bluuebunny/crossref_metadata_2025 huggingface dataset:
Optimization and antifungal efficacy against brown rot fungi of combined Salvia rosmarinus and Cedrus atlantica essential oils encapsulated in Gum Arabic
Authors: Annemer Saoussan , Ez-zoubi Amine , Ez zoubi Yassine , Satrani Badr , Stambouli Hamid , Assouguem Amine , Ullah Riaz , Bouayoun Taoufik , Fettoukh Nezha , Farah Abdellah
Published: November 2023

The stability, sensitivity, and volatility of essential oils are some of their most serious limitations, and nanoencapsulation has been considered one of the most effective techniques for solving these problems. This research aimed to investigate the incorporation of Salvia rosmarinus Speen and Cedrus atlantica Manetti (MEO) essential oil mixture in Gum Arabic (GA) and to evaluate nanoencapsulation’s ability to promote antifungal activity against two brown rot fungi responsible for wood decay Gloeophyllum trabeum and Poria placenta. The optimization of encapsulation efficiency was performed using response surface methodology (RSM) with two parameters: solid-to-solid (MEO/GA ratio) and solid-to-liquid (MEO/ethanol). The recovered powder characterization was followed by various techniques using a scanning electron microscope (SEM), X-ray diffractometry (XRD), dynamic light scattering (DLS), Fourier transform infrared spectroscopy (FTIR), and thermo-gravimetric analysis (TGA). The optimal nanoencapsulating conditions obtained from RSM were ratios of MEO/GA of 1:10 (w/w) and MEO/ethanol of 10% (v/v), which provided the greatest encapsulation efficiency (87%). The results of SEM, XRD, DLS, FTIR, and TGA showed that the encapsulation of MEO using GA modified particle form and molecular structure and increased thermal stability. An antifungal activity assay indicated that an effective concentration of MEO had an inhibitory effect on brown rot fungi. It had 50% of the maximal effect (EC50) value of 5.15 ± 0.88 µg/mL and 12.63 ± 0.65 µg/mL for G. trabeum and P. placenta, respectively. Therefore, this product has a great potential as a natural wood preservative for sustainable construction and green building.
Sociodemographic characteristics of healthy volunteers along with their experience, attitude and concerns of clinical trials in Wuhan, China
Authors: Yu Hengyi , Fang Yinian , Qi Xinxin , Wang Kaifu , Lei Yongfang , Zhang Donglin , Chen Qian , Liu Dong , Ren Xiuhua
Published: November 2023

China has became the world’s second largest pharmaceutical market, and the number of her registered clinical trials exceeded 3000 in 2021. Although thousands of healthy volunteers are participating in a large number of clinical trials in this country, there is no report about the characteristics, recognition, attitude of Chinese healthy volunteers and their concerns of clinical trials. A questionnaire survey was designed and given to 324 healthy volunteers participating in clinical trials in Wuhan, China. Four important findings emerged from our data. First, young, single and less educated men constituted the majority of Chinese healthy volunteers. Second, differences between the male and female healthy volunteers were observed. Female healthy volunteers are supposed to face more challenges and pressure in life, be more cautious about the clinical trials and more concerned about their health and feelings than the male. Third, no sociodemographic characteristic was associated with poorly understanding of the protocol research content, which was subjectively evaluated. Fourth, more support from society/family and more positive media reports about the participation of healthy volunteers in clinical trials are badly needed. These findings would help us to get a better understanding of Chinese healthy volunteers as a group for protecting them and promoting drug development.
Construction of a point-of-care electrochemical biosensor for Escherichia coli 16S rRNA analysis based on MoS2 nanoprobes
Authors: Yuwen Lihui , Li Xinyi , Wu Liquan , Luo Yi , Su Shao
Published: November 2023

A point-of-care electrochemical biosensor was designed for Escherichia coli 16S rRNA analysis by coupling a screen-printed carbon electrode and MoS2-based nanoprobes with high sensitivity and selectivity.
Photocatalytic C–N bond construction toward high-value nitrogenous chemicals
Authors: Li Jie , Liu Tengyu , Singh Nittan , Huang Zhuochun , Ding Yan , Huang Jinshu , Sudarsanam Putla , Li Hu
Published: November 2023

