bluuebunny/crossref_metadata_2025 huggingface dataset:
Evolution of Forest Humipedon Following a Severe Windstorm in the Italian Alps: A Focus on Organic Horizon Dynamics
Authors: Visentin Francesca , Zanella Augusto , Remelli Sara , Menta Cristina
Published: December 2024

This study investigates the effects of the 2018 Vaia windstorm on the evolution of humus profiles in forest soils of the north-eastern Italian Alps five years after the disturbance. The humipedon in five soil conditions was compared: intact forest (IF) and permanent meadow (M) for undisturbed soils, and soil under herbaceous cover (G), under dead wood (W), and bare soil (B) for windthrow-affected areas. No difference in pH and soil organic matter content (SOM) emerged within the same soil horizon between IF and windthrow-affected soils. When compared to IF, however, in G and B, a thinning of all O horizons (OL, OF, and OH) was detected, resulting in SOM loss and an increase in pH in the top 15 cm of the humipedon, conditions approaching the values found in M. Amphi was the most frequently occurring humus system in IF, with a shift towards a Mull system observed in all windthrow-affected soils—a shift more marked in G and B, approaching M conditions, but less marked in W, where the O horizon remained thicker. This study underscores the importance of considering soil heterogeneity and humus dynamics when assessing forest recovery and resilience after a severe disturbance.
Seedling Production of Retrophyllum rospigliosii in Nurseries and Potential Reforestation Areas Using Modeling Techniques
Authors: Camarena-Yupanqui Rozly Clarita , Orellana-Mendoza Edith , Bernaola-Paucar Rosario Marilu , Ames-Martínez Fressia Nathalie , Loardo-Tovar Harold , Quispe-Melgar Harold Rusbelth
Published: December 2024

The success of reforestation and restoration projects depends on several factors, with proper seedling management and the selection of an appropriate planting area being crucial. In Peru, the populations of Retrophyllum rospigliosii (Pilg.) C.N.Page (Ulcumano) have been decreasing due to intensive logging of one of the most valuable woods in South America’s tropical forests. There are few studies that unify the production of plants through seeds in nurseries and the identification of suitable areas to place the plants produced. Our study has two components. The first aimed to optimize the plant production process through an experiment that evaluated the effects of three doses of controlled-release fertilizer (CRF) (4.2, 8.4, and 12.6 g/L) and two container sizes (115 and 180 cc) on the morphological quality of seedlings in the nursery. The second component involved identifying potential reforestation areas using ecological niche modeling, based on climatic and edaphic variables. The results indicated that the 4.2 g/L CRF treatment for both container sizes had a significant positive effect on seedling growth. The average germination rate was 85% at 120 days. At six months after seedling transplantation, treatments of 4.2 g/L CRF in 115 cc and 180 cc containers were shown to have the best positive effect on morphological variables of seedlings, with a root collar diameter of 3.76 mm and a height of 13.25 cm. Regarding the potential niche models, an area of 6321.97 km2 with ideal conditions for reforestation with R. rospigliosii was estimated, with the departments of Huánuco, Pasco, Junín, and Cusco showing the highest potential. Based on this, it is estimated that over three million plants are needed for large-scale reforestation projects. Integrating silvicultural studies with niche models is a valuable tool for supporting reforestation and ecosystem restoration projects.
Optimization of the Stand Structure in Secondary Forests of Pinus yunnanensis Based on Deep Reinforcement Learning
Authors: Zhao Jian , Wang Jianmming , Yin Jiting , Chen Yuling , Wu Baoguo
Published: December 2024

This study proposes a multi-objective stand structure optimization scheme based on deep reinforcement learning, demonstrating the strengths of deep reinforcement learning in solving multi-objective optimization problems and providing innovative insights for sustainable forest management. Using the Pinus yunnanensis secondary forest in Southwest China as the research subject, we established a stand structure optimization model with stand spatial structure indexes as the optimization objectives and non-spatial structure indexes as the constraints. We optimized the stand structure by combining deep reinforcement learning with three tree-felling decisions: random selection, tree homogeneity index, and spatial competition. Simulated cutting experiments were conducted on circular plots (P1–P5) using deep reinforcement learning and reinforcement learning. The initial objective function values of all plots (0.2950, 0.2954, 0.3445, 0.3010, 0.3168) were effectively improved. The maximum objective function values after optimization by the deep reinforcement learning schemes (0.3815, 0.3701, 0.4301, 0.4599, 0.3689) were significantly better than those achieved by the reinforcement learning schemes (0.3394, 0.3579, 0.3986, 0.4321, 0.3556). Among these, the optimization scheme combining random selection and deep reinforcement learning showed the greatest average improvement across the five plots (29.73%), with its enhancement of the objective function value significantly surpassing that of other optimization schemes. This study applies deep reinforcement learning to stand structure optimization, proposing a new approach to solving multi-objective optimization problems in stand structure and providing a reference for forest health management in Southwest China.
Expression and Analysis of TBX3 Gene in the Skin from Three Locations on Dun Mongolian Bider Horse
Authors: An Tana , Dugarjaviin Manglai , Han Haige
Published: December 2024

