bluuebunny/crossref_metadata_2025 huggingface dataset:
Study on Phosphorus Variability Characteristics and Response Mechanism of Microbial Community during Sediment Resuspension Process
Authors: Zhang Bo , Liu Yujia , Yang Haoran , Ji Peng , Guo Yunyan
Published: October 2024

Submerged plants and related disturbances can affect both the phosphorus (P) release and the microbial communities in sediments. In this study, a sediment resuspension system was constructed, and P variability characteristics influenced by Vallisneria natans (V. natans) and the response mechanism of the microbial community were studied. The results indicated that the total phosphorus (TP) content increased from 678.875 to 1019.133 mg/kg and from 1126.017 to 1280.679 mg/kg in sediments and suspended solids (SSs) during the sediment resuspension process, respectively. Organic P (OP) increased by 127.344 mg/kg and 302.448 mg/kg in sediments and SSs after the disturbance, respectively. The microbial communities in the sediments and the leaves of V. natans had higher Chao values after the disturbance, while Shannon values decreased after the disturbance compared to the control in SSs. Proteobacteria had the highest abundance with the value of 51.1% after the disturbance in the sediments and SSs, and the abundance values of Proteobacteria in rhizomes and leaves of V. natans could reach 73.2% on average. Chloroflexi, Acidobacteria, and Firmicutes were also the main phyla in the sediment resuspension system. Sodium hydroxide extractable P (NaOH-P) in sediments could reduce the bioavailability of this P fraction under disturbance conditions. The decrease in the abundance of Bacteroidetes and Nitrospirae indicated that they were more sensitive to the disturbance, and the rotational speed changed the survival conditions for the Bacteroidetes and Nitrospirae. The response mechanism of microbial community during the sediment resuspension process could reflect the influence of the microbial community on the changing characteristics of P and could provide a theoretical foundation for P control at the micro level.
From Annular to Toroidal Pseudo Knots
Authors: Diamantis Ioannis , Lambropoulou Sofia , Mahmoudi Sonia
Published: October 2024

In this paper, we extend the theory of planar pseudo knots to the theories of annular and toroidal pseudo knots. Pseudo knots are defined as equivalence classes under Reidemeister-like moves of knot diagrams characterized by crossings with undefined over/under information. In the theories of annular and toroidal pseudo knots, we introduce their respective lifts to the solid and the thickened torus. Then, we interlink these theories by representing annular and toroidal pseudo knots as planar O-mixed and H-mixed pseudo links. We also explore the inclusion relations between planar, annular and toroidal pseudo knots, as well as of O-mixed and H-mixed pseudo links. Finally, we extend the planar weighted resolution set to annular and toroidal pseudo knots, defining new invariants for classifying pseudo knots and links in the solid and in the thickened torus.
Sustainability and Information Systems in the Context of Smart Business: A Systematic Review
Authors: Magableh Aws A. , Audeh Afnan Y. , Ghraibeh Lana L. , Akour Mohammed , Albahri Ahmed Shihab
Published: October 2024

In recent years, calls have increased for adherence to standards that ensure sustainability, including the global initiative presented by the United Nations with 17 Sustainable Development Goals (SDGs) to ensure a more sustainable future. Achieving these goals is extremely important, as institutions have sought to integrate technology, especially business intelligence, into their operations to ensure their achievement. This study aims to provide a systematic literature review of the intersection of information systems and sustainability in business intelligence. Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) methodology was utilized to select high-quality studies from various databases, including ScienceDirect, IEEE Xplore, and Scopus, to be included in this review. The methodology resulted in 32 studies taxonomized into four main categories covering different aspects of the intersection of information systems and sustainability. This study discusses integrating information systems and sustainability in various sectors, such as tourism, health, urban, and other sectors, with different technologies, such as Blockchain, IoT, Industry 4.0, and other innovations. Moreover, the information system types implemented to support sustainability practices in different domains are highlighted.
Photometry and Models of Seven Main-Belt Asteroids
Authors: Tian Jun , Zhao Haibin , Li Bin , Zhang Yongxiong , Chen Jian , Elenin Leonid , Lu Xiaoping
Published: October 2024

The China Near-Earth Object Survey Telescope (CNEOST) conducted four photometric surveys from 2015 to 2018 using image processing and aperture photometry techniques to obtain extensive light curve data on asteroids. The second-order Fourier series method was selected for its efficiency in determining the rotation periods of the observed asteroids. Our study successfully derived rotation periods for 892 asteroids, with 648 of those matching values recorded in the LCDB (for asteroids with U > 2). To enhance the reliability of the derived spin parameters and shape models, we also amassed a comprehensive collection of published light curve data supplemented by additional photometric observations on a targeted subset of asteroids conducted using multiple telescopes between 2021 and 2022. Through the application of convex inversion techniques, we successfully derived spin parameters and shape models for seven main-belt asteroids (MBAs): (2233) Kuznetsov, (2294) Andronikov, (2253) Espinette, (4796) Lewis, (1563) Noel, (2912) Lapalma, and (5150) Fellini. Our thorough analysis identified two credible orientations for the rotational poles of these MBAs, shedding light on the prevalent issue of “ambiguity in pole direction” that often accompanies photometric inversion processes. CNEOST continues its observational endeavors, and future collected data combined with other independent photometric measurements will facilitate further inversion to better constrain the spin parameters and yield more refined shape models.
Molecular Characterization and Genomic Surveillance of SARS-CoV-2 Lineages in Central India
Authors: Dwivedi Purna , Sharma Mukul , Ansari Afzal , Ghosh Arup , Bishwal Subasa C. , Ray Suman Kumar , Katiyar Manish , Kombiah Subbiah , Kumar Ashok , Sahare Lalit , Ukey Mahendra , Barde Pradip V. , Das Aparup , Singh Pushpendra
Published: October 2024