This review focuses on potential photocatalytic protocols developed for the construction of robust carbon–nitrogen bonds in discrepant activation environments to produce high-value nitrogenous chemicals.
Optoelectronic properties of octahedral molybdenum cluster-based materials at a single crystal level
Authors: Segura-Sanchis Elena , Moreno Ana , Ramiro-Manzano Fernando , Fenollosa Roberto , Feliz Marta , Atienzar Pedro
Published: November 2023

The determination of the photocurrent and photoluminescence properties of single crystals composed by an H-bonded network of hydroxo Mo6X8 (X = Br, Cl) clusters, makes these materials promising in optoelectronics, sensing and photocatalysis.
A combination of organic and inorganic cations in the synthesis of transition metal nitrates: preparation and characterization of canted rectangular Ising antiferromagnet (PyH)CsCo2(NO3)6
Authors: Vorobyova A. A. , Lyssenko K. A. , Chistyakov G. D. , Morozov I. V. , Ovchenkov Y. A. , Vasilchikova T. M. , Koo H.-J. , Whangbo M.-H. , Volkova O. S. , Vasiliev A. N.
Published: November 2023

Pyridinium cesium cobalt nitrate, (PyH)CsCo2(NO3)6, is a quasi-two-dimensional Ising magnet, which undergoes a long-range antiferromagnetic ordering. The use of both organic and inorganic cations is a promising way to search for new magnetic materials.
Two pairs of chiral YbIII enantiomers presenting distinct NIR luminescence and circularly polarized luminescence performances with giant differences in second-harmonic generation responses
Authors: Du Xiaodi , Zhang Zhiqiang , Gao Congli , Li Fengcai , Li Xi-Li
Published: November 2023

We demonstrate that chiral mononuclear YbIII enantiomers have better NIR-PL, CPL and SHG performances than chiral cocrystal ones.
Cu and Ni dual-doped ZnO nanostructures templated by cellulose nanofibrils for the boosted visible-light photocatalytic degradation of wastewater pollutants
Authors: Yu Jiangang , Bao Pingnian , Liu Jia , Jin Yi , Li Jie , Lv Yanwen
Published: November 2023

Cu and Ni dual-doped nano-ZnO particles immobilized on cellulose nanofibrils were developed for boosting the photocatalytic performance towards the degradation of various wastewater pollutants under blue light irradiation.
Rapid determination of V isotopes with MC-ICP-MS: new developments in sample purification
Authors: Zeng Zhen , Wu Fei
Published: November 2023

The new purification procedure for V isotope analysis presented in this work is both economical and time-efficient, improving the ability for further investigation of V isotope geochemistry in various geological and environmental systems.
Machine learning for the regulation strategy and mechanism of the integrated growth of carbon nanotube arrays
Authors: Chu Dianming , Ji Zongchao , Zhang Xijun , Zhao Xinyue , He Yan , Bai Wenjuan
Published: November 2023

Carbon nanotube (CNT) arrays are an attractive material, and achieving their low-cost and controllable growth is a difficult task.
One-pot synthesis of γ-lactams from ketoaziridines
Authors: Martelli Lorena S. R. , da Silva Otavio A. M. , Zukerman-Schpector Julio , Corrêa Arlene G.
Published: November 2023

New γ-lactams were obtained in a one-pot procedure from ketoaziridines in moderate to good overall yields.
Recent advances in radical thiocyanation cyclization or spirocyclization reactions
Authors: Yan Qinqin , Chen Shiliu , Fan Jie , Li Zejiang
Published: November 2023

Efficient radical thiocyanation cyclization/spirocyclization of unsaturated substrates to access diverse heterocycle/spirocycle-featured thiocyanates.
Prolate spheroidal polystyrene nanoparticles: matrix assisted synthesis, interface properties, and scattering analysis
Authors: Benke Dominik , Feller Tanja , Krüsmann Marcel , Neuhöfer Anna M. , Ganster Friederike , Karg Matthias , Retsch Markus
Published: November 2023

Employing various analytical techniques, we provide fundamental insights into the fabrication and properties of spheroidal polymer nanoparticles.
Three-Year Program Evaluation of a University–Public School Collaborative Partnership
Authors: Koutsoftas Anthony D. , Maffucci Dawn , Dayalu Vikram N.
Published: November 2023

Purpose:

This clinical focus article reports on an innovative program that provides classroom-based speech and language services to school children receiving speech-language therapy while addressing the need for clinical placements for graduate students in speech-language pathology. This program evaluation report centers around the logic model used to develop and implement the program.