Background/Objectives: The Mongolian horse, one of the oldest and most genetically diverse breeds, exhibits a wide variety of coat colors and patterns, including both wild-type and unique features. A notable characteristic of dun Mongolian horses is the presence of Bider markings—symmetrical, black-mottled patterns observed on the shoulder blades. These markings are also seen in Przewalski’s horses. The dun coat color, a common wild-type phenotype in domestic horses, is characterized by pigment dilution with distinct dark areas and is regulated by mutations in the TBX3 gene. This study aimed to investigate the role of TBX3 in the development of Bider markings in dun Mongolian horses. Methods: Skin tissue samples were collected from three key anatomical regions of dun Mongolian horses with Bider markings: the croup, dorsal midline, and shoulder. Histological staining was conducted to examine the skin and hair follicle structure and pigment distribution. RT-qPCR was used to measure TBX3 mRNA expression, while immunoblotting and immunohistochemistry were employed to analyze TBX3 protein levels and localization. Results: Hematoxylin and eosin staining revealed the skin and hair follicle structures, including the epidermis, hair shaft, and hair bulb across different stages of the hair growth cycle. Differences in pigmentation were observed across the sampling sites. The croup and the light-colored area of the shoulder showed asymmetrical pigmentation, while the dorsal midline and dark-colored area of the shoulder displayed symmetrical pigmentation. TBX3 mRNA expression levels were significantly higher in the croup compared to the shoulder and dorsal midline; however, corresponding TBX3 protein expression did not show significant differences. Immunohistochemical analysis localized TBX3 protein predominantly in the hair bulb and epidermis. Conclusions: This study demonstrates region-specific differences in TBX3 expression that correlate with pigmentation patterns in dun Mongolian Bider horses. These findings provide valuable insights into the molecular mechanisms underlying Bider markings, offering a deeper understanding of the genetic regulation of coat color and primitive markings in equines.
Structural Analysis and Functional Prediction of Gut Microbiota in Wild and Cultured Striped Knifejaw (Oplegnathus fasciatus)
Authors: Zhu Kai , Zhang Susu , Xu Kaida , Wang Haozhan
Published: December 2024

Understanding the role of gut microbiota in fish health is crucial for optimizing aquaculture practices and ensuring sustainable fish populations. In this study, the diversity and compositional differences of intestinal microbiota were comparatively analyzed between wild and cultured striped knifejaw (Oplegnathus fasciatus Kroyer, 1845). Using high-throughput 16S rDNA sequencing and bioinformatics, an in-depth investigation of the gut microbiota in both populations was conducted. The results revealed that the number of intestinal bacterial sequences was significantly higher in the cultured population than in the wild population. The study included 16 individuals from the wild population and 38 individuals from the cultured population, with an average weight of 67.7 ± 12.4 g and 44.9 ± 16.8 g, respectively. Alpha diversity analysis indicated that intestinal microbiota species richness and diversity were both greater in the cultured O. fasciatus. Furthermore, significant differences were observed in the intestinal bacterial communities between the two populations, with Pseudomonadota, Verrucomicrobia, and Bacillota dominating in the cultured population, whereas Pseudomonadota overwhelmingly dominated in the wild population. Functional prediction analysis revealed differences between the intestinal microbiota in pathways related to genetic and environmental information processing, as well as metabolism. This study provides critical data for understanding the structure and function of intestinal microbial communities in O. fasciatus and offers a theoretical foundation for optimizing farming strategies to improve fish health and growth performance.
Correction: Auskalnis et al. Synchronous Seminoma of Testis and Renal Cell Carcinoma: A Rare Case Report. Medicina 2024, 60, 1553
Authors: Auskalnis Stasys , Janciauskiene Rasa , Rimsaite Urte , Alksnyte Aurelija , Ugenskiene Rasa
Published: December 2024

In the published publication [...]
2 km Uncompressed HD Video Wireless Transmission at 100 GHz Based on All-Optical Frequency Up- and Down-Conversion
Authors: Gao Shuang , Jiang Yutong , Li Zhuoxin , Zhong Qing , Zhu Min , Zhang Jiao
Published: December 2024

The millimeter-wave wireless transmission system is widely regarded as a promising solution for applications of future 6G communication. This paper presents an experimental comparison between all-optical and all-electric receivers for millimeter-wave communication systems over a 15 m wireless link and demonstrates 200 m and 2 km real-time uncompressed HD video transmission using an all-optical transceiver at 100 GHz. The systems leverage photonics-assisted heterodyne beating techniques at the transmitter, while the receivers employ either an avalanche photodiode (APD)-based all-optical approach or an envelope detection-based all-electric approach. Experimental results show that the all-optical transceiver supports significantly higher transmission rates, achieving error-free transmission at up to 11.318 Gbps over a 200 m wireless link without clock recovery, compared to the all-electric receiver, which is limited to only 3.125 Gbps error-free 15 m transmission. This work proves that the proposed system based on the all-optical receiver is more promising for supporting future 6G scenarios requiring ultra-wideband, high capacity, and wide coverage high-speed wireless communications.
Dipole Potential of Monolayers with Biologically Relevant Lipid Compositions
Authors: Cardoso Renato M. S. , Lairion Fabiana , Disalvo Edgardo Anibal , Loura Luís M. S. , Moreno Maria João
Published: December 2024

The membrane dipole potential that arises from the interfacial water and constitutive dipolar groups of lipid molecules modulates the interaction of amphiphiles and proteins with membranes. Consequently, its determination for lipid mixtures resembling the existing diversity in biological membranes is very relevant. In this work, the dipole potentials of monolayers, formed at the air–water interface, from pure or mixed lipids (1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine (POPC), 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphoethanolamine (POPE), 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphatidyserine (POPS), sphingomyelin (SpM) and cholesterol) were measured and correlated with the mean area per lipid. The results showed that, as previously observed, cholesterol increases the dipole potential in correspondence with the decrease in the average area per lipid. At the small mole fractions encountered in biomembranes, the presence of the negatively charged lipid POPS increases the dipole potentials of monolayers despite inducing an increase in the average area per lipid. Additionally, the inclusion of POPE in POPC:cholesterol monolayers disrupts the area condensation induced by cholesterol while increasing the membrane dipole moment, leading to a small reduction in the dipole potential. This trend is reinforced for the quaternary POPC:cholesterol:POPE:POPS 4:3:2:1 system, which mimics the inner leaflets of eukaryotic plasma membranes. In agreement with previous works, the replacement of phosphocholine lipids with sphingomyelin leads to a decrease in the dipole potential. Together, this results in a lower dipole potential for the SpM-enriched outer leaflet, generating a non-zero transbilayer dipole potential in the asymmetric plasma membranes of eukaryotic cells.
The Chemical Structure and Pharmacological Activity of Sesquiterpenoids in Dendrobium Sw.
Authors: Li Jiaying , Gao Chunxue , He Zaishuang , Huang Ya , Tan Daopeng , Qin Lin , Wu Di , Wu Jiajia , Wang Ya , He Yuqi , Wu Xingdong , Lu Yanliu
Published: December 2024