Since the first reported case of COVID-19 in December 2019, several SARS-CoV-2 variants have evolved, and some of them have shown higher transmissibility, becoming the prevalent strains. Genomic epidemiological investigations into strains from different time points, including the early stages of the pandemic, are very crucial for understanding the evolution and transmission patterns. Using whole-genome sequences, our study describes the early landscape of SARS-CoV-2 variants in central India retrospectively (including the first known occurrence of SARS-CoV-2 in Madhya Pradesh). We performed amplicon-based whole-genome sequencing of randomly selected SARS-CoV-2 isolates (n = 38) collected between 2020 and 2022 at state level VRDL, ICMR-NIRTH, Jabalpur, from 11899 RT-qPCR-positive samples. We observed the presence of five lineages, namely B.1, B.1.1, B.1.36.8, B.1.195, and B.6, in 19 genomes from the first wave cases and variants of concern (VOCs) lineages, i.e., B.1.617.2 (Delta) and BA.2.10 (Omicron) in the second wave cases. There was a shift in mutational pattern in the spike protein coding region of SRAS-CoV-2 strains from the second wave in contrast to the first wave. In the first wave of infections, we observed variations in the ORF1Ab region, and with the emergence of Delta lineages, the D614G mutation associated with an increase in infectivity became a prominent change. We have identified five immune escape variants in the S gene, P681R, P681H, L452R, Q57H, and N501Y, in the isolates collected during the second wave. Furthermore, these genomes were compared with 2160 complete genome sequences reported from central India that encompass 109 different SARS-CoV-2 lineages. Among them, VOC lineages Delta (28.93%) and Omicron (56.11%) were circulating predominantly in this region. This study provides useful insights into the genetic diversity of SARS-CoV-2 strains over the initial course of the COVID-19 pandemic in central India.
Double-Negative T-Cells during Acute Human Immunodeficiency Virus and Simian Immunodeficiency Virus Infections and Following Early Antiretroviral Therapy Initiation
Authors: Yero Alexis , Shi Tao , Clain Julien A. , Zghidi-Abouzid Ouafa , Racine Gina , Costiniuk Cecilia T. , Routy Jean-Pierre , Estaquier Jérôme , Jenabian Mohammad-Ali
Published: October 2024

HIV infection significantly affects the frequencies and functions of immunoregulatory CD3+CD4−CD8− double-negative (DN) T-cells, while the effect of early antiretroviral therapy (ART) initiation on these cells remains understudied. DN T-cell subsets were analyzed prospectively in 10 HIV+ individuals during acute infection and following early ART initiation compared to 20 HIV-uninfected controls. In this study, 21 Rhesus macaques (RMs) were SIV-infected, of which 13 were assessed during acute infection and 8 following ART initiation four days post-infection. DN T-cells and FoxP3+ DN Treg frequencies increased during acute HIV infection, which was not restored by ART. The expression of activation (HLA-DR/CD38), immune checkpoints (PD-1/CTLA-4), and senescence (CD28−CD57+) markers by DN T-cells and DN Tregs increased during acute infection and was not normalized by ART. In SIV-infected RMs, DN T-cells remained unchanged despite infection or ART, whereas DN Treg frequencies increased during acute SIV infection and were not restored by ART. Finally, frequencies of CD39+ DN Tregs increased during acute HIV and SIV infections and remained elevated despite ART. Altogether, acute HIV/SIV infections significantly changed DN T-cell and DN Treg frequencies and altered their immune phenotype, while these changes were not fully normalized by early ART, suggesting persistent HIV/SIV-induced immune dysregulation despite early ART initiation.
Analyzing Changes in Attitudes and Behaviors towards Seasonal Influenza Vaccination in Spain’s Adult Population over Three Seasons
Authors: Prada-García Camino , Toquero-Asensio Marina , Fernández-Espinilla Virginia , Hernán-García Cristina , Sanz-Muñoz Iván , Eiros Jose M. , Castrodeza-Sanz Javier
Published: October 2024

Background/Objectives: The experience of the COVID-19 pandemic has turned the spotlight on the importance of public health measures and disease prevention. Despite this, the acceptance of influenza vaccination has remained low in most countries (and far from the 75% target set by the World Health Organization). The objective of this study has been to investigate how attitudes and behaviors regarding influenza vaccination in the Spanish adult population have changed over the last three years (from 2021 to 2024) in order to analyze trends in influenza vaccination. Methods: To this end, a cross-sectional study was conducted through 2206 telephone interviews, and the results were compared with those obtained in previous campaigns. Results: The findings indicate a significant decline in overall vaccination intent. Healthcare professionals remain the most influential factor in encouraging vaccination, yet there is a notable increase in the lack of vaccine recommendations, contributing to the decision not to vaccinate. This study also reveals low awareness of the influenza vaccine campaign, emphasizing the need for improved public health communication. Conclusions: To counteract these trends, this study recommends intensifying awareness campaigns, strengthening the role of healthcare providers in vaccine advocacy, and tailoring communication strategies. These efforts are crucial to enhancing vaccination coverage and protecting vulnerable populations against influenza.
SARS-CoV-2 Vaccination in Patients with Cancer and COVID-19 in Mexico
Authors: Barrientos-Flores Corazón , Vilar-Compte Diana , Martínez-Rivera Nancy , Villaseñor-Echavarri Rodrigo , Martin-Onraet Alexandra
Published: October 2024

