bluuebunny/crossref_metadata_2025 huggingface dataset:
Preparation of Polyvinyl Alcohol–Chitosan Nanocellulose–Biochar Nanosilver Composite Hydrogel and Its Antibacterial Property and Dye Removal Capacity
Authors: Xie Licheng , Zhang Zhichao , He Yucai , Jiang Yan
Published: October 2024

In this research, silver-loaded biochar (C-Ag) was acquired from a waste fish scale, and nanocellulose (CNF) was prepared from the waste wheat stalk. Then C-Ag was loaded into chitosan-polyvinyl alcohol hydrogel (CTS-PVA) with CNC as a reinforcement agent, and a novel nanocomposite material was acquired, which could be efficiently applied for antibacterial and dye removal. By plate diffusion analysis, the inhibition areas of C-Ag-CTS-PVA-CNF (C/CTS/PVA/CNF) hydrogel against E. coli ATCC25922, S. aureus ATCC6538, and P. aeruginosa ATCC9027 could reach 22.5 mm, 22.0 mm, and 24.0 mm, respectively. It was found that the antibacterial rate was 100% in the water antibacterial experiment for 2 h, and the antibacterial activity was more than 90% within 35 days after preparation, and the antibacterial rate was more than 90% after repeated antibacterial tests for five times. Through swelling, water adsorption, water loss rate, and water content tests, the hydrogel manifested good moisturizing properties and could effectually block the loss of water and improve the stability of the C/CTS/PVA/CNF hydrogel. The pseudo-first-order and pseudo-second-order models were built, and the adsorption capacity of hydrogel to dye was analyzed, and the dye removal was more consistent with the pseudo-first-order kinetic model. The best removal effect for Congo red was 96.3 mg/g. The C/CTS/PVA/CNF hydrogel had a remarkable removal efficacy on Malachite green, Methyl orange, Congo red, and Methylene blue. As a result, the C/CTS/PVA/CNF hydrogels had robust antibacterial properties and reusability. In addition, the present research developed a facile strategy for effectual dyes removal from the aqueous medium.
Multi-Task Learning Network-Based Prediction of Hydraulic Fracturing Effects in Horizontal Wells Within the Ordos Yanchang Formation Tight Reservoir
Authors: Fan Pingtian , Yuan Hai , Song Xiankun , Yang Xiaowen , Song Zhenyu , Li Ping , Lin Ziyu , Gan Maozong , Liu Yuetian
Published: October 2024

Accurate prediction of fracture volume and morphology in horizontal wells is essential for optimizing reservoir development. Traditional methods struggle to capture the intricate relationships between fracturing effects, geological variables, and operational factors, leading to reduced prediction accuracy. To address these limitations, this paper introduces a multi-task prediction model designed to forecast fracturing outcomes. The model is based on a comprehensive dataset derived from fracturing simulations within the Long 4 + 5 and Long 6 reservoirs, incorporating both operational and geological factors. Pearson correlation analysis was conducted to assess the relationships between these factors, ranking them according to their influence on fracturing performance. The results reveal that operational variables predominantly affect Stimulated Reservoir Volume (SRV), while geological variables exert a stronger influence on fracture morphology. Key operational parameters impacting fracturing performance include fracturing fluid volume, total fluid volume, pre-fluid volume, construction displacement, fracturing fluid viscosity, and sand ratio. Geological factors affecting fracture morphology include vertical stress, minimum horizontal principal stress, maximum horizontal principal stress, and layer thickness. A multi-task prediction model was developed using random forest (RF) and particle swarm optimization (PSO) methodologies. The model independently predicts SRV and fracture morphology, achieving an R2 value of 0.981 for fracture volume predictions, with an average error reduced to 1.644%. Additionally, the model’s fracture morphology classification accuracy reaches 93.36%, outperforming alternative models and demonstrating strong predictive capabilities. This model offers a valuable tool for improving the precision of fracturing effect predictions, making it a critical asset for reservoir development optimization.
Study on Near-Wellbore Fracture Initiation and Propagation with Fixed-Plane Perforation in Horizontal Well for Unconventional Reservoirs
Authors: Yan Maosen , Ai Chi , Zhang Jun , Lu Wenjing , Gao Rui
Published: October 2024

At present, in the process of volume fracturing for a tight reservoir, employing the spiral perforation method to induce the fracture propagation direction would always obtain an unsatisfactory effect, which causes the deflection and tortuosity of hydraulic fractures. Therefore, researchers presented the fixed-plane perforation method for enhancing the effect on volume fracturing. In this paper, the three-dimensional discrete lattice method is used to study the initiation and propagation law of horizontal well fixed-plane perforation in unconventional reservoirs under two different stress states. The results show that it is more suitable to use fixed-plane perforation for reducing the initiation pressure. When employing the fixed-plane perforation method, fracture always initiates in the perforation plane, presents as an irregular fan-shaped failure surface, and then propagates along the wellbore. The initiation pressure is highly correlated to the phasing angle between adjacent perforations under different conditions, and the rate of increase in the initiation pressure decreases by around 1.59~6.38% when the phasing angle reaches 30°. The fracturing pressure is inversely correlated with the diameter and tunnel length of the perforations and the horizontal stress difference. When the diameter increases to 17 mm, the tunnel length increases to 25 cm or the horizontal stress difference reaches 8 MPa. These results reveal an insignificant effect of the above parameters on the initiation pressure.
The Formation Mechanism of Residual Oil and Methods of Enhanced Oil Recovery in a Fractured Low-Permeability Metamorphic Rock Reservoir in Bohai Bay
Authors: Gao Jianchong , Wang Xianming , Zhang Dingxue , Wang Jie
Published: October 2024