Method:

The program was implemented in partnership between a university program in speech-language pathology and a nearby school district. The program took place in two different schools within the district, each with one state licensed and American Speech-Language-Hearing Association–certified speech-language pathologist (SLP) who supervised two or three graduate student interns per year of the project for a total of 17 graduate students over 3 years. Data sources for this program evaluation included child-level data collected by graduate student interns, teacher satisfaction surveys, and semistructured interviews.

Results:

Program stakeholders including graduate student interns, speech-language pathology supervisors, and the school district administrator provided converging positive feedback about the program implementation. This was corroborated by favorable ratings from teachers who collaborated with graduate student interns and an increase in the number of classroom-based intervention hours for school children receiving speech-language services.

Conclusions:

The short-, medium-, and long-term outcomes of the program's logic model were achieved in part or fully as supported by data sources used for program evaluation procedures. Clinical implications are provided about the need for innovation in school-based services with a focus on collaborative classroom-based intervention.
Robust model reference tracking control for high‐order descriptor linear systems subject to parameter uncertainties
Authors: Gao Ya‐Jun , Duan Guang‐Ren
Published: November 2023

This paper investigates the robust model reference tracking control problem for high‐order descriptor linear systems (HODLS) subject to norm‐bounded parameter uncertainties. The problem is divided into two subproblems: a robust proportional plus derivative state feedback stabilization (RPPDSFS) problem and a robust feed‐forward compensation (RFFC) problem. In the presence of uncertainties, by using the controller consisting of RPPDSFS part and RFFC part, all the signals of the closed‐loop system are bounded. The latter is equivalent to seeking three coefficient matrices such that a series of linear matrix equations are satisfied, and simultaneously the effect caused by uncertainties is minimized. Based on the right coprime factorization, the RFFC problem is further converted into a minimization problem with a quadratic performance index and some linear constraints. Thereafter, a linear matrix equation that determines the optimal solution is achieved. The restrictive condition that the coefficient matrix of the augmented reference system is non‐defective is relaxed, which reduces the conservativeness. A numerical example and the application of a three‐axis dynamic flight motion simulator manifest the effectiveness and the practicability of the proposed algorithm.
Bio‐fabrication of silver nanoparticles using an aqueous extract of Quercus baloot: Preparation, characterization and in vitro antimicrobial evaluation
Authors: Rabbi Fazle , Nisar Amna , Nawaz Noor Ul Ain , AlMasoud Najla , Alomar Taghrid S. , Rauf Abdur
Published: November 2023

In the current study, a novel method was used to synthesize silver nanoparticles (AgNPs) by utilizing Quercus baloot aqueous extract as a reducing agent. The biosynthesized AgNPs were then subjected to various physicochemical characterizations to assess their effectiveness against microbial familiarity. The characterization techniques included ultraviolet‐visible spectro‐photometry (UV‐Vis), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X‐ray diffractometer (XRD), and Fourier‐transform infrared spectroscopy (FTIR). The UV‐Vis analysis revealed a distinctive spectral peak at 420 nm, indicating the presence of silver nanoparticles. SEM imaging displayed the nanoparticle size range of about 100 nm at a magnification of 30,000x, while TEM demonstrated that the nanoparticles had a spherical morphology with a size of approximately 100 nm. Moreover, the crystalline structure of the silver nanoparticles was confirmed by XRD analysis, further validating their successful synthesis. Additionally, FTIR analysis provided evidence of the presence of phytochemicals involved in synthesizing the AgNPs. the biosynthesized silver nanoparticles (AgNPs) were evaluated for antibacterial and antifungal activities. The AgNPs displayed substantial efficacy against common bacterial strains, including Staphylococcus aureus (71%), Escherichia coli (59%), and Klebsiella pneumoniae (64%). Furthermore, they demonstrated significant antifungal activity against plant pathogenic fungi, namely Aspergillus niger (65%), Aspergillus flavus (70%) and Fusarium oxysporum (61%).
Radar‐based human activity recognition using denoising techniques to enhance classification accuracy
Authors: Yu Ran , Du Yaxin , Li Jipeng , Napolitano Antonio , Le Kernec Julien
Published: November 2023