Objectives: Vaccination is the best preventive measure for SARS-CoV-2 infection; however, efficacy is lower in cancer patients. During the pandemic period, Mexico was characterized by the use of seven different COVID-19 vaccine platforms, and oncologic patients were not prioritized for vaccination. We report the outcomes of COVID-19 in cancer patients after the beginning of the national vaccine campaign in Mexico. Methods: All patients with cancer and COVID-19 diagnosed at Instituto Nacional de Cancerología from 14 February 2021 to 28 February 2022 were included. Primary outcomes were the proportion of individuals who required hospital admission and/or invasive mechanical ventilation, according to the vaccination status; 30-day mortality; the period of infection; and other cancer-related variables. Results: A total of 691 patients were included; 524 (76%) had solid tumors (STs), and 167 (24%) had hematologic malignancies (HMs). Patients infected in the first two periods, had lower rates of vaccination and higher rates of mortality and hospitalization compared to those infected in the Omicron period. In the multivariate analysis, vaccination status was independently associated with hospitalization in patients with STs (aOR 0.38, 95%CI 0.19–0.75, p = 0.005), but it was not associated with invasive mechanical ventilation and 30-day mortality. In those with HMs, vaccination status was not associated with any outcome; in this group, only recent chemotherapy and time of infection were associated with invasive ventilation. Conclusions: Vaccination significantly reduced hospital admissions in patients with STs. Infections occurring during the Omicron period were associated with improved outcomes in both ST and HM patients. Despite having a lesser impact in immunosuppressed patients, vaccination is an essential strategy, and access to vaccination campaigns in patients with cancer needs to be prioritized.
The Impact of Major Ecological Projects on the Water Yield of Mountain Basins, Northern China
Authors: Hou Xianglong , Shi Miwei , Zhao Jianguo , Meng Lingyao , Zhang Yan , Zhang Rongzhi , Yang Hui , Cao Jiansheng
Published: October 2024

Water yield, one of the most valuable and important ecological indicators, reflects the renewable capacity of regional water resources. The Taihang Mountains are a natural ecological barrier and an important source of water production for the North China Plain. Two large-scale projects involving returning farmland to forest and grassland have significantly changed the distribution of land use in the Taihang Mountains, and also affect the water production characteristics of the Taihang Mountains. Taking the Hutuo River Basin, a typical river in the Taihang Mountainous region, as the study area, the InVEST model is utilized to calculate the spatial and temporal changes in water yield capacity in the Hutuo River basin, and four scenarios were set to judge the impact of different ecological projects on the water yield of the mountainous watershed of the Hutuo River. The results showed that the water yield in the five study periods was 218.58–376.44 mm. The interannual variations in both precipitation and water yield of the study area in the last decade were large. The water yield is mainly concentrated in the northeast region of the upper reaches of the basin, and the smallest is the northwest and central regions of the upper reaches. The water yield in each year in the study area is mainly less than 400 mm, accounting for more than 60% of the study area, and the water yield has shown a large regional expansion in the past 10 years. Grassland has the largest water yield capacity of all land use types, and climate change has basically no effect on the water yield capacity of different land use types. The ecological project of returning farmland to forestland has a negative impact on the water yield capacity, whereas the water yield capacity increases after returning farmland to grassland. The water conservancy project of river training has a negative impact on the water yield capacity of the Hutuo River mountainous basin. The research results provide theoretical data for judging the relationship between vegetation restoration and water yield in mountainous watersheds, a scientific basis for evaluating the implementation effect of major projects, and strong data support for water resource management in the North China Plain.
Groundwater Recharge Response to Reduced Irrigation Pumping: Checkbook Irrigation and the Water Savings Payment Plan
Authors: Gibson Justin , Franz Trenton E. , Gilmore Troy , Heeren Derek , Gates John , Thomas Steve , Neale Christopher M. U.
Published: October 2024

Ongoing investments in irrigation technologies highlight the need to accurately estimate the longevity and magnitude of water savings at the watershed level to avoid the paradox of irrigation efficiency. This paradox arises when irrigation pumping exceeds crop water demand, leading to excess water that is not recovered by the watershed. Comprehensive water accounting from farm to watershed scales is challenging due to spatial variability and inadequate socio-hydrological data. We hypothesize that water savings are short term, as prior studies show rapid recharge responses to surface changes. Precise estimation of these time scales and water savings can aid water managers making decisions. In this study, we examined water savings at three 65-hectare sites in Nebraska with diverse soil textures, management practices, and groundwater depths. Surface geophysics effectively identified in-field variability in soil water content and water flux. A one-dimensional model showed an average 80% agreement with chloride mass balance estimates of deep drainage. Our findings indicate that groundwater response times are short and water savings are modest (1–3 years; 50–900 mm over 10 years) following a 120 mm/year reduction in pumping. However, sandy soils with shallow groundwater show minimal potential for water savings, suggesting limited effectiveness of irrigation efficiency programs in such regions.
Complementary Analysis and Performance Improvement of a Hydro-Wind Hybrid Power System
Authors: Jia Huiyang , Li Huanhuan , Zhang Zhiwang , Sun Weihua
Published: October 2024