Dendrobium is one of the most important orchids with high medicinal value. The diverse pharmacological activities of Dendrobium are attributed to its rich content of secondary metabolites. Due to the high variety and content of sesquiterpenoids in Dendrobium, more studies on their pharmacological activities have been reported. More than 100 sesquiterpenoids have been isolated from the roots and stems of Dendrobium, and these compounds have been shown to play important roles in a variety of diseases. However, there is a lack of systematic summarization of the chemical structures and pharmacological activities of sesquiterpenoids in Dendrobium Sw. Here, we reviewed the chemical structures of the sesquiterpenoids in Dendrobium plants, classified them according to the skeleton types, and summarized their pharmacological activities and mechanisms of action, with a view to laying a foundation for future studies on their pharmacological activity mechanisms and rational clinical applications.
Tunable TiZrMoC Coatings: A Comprehensive Study of Microstructure, Mechanical Properties, and Wear Resistance
Authors: Pogrebnjak Alexander , Buranych Volodymyr , Ivashchenko Volodymyr , Borba-Pogrebnjak Svitlana , Maksakova Olga , Caplovicová Maria , Goncharov Alexander , Onoprienko Alexei , Skrynskyy Petro , Sahul Martin , Konarski Piotr , Budzynski Piotr , Kaminski Mariusz , Opielak Marek , Flock Dominik , Pelenovich Vasiliy , Bing Yang
Published: December 2024

TiZrMoC coatings were deposited on Si(100) substrates using a DC dual magnetron sputtering. The composition was controlled by adjusting the sputtering parameters of the TiZrMo and graphite targets. The influence of graphite target current on the resulting coating properties was explored. TEM analysis revealed a single-phase structure with Ti/Mo/Zr substitutional elements, columnar grains, and a strong [111] texture. Nanotwins and stacking faults were prevalent within the nanocrystals. EDX, SIMS, XRD, and XPS analyses confirmed the elemental composition and nanostructure. Computational modeling was employed to investigate the mixing behavior of the quaternary solid solutions depending on the valency electron concentration. The films exhibited exceptional mechanical properties, including a maximum hardness of 35 GPa and a wear rate of 2.11 × 10−7 mm3N−1m−1, attributed to the presence of an amorphous carbon layer and optimized deposition parameters. These findings demonstrate the potential of TiZrMoC coatings for advanced applications requiring exceptional wear resistance and durability.
Unveiling the Potential of Cmax f2 Factor Applied to Pilot Bioavailability/Bioequivalence Studies—A Case Study with Pazopanib Drug Products
Authors: Henriques Sara Carolina , Leblanc Ana , Simões Sérgio , Fonseca Marlene , Pimentel Francisco Luís , Almeida Luis , Silva Nuno Elvas
Published: December 2024

Background: When companies are uncertain about the potential of a new formulation to be bioequivalent to a Reference product, it is common practice to carry out downsized pilot studies as a gatekeeping in vivo strategy to decide whether to move forward or not with a full-size pivotal study. However, due to the small study size, these studies are inarguably more sensitive to variability. Objectives: To address and mitigate the uncertainty of the conclusions of pilot studies concerning the maximum observed concentration (Cmax), the f2 factor was proposed as an alternative approach to the average bioequivalence statistical methodology. Methods: In this work, the alternative methodology is applied to pharmacokinetic data from pilot bioequivalence trials performed with pazopanib 200 mg and 400 mg. Results: Despite the small sample size, and very high intra-subject variability, the f2 factor demonstrated the potential for predicting bioequivalence. The positive results were confirmed in the full sized pivotal studies. Conclusions: In conclusion, this alternate methodology shows promise in reducing uncertainty associated with pilot studies and aiding in decisions to go forward with pivotal bioequivalence studies.
Heterotropic Activation of Cytochrome P450 3A4 by Perillyl Alcohol
Authors: Ryu Ji Hyeon , Yu Jieun , Jeon Jang Su , Jo Seongyea , Lee Soo Min , Kim Hyemin , Park Han-Jin , Oh Soo Jin , Kim Sang Kyum
Published: December 2024

Background/Objectives: Perillyl alcohol (POH), a monoterpene natural product derived from the essential oils of plants such as perilla (Perilla frutescens), is currently in phase I and II clinical trials as a chemotherapeutic agent. In this study, we investigated the effect of POH on cytochrome P450 (CYP) activity for evaluating POH–drug interaction potential. Methods: The investigation was conducted using pooled human liver microsomes (HLMs), recombinant CYP3A4 (rCYP3A4) enzymes, and human pluripotent stem cell-derived hepatic organoids (hHOs) employing liquid chromatography-tandem mass spectrometry. Results: POH inhibited the activities of CYP2A6 and CYP2B6 with Ki of 6.35 and 3.78 μM, respectively, whereas it stimulated CYP3A4 activity in pooled HLMs incubated with midazolam (MDZ). In a direct CYP inhibition assay using HLMs, activities of CYP2C9, CYP2C19, and CYP2E1 were also inhibited by POH, with IC50 values greater than 50 μM, but those of CYP1A2, CYP2C8, CYP2D6, and CYP3A4 (testosterone) were not significantly inhibited. In pooled HLMs, the Vmax/Km value of 1′-hydroxy MDZ, but not that of 4-hydroxy MDZ, was increased 2.7-fold by 100 μM POH compared with that in the absence of POH. Moreover, stimulation of MDZ 1′-hydroxylation by CYP3A4 was observed in hHOs and rCYP3A4 with cytochrome b5 but not rCYP3A4 without cytochrome b5. Furthermore, activation of CYP3A4-mediated metabolism by POH was observed in HLMs incubated with fimasartan but not atorvastatin, buspirone, donepezil, nifedipine, or tadalafil, suggesting a substrate-dependent activation of CYP3A4 by POH. Conclusions: POH inhibits CYP2A6 and CYP2B6, but it activates CYP3A4. These findings underscore the need for further evaluation of the interactions of clinical drugs with POH.
Toward a Historiography of the Sacred
Authors: Beltramini Enrico
Published: December 2024