Radar‐based human activity recognition is considered as a competitive solution for the elderly care health monitoring problem, compared to alternative techniques such as cameras and wearable devices. However, raw radar signals are often contaminated with noise, clutter, and other artifacts that significantly impact recognition performance, which highlights the importance of prepossessing techniques that enhance radar data quality and improve classification model accuracy. In this study, two different human activity classification models incorporated with pre‐processing techniques have been proposed. The authors introduce wavelet denoising methods into a cyclostationarity‐based classification model, resulting in a substantial improvement in classification accuracy. To address the limitations of conventional pre‐processing techniques, a deep neural network model called Double Phase Cascaded Denoising and Classification Network (DPDCNet) is proposed, which performs end‐to‐end signal‐level classification and achieves state‐of‐the‐art accuracy. The proposed models significantly reduce false detections and would enable robust activity monitoring for older individuals with radar signals, thereby bringing the system closer to a practical implementation for deployment.
The reproductive patterns of Oryzias woworae Parenty & Hadiaty, 2010, the endemic fish of Muna Island, Southeast Sulawesi, Indonesia, in rearing with varied sex ratios
Authors: Said Djamhuriyah S. , Febrianti Dwi , Akhdiana Ira , Mokodongan Daniel F. , Herjayanto Muhammad , Lawelle Sjamsu A.
Published: November 2023

The endemic freshwater ornamental fish Oryzias woworae Parenty & Hadiaty, 2010 is an endangered species, and the biological information is very rare. This research aims to study the effectiveness of sex ratio on reproduction in the limited number of broodstock. Research was conducted at RC for Limnology and Water Resources, BRIN Laboratory, in April 2022 for 3 weeks with two replicates. The sex ratio used (♂:♀) included (1:1)/A, (2:3)/B, and ( 2:5)/C. All treatments were 100% on the percentage of hatching to spawning (H/S). Treatments A & B had a fertilization rate of 100%, respectively. Meanwhile, treatment A had the highest hatching rate (91.88%). Treatment C had the highest score on the number of spawning and hatching, 5 ± 1.41 times, respectively; the average number of eggs per spawning (5.6±2.27); and the average number of larvae per hatching (4.8±1.23). However, this value is almost the same as the other treatments (A & B). For the effectiveness of using a limited number of broodstock, it is recommended to use the sex ratio 1:! for O woworae reproduction. Sex determination has been seen in the fish since the 14th of the week old. Male's size tends to be larger than female.
Geometric morphometric analysis of morphological variation in Bogor and Solok populations of bony lip barb (Osteochilus vittatus)
Authors: Imron Imron , Anggraeni Fajar , Astuti Dessy Nurul , Palimirmo Flandrianto Sih , Himawan Yogi , Pamungkas Wahyu , Marnis Huria , Haryadi Joni , Arifin Otong Zenal , Subagja Jojo
Published: November 2023