Hydropower as a flexible regulation resource is a rare choice to suppress the ever-increasing penetration of wind power in electrical power systems. The complementary characteristics and performance improvement of a hydro–wind hybrid power system based on a mathematical model of the hybrid power system is studied in this paper. This established model takes into account the stochastic variation in wind speeds in the wind power subsystem and the hydraulic–mechanical–electrical coupling characteristics of the hydropower subsystem. The complementary analysis is conducted based on the evaluation variables outputted by the established model, such as the wind power, hydro-regulation power, hydraulic power, and frequency. To make full use of the regulation capability of the hydropower system, the optimization of parameter settings is also carried out to improve complementary performances of the hybrid power system. The results from the complementary analysis show the detailed characteristics of hydro–wind coordinated operation under different types of real wind speeds. Here, 95% of installed hydro-capacity is used to complement the power shortage of the intermittent wind energy under the low wind speed. Alternatively, only around 66% of the installed hydro-capacity can be utilized to cope with the fluctuation in wind power under the medium and high wind speeds before the optimization of parameter settings. The recommended values and change rules of the control, hydraulic, and electrical parameters for the hydropower system are subsequently revealed from the analysis of parameter settings to contribute to a stable and safe hybrid power system. The results show that the optimized parameter can increase the maximal regulating capacity of the hydropower system by nearly 9 MW, approximately a sixth of the total installed hydropower capacity. The method and results obtained in this paper provide theoretical and technical guidance for the safe and economical operation of power stations.
Exploring the Drivers Influencing Multidimensional Alpha and Beta Diversity of Macroinvertebrates in Mountain Streams
Authors: Li Shudan , Wang Xingzhong , Tan Lu , Cai Qinghua
Published: October 2024

Understanding the driving mechanisms of diversity across multiple dimensions is a fundamental task in biodiversity conservation. Here, we examined the alpha and beta diversity of macroinvertebrates in the taxonomic, functional, and phylogenetic dimensions in mountain streams of northwestern Hubei Province, China. We also assessed how much local environmental, land use, climatic, and spatial variables affected these diversities. We found that (1) there were generally weak or no correlations of alpha and beta diversity between taxonomic, functional, and phylogenetic dimensions; (2) compared to both functional and phylogenetic beta diversity, which was mainly determined by nestedness, taxonomic beta diversity was mostly molded by turnover and was much higher; and (3) local environmental variables predominantly influenced taxonomic and functional dimensions of alpha and beta diversity, while spatial factors primarily drove phylogenetic dimension. These results suggest that regulating local habitats is crucial for lotic biodiversity conservation efforts, though spatial processes cannot be overlooked. Furthermore, our findings verify the supplemental role of functional and phylogenetic data in enriching insights provided by taxonomic data alone. This underscores the importance of a multidimensional approach for a more nuanced understanding of community assembly mechanisms, which is crucial for efficient ecosystem management and biodiversity conservation.
Ecological Compensation Based on the Ecosystem Service Value: A Case Study of the Xin’an River Basin in China
Authors: Chen Yuanhua , Wu Qinglian , Guo Liang
Published: October 2024

To establish a sound ecological compensation (EC) mechanism in the Xin’an River Basin, this study suggested utilizing ecosystem service valuation to determine the compensation amount. In this study, the first step was to establish a reasonable watershed EC model using the ecological compensation supply coefficient (ECSC) based on the value spillover theory (VST) of the ecosystem services and the ecological compensation demand coefficient (ECDC). The second step was to classify the ecosystem services of the Xin’an River Basin into three categories, including supply service, regulating service, and cultural service, with 14 specific functions to determine the ecological compensation standard accounting scope in these services. Then, a case study on the Xin’an River Basin for EC standards was presented. The total ecosystem service value (ESV) in the Xin’an River Basin was estimated to be CNY 70.271 billion, with supply service accounting for 22.7%, regulating service accounting for 24.6%, and cultural service accounting for 52.7%. Based on the compensation scope, the ecosystem service values for the upper and lower limits of the EC were calculated as CNY 57.779 billion and CNY 17.292 billion. Combined with the results of the ECSC and ECDC, the upper and lower limits of the EC standard in the Xin’an River Basin were computed to be CNY 4.085 billion and CNY 1.438 billion, respectively. Therefore, the ESV-based EC model for the Xin’an River Basin can effectively address the challenge of inadequate EC in the watershed. It also facilitates balanced regional development and serves as a theoretical foundation and empirical evidence for the government to establish a unified national policy on cross-border river basin ecological compensation.
Dynamic Wireless Charging of Electric Vehicles Using PV Units in Highways
Authors: Megahed Tamer F. , Mansour Diaa-Eldin A. , Nayebare Donart , Kotb Mohamed F. , Fares Ahmed , Hameed Ibrahim A. , El-Hussieny Haitham
Published: October 2024