The oil reservoirs of the metamorphic rocks in Bohai Bay have geological characteristics such as low matrix porosity and permeability, developed natural microfractures, which result in the injection water rapidly advancing along fractures, a fast increase in the water content, and difficulties in extracting the remaining oil. In order to reveal water channeling and the residual oil formation mechanisms in fractured low-permeability reservoirs and solve the water channeling problem, we first analyzed the reservoir development status, then studied the formation mechanism of residual oil using a microfluidic chip device, and formed a method of hierarchical control to effectively control the water channeling problem of fractured reservoirs and maximize the displacement of residual oil. The results show that (1) Due to the low permeability of the reservoir matrix, a large amount of injected water flows along the fracture channel, which leads to the long-term high water cut of some oil wells and the retention of a large amount of crude oil in the matrix. (2) The results of microfluidic experiments show that the distribution of residual oil after water flooding mainly includes five types: blind end of the pore throat, columnar, cluster, flake and film, and residual oil. Among them, sheet-like and clustered residual oil are dominant, accounting for 75~85% and 10~13%, respectively. (3) Based on the characteristics of fracture development in buried-hill reservoirs, a hierarchical control technology of “gel particle + liquid crosslinked gel system” is established. The field application effect predicted that the input–output ratio was 1:3. This study provides a reference for the comprehensive treatment of water channeling in the same type of offshore fractured low-permeability metamorphic rock reservoirs.
An Evaluation of Biochar Derived from Agro-Industrial Waste as an Alternative Material for the Elimination of Pathogenic Load from Water
Authors: Delgado-Rebolledo Diana V. , Chica Edwin , Rubio-Clemente Ainhoa
Published: October 2024

The contamination of water bodies is becoming more frequent due to uncontrolled discharges into them, including those of domestic or industrial wastewater (WW) characterized by the presence of heavy metals, a high pathogenic load, pesticides, and pharmaceuticals, among other pollutants, which represent a risk to both humans and the health of the ecosystem. Consequently, conventional water treatment processes have been implemented. However, they are not efficient enough. In this regard, exploring and analyzing new alternatives and sustainable systems that efficiently degrade the different pollutants found in WW are required, and biochar can be considered as an attractive treatment option, since it is an adsorbent carbonaceous material that allows for the removal of several pollutants. The generation and use of biochar contribute to the promotion of the circular bioeconomy and the achievement of sustainable development goals by enhancing the reuse and recycling of agricultural and agro-industrial waste as raw material for its production. The objective of this work is to evaluate the utilization of biochar as an alternative material for the elimination of the pathogenic load in water.
The Paradox of “即 (Jí)” in Tiantai Buddhism
Authors: Zhang Yi , Li Yong
Published: October 2024

The character “即 (jí)” in Chinese shares the meaning of “is”, indicating an identity or equivalence between two concepts. In this framework, one might expect the antecedent and the consequent of “即” to be identical in meaning, or at least for a term with a positive connotation not to be paired with one of negative connotation. However, in Tiantai Buddhism, many core propositions follow the structure “x 即 y”, where x is negative and y is positive, or vice versa. This suggests an identity between opposites, creating a paradoxical feature in the system. This essay argues that the paradox within Tiantai Buddhism is a veridical paradox, as defined by Quine, meaning it can be resolved in various ways and does not reflect a genuine contradiction in reality. While Western Buddhist philosophers and logicians have focused primarily on the paradoxes in Nāgārjuna’s thought, this essay demonstrates that Chinese Tiantai Buddhism offers practical resolutions to these paradoxes. The paper first explicates the paradox by examining its roots in Buddhist history, then explores responses to it. Finally, different methods for resolving the paradox are compared and evaluated.
Εντροπη: Shame and Identity Formation in the Letters of Ignatius of Antioch
Authors: Chan Yi-Sang Patrick
Published: October 2024

Since the 1980s, biblical scholars have started to employ the framework of “honor and shame” to study the culture of the ancient Mediterranean region. However, this application of the social–scientific honor–shame model has led to “massive generalizations of ‘honor’ and ‘shame’”. In particular, when focusing on the concept of honor/shame rather than its lexemes, the social–scientific school ignores the nuanced nature of each Greek word group related to shame. By studying classical Greek literature, Douglas Cairns further points out a puzzling situation that the word group αἰδώς contains polarized meanings of both “to shame” and “to respect”. In this paper, we examine the puzzling double meanings of “to shame/to respect” by focusing on the use of the word group ἐντροπή in the letters of Ignatius of Antioch. This paper argues that the word group ἐντροπὴ serves a rhetorical purpose of protecting the church’s identity by rejecting beliefs/customs that are unacceptable to Christianity and promoting unity in the churches through obedience to church authorities. This paper also explores the fundamental epistemological issue of understanding emotion words in its ancient context. It provides a provisional definition for ἐντροπή, that it is a self-inhibitory emotion of sensitivity to one’s proper place in social interaction to protect one’s self-image.
The Pursuit for Cosmic Wisdom and ‘Promethean’ Leadership in the Pythagorean and Al-Fārābīan Political Philosophy
Authors: Theodosiadis Michail , Vavouras Elias
Published: October 2024

