-point bending semi-circular specimens with pre-engineered cracks. Based on the observed trends in the dimensionless fracture parameters, it is recommended that relative crack lengths within the range of 0.2–0.6 be used to maintain the accuracy of rock fracture toughness tests. The finite element method used in this study serves as a robust tool for calibrating fracture parameters, thereby laying a strong foundation for the application of these specimens in rock fracture toughness evaluations.
Diurnal variation of convective precipitation during the flood season in Fujian Province, China
Authors: Wang Qianyun , Tang Junlin , Zhang Yuxuan , Li Yanan
Published: September 2024

Utilizing hourly observational data from automatic weather stations across Fujian Province from 2008 to 2020, this study defined and classified concepts and thresholds for convective precipitation, short-duration convective precipitation, long-duration convective precipitation, localized heavy precipitation, and widespread heavy precipitation. We explored the fundamental diurnal climatic characteristics of convective precipitation during the flood season in Fujian Province’s complex terrain. The results indicate the following. 1) Convective precipitation during the flood season exhibits distinct diurnal variation, with a significant spatial distribution along mountainous and coastal terrains. 2) The frequency of precipitation during the pre-flood season is higher and its intensity is lower than in the post-flood season. Due to differing primary weather systems influencing each period, resulting in substantial differences in the spatial distribution of precipitation frequency and intensity. 3) Both short-duration and localized precipitation show pronounced afternoon peaks in their diurnal patterns, predominantly occurring on windward slopes, highlighting mechanisms of afternoon moist convection and orographic lifting, whereas long-duration and widespread precipitation lack diurnal variation, reflecting the influence of large-scale circulation. These results will help forecasters better understand the unique precipitation characteristics of Fujian Province.
Cell type specification and diversity in subpallial organoids
Authors: Pavon Narciso , Sun Yubing , Pak ChangHui
Published: September 2024

Neural organoids have emerged as valuable tools for studying the developing brain, sparking enthusiasm and driving their adoption in disease modeling, drug screening, and investigating fetal neural development. The increasing popularity of neural organoids as models has led to a wide range of methodologies aimed at continuous improvement and refinement. Consequently, research groups often improve and reconfigure protocols to create region-specific organoids, resulting in diverse phenotypes, including variations in morphology, gene expression, and cell populations. While these improvements are exciting, routine adoptions of such modifications and protocols in the research laboratories are often challenging due to the reiterative empirical testing necessary to validate the cell types generated. To address this challenge, we systematically compare the similarities and differences that exist across published protocols that generates subpallial-specific organoids to date. In this review, we focus specifically on exploring the production of major GABAergic neuronal subtypes, especially Medium Spiny Neurons (MSNs) and Interneurons (INs), from multiple subpallial organoid protocols. Importantly, we look to evaluate the cell type diversity and the molecular pathways manipulated to generate them, thus broadening our understanding of the existing subpallial organoids as well as assessing the in vitro applicability of specific patterning factors. Lastly, we discuss the current challenges and outlook on the improved patterning of region-specific neural organoids. Given the critical roles MSN and IN dysfunction play in neurological disorders, comprehending the GABAergic neurons generated by neural organoids will undoubtedly facilitate clinical translation.