Transitioning from petrol or gas vehicles to electric vehicles (EVs) poses significant challenges in reducing emissions, lowering operational costs, and improving energy storage. Wireless charging EVs offer promising solutions to wired charging limitations such as restricted travel range and lengthy charging times. This paper presents a comprehensive approach to address the challenges of wireless power transfer (WPT) for EVs by optimizing coupling frequency and coil design to enhance efficiency while minimizing electromagnetic interference (EMI) and heat generation. A novel coil design and adaptive hardware are proposed to improve power transfer efficiency (PTE) by defining the optimal magnetic resonant coupling WPT and mitigating coil misalignment, which is considered a significant barrier to the widespread adoption of WPT for EVs. A new methodology for designing and arranging roadside lanes and facilities for dynamic wireless charging (DWC) of EVs is introduced. This includes the optimization of transmitter coils (TCs), receiving coils (RCs), compensation circuits, and high-frequency inverters/converters using the partial differential equation toolbox (pdetool). The integration of wireless charging systems with smart grid technology is explored to enhance energy distribution and reduce peak load issues. The paper proposes a DWC system with multiple segmented transmitters integrated with adaptive renewable photovoltaic (PV) units and a battery system using the utility main grid as a backup. The design process includes the determination of the required PV array capacity, station battery sizing, and inverters/converters to ensure maximum power point tracking (MPPT). To validate the proposed system, it was tested in two scenarios: charging a single EV at different speeds and simultaneously charging two EVs over a 1 km stretch with a 50 kW system, achieving a total range of 500 km. Experimental validation was performed through real-time simulation and hardware tests using an OPAL-RT platform, demonstrating a power transfer efficiency of 90.7%, thus confirming the scalability and feasibility of the system for future EV infrastructure.
Optimization Control Strategy for Light Load Efficiency of Four-Switch Buck-Boost Converter
Authors: Gao Siyuan , Zhang Fanghua , Mei Hongxin
Published: October 2024

The four-switch buck-boost (FSBB) converter usually adopts a pseudo-continuous conduction mode (PCCM) soft switching (ZVS) control strategy, but there is a problem with the low efficiency of FSBB converters under light loads. Firstly, the constraints that the control variables of the FSBB converter need to satisfy are analyzed, and it is pointed out that the fixed frequency constraint is not necessary. Then, the switching frequency is used to control the degree of freedom, and the quantitative relationship between the FSBB converter loss and the switching frequency is obtained. Finally, for different input voltages and loads, the switching frequency corresponding to the minimum power loss is calculated offline. By optimizing the switching frequency, the light-load efficiency of the FSBB converter is improved. A prototype with an input voltage range of 210 V–330 V, an output voltage of 270 V, and an output power of 3 kW was developed. The loss was reduced by 15% at 20% load, and the peak efficiency of the converter reached 99.23%. The experimental results verified the effectiveness of the proposed control strategy.
High voltage formation using the amplifiers cascading method
Authors: Dovhal Artem , Tuz Ylian
Published: October 2024

The dividing of high voltage broadband non-inverting cascade amplifiers into separate cascades, each of which has independent power sources, is suggested. These cascades are connected to one another in series, switching on the operational amplifiers and the feedback links. The gain of each cascade is determined by the non-inverting scheme of feedback that assures accurate signal processing. To provide stable and effective functioning, the operational amplifiers are supplied with power from transistor repeaters. That assures the required feeding voltage levels. Due to the thorough selection of the gain factor and feeding source voltage, the amplifier system achieves the expended output voltage range.
PEMBERIAN MINUMAN YOGA (YOGHURT BUAH NAGA) DAN SUSU LOW FAT TERHADAP PENURUNAN KADAR KOLESTEROL TOTAL
Authors: Trigustini Maya , Siregar Afriyana , Sriwiyanti Sriwiyanti , Susyani Susyani , Muzakar Muzakar
Published: October 2024

Penyakit kardiovaskuler cenderung meningkat sebagai penyebab kematian. Salah satu faktor risiko terjadinya penyakit kardiovaskuler adalah hiperkolesterolemia yang disebabkan oleh gangguan metabolisme lemak yang ditandai dengan peningkatan kadar kolesterol total hingga > 200 mg/dl. Upaya pengendalian kadar kolesterol melalui pengaturan diet yang merupakan terapi yang lebih aman dari terapi obat. Untuk mengetahui perbedaan pemberian minuman yoga (yoghurt buah naga) dan susu low fat pada penurunan kadar kolesterol total karyawan RSU Sriwijaya. Jenis penelitian ini adalah penelitian kuantitatif dengan desain quasi eksperimen. Rancangan yang digunakan dalam penelitian ini adalah menggunakan pre dan post-test with two group. Kelompok perlakuan mendapatkan minuman yoga sebanyak 2x/hari selama 14 hari sebanyak 100ml sedangkan pada kelompok pembanding mendapatkan minuman susu low fat sebanyak 1x/hari selama 14 hari sebanyak 100 ml. Besaran sampel pada penelitian ini sebanyak 30 responden untuk kelompok perlakuan dan 30 responden untuk pembanding jadi total sampel sebanyak 60 responden. Pengambilan sampel dilakukan sengan cara teknik sampling purposive. Analisa data ini menggunakan dependent t-test (uji t-dependen). Hasil uji statistik (Uji t-dependen) dengan p-value 0,000 (< 0,05), rata-rata penurunan kadar kolesterol total pada kelompok perlakuan dan kelompok kontrol yaitu 17,8 mg/dL yang menunjukkan bahwa ada pengaruh pemberian minuman Yoga (yoghurt buah naga) terhadap penurunan kadar kolesterol total. Minuman Yoga (yoghurt buah naga) yang memiliki kadar antosianin sebesar 4,88 mg/kg dan serat sebesar 1,00% dapat menurunkan kadar kolesterol total pada karyawan RSU Sriwijaya.
Pemanfaatan Limbah Kulit Pisang Kepok untuk Produksi Bioetanol dengan Proses Hidrolisis Asam Klorida
Authors: Wahyu Kurniawati Mukasi , Ulma Zeni , Alfian Arya Pratama Prayuda
Published: October 2024