This study reflects on aspects of the Pythagorean political philosophy and compares them to those of Abu Nasr Muhammad al-Fārābī’s thought. Both share a key assumption: excellent rulers must be political scientists who seek divine guidance to ensure the prevalence of reason over passions in public life while reconciling society with the harmony and wisdom of the cosmos. By imitating God’s perfection and incorporating divine wisdom into governance, virtuous rulers promote felicity, prosperity and peace within a city. We highlight al-Fārābī’s emphasis on the role of religion in enabling citizens to internalize the wisdom of the cosmos, thereby minimising the need for coercion in the pursuit of order and social concord. In addition, the populace leverages the superior knowledge of each governor while observing their behaviour. Thus, the people have a share in the exercise of political power. This insistence on the involvement of the populace in politics aligns with the concept of ‘political Prometheism’.
Morocco, a New Era of Robotic Surgery
Authors: El anzaoui Jihad , Mrabti Mohammed , Elbahri Abdessamad , Alami Mohamed , Ameur Ahmed
Published: October 2024

Robotic surgery has been widely adopted over the past two decades, because it offers significant advantages such as minimally invasive access, precision, ergonomic design, and enhanced safety [...]
Principal–Teacher Relationships Under the Pressure of the COVID-19 Pandemic: Critical Factors and Implications for School Leadership During Crises
Authors: Spyropoulou Eleftheria , Koutroukis Theodore
Published: October 2024

This paper aims to present the views of Greek school principals on whether and how working amid the crisis caused by the COVID-19 pandemic affected principal–teacher relationships. It mainly focuses on the factors that contributed to the quality and course of these relationships. A qualitative methodology was adopted. Data were collected from 57 principals of public primary and secondary schools who answered the open-ended questions of an online questionnaire. Written answers were analyzed using the method of thematic analysis. The analysis revealed that, given the adverse working conditions, principal–teacher relationships were affected to varying degrees and in different ways in each school unit. For forty-seven percent of principals, the relationships remained unaffected; for forty percent, the relationships worsened; and for thirteen percent, they became stronger. It was found that teacher-related factors (attitude towards increased duties/obligations and ability to manage stress and fear), as well as work climate-related factors (communication and interaction, togetherness, and pre-existing work climate) contributed to the course of principal–teacher relations amid the pandemic. The findings provide practical and theoretical implications for school leadership and human resources management in a crisis context.
On the Particle Content of Moyal-Higher-Spin Theory
Authors: Cvitan Maro , Dominis Prester Predrag , Giaccari Stefano Gregorio , Paulišić Mateo , Vuković Ivan
Published: October 2024

The Moyal-Higher-Spin (MHS) formalism, involving fields dependent on spacetime and auxiliary coordinates, is an approach to studying higher-spin (HS)-like models. To determine the particle content of the MHS model of the Yang–Mills type, we calculate the quartic Casimir operator for on-shell MHS fields, finding it to be generally non-vanishing, indicative of infinite/continuous spin degrees of freedom. We propose an on-shell basis for these infinite/continuous spin states. Additionally, we analyse the content of a massive MHS model.
Botulinum Toxin Treatment of Psoriasis—A Comprehensive Review
Authors: Ghaseminejad-Bandpey Ali , Etemadmoghadam Shahroo , Jabbari Bahman
Published: October 2024

A literature search on the subject of botulinum toxin treatment in psoriasis found 15 relevant articles, 11 on human subjects and 4 on animal studies. Of the human data, eight were clinical trials and three were single case reports. Seven out of eight clinical trials, all open-label, reported improvement in psoriasis following intradermal or subcutaneous botulinum toxin injections. One double-blind, placebo-controlled study, which used a smaller dose than the open-label studies, did not note a healing effect. Animal studies have shown that injection of botulinum toxins in the skin heals psoriatic skin lesions and can reduce the level of interleukins (ILs) and cytokines as well as inflammatory cells in psoriatic plaques. There is a need for controlled, blinded studies conducted in larger numbers of patients with doses that have shown promise in open-label studies.
Beyond Permanent Residences: Measuring Place Attachment in Tempo-Local Housing Arrangements
Authors: Wächter Leonie
Published: October 2024

Current societal shifts, including increased mobility, advances in information technologies, and diverse lifestyles, are driving postmodern housing arrangements that prioritize mobility and flexibility. The traditional view of housing as fixed and stable is evolving to encompass temporary forms, including multi-locality, which are often underestimated due to measurement challenges. Recognizing and integrating the potential of transient populations into urban societies is crucial to enhancing community cohesion and reducing social fragmentation. Therefore, the development of rootedness, emotional connection, and spatial identity should be analyzed in the context of temporary housing practices. Data collected through a representative survey in two major German urban regions in 2023 enable the validation of a four-dimensional place attachment scale, which includes the dimensions of place identity, place dependence, ambient bonding, and social bonding. Each dimension includes distinct elements of place-making constructions. The classification of four tempo-local housing types serves as the foundation for measuring how the temporal and spatial structure of housing arrangements influences emotional attachment to one’s place of residence. Interestingly, spatial mobility, when paired with temporal stability in each location, can cultivate deep connections, revealing an often-overlooked potential within this group. The results emphasize the significance of incorporating spatio-temporal dimensions of housing to foster inclusive, comprehensive, and diverse urban development.
Integration of Circular Economy and Urban Metabolism for a Resilient Waste-Based Sustainable Urban Environment
Authors: Ragazou Konstantina , Zournatzidou Georgia , Sklavos George , Sariannidis Nikolaos
Published: October 2024