Bony lip barb (Osteochilus vittatus) represents a freshwater species belonging to the Cyprinidae family, which is naturally widely distributed in Southeast Asia. In Indonesia, it is reported to occur widely in the inland waters of the main islands of Java, Sumatra, and Kalimantan. Geographic isolation may contribute to divergent evolution, resulting in phenotypic diversity. The present study used the geometric morphometric method to identify and describe morphological feature differences between geographically distant populations, namely Bogor (West Java) and Solok (West Sumatera). Seventy individual samples were collected from Bogor and Solok, respectively. Images of each sample were taken using a digital camera, then digitized on 17 landmark points using tpsdig software, followed by shape analysis using MorphoJ software. Results showed that Geometric Morphometric analysis could identify and distinguish the body shape of both populations. Morphologically, the Bogor population had a slender body shape, while the Solok population had a shorter and broader (stubby) body shape. A combination of landmark points forming the dorsal arch (LMs 2, 3, and 15), those forming the ventral curve (LMs 9-14), and those located in the peduncle area (LM15) contributed most to the body shape differences. Possible factors causing the observed phenomena are discussed.
Population dynamics of snakehead (Channa striata) and marble goby (Oxyeleotris marmorata), their management in Bilibili Reservoir, South Sulawesi
Authors: Makmur Safran , Aida Siti Nurul , Wulandari Tuah Nanda Merlia , Anggraeni Dian Pamularsih , Fatah Khoirul , Makri  , Ali Muhammad
Published: November 2023

Bilibili Reservoir in Gowa Regency, South Sulawesi, has multipurpose functions. This study aims to estimate population dynamic parameters of snakehead and marble goby fish. Research and data collection were carried out from March to August 2020. Fish samples were obtained from fishermen’s catch using gill nets, longlines and nets. Analysis using Microsoft Excel data processing application and FISAT program. The results for snakehead fish, infinity length (L∞) 41.16 cm, growth coefficient (K) 0.6 per year and theoretical age (to) 0.24 years. Natural mortality rate (M) is 1.188 per year, the total mortality (Z) is 2.51 per year. Mortality due to fishing is 1.322 per year and exploitation rate is 0.52. As for marble goby fish, infinity length (L∞) is 33.91 cm, growth coefficient (K) is 0.64 per year, and the theoretical age (to) is 0.24 per year, natural mortality rate (M) is 1.308 per year, total mortality (Z) is 2.63 per year, mortality due to fishing is 1.322 per year, and exploitation rate is 0.50. Management of snakehead fish in Bilibili Reservoir can be done by: regulations on the use of fishing gear and methods or may be limited by fishing quotas, while the marble goby fish, can be used more as a highly nutritious consumption fish.
The trophic status and estimation of fish potential production in Batur Lake, Indonesia: A preliminary study
Authors: Kaban Siswanta , Ditya Yoga Candra , Anggraeni Dian Pamularsih , Pratiwi Made Ayu , Armanto Dony , Samuel  , Koeshendrajana Sonny
Published: November 2023

Lake Batur is a type of volcanic lake in Bangli Regency, Bali, Indonesia. The main problems in Lake Batur are no outlet, organic matter pollution from accumulated waste from the human population, cages, and agriculture. This study intends to investigate and evaluate the existing trophic status, the condition of the water, and fish production potential in Batur Lake. Observations were conducted at six stations in March 2023 using random purposive sampling. The status of water was calculated using the Trophic State Index (TSI), and fish yield was estimated using the Morphoedaphic Index (MEI). The findings showed that the TSI measurements of Batur Lake ranged from 54.07 to 75.25. In this condition, the lake is categorized as eutrophic. The annual fish production potential ranges from 109.9 to 210.5 kg/ha, with an average of 120.4 kg/ha. With 1600 hectares, the lake can produce 109-130 tons of fish. Based on captured fisheries statistic data in 2022, the potential value of fish production was relatively lower than the fishery production, which amounted to 576 tons. To suggest sustainable fisheries in Batur Lake, we need to maintain the existing fishing regulations and keep stabilizing the water quality.
Biological reproduction variables of scalloped spiny lobster (Panulirus homarus Linnaeus, 1758) in the west coast of Lampung province
Authors: Zairion Zairion , Nabila Haifa Trimelianda , Mashar Ali , Effendi Irzal
Published: November 2023