In this study, I explore the possibility of a historiography that recognizes and incorporates the sacred as an essential part of how reality is conceived. Here, the “sacred” refers to the belief that reality is inherently shaped and influenced by the presence and action of God. For the majority of the last twenty centuries, this has been the prevailing conception of reality in Europe. However, interpreting such a conception poses a significant hermeneutical challenge, that is understanding a sacred worldview that is fundamentally different from modern perspectives, without distorting its meaning through present-day assumptions or biases. The aim of this introductory article is to identify both the root of the hermeneutical problem and an opportunity to solve it. The root of the problem lies in the predominance of an immanent, secular approach to history. This approach dictates a secular interpretation of history that systematically excludes or marginalizes the transcendent, reducing complex historical realities shaped by sacred or metaphysical dimensions to purely material or social phenomena. The opportunity is the crisis of the secularization thesis and the loosening of secularism’s grip on historiography that open the space for alternative historiographical approaches. These alternative approaches would prioritize understanding the sacred on its own terms, rather than subordinating it to secular explanations.
The Russian Orthodox Church Turns to the Global South: Recalibration of the Geopolitical Culture of the Church
Authors: Suslov Mikhail
Published: December 2024

The Ukrainian parliament’s 2024 law banning the Ukrainian Orthodox Church of the Moscow Patriarchate (UOC-MP) marks a significant conceptual and strategic recalibration of the Russian Orthodox Church’s (ROC) geopolitical culture. The framework of the “Russian world” project, which asserted a shared civilizational identity between Russia and its Orthodox neighbors, is increasingly untenable amidst the war with Ukraine and splits in the Orthodox world. In response, the ROC has pivoted towards global outreach, notably expanding into Africa. This move aligns with Russia’s broader geopolitical strategy, which frames Russia as a defender of multipolarity and traditional values against Western influence. However, the ROC’s attempt to adopt a global stance and reimagine itself as a universal church, rather than a pillar of the “Russian civilization”, faces ideological and geopolitical challenges, as explored in the paper.
Introduction to the Special Issue Sacred Heritage: Religions and Material Culture
Authors: Niedźwiedź Anna
Published: December 2024

In recent years, studies dedicated to relations between “religion” and “heritage” have apparently shifted from questions concerned with the dichotomy and tensions between these two domains (see Meyer and de Witte 2013) towards a scrutinization of their complex entanglements and not so clear cut boundaries (see e [...]
Protocol Reverse Analysis of Ethernet for Control Automation Technology Based on Sequence Alignment and Pearson Correlation Coefficient
Authors: Wang Xiaopeng , Yao Yu , Li Zhongwei , Su Changhe , Tian Yunsong
Published: December 2024

This study presents a novel algorithm for protocol reverse analysis of EtherCAT. The algorithm combines sequence alignment and the Pearson correlation coefficient. We utilize value distribution statistics and the bit flip rate algorithm to effectively partition the protocol fields. We propose a semantics analysis method based on sequence alignment when HMI data and EtherCAT messages have a direct correlation. Conversely, for circumstances where there exists a decoding relationship between HMI data and EtherCAT messages, a semantic analysis method is proposed that employs the Pearson correlation coefficient. We completed a reverse analysis of the EtherCAT messages from an industrial robot system. By comparing the experiment results with the protocol description document, we validated the effectiveness of the method.
A Timeline-Based Study of the Early Reconstruction Phases in Ishikawa Prefecture Following the 2024 Noto Peninsula Earthquake
Authors: Yang Daqian , Minami Masaaki , Fahim Ashraf Uddin , Kawashita Toru
Published: December 2024

An earthquake and tsunami on 1 January 2024, caused extensive damage across Ishikawa Prefecture, Japan. This study systematically examined the recovery process. It aimed to analyze the initial stages of recovery and highlight the lessons learned from these efforts. By collecting data from Ishikawa’s post-disaster records, including government reports, reconstruction plans, local news, and observational records, we compiled the first “Early Reconstruction Timeline for Ishikawa”. This timeline divided the recovery process into four phases: disaster occurrence and emergency response (January), reconstruction preparation (February–April), the beginning of early reconstruction (May–September), and the beginning of mid-reconstruction to the present (October–Present). Analysis of this timeline revealed several significant findings. First, Ishikawa’s reconstruction efforts were structured into three key phases: ‘Post-Disaster Relief and Emergency Response’, ‘Post-Disaster Reconstruction Preparation Period’, and ‘Infrastructure Reconstruction and Emergency Housing Construction Period’. This phased approach highlights an efficient and organized recovery process, distinguishing Ishikawa from other disaster-affected regions. Additionally, the housing reconstruction model showcased an innovative balance between emergency housing as a public resource and the specific needs of displaced residents. These findings not only establish a timeline-based framework for Ishikawa’s reconstruction but also provide practical insights for guiding early post-disaster recovery efforts in various disaster-affected contexts worldwide.
Vortex–Swirl Flow Results in Microbubble-Enhanced Transient Water Properties: A Time-Resolved Analysis from Fine-Bubble Engineering
Authors: English Niall J. , Kamp Cees M. B.
Published: December 2024