To reduce the environmental impact of petroleum-based materials, alternative materials such as bioethanol are used, although in small quantities. The second generation bioethanol is produced from biomass originating from hemicellulose-producing bacteria and bound by lignin, namely Kepok banana peel waste. The aim of this research is to find out whether Kepok banana peel waste can be an alternative raw material for making bioethanol using the hydrochloric acid hydrolysis method, which is a good method for the process of making bioethanol from banana peel waste. The process in this research uses two stages, namely the pretreatment stage and the hydrolysis process stage. Lignin is dried through a chemical delignification process, namely by soaking banana peel shells in 10% NaOH solution with a mass ratio of 1:6 (w/v) for 12 hours. After the raw materials are delignified, their contents are tested using the Chesson Datta method. The 10% NaOH delignification method was able to reduce lignin levels in Kepok bananas (36.6%), hemicellulose (11.1%), and cellulose levels (62.8%). The fermentation process uses a starter made from bread yeast with a concentration of 1.4%, urea nutrition with a concentration of 1%, and NPK nutritional variations of 0.6%, 0.8% and 1.0% for three days. The substrate has a volume of 150 ml and is then allowed to ferment until it is no longer thick. The best Kepok banana peel bioethanol (6.5%) in a volume of 17ml comes from NPK (0.8%), the final result is that Kepok banana peel waste can be an alternative to bioethanol.
Научные основы поиска технических решений дальних водяных струй.
Authors: Амельчугов С.П. , Батуро А.Н. , Симоненко А.С. , Негин В.А.
Published: October 2024

В статье анализируются ключевые принципы защиты населенных пунктов, промышленных объектов и специальных территорий от лесных и ландшафтных пожаров. Рассмотрены подходы к организации эффективной защиты, включающие тесное взаимодействие с местными органами власти, создание пожарных команд и использование имеющихся сил и средств пожаротушения. Особое внимание уделяется применению авиации малой и средней грузоподъемности, включая вертолеты с водосливными устройствами, а также специализированные самолеты, такие как ИЛ-76 и БЕ-200, для активного тушения пожаров. Одной из перспективных технологий является использование беспилотных летательных систем (БПЛА), однако их широкое внедрение сдерживается отсутствием нормативно-правовой базы и недостаточной изученностью параметров подачи огнетушащих веществ, таких как вода. В статье приведены расчеты, позволяющие определить объем огнетушащих средств, необходимых для тушения пожара с помощью БПЛА, и даны рекомендации по их оптимизации. Также обсуждаются задачи, связанные с повышением эффективности подачи воды и возможностью использования добавок к воде для увеличения результативности тушения. Представленные результаты могут быть основой для дальнейшего развития технологий пожаротушения с участием БПЛА.

The article analyzes the main principles of protection of settlements, industrial facilities and special territories against forest and landscape fires. Approaches to the organization of effective protection are considered, including close cooperation with local authorities, creation of firefighting teams and use of available firefighting forces and means. Special attention is given to the use of small and medium sized aircrafts, including helicopters with water dropping devices, as well as specialized aircraft, such as IL-76 and BE-200, for active firefighting. One of the promising technologies is the use of unmanned aerial systems (UAS), but their widespread implementation is hampered by the lack of a regulatory framework and insufficient study of the parameters of delivery of extinguishing agents such as water. This paper presents calculations to determine the amount of extinguishing agent required for firefighting with UAVs and provides recommendations for their optimization. It also discusses the challenges associated with improving the efficiency of water delivery and the possibility of using water additives to increase extinguishing performance. The results presented can serve as a basis for further development of firefighting technologies using UAS.
Оценка и анализ территориальных рисков здоровью населения от влияния климатических факторов
Authors: Тасейко О.В.
Published: October 2024

Предложена модель оценки риска повышения смертности населения от воздействия температурных волн. Модель учитывает вероятности возникновения волн жары и холода, уровень медицинского обслуживания, половозрастную структуру и показатели заболеваемости населения. С учетом локальных климатических особенностей городов Красноярского края наиболее высокие показатели риска от воздействия температурных волн обоих групп получены для городов Ачинск, Минусинск и Назарово, наименьшие значения рисков получены для населения городов Красноярск, Бородино, Боготол. Предложенная в работе модель оценки рисков здоровью населения от воздействия температурных волн может быть встроена в систему управления здоровьем населения на региональном и муниципальном уровнях.