The scalloped spiny lobster (Panulirus homarus) is one of the dominant lobster species caught by fishermen in the west coast of Lampung Province. The spiny lobster fishing seems to be high pressure due to the catch result having a reasonable price for domestic and export market. However, little information on the biology of this species in the west coast of Lampung Province is considered for management. This study aimed to analyze the biological reproduction variable of scalloped spiny lobster, i.e., sex ratio, length-weight relationship and relative condition factor, maturity, reproductive potential, and spawning type. The sample was collected by simple random sampling method on the main holding center from October 2021 to March 2022. Results showed that the caught of P. homarus carapace length was in the range of 41-94 mm, the sex ratio was about 1:1.12, there was a negative allometric growth pattern for both sexes, the condition factor, and the gonadosomatic index tended to be increased from October to December, and then decrease. Gonad with fully mature stage (stage III) was found every month for both sexes, and the peak of spawning season occurs in November-December. Fecundity as the reproductive potential of P. homarus was in the range of 762-182,000 eggs, while size at onset maturity or mean size of first spawning was at 63.10 mm carapace length. Spawning patterns tend to be partial spawners. Females of P. homarus below the size at onset maturity are often caught. It is recommended to this fishery that minimum legal size should be applied in the carapace length greater than 64 mm.
Acute Hepatopancreatic Necrosis Disease (AHPPND) control in Whiteleg shrimp (Litopenaeus vannamei Boone) used inulin source from Dahlia uber (Dahlia variabilis Willd.)
Authors: Taslihan Arief , Arifin Zaenal , Soetanti Endah , Suryati  , Purnomo Sugeng Joko
Published: November 2023

The effect of Inulin derived from Dahlia tubers as a functional diet on the growth of white legs shrimp was studied to see its impact on AHPND infection. The research was conducted in a fiber tank filled with 500 L of seawater sterilized with chlorine and stocked with 100 PL30 shrimps/container. Shrimp were treated with feed containing Inulin extract from dahlia tubers at a dose of 2.5%, 5.0%, and 5.0% commercial Inulin and compared with a control. Each treatment was given 2 replications. Shrimp were then challenged with Vibrio parahaemolyticus strain AHPND at a density of 106 CFU/mL. The live shrimp were then processed histopathologically to view the microanatomical gut structure (midgut). The results showed that the mean survival of the shrimp in the control and 2.5% Inulin treatment groups was 97.3 ± 1.15% and 97.3 ± 2.3%, respectively, and the 5% Inulin treatment and commercial Inulin were each 96.9 ± 2.7%. Histopathological observations on Inulin treatment of 2.5% dahlia tuber extract and commercial Inulin showed that shrimp intestine had more lactic acid bacteria abundance than control and 5% Inulin extract. In conclusion, shrimp treated with inulin can reduce the risk of shrimp being infected with AHPND.
Heterosis and maternal effect on parameters related to productivity of 25 cross populations between five strains of common carp
Authors: Himawan Yogi , Ariyanto Didik
Published: November 2023

Heterosis is a comparison of the performance of hybrid fish compared to their parents. Positive heterosis indicates the hybrid performance is better than the parents' average. The maternal-effect in the hybridization process causes the heterosis not to be the only consideration in the formation of hybrid fish. The primary goal of this study was to estimate heterosis and conduct an evaluation of the maternal effect, especially on parameters related to the productivity of cross-population between five common carp strains in Indonesia, specifically Majalaya (MJ), Rajadanu (Rj), Sutisna (St), Wildan (Wd), and Sinyonya (Sy). The grow out of the hybrid and inbred line populations was carried out in 25 net cages, measuring 5x5 meters, for 90 days. The fish rearing was conducted with three replications. The results showed that the highest heterosis for harvested biomass as the productivity parameter was achieved in the five crosses, that is, Rj >< St, Rj >< Mj, Mj >< St, Sy >< Stand Sy >< Mj. The common carp strain with the highest maternal effect on the productivity parameter is the Majalaya strain. Female selection in the Majalaya strain affects the performance in terms of phenotypic characteristic of the cultured hybrid common carp
Estimation of number and position of fish aggregating devices in Indonesia Archipelagic Waters
Authors: Widodo Agustinus Anung , Wudianto  , Satria Fayakun , Hargiyatno Ignatius Tri , Sadiyah Lilis , Timur Putra Satria , Wibowo Sandi , Anggawangsa Regi Fiji , Hartaty Hety , Yati Emi
Published: November 2023