The inward vortex–swirl-type motion of convective, rectilinear water flow has been studied vis-à-vis its propensity for bubble formation, with a particular focus on the microbubble region. It has been found that a large population of smaller microbubbles, around 1 μm in diameter, is created in the process of these types of motions, and the time-dependent behaviour of this “micro-bubbly” water is analysed as Stokes’ law for microbubble dissipation occurs, such as bubble population, dissolved oxygen, pH, etc. Exponential decay analysis on the DLS-measured microbubble populations gave relaxation times τ of ~2.4 h and 3.6 h in exp(−t/τ) fits for DI and filtered tap water, respectively. The downward shift in pH was about 0.08 ± 0.016 and 0.11 ± 0.018 for DI and filtered tap water, respectively. For DI water, the level of dissolved oxygen (DO) at room temperature of 19 °C was ~102% at “t = 0”, and it declined to ~87% within 3 h (with the unprocessed background sample being about 84 ± 1.1%). The respective DO decay results in the case of the filtered tap water (at 19 °C) were ~105% at “t = 0”, declining to 91% within 3 h (background = 86 ± 1.2%). This allows for the dynamic properties to be understood in the context of how microbubbles determine the observed properties of post-flow water, including rationalising the observations of its time-transient properties. Naturally, this may well be of interest in gas transfer optimisation in the growing field of “fine-bubble engineering”.
Artificial Intelligence in clinical laboratory diagnostics
Authors:   South Ural State Humanitarian and Pedagogical University, Krylov A. P. , Sheblaev M. V. ,   Federal State Budgetary Educational Institution of Higher Education;Lomonosov Moscow State University;
Published: December 2024

The use of AI in medicine opens up new opportunities for improving the efficiency and
quality of medical care. AI technologies can automate routine tasks, improve diagnostic accu
racy, speed up the analysis of medical data, and support doctors in making clinical decisions.
One of the most promising areas of AI application in healthcare is clinical laboratory diagnostics.
Studi Pengolahan Limbah Eceng Gondok (Eichhornia Crassipes) Sebagai Bahan Campuran Beton K-175
Authors: Nadya Shafira Salsabila  , hendra hermawan Okky , haris santoso Teguh , firmansyah Hasbi
Published: December 2024

Tanaman eceng gondok yang berkembang biak dengan cepat dapat mengganggu lalu lintas (transportasi) air, meningkatnya penguapan, dan hilangnya air melalui daun-daunnya. Selain itu, tanaman eceng gondok yang mati dan terjatuh ke dasar perairan akan berakibat dalam peningkatan percepatan pendangkalan perairan, dan berkurangnya nilai keindahan lingkungan perairan. Oleh karena itu, ada manfaat dari penggunaan eceng gondok, seperti sebagai bahan tambahan untuk campuran beton. Untuk melakukan pengujian laboratorium, ditambahkan eceng gondok yang sudah berbentuk butiran atau serbuk pada beton dalam jumlah nol, satu, lima, dan sepuluh persen. Uji kuat tekan beton dilakukan dengan mutu K-175 selama 7 hari, 21 hari, dan 28 hari. Hasilnya adalah 10,78 Mpa, 10,39 Mpa, 6,35 Mpa, dan 1,92 Mpa pada hari ke-7, sementara pada hari ke-21, nilainya adalah 13,56 Mpa, 12,51 Mpa, 6,54 Mpa, dan 3,08 Mpa. Pada hari ke-28, nilainya adalah 15,01 Mpa, 13,38 Mpa, 7,61 Mpa, dan 3,18 Mpa. Kadar serbuk eceng gondok menurunkan kekuatan tekan beton
Perencanaan Gedung Student Center UNISNU Jepara 5 Lantai Menggunakan Metode Sistem Rangka Pemikul Momen Khusus
Authors: Arba 'Alma Brasyelia , Hidayati Nor , Adi Saputro Yayan
Published: December 2024

Gedung student center merupakan salah satu fasilitas yang dibutuhkan dengan adanya peningkatan jumlah mahasiswa di UNISNU Jepara yang bertujuan untuk penunjang kebutuhan kegiatan belajar mahasiswa di kampus. Perencanaan dan perhitungan struktur menggunakan SNI 2847-2019. Perhitungan beban gempa menggunakan SNI 1726-2019 dan perhitungan pembebanan gedung menggunakan SNI 1727-2019 dan PPPIUG 1987. Sedangkan untuk permodelan strukturnya menggunakan bantuan software SAP2000. Hasil perencanaan struktur meliputi pelat atap tebal 120 mm dengan tulangan arah X 10-200 dan arah Y 10-250. Pelat lantai tebal 120 mm dengan tulangan arah X 10-200 dan arah Y 10-250. B1 25/50 dengan tulangan lentur tumpuan 7D19 dan tulangan geser 10-150 serta tulangan lentur lapangan 4D19 dan tulangan geser 10-200. B2 25/50 dengan tulangan lentur tumpuan 4D19 dan tulangan geser 10-150 serta tulangan lentur lapangan 3D19 dan tulangan geser 10-200. Balok anak 20/40 dengan tulangan lentur tumpuan 5D19 dan tulangan geser 10-100 serta tulangan lentur lapangan 2D19 dan tulangan geser 10-150. K1 50/50 dengan tulangan pokok 8D19 dan tulangan sengkang 10-150. K2 50/50 dengan tulangan pokok 6D19 dan tulangan sengkang 10-150.
Stabilization of Soil Using Eggshell Powder as a Partial Replacement for Lime: A Sustainable Approach
Authors: Adnan  , Jawad Ahmad , Raza Hassam , Alam Dawood Shah
Published: December 2024