An unsustainable rate of resource production and consumption is evident in urban environments. The absence of innovative approaches in conjunction with the exponential urbanization and expansion of the global population will inevitably result in substantial environmental consequences. There are two emerging alternatives: circular economy (CE) and urban metabolism (UM). The integration of these principles into novel methodology casts doubt on the linear model of contemporary economic and urban systems, which includes extraction, production, utilization, and disposal. In the development of a distinctive urban framework known as circular urban metabolism, the current study has illustrated the application of these principles. We design this study to motivate urban planners and decision-makers to investigate, develop, and supervise ecologically sustainable cities. Scholars from a variety of academic disciplines, intrigued by the intricacies of urban planning, design, and administration, can foster interdisciplinary collaboration in the circular urban metabolism (CUM) region. To address the research question, we implemented a bibliometric analysis, which involved the examination of 627 pertinent research papers, utilizing the R (R 3.6.0+) statistical programming language. The results emphasize the fundamental characteristics and significance of CUM in the management of refuse. In addition, the findings underscore the importance of creating a novel framework that incorporates the principles of urban political ecology, CUM, sustainability, and the novel dimension of waste metabolism. It is the goal of this framework to emphasize the significance of recycling in the informal sector as a waste management strategy in low- and medium-income countries (LMICs).
Correction: Rothen et al. Preclinical Evaluation of Novel Sterically Optimized VLP-Based Vaccines against All Four DENV Serotypes. Vaccines 2024, 12, 874
Authors: Rothen Dominik A. , Dutta Sudip Kumar , Krenger Pascal S. , Vogt Anne-Cathrine S. , Lieknina Ilva , Sobczak Jan M. , Osterhaus Albert D. M. E. , Mohsen Mona O. , Vogel Monique , Martina Byron , Tars Kaspars , Bachmann Martin F.
Published: October 2024

The authors would like to make the following corrections to this published paper [...]
Pérola de esmalte em dentes anteriores: relato de caso afetando dois caninos superiores em adolescente
Authors: Campos Maria Inês da Cruz , Silva Mauro Henrique Chagas e
Published: October 2024

Introdução: Entende-se como pérola de esmalte a formação ectópica desse tecido em locais de bifurcação de raízes, sendo incomum sua presença em dentes uni radiculares. Objetivo: Apresentar o caso de pérolas de esmalte nos dentes caninos, 13 e 23, num adolescente de 16 anos de idade. Relato de Caso: Descrição do diagnóstico e tratamento de dois dentes que apresentavam pérolas de esmalte em um adolescente. Este foi submetido, após o exame clínico, avaliação radiográfica e da tomografia computadorizada de feixe cônico (TCFC), a tratamento endodôntico do dente 13 e acompanhamento do dente 23. Devido à presença de sintomatologia dolorosa e mudança na coloração da gengiva vestibular, foi necessária a realização do tratamento endodôntico e acompanhamento clínico e radiográfico dos caninos que apresentavam as pérolas de esmalte ectópicas. Conclusão: Apesar das pérolas de esmalte serem relatadas mais comumente em dentes birradiculares ou trirradiculares, este trabalho apresenta um caso de pérolas de esmalte em caninos superiores que são dentes unirradiculares, em um único paciente.
Jogo de Tabuleiro - Missão XY
Authors: Santos Bomfim Bruna , de Freitas Silva Flávia , Soares de Souza Gabriel , Salles Dias Góes Isabella , Barreto Pereira Jaqueline , Silva Pimenta Letícia , Costanzo Paola
Published: October 2024

Um jogo de tabuleiro sobre as diversas patologias do sistema genital masculino.
PHÂN LẬP VÀ ĐÁNH GIÁ TIỀM NĂNG PROBIOTIC CÁC CHỦNG Bacillus subtilis TẠI CÁC TỈNH, THÀNH ĐỒNG BẰNG SÔNG CỬU LONG
Authors: Lý Thị Thu Lan  , Nguyễn Thị Anh Thư  , Nguyễn Thị Mỹ Hằng  , Võ Nguyễn Nghĩa
Published: October 2024

ISOLATION AND EVALUATION OF POTENTIAL PROBIOTIC OF Bacillus subtilis IN THE MEKONG DELTA PROVINCES, VIETNAM
Tóm tắt: Thu thập 60 mẫu ruột gà từ các trại gà ở thành phố Cần Thơ, tỉnh Trà Vinh, và tỉnh An Giang, nghiên cứu ghi nhận được 22 chủng có khả năng là vi khuẩn Bacillus spp. với các đặc điểm như vi khuẩn hình que, khuẩn lạc trắng đục, tròn lồi, và là vi khuẩn gram dương. Các chủng vi khuẩn được tìm thấy (22 chủng) tiếp tục được khảo sát về khả năng di động và xin bào tử. Kết quả lựa chọn được 5/22 chủng để tiến hành chạy PCR và giải trình tự gen. Các vi khuẩn nghi ngờ được xác định bằng kĩ thuật giải mã trình tự gen 16S rRNA. Hai khuẩn tìm được là Bacillus subtilis, đặc tính probiotic của hai chủng TV12 và AG10 được khảo sát các đặc điểm bao gồm: khả năng bám dính, sức chịu đựng được trong môi trường pH và muối mật của hệ tiêu hoá, mức độ tự bám dính. Tại pH 2 và 3, hai vi khuẩn có tỉ lệ sống khá cao là 56,07% (TV12), 55,06% (AG10) và duy trì tỉ lệ sống trong suốt 180 phút khảo sát ở nồng độ muối mật 0,3%. Về mức độ tự bám dính, khả năng liên kết của hai chủng tăng gấp đôi sau 5 giờ thử thách ở nhiệt độ tiêu chuẩn.
Abstract: The study was conducted on 60 chicken intestine samples collected from chicken farms in Can Tho City, Tra Vinh Province, and  An Giang Province. The results obtained a total of 22 potential Bacillus spp. with cultural characteristics such as circular colonies, fuzzy white, round, rod-shaped bacteria, and gram-positive. These bacterial strains (22 strains) were further examined for motility and spore formation capabilities. Five out of the 22 strains were selected for PCR and gene sequencing. Suspected bacteria were identified using 16S rRNA gene sequencing. After collecting the Bacillus subtilis, the probiotic properties of the two strains TV12 and AG10 were evaluated with criteria including the tolerance of acid bile salts (pH and bile salts), and aggregation ability. The study recorded that the two bacterial strains had quite high survival rates of 56.07% (TV12) and 55.06% (AG10), respectively at pH 2 and 3, and maintained survival rates during 180 minutes at 0.3% bile salt concentration. Regarding aggregation ability and high temperature doubled after 5 hours of incubation at standard temperature.
NGHIÊN CỨU TỔNG HỢP NANO BẠC MANG ĐẶC TÍNH KHÁNG KHUẨN VÀ TIỀM NĂNG ỨNG DỤNG TRONG NÔNG NGHIỆP
Authors: Nguyễn Như Khải  , Đặng Thị Oanh Yến  , Nguyễn Ngọc Thanh  , Nguyễn Nhật Nam
Published: October 2024