This article proposes the model for assessment of risk mortality caused be temperature waves. The model takes into account the probability of occurrence of heat and cold waves, the level of medical care, the age and gender structure, and morbidity rates of the population. Taking into account the local climatic features of the cities of Krasnoyarsk Krai, the highest risk rates from exposure to temperature waves of both groups were obtained for the cities of Achinsk, Minusinsk, and Nazarovo, the lowest risk values were obtained for the population of the cities of Krasnoyarsk, Borodino, and Bogotol. The model for assessing health risks to population from exposure to temperature waves proposed in the work can be integrated into the health management system of the population at the regional and municipal levels.
Моделирование процесса формирования и скопления взрывоопасных газов в рабочих зонах угольных шахт
Authors: Скрипник И.Л. , Савельев Д.В. , Каверзнева Т.Т. , Ивахнюк С.Г.
Published: October 2024

Представлены основы методологического подхода к решению проблемы создания безопасных условий ведения подземных горных работ на основе моделирования процесса формирования и скопления метана в рабочих зонах угольных шахт, с учетом требований нормативных документов в предметной области. Разработка метода осуществлялась с использованием данных натурных (прикладных/практических) экспериментов полученных на нескольких шахтах Печорского угольного бассейна. Определение мест скопления метана, осуществлялось в прикладных программных комплексах FlowVision и SolidWorks Flow Simulation. Сравнительный анализ полученных результатов моделирования в упомянутых выше программах позволяет сделать вывод о практической сходимости полученных результатов при задании идентичных граничных и начальных условий на входе в модель. По результатам полученных данных высказано предположение о влиянии на процесс формирования мест скоплений метана горношахтного оборудования.

The fundamentals of a methodological approach to solving the problem of creating safe conditions for underground mining are presented based on modeling the process of formation and accumulation of methane in working areas of coal mines, taking into account the requirements of regulatory documents in the subject area. The development of the method was carried out using data from field (applied/practical) experiments obtained at several mines of the Pechora coal basin. Determination of methane accumulation locations was carried out using the FlowVision and SolidWorks Flow Simulation application software systems. A comparative analysis of the obtained simulation results in the above-mentioned programs allows us to conclude that the results obtained are practically convergent when identical boundary and initial conditions are specified at the input to the model. Based on the results of the data obtained, it was suggested that mining equipment influences the process of formation of methane accumulation sites.
Модель и алгоритмы распределения внутренних ресурсов в организационной системе
Authors: Григорьева М.П. , Кружкова О.В. , Кузнецова Е.С.
Published: October 2024

Рассмотрены механизмы распределения государственных ресурсов на содержание федеральных органов исполнительной власти в сложных условиях несбалансированности бюджетов и оптимизации финансирования для исполнения бюджетных полномочий в полном объеме, не снижая качества предоставления государственных услуг. Предложены модель и алгоритмы распределения ресурсов территориального органа федерального органа исполнительной власти (ФОИВ) на примере МЧС России. Авторами рассмотрены ключевые особенности планирования и распределения ресурсов при осуществлении основных видов деятельности. В рамках исследования разработаны алгоритм планирования ресурсов на содержание территориального органа МЧС России, алгоритм распределения ресурсов на материально-техническое обеспечение, алгоритм распределения ресурсов в целях стимулирования личного состава, алгоритм планирования и проведения закупок. Разработанные алгоритмы становятся основой модели процесса распределения ресурсов на содержание территориального органа МЧС России. Разработанная модель учитывает механизмы оптимального распределения ресурсов на основе математических моделей приоритетов и позволяет решать различные задачи оптимизации ресурсов по выбранной стратегии.

The article considered mechanisms of allocation of state resources for the maintenance of federal executive authorities in the context of budget sequestration and optimization of financing for the full implementation of budgetary powers without reducing the quality of public services. A model and algorithms for the allocation of resources of a territorial body of the federal executive authority (FOIV) are proposed using the example of Emercom of Russia. The authors consider the key features of resource planning and allocation in the implementation of the main types of activities. As part of the study, an algorithm for resource planning for the maintenance of the Main Directorate of Emercom of Russia in the subject of Russian Federation, an algorithm for allocating resources for the maintenance of equipment, an algorithm for allocating resources to stimulate personnel, an algorithm for planning and conducting purchases were developed. All the described algorithms become the basis for the model of resources allocating process for the maintenance of a territorial body of federal executive authorities on the example of the Main Directorate of Emercom of Russia for a subject of Russian Federation. The developed model takes into account the mechanisms of optimal resource allocation based on mathematical models of priorities and allows solving various tasks of optimizing resources according to the chosen strategy.
Показатели эффективности противопожарной защиты в регионах
Authors: Джалолов А.Ш.
Published: October 2024

В настоящее время актуальными являются вопросы поддержки принятия решений при проблемном мониторинге состояния различных сфер деятельности в регионах (например, обеспечения безопасности критически важных объектов, распределения ресурсов, оценки эффективности противопожарной защиты). При оценке ситуации в регионе учитывают разноплановую информацию, которая влияет на качество жизни населения. Собранные статистические данные характеризуют различные региональные процессы, в том числе, связанные с экономикой, финансами, окружающей средой, здоровьем и безопасностью людей, технологической средой. В статье основное внимание уделено оценке эффективности противопожарной защиты. Подчеркнуто, что знание текущей оценки состояния региона позволяет прогнозировать его развитие, в том числе в условиях возможных чрезвычайных ситуаций техногенного и природного характера.