This study assesses the effectiveness of lime in stabilizing soil and focus on the prospects of using eggshell powder as an economic and environmentally friendly alternative to lime. To ascertain the impact of different degrees of eggshell powder, particular at 0.5 g, 1g, 1.5g and 2g equivalent to 0.5%, 1%, 1.5% and 2% the weight of the soil respectively; and to replace up to 50% of the lime within the stabilization handle. This study proves that all treated tests shown relatively better result than untreated soil, that must satisfactory to ensure the stabilization strategy. Without a doubt, when lime is substituted with 25% of eggshell powder in the concrete formulation where favorable strength characteristics were obtained, it established that this level of substitution may well be carried out feasibly in practical use. This ponder supports the sensible treatment of accumulating eggshell powder to advance soil compactness and recommends discovering more deliberately wakeful development rehearses through utilizing waste products. The research finds reveal ways in which cost can be reduced and the soil natural appearance lost with traditional methods of soil stabilization can be minimized.
Faktor-Faktor Keselamatan dan Kesehatan Kerja (K3) Terhadap Kinerja Pekerja Konstruksi
Authors: Fransiska Meilani Putri  , Veronika Happy Puspasari  , Dewantoro
Published: December 2024

Perusahaan akan berhasil mencapai tujuannya dengan baik apabila mampu mengelola sumber daya manusia (SDM) dengan efektif. Salah satu upaya penting dalam manajemen sumber daya manusia adalah memprioritaskan keselamatan dan kesehatan kerja (K3) para pekerjanya. Program K3 menjadi tanggung jawab perusahaan dalam melindungi pekerja selama menjalankan berbagai aktivitas kerja. Program ini dilakukan oleh perusahaan dengan tujuan menjaga kesejahteraan karyawan agar terlindungi dari cedera atau kecelakaan di tempat kerja, dan juga untuk mencegah timbulnya penyakit, baik yang bersifat sementara maupun jangka panjang. Studi literatur ini bertujuan untuk mengidentifikasi faktor-faktor K3 yang memengaruhi kinerja pekerja di proyek konstruksi. Metodologi yang digunakan adalah pencarian literatur melalui pencarian di database seperti Google Scholar, dimana literatur yang relevan diolah dan dijadikan sumber informasi untuk analisis lebih lanjut. Berdasarkan studi literatur yang ada, terdapat 29 faktor K3 yang memengaruhi kinerja pekerja. Lima faktor utama yang paling banyak digunakan pada penelitian sebelumnya adalah: prosedur K3 mudah diterapkan dengan konsisten, perusahaan berusaha membangun komunikasi yang baik dengan seluruh pekerja, perbaikan peraturan K3 secara berkala, peraturan K3 mudah dipahami, dan pekerja mampu menyelesaikan tugas dalam batas waktu yang telah ditentukan.
Analisis Penerapan Sosialisasi dan Implementasi Kesehatan dan Keselamatan Kerja serta Pencegahan Kecelakaan Kerja Untuk Keberhasilan Pembangunan Proyek Konstruksi
Authors: Ferdiyanto Anggi , Rochmanto Decky , Wakit Ahmat
Published: December 2024

Program Keselamatan dan Kesehatan Kerja (K3) pekerja sangat diperlukan bagi pekerja. Terutama dilingkungan kerja yang memiliki risiko kecelakaan kerja dan penyakit akibat kerja yang tinggi, karena kecelakaan kerja di bidang konstruksi tidak hanya ditimbulkan system yang telah diterapkan oleh perusahaan tetapi juga kesadaran setiap individu untuk menghindari kecelakaan kerja. Sosialisasi dan implementasi kesehatan dan keselamatan kerja (K3) serta program pencegahan kecelakaan kerja pada proyek pembangunan Ash Phond dan Aro Wwtp masih belum terlaksana dengan maksimal, dikarenakan masih banyak pekerja yang belum sadar akan pentingnya program K3, tujuan penelitian ini untuk mengetahui dan menganalisis penerapan sosialisasi dan implementasi K3 serta pencegahan kecelakaan kerja untuk keberhasilan pembangunan proyek Ash pond & Aro Wwtp pada perusahaan PT. Murinda Iron Steel (PLTU) Tanjung jati B Jepara.
presença negra na História da Educação do Brasil
Authors: Sousa Kelly de Faro , Silva Livia Souza da
Published: December 2024

O presente artigo tem como objetivo analisar estudos recentes do campo da história da educação que se ocupem das questões étnico-raciais no Brasil. A pesquisa utilizou uma abordagem de "estado do conhecimento", através de uma revisão bibliográfica, resultando em 2 teses e 9 dissertações. A análise revelou uma ausência de pesquisas com perspectiva negra, destacando a necessidade de questionar os sistemas que perpetuam essas desigualdades. Critérios de seleção e avaliação são cruciais para promover a inclusão de pesquisadores negros e incentivar estudos que abordem a experiência e contribuição da comunidade negra na educação. A comunidade acadêmica e instituições de ensino têm um papel vital em apoiar pesquisas que ampliem a representatividade e inclusão de diversos grupos étnico-raciais, contribuindo para um conhecimento mais abrangente e refletindo a complexidade e diversidade da sociedade brasileira, além de proporcionar uma visão mais reflexiva do lugar do negro na História da Educação e na historiografia brasileira.
QGIS para monitoramento ambiental
Authors: Rocha Cézar Henrique Barra , Dias Johnny de Souza
Published: December 2024