FABRICATION OF SILVER NANOPARTICLES AND THEIR ANTIBACTERIAL POTENTIAL FOR AGRICULTURAL APPLICATION
Tóm tắt: Vật liệu nano ra đời và phát triển với nhiều ứng dụng trong nông nghiệp bền vững như phòng trị bệnh, xử lí môi trường canh tác, và chuẩn đoán bệnh trên cây trồng. Hệ nano bạc (AgNPs) được triển khai thiết kế và chế tạo bằng phương pháp mới mang đặc tính kháng khuẩn đem lại tiềm năng ứng dụng cao trong nông nghiệp. Trong nghiên cứu này, AgNPs được tổng hợp thông qua sự kết hợp các chất hoạt động bề mặt sinh học không ion với chất hoạt động bề mặt ion ở điều kiện 65℃ trong 1 giờ. Các đặc tính quang học và hình thái AgNPs được xác định bằng quang phổ hấp thụ UV-Vis và kính hiển vi điện tử quét (SEM). AgNPs tổng hợp được có sự phân bố đồng nhất đạt kích thước 62±2,8 nm và phổ hấp thụ UV-Vis thu nhận với đỉnh thấp thu ở ~420 nm. Đồng thời, các hạt AgNPs biểu hiện đặc tính kháng khuẩn đối với Staphylococcus aureus ở các nồng độ khảo sát 80, 8, và 0,8 ppm với vòng tròn đường kính kháng khuẩn tương ứng là 12, 10, và 8 mm. Các thử nghiệm ban đầu cho thấy hệ AgNPs tổng hợp được không gây độc cho cây, có khả năng ứng dụng trong phòng và trị bệnh cho cây trồng.
Abstract: The development of nanomaterials has led to numerous applications in sustainable agriculture including disease prevention and treatment, cultivation environment management, and crop disease diagnostics. As-prepared silver nanoparticles have been designed and synthesized using a novel method, showcasing antibacterial properties that hold significant potential for agricultural use. In this study, silver nanoparticleswere synthesized through the combination of non-ionic biological surfactants with ionic surfactants at 65℃ for 1 hour. The optical properties and morphology of silver nanoparticleswere characterized by UV-Vis absorbance and scanning electron microscope (SEM), respectively. The results show that AgNPs had a high-homogeneity of size distribution of 62±2.8 nm and a single UV-vis absorbance band was obtained at ~420 nm. Moreover, as-prepared silver nanoparticles showed antibacterial activity with Staphylococcus aureus with diameters zones of 12, 10, and 8 mm in silver nanoparticles concentrations range of 80, 8, and 0.8 ppm, respectively.  Initial tests indicate that the synthesized silver nanoparticles are non-toxic to plants and have potential applications in the prevention and treatment of plant diseases.
NGHIÊN CỨU THỰC NGHIỆM CHỌN LỰA GIỐNG DƯA LÊ THÍCH HỢP CANH TÁC ĐIỀU KIỆN NGOÀI ĐỒNG Ở VỤ XUÂN HÈ TẠI TỈNH TRÀ VINH
Authors: Phan Chí Hiếu  , Sơn Thị Thanh Nga  , Phan Quốc Nam
Published: October 2024