Currently, the issues of decision support in problematic monitoring of the state of various spheres of activity in the regions (for example, ensuring the safety of critical facilities, resource allocation, assessing the effectiveness of fire protection) are relevant. When assessing the situation in the region, diverse information is taken into account that affects the quality of life of the population. The collected statistical data characterize various regional processes, including those related to the economy, finance, the environment, human health and safety, and the technological environment. The article focuses on assessing the effectiveness of fire protection. It is emphasized that knowledge of the current assessment of the state of the region allows predicting its development, including in the context of possible emergency situations of man-made and natural origin.
Aylık Su Talebinin Tahmininde Veri Büyüklüğünün Etkisinin Değerlendirilmesi; Ankara (Etimesgut) Örneği
Authors: Aybuğa Kamil , Yücel Işıldar Gamze
Published: October 2024

Kentsel su yönetiminin planlama ve işletme süreçlerine yönelik en önemli adımı, talep tahminidir. Su talebinin kestirimi, birbirinden çok farklı yöntemlerle ortaya konulabilen bir dizi tahminden oluşmaktadır. Genel olarak literatürde pek çok yöntem ile karşılaşılmaktadır. Ancak bu yöntemlerin kestirim gücü ve açıklayıcılık düzeyi verilerin miktarı ve zamansal çözünürlüğü gibi unsurlarla ilişkili biçimde değişkenlik göstermektedir. Özellikle tek değişkenli (sadece zaman serisi kullanılan) analizlerde uygun miktarda veriler kullanılması gerekmektedir.
Bu araştırmada, zaman serisi analizinde veri ön işleme ve kestirim yöntemi olarak da kullanılabilen veri düzleştirme (smoothing) yöntemlerinin aylık su talebinin kestirimindeki etkinliği ve doğru tahminler üretilmesi için gerekli veri büyüklüğü ele alınmıştır. Bu maksatla, Ankara İline ait aylık su tüketim verilerine WMA, EMA, LTP, QTP, Holt DES yöntemleri uygulanarak tahmin konusundaki etkinlikleri değerlendirilmiştir. Elde edilen bulgulara göre, aylık düzeyde su talebinin tahmininde klasik zaman serisi düzleştirme yöntemlerinin kestirim gücünün; serilerin hangi matematiksel modele uyduğu, verilerin büyüklüğü ve mevsimsellik gibi nedenlerle ortaya çıkan varyasyonlar gibi nedenlerle ilişkili şekilde değiştiği ve yüksek doğrulukta tahminler üretilmesi konusunda her yöntem için farklı veri büyüklüğüne ihtiyaç duyulabileceği anlaşılmaktadır.
Gender Involvement in Municipal Solid Waste Management in Nigeria: a review of Perceptions, Practices, and Challenges
Authors: ADEOYE Dorcas Oluwaseyi , OJOLOWO Saheed , OJO OlumuyiwaIdowu
Published: October 2024

Solid waste management practice focused on the technical issues of waste disposal with little or no attention paid to the gender involved. Solid waste management needs women participation to be effective as gender activities play an important role in solid waste management as there is clear understanding of the perceptions of both men and women that is required in waste management. This paper review gender involvement in solid waste management in identify the specific roles, perceptions, values, attitudes, and practices of women in relation to solid waste management, as well as the issues and constraints that hinder their active participation. Studies showed that there is a relationship between women socio-economic status and solid waste management. Despite their crucial contributions; women are often relegated to the background in decision-making processes and policy implementation. The paper highlighted the importance of incorporating gender considerations into municipal solid waste management policies and practices to achieve greater equality and sustainability.Some recommendations were made to improve gender involvement in solid waste management.
The Analysis of Influential Factors on the Delay of Dredging Work at Rebaq Rinding River Line in Kutai Kertanegara Regency, Indonesia
Authors: Aswari Deni , Mulyadi Lalu , Wulandari Lies K.
Published: October 2024

Along with fast progress of industrial world, particularly in the building construction project which also increasing rapidly, the difficulty level in managing and implementing construction projects also rising where the higher the difficulty the longer the time required to complete the project. A delay in work implementation is evident from the work package of Dredging Work Project for Rebaq Rinding River at Muara Muntai District of Kutai Kertanegara Regency. Thus, this research was performed to determine factors that influence project delays. The selected data analysis method was a factor analysis and multiple linear regression analysis from the questionnaire answers that distributed to 45 respondents ranging from the service users, contractors, and consultants involved in the Dredging Work Project in Rebaq Rinding River at Muara Muntai District of Kutai Kertanegara Regency which experienced delays. According to the result of this research, factor that has significant influence to project delays is factor of Work Implementation Method with value of tcount = 3.162 > from ttable = 2.028, and based on T test, it was found that the most dominant factor is the factor of Work Implementation Method with ß value = 0.646. The strategy used in dealing with project delays are: prior to the beginning of work implementation, implementation schedule must be prepared in accordance with the rational work stages and the work stages implementation must follow the planned method.