: Este livro foi produzido com objetivo de auxiliar usuários comuns no uso do QGIS,
um software livre de Geoprocessamento de código aberto. São apresentados capítulos em
ordem lógica que ensinam onde conseguir dados livres da Terra. Num primeiro momento
esses dados são obtidos pela INDE e através de plugins do próprio QGIS como
QuickMapService, DSG e MapBiomas, permitindo a montagem de uma base de dados
inicial e rápida para análises espaciais. Nos capítulos seguintes o usuário irá tratar dados
mais específicos para geração de produtos que complementam a base de dados de
conhecimentos. Desde o georreferenciamento de imagens, passando por arquivos DEM do
radar FABDEM para geração de produtos do relevo e de drenagem com destaque para as
bacias hidrográficas. Classificação de imagens para cartas de uso da terra, obtenção das
APP e aplicação das métricas ecológicas de paisagem, tudo convergindo para o
monitoramento ambiental de áreas de interesse.
Amatör Sporculardaki Sigara Kullanımının Egzersiz Kapasitesi ve Fiziksel Aktivite Üzerine Etkileri
Authors: Yıldız Abdurrahim , Çanakçı Rabia , Rüştü İlke Elif , Sarıhan İzel Azize
Published: December 2024

Giriş ve Amaç: Amatör sporculardaki sigara kullanım süresinin ve miktarının sporcuların vücut fonksiyonları, fiziksel aktivite düzeyi, performans ve egzersiz seviyesine etkisini değerlendirmektir.
Gereç ve Yöntemler: Çalışma amatör futbol kulüplerindeki 18-30 yaş arasındaki 66 sporcu ile gerçekleştirildi. Çalışmada nikotin kullanım seviyesi Fagerstrom Tolerans Anketi (FTA) ve Sigara Bağımlılık Ölçeği; fiziksel aktivite düzeyi Baecke fiziksel aktivite anketi kullanılarak değerlendirildi. Ayrıca performans değerlendirmesi için 6 dakika yürüme testi (6DYT) ve tepe öksürük kuvvetini ölçmek içinde pik flow metre kullanıldı.
Bulgular: Araştırmaya katılan amatör sporcularda sigara içenlerin yaş ortalamaları 24.77±3.31, sigara içmeyenlerin ortalamaları 21.91±4.75 tespit edildi. Yapılan bu araştırmada amatör sporcuların %65’i sigara kullanırken, %35’i sigara kullanmamaktadır. Sigara içen sporcuların bağımlılık düzeyleri FTA’da 3.86±2.04, Sigara Bağımlılık Ölçeği’nde ort. 30.77±12.08 olarak bulundu. Sigara kullanan sporcuların kullanmayan sporculara göre 6DYT mesafesi ve test sonrası ölçülen SPO2 değeri anlamlı derece düşük olduğu bulundu (p=0.002 ve p=0.027).
Sonuç: Çalışmamız sonucunda amatör sporcularda sigara kullanımının performans ve SPO2 üzerinde olumsuz etkilerinin olduğu görülmektedir. Bu etkiler sporcunun bireysel performansında negatif etkiye sebep olmaktadır. Amatör sporcuların sigara kullanım alışkanlıklarının yüksek olduğu görülmektedir. Bu açıdan bireysel sağlık ve performansın arttırılması için sigaranın olumsuz etkileri hakkında daha fazla bilgilendirici eğitimlerin verilmesi gerektiğini düşünmekteyiz.
Propiedades térmicas de arcillas, discos experimentales y cerámicas arqueológicas. El caso de la Depresión del río Salado bonaerense (Argentina)
Authors: Rivas González Miranda , Conconi Susana
Published: December 2024

La evidencia arqueológica del curso inferior del río Salado (provincia de Buenos Aires) nos muestra un escenario en el cual grupos de cazadores-recolectores-pescadores se asentaron y manufacturaron cerámica durante casi 2400 años. Estos grupos tenían un acceso directo a recursos como arcilla, agua y maderas para ser usadas como combustible, aptos para la confección de recipientes en los cuales se cocinaron y almacenaron diferentes recursos alimenticios. Este artículo presenta los resultados de análisis térmicos de arcillas locales y discos experimentales, a través de la aplicación de tres técnicas analíticas (Difracción de Rayos X, Dilatometrías, Análisis Térmico Diferenciales y Termogravimétricos). En el marco de este estudio también se registraron los porcentajes de porosidad de muestras experimentales y de tiestos arqueológicos a través de una adaptación del Método de Arquímedes. El objetivo principal de este trabajo consiste en contrastar los resultados obtenidos de la manufactura de teselas/discos experimentales a partir de arcillas locales y su posterior cocción, con los datos térmicos obtenidos en tiestos arqueológicos con el fin de indagar en posibles temperaturas de cocción a las que fueron sometidas las cerámicas del área. Los resultados térmicos de las arcillas, de la experimentación y del material arqueológico presentan similitudes en las temperaturas máximas de cocción alcanzadas (< 950 °C) y en los difractogramas con relación a los minerales hallados. El porcentaje de porosidad es menor a 33% indicando el uso de arcillas porosas de baja temperatura.
Reflexões sobre os conceitos de Vygotsky no século XXI: A formação docente, o uso de ferramentas digitais e o sociointeracionismo nos espaços virtuais
Authors: Soares Marcos Eustáquio , Junior Edson Barbosa dos Santos , Silva Jacelino Batista da , Silva Ricardo Oliveira da , Jorcelino Tallyrand Moreira
Published: December 2024