EXPERIMENTAL STUDY ON SELECTION OF MUSKMELON VARIETIES ADAPTED TO FIELD CULTIVATION CONDITIONS IN THE SPRING-SUMMER SEASON  IN TRA VINH PROVINCE, VIETNAM
Tóm tắt: Mục tiêu nghiên cứu là lựa chọn giống dưa lê (Cucumis melo L.) thích nghi với điều kiện bất lợi ở ngoài đồng tại vùng đất phù sa phủ trên nền cát biển tại Trại Thực nghiệm Trồng trọt của Trường Đại học Trà Vinh trong vụ Xuân Hè 2022. Phương pháp thiết kế thí nghiệm theo kiểu lô sọc, 06 nghiệm thức là tổ hợp 03 giống dưa lê nhập nội F1 (Kim Hoàng Hậu, Bạch Ngọc Đường, Kim Ngọc Đường) kết hợp bón với 02 liều lượng K2O khác nhau là ̣94 K2O (kg/ha) 139 K2O (kg/ha), 03 lần lặp lại. Kết quả cho thấy cả 03 giống dưa lê thí nghiệm đều có sai khác về chiều dài lá, độ rộng lá, chiều dài thân sau 20 ngày trồng và chiều dài trái, chu vi trái, khối lượng trái. Trong đó, giống dưa lê Kim Hoàng Hậu có khối lượng quả cao nhất 1,325 kg/quả và năng suất lí thuyết 26,50 tấn/ ha. Độ Brix cao nhất 14,13% ở giống dưa lê Bạch Ngọc Đường bón công thức phân 139 K2O (kg/ha).
Abstract: The research objective is to select muskmelon varieties adapted to adverse conditions in the field in alluvial soils covered with sea sand at the Experimental Cultivation Camp of Tra Vinh University in the Spring-Summer season 2022. The experimental design method is in the style of striped batches, six treatments are a combination of three varieties of imported melon F1 (Kim Hoang Hau, Bach Ngoc Duong, Kim Ngoc Duong) combined with two different doses of K2O: 94 K2O (kg/ha) and 139 K2O (kg/ha), three repetitions. The results showed that all three experimental muskmelon varieties had differences in leaf length, leaf width, stem length after 20 days of planting and fruit length, fruit circumference, and fruit mass. Among them, Kim Hoang Hau muskmelon variety has the highest fruit weight of 1.325 kg/fruit and a theoretical yield of 26.50 tons/ha. The highest Brix level was 14.13% in Bach Ngoc Duong melon variety fertilized with 139 K2O fertilizer formula (kg/ha).
Diário de guerra
Authors: Barnea Lucia
Published: October 2024

Sentadas na grama. Somados os anos, não chegavam à minha meia-idade.Céu azul de aquarela, vento segredando na pele a proximidade da primavera. Mais adiante, estava a cerca, as casas, a alameda.
The Role of The Head of Madrasah in Increasing The Quality of Education at MIN 3 Jembrana Bali
Authors: Supriyadi Supriyadi
Published: October 2024

The head of the Madrasah as the top management has the authority and responsibility to the school he leads. To improve the quality and quality of the Madrasah in achieving maximum results, the head of the Madrasah must be competent, especially in related fields. The urgency of this study is to improve the quality of education, researchers use a qualitative descriptive approach.  Informants taken in this study are the head of the madrasah, teachers, and students. Data collection techniques using observation, interviews, and documentation. While data analysis is done systematically starting from data reduction, data presentation, and verification or closing. The final results obtained from this study include: First, the role of the head of the Madrasah in MIN 3 Jembrana includes: educators, managers, administrators, mentors, leaders, innovators, and motivators commonly abbreviated as EMASLIM. Second, the quality of education in MIN 3 Jembrana is very potential, proven MIN 3 Jembrana is very potential evidenced by the number of academic and non-academic achievements both at the provincial and national level so that it can get the title of pilot project Min achievements in Jembrana Regency, and Third, The Role of the head of Madrasah in improving the quality of, harmonious and balanced.
Phenomenological Insights into Children's Experiences: The Transition to Preschool
Authors: See Yih Wern , Zahari Ishak , Nazri Abdul Rahman Mohd
Published: October 2024

It is theoretically acknowledged that children’s transition to preschools bears significant implications. In particular, expectations from parents and teachers raise concerns on the transition to preschools. A case study involving three children who experienced the transition to a Malaysian private preschool is reported. Through observation and interviews with the four-year-olds, the children’s insights were substantiated with document analysis. The document analysis across photographs and scrapbooks provided an in-depth elaboration of the children’s transition experiences. First, four dominant themes emphasising the transition emerged: 1) the children’s relationship among peers and teachers, 2) rules, 3) routine, and 4) remarkable events. Second, it was found that the children could relate to the transition to preschool. Third, children’s experiences and feelings as presented in the investigation suggest holistic knowledge concerning the children’s transition to preschool. Practical and alternative teacher perspectives were explored in the context of successful transitions to preschools.
Islamic Boarding School Managementto Develop Students' Talents and Interests
Authors: Irma Suryani Siregar  , Ali Yusron
Published: October 2024

This study focuses on examining the implementation of Islamic boarding school management in its efforts to develop the talents and interests of students, both in terms of methods and programs carried out by the Islamic boarding school. The approach to this research is qualitative with a case study type. Data and data sources were obtained from the research subjects, namely the Al-Mukhlisin Islamic Boarding School, Padang Lawas, North Sumatra. Data collection techniques were carried out by in-depth interviews with the leaders of the Islamic boarding school, teachers, and students. Direct observation of daily activities at the Islamic boarding school. And documentation of documents and physical evidence at the location. The method used by the Islamic boarding school as the result of the analysis to determine the talents and interests of students is through daily observation, extracurricular activities, interviews, and discussions, as seen from the involvement of students in external competitions. This method allows the Islamic boarding school to see and improve students' talents according to their skills. The programs show comprehensive and structured management implementation, such as extracurricular activities of Tahfidz Al-Qur'an, calligraphy art, music art and various sports. In addition, this Islamic boarding school also routinely sends its students to participate in multiple national and international competitions, which have resulted in various achievements. These programs not only increase the skills and knowledge of students but also form strong characters and personalities by Islamic values. The Islamic boarding school also provides adequate facilities such as laboratories, art rooms, and fields that support activities as extracurricular activities. This study states that effective and innovative management is the primary key to developing the talents and interests of students. The originality of this Islamic boarding school management development research manages various innovative programs that include academic, religious, art, and sports activities and produces various achievements of students in multiple fields.
Исследование пределов огнестойкости противопожарных клапанов системы вентиляции
Authors: Райзер Ю.С. , Гатауллина А.Р. , Абдуллин З.З.
Published: October 2024