O presente artigo objetiva discutir, no contexto da pandemia da COVID-19, a identificação, a validade e a aplicabilidade de alguns conceitos básicos da teoria sociointeracionista de Vygotsky na formação moderna dos professores, como a necessidade de letramento digital e o uso potencial das redes sociais como prática pedagógica rumo à efetivação da zona de desenvolvimento potencial dos indivíduos que habitam o ambiente educacional configurado no ciberespaço. O delineamento e a metodologia utilizados pelos autores foram a pesquisa qualitativa e o levantamento bibliográfico, respectivamente. Os autores finalizam o artigo concluindo que a teoria sociointeracionista de Vygotsky é aplicável à educação a distância e que as redes sociais são campos bastante promissores para a exploração pedagógica de zonas de desenvolvimento proximal tanto de alunos quanto de professores.
Comprehensive Nutrition Intervention with Omega-3 Fatty Acid, Micronutrient, and Probiotic-Enriched Regimens Improves Malnutrition in Patients with Head and Neck Cancers
Authors: Yeh Kun-Yun , Hsia Simon , Chang Pei-Hung , Wang Cheng-Hsu
Published: December 2024

Malnutrition is a common and unavoidable medical issue in patients with head and neck cancer during and after the treatment period, which deserves an intensive medical attention since nutrition status is often related with patients’ prognosis and treatment outcomes. In review of literature and our recent research, we found that an early and intensive nutrition intervention, including nasogastric tube feeding, minimized body weight loss, reduced treatmentinduced adverse effects, and increased survival benefits. Patients with BMI < 19 kg/m2 and were received the Ethanwell/Ethanzyme regimen enriched with omega-3 fatty acids, micronutrients, and probiotics showed significantly less body weight loss. Patients with the malnourished status at the time of 3 months after treatment completion showed early recurrence and had significant negative effect on overall survival. In conclusion, comprehensive nutrition intervention should be started as early as the treatment begins and be continued following therapy completion, in order to prevent or overcome malnutrition in patients with head and neck cancer.
Endoscopic Stricturotomy for Enteral Nutrition Access in Patients with Benign Gastrointestinal Strictures: a Review
Authors: Wang Yu Ping , Zhuang Ze Hao
Published: December 2024

Benign gastrointestinal stricture significantly restricts enteral nutrition, which directly affects the quality of life of patients. Advances in endoscopic techniques have provided a minimally invasive means of reconstructing the enteral nutrition pathway in patients with gastrointestinal strictures. Endoscopic stricturotomy is a safe and effective way to open the nutritional pathway, especially for those with anatomic stricture length < 1 cm, and can be used either as the primary choice of treatment for patients with gastrointestinal stricture or as rescue therapy for refractory cases. Endoscopic stricturotomy can be executed with radial incision and cutting or circular incision and cutting. After the stricturotomy, other endoscopic treatments, such as endoscopic balloon dilation, stent implantation, and intra-lesional injection of steroids, can be used to prevent the development of re-stricture. This article reviews the clinical experiences with endoscopic stricturotomy for opening strictures along the enteral nutrition pathway in patients with gastrointestinal strictures.
Construcción y Validación del Cuestionario de Experiencias de Breadcrumbing (CEB) para Adultos de Argentina
Authors: Simil Debbie
Published: December 2024

El breadcrumbing es un fenómeno relacional que implica un contacto intermitente de una persona hacia otra vía redes sociales, aparentando interés romántico, pero sin querer progresar en el vínculo. Frente a la falta de instrumentos que midan la experiencia de las víctimas de breadcrumbing, el presente estudio refleja la construcción del Cuestionario de Experiencias de Breadcrumbing. Además, se presentan los procedimientos de evaluación de validez de contenido (realizado por tres jueces expertos), de constructo (análisis factorial exploratorio) y de fiabilidad (alfa de Cronbach) en una muestra de 300 personas de 18 a 35 años residentes del Área Metropolitana de Buenos Aires. El instrumento consta de un total de once ítems dividido en tres dimensiones: experiencia, expectativa y emociones. Frente a los resultados expuestos, se concluye que el CEB es un instrumento válido y confiable para que los profesionales de la salud utilicen como herramienta de prevención y exploración.
Институциональное обеспечение развития креативной экономики в регионах Приволжского федерального округа
Authors: Кириллова С.А. , Орлова Д.С.
Published: December 2024

Целью исследования явился анализ развития креативной экономики в регионах Приволжского федерального округа с позиций ее институционального обеспечения. В процессе исследования проанализированы нормативные правовые акты, направленные на регулирование развития креативной экономики в регионах, а также институтов, созданных для инфраструктурной поддержки этого развития. Было установлено, что значительная дифференциация существующего нормативного правового обеспечения негативно сказывается на формировании и развитии креативных индустрий. Предложены меры по нивелированию сложившейся ситуации.

The purpose of the study was to analyze the development of the creative economy in the Volga Federal District regions from the standpoint of its institutional support. During the research, regulatory legal acts aimed at regulating the development of the creative economy in the regions, as well as institutions created to support this development in infrastructure, were analyzed. It was found that significant differentiation of the existing regulatory framework has a negative impact on the formation and development of creative industries. Measures have been proposed to level out the current situation.
Профессиональная ориентация молодежи как инструмент снижения кадрового дефицита на региональном рынке труда
Authors: Вишневская Н.Г. , Галина А.Э.
Published: December 2024

В статье рассматривается современное состояние рынка труда Республики Башкортостан, в том числе его молодежного сегмента. Приведены данные по изменению показателей занятости молодежи в период с 2020 по 2024 годы. Обозначены проблемы в сфере профессиональной ориентации, рассмотрены мероприятия государственного регулирования, направленные на улучшение ситуации на региональном рынке труда в условиях кадрового дефицита посредством совершенствования процесса самоопределения молодежи в выборе траектории карьерного развития.

The article examines the current state of the labor market of the Republic of Bashkortostan, including the youth segment. Data on changes in youth employment indicators in the period from 2020 to 2024 are presented. The problems in the field of professional orientation are identified, the measures of state regulation aimed at improving the situation on the regional labor market in conditions of personnel shortage by improving the process of self-determination of young people in choosing a career development trajectory are considered.