Рассмотрены результаты испытаний противопожарных клапанов торговой марки «Vertro»: KZО-2-60-800×800-O-S220-T-KR, типа KZО-2-60-O, KZО-2-90-800×800-O-S220-T-МC-KR, типа KZО-2-90-O и KZО-2-120-800×800-O-М220-T-KR, типа KZО-2-120-O на соответствие заявленному пределу огнестойкости. Противопожарные (огнезадерживающие) клапаны предназначены для перекрытия вентиляционных каналов с целью прекращения дальнейшего распространения огня, притока свежего воздуха к очагам возгорания, а также удаления дыма и других продуктов горения. Все три клапана нормально открытые, однокассетные с одной заслонкой, канальные, с приводом, расположенным снаружи. Корпус клапана изготавливается из оцинкованной стали. По периметру заслонки расположен термоактивный уплотнитель, который расширяется под действием высоких температур, обеспечивая герметичность клапана. Заслонка выполнена из огнестойкого стекломагнезита. В зависимости от предела огнестойкости применяется заслонка разной толщины. По результатам испытаний подтверждено, что клапаны соответствуют заявленному производителем пределу огнестойкости.

The results of testing fire dampers of the Vertro trademark: KZО-2-60-800×800-O-S220-T-KR, type KZО-2-60-O, KZО-2-90-800×800-O-S220-T-МC-KR, type KZО-2-90-O and KZО-2-120-800×800-O-М220-T-KR, type KZО-2-120-O against the declared fire resistance rating are considered. Fire dampers (fire-stopping) are designed to block the ventilation ducts in order to stop further fire spreading, supply fresh air to the fire sources, and provide for the smoke and other combustion products exhaust. The three valves are normally open, single-cassette with one flap, channel, with an outside drive. The valve body is made of galvanized steel. Along the flap perimeter there is a thermoactive seal that expands under the action of high temperatures and ensures the valve tightness. The flap is made of fire-resistant glass-magnesite. Depending on the fire resistance rating, a flap of different thickness is used. According to the test results, it was confirmed that the valves meet the fire resistance rating declared by the manufacturer.
Pengaruh Citra Merek, Harga dan Promosi Terhadap Keputusan Pembelian
Authors: Tamba Rousdy Safari , Karimauv Arief , Utomo Sulistyo Budi , Lestari Andi Nenie Sri , Turyandi Itto
Published: October 2024

One of the companies engaged in Islamic finance, providing deposits in the form of savings and distributing financing managed according to Islamic law in East Lombok Regency, is Bank Syariah Indonesia (BSI). BSI KCP Lombok Aikmel is part of the Islamic banking sector focusing on gold investment financing or gold installments. This research aims to analyze and test the influence of brand image, price, and promotion on customer decisions to purchase precious metals at BSI KCP Lombok Aikmel. This study employs a quantitative method, using accidental sampling as the sampling technique. The research subjects are customers who have made installments and purchased gold at BSI KCP Lombok Aikmel, resulting in 50 respondents. Data were collected through questionnaires, and the analysis was conducted using multiple linear regression with IBM SPSS 25. The analysis results show that brand image, price, and promotion significantly affect customer decisions to buy precious metals at BSI KCP Lombok Aikmel. This study contributes to BSI KCP Lombok Aikmel by emphasizing the importance of maintaining a positive brand image. If customer trust in BSI continues to grow, they are less likely to switch to other Islamic banks and will remain loyal to the services provided.
Pengaruh Perencanaan Sumber Daya Manusia Terhadap Kinerja Karyawan Ritel
Authors: Muliyati  , Yunaz Haswan , Bachri Syamsul
Published: October 2024

This study examines the relationship between human resource planning and employee performance in the retail sector. It focuses on how effective human resource strategies, such as workforce planning, recruitment, training, and development, impact the productivity, efficiency, and overall performance of retail employees. The study aimed to assess the effect of human resource planning on employee performance in the retail sector. Data collection was based on field observations and the distribution of questionnaires. Data analysis was performed using simple linear regression processed with SPSS, resulting in the equation Y=28.41+0.26X. The findings demonstrate that human resource planning has a positive and significant effect on employee performance. The hypothesis was accepted as the calculated t-value was greater than the t-table value (2.554 > 1.988).
Pengaruh jenis pemanis erythritol dan stevia terhadap karakteristik fisikokimia, dan sifat fungsional fruit leather kulit jeruk siam – mangga
Authors: Junaidi Fahmi , Hermavita Cindi Dwi , Rismaya Rina
Published: October 2024

Fruit leather refers to a food item obtained by drying pureed fruit in an oven. Typical raw materials used in fruit leather include nutrient-rich tropical and subtropical fruits, high in dietary fiber and vitamin C. This study aims to explore the impact of erythritol and stevia sweeteners on the physic, physicochemical, and functional characteristics of siam-mango orange peel fruit leather. The study employed a factorial complete randomized design (CRD) with two factors: (1) the treatment of the ratio of citrus peel and mango fruit with concentrations of JM1 (50%: 50%), JM2 (40%: 60%), JM3 (30%: 70%), and JM4 (20%: 80%), and (2) the type of sweetener, specifically erythritol (28%) and stevia (5%). The testing parameters included physical characteristics such as texture and color, chemical characteristics such as moisture, ash, protein, fat, and carbohydrate content, as well as functional properties including vitamin C, reducing sugar, antioxidant, and dietary fiber. According to physicochemical testing, the optimal treatment was achieved using a combination of JM2G2 orange peel 10% and manga 90% (JM2) along with Stevia sweetener type (G2). The physicochemical analysis revealed that the moisture content was 14.52%, ash was 0.933%, protein was 3.73%, fat was 2.875%, and carbohydrate content was 77.945%. As well as analyzing the physical properties and functional effects of food on texture content, this study measured total color value, vitamin C, reducing sugar, and antioxidant activity (IC 50). The results showed that the values for each were 3.5, 49, 13.675%, 27.215%, and IC 50 value: 76.02, respectively. The utilization of erythritol and stevia sweeteners has been shown to impact the quality of fruit leather.
Sifat pro-oksidan perasan jeruk lemon (Citrus Limun L.) untuk meningkatkan aktivitas antioksidan teh hitam
Authors: Anggraeni Frida Dwi , Suprihana
Published: October 2024

Black tea was a drink made through fermentation by the enzyme polyphenol oxidase which could enzymatically oxidize catechins in fresh leaves. Lemon juice was added to the tea to determine the effect of adding lemon juice to the tea. This research aimed to determine the effect of brewing temperature and the pro-oxidant properties of adding lemon juice on changes in polyphenols and antioxidant activity of black tea. This research used a factorial design with 2 treatment factors, namely black tea brewed at 80oC and 100oC with the addition of 0%, 1% and 2% lemon juice with 3 repetitions. Green tea was used as a control. Analysis was carried out on total phenol content and IC50. Data analysis used the ANOVA test with a confidence level of 0.05. The research results showed that the total phenol of steeping black tea at a temperature of 80oC were lower than those steeping black tea at a temperature of 100oC, namely 20.41% and 27.08% respectively, but lower than the total phenol of green tea. Likewise, the higher level of added lemon juice, the higher total phenol content, but lower than total phenol content of green tea. For antioxidant activity was measured by IC50 inhibition, it showed that IC50 value at a black tea steeping temperature of 100oC was lower than IC50 value at 80oC black tea steeping. Likewise, with the addition of lemon juice, IC50 value decreased, namely 65.75 µg/ml to 35.84 µg/ml for steeping black tea at 80oC and 22.88 µg/ml to 15.94 µg/ml for steeping black tea at 100oC. The smaller IC50 value, the higher antioxidant activity.
Pengaruh Beban Kerja dan Konflik Kerja terhadap Stres Kerja Pegawai Desa pada Kantor Desa Tanjong Kabupaten Luwu
Authors: Marsal Marsal , Manuhung Suparman , Natasya Natasya
Published: October 2024

Penelitian ini bertujuan mengetahui Pengaruh Beban Kerja dan Konflik Kerja terhadap Stres Kerja Pegawai Desa pada Kantor Desa Tanjong Kabupaten Luwu. Jenis penelitian adalah kuantitatif. Jenis data yaitu data primer dan data sekunder. Pengumpulan data dengan cara observasi, wawancara serta kuesioner. Jumlah sampel 23 responden. Analisis data : analisis deskriptif, uji validitas, uji reliabilitas, analisis regresi linear berganda, Uji F, Uji T, dan analisis koefisien determinasi (R2). Hasil penelitian bahwa beban kerja dan konflik kerja secara bersama-sama berpengaruh signifikan terhadap stres kerja Pegawai Desa dengan nilai sig 0,000 yang lebih kecil dari 0,05, secara parsial beban kerja berpengaruh signifikan terhadap stres kerja Pegawai Desa pada Kantor Desa Tanjong Kabupaten Luwu dengan nilai sig 0,000 yang lebih kecil dari 0,05, sedangkan konflik kerja tidak berpengaruh signifikan terhadap stres kerja Pegawai Desa pada Kantor Desa Tanjong Kabupaten Luwu dengan nilai sig 0,944 yang lebih besar dari 0,05.
Transforming Higher Education Scholarship after Covid-19 and in the Context of the 4th Industrial Revolution
Authors: Khunou Grace
Published: October 2024

In this edited book we are compelled to think about the convergences between the technological advances made possible by lockdowns brought on by the Covid-19 Pandemic and increased 4IR use in the South African context. The insights presented in this edited volume make a case that transformation of higher education scholarship cannot happen without making space for historically excluded knowers, thinking differently about historically marginalized knowledges and by constantly grappling with new developments and how they facilitate or encumber the transformation project. Consequently, Transforming Higher Education Scholarship After Covid-19 and in the Context of the 4th Industrial Revolution does a good job of illustrating how shifts towards the advancement of 4IR in the South African Higher Education sector impacted the transformation trajectory. In their efforts to reimagine universities in Africa into African universities the authors in this edited volume grapple with how race and gender intersect in making the experiences of Black women in the South African academy untenable. The chapters also contend for the significance of pluriversal knowledges by making a case for the place of Indigenous Knowledges Systems in building African universities. As we grapple with the changes the 4IR has on the world and the teaching and learning landscape, some of the chapters in this volume make a compelling argument for thinking both from a critical perspective about what the challenges the developments coming out of these technologies mean for South Africa and the continent as well as what possibilities for positive impact these tools bring. Transforming Higher Education Scholarship After Covid-19 and in the Context of the 4th Industrial Revolution, is timely and makes an important contribution to higher education transformation discourses.