The research conducted in 2021 aimed to address the limitation on the use of Fish Aggregating Devices (FADs) as one of the management measures in the tuna harvest strategy in Indonesia Archipelagic Waters (IAW), specifically in Indonesia FMA 713, 714, and 715. The lack of data on the number and position of FADs posed challenges for effective management. The research utilized Sentinel-1 satellite image data from July and August 2020 to overcome this issue. These images were analyzed using the Constant False Alarm Rate algorithm and a geospatial approach. The research focused on water areas greater than 12 nautical miles from the coastline of IAW. The results estimated the number of FADs in Indonesia FMA 713, 714, and 715 to be 661, 608, and 291 units. The distance between FADs was generally less than ten nautical miles. These findings provide valuable information for managing and implementing FADs in the designated areas. However, it is important to note that the estimates are based on data from 2020, and the actual number and position of FADs may have changed. The research highlights the need for continued monitoring and registration of FADs to ensure accurate and up-to-date information for effective management measures.
Assessment of pathogenic microbial contamination in fish and environmental samples in Ambon City, Indonesia: A preliminary study
Authors: Triwibowo Radestya , Yennie Yusma , Widianto Wahyu
Published: November 2023

This preliminary study investigated pathogenic microbial contamination on fish landed in Ambon City, Indonesia, and evaluated the presence of microbial foodborne pathogens in both fish and environmental samples. The study used a rapid dry sheet media as an in-situ presumptive assay and a PCR method as a confirmatory assay. The results indicated the presence of various foodborne pathogenic bacteria, including V. parahaemolyticus, Salmonella spp., and E. coli, in the water and fish basket samples. Three out of thirty-six fish samples were also contaminated with these bacteria. Although the presumptive Listeria assay showed high positive results (36/81), none of them were confirmed as Listeria monocytogenes by PCR assay, indicating that a rapid dry sheet media may not be suitable as an in-situ rapid screening assay for fish and environmental samples. The study highlights the need for better sanitation and hygiene practices, especially at ERI Traditional Fish Landing in Ambon, and may help competent authorities and the seafood industry to implement effective control measures to ensure food safety and public health.
Engineering surveys for the rebuilding of culverts considering construction requirements
Authors: Trotsenko Irina , Korchevskaya Yulia , Shelest Sergey
Published: November 2023

The main stage of the survey is a field survey as a result of which a decision is made on the need for reconstruction work. The object of the study is culverts on the section of the Ust-Ishim-Zagvazdino highway, which runs along the River Irtysh. During the inspection, defects in the culverts were identified and decisions were made for reconstruction. Calculations of the new pipe diameter were carried out and modern materials were selected.
Development of new recipes for minced meat semi-finished products using Allium ursinum
Authors: Ivanova Galina , Kolman Olga , Glotova Marina , Nikulina Ekaterina , Evtukhova Olga
Published: November 2023

This work considers the advantages of using Allium ursinum in the formulation of minced meat semi-finished products as the main source of high amounts of ascorbic acid, dietary fiber, as well as additional biologically active substances, such as vitamins, macro- and microelements. The analysis of the main directions in the field of improving the assortment and quality of meat semi-finished products is carried out. The influence of the addition of vegetable raw materials on the nutritional value of meat semi-finished products has been studied, and the choice of vegetable ingredients in the production of functional meat semi-finished products has been justified. The possibility of using Allium ursinum in the production of functional meat semi-finished products is substantiated. The physicochemical and biologically active parameters of Allium ursinum were studied, and the effect of the addition of Allium ursinum on the shelf life of meat semi-finished products was determined. Studies have been conducted in terms of determining the physico-chemical and organoleptic parameters of semi-finished minced meat products, including those with the addition of Allium ursinum, as well as the nutritional value of the semi-finished products obtained.
Singular-spectrum time series analysis for oil and gas industry production forecasting
Authors: Zhukov Aleksandr , Zhurenkov Denis , Basalaeva Yuliya , Gedzyun Victor , Skripachev Vladimir , Kartsan Igor
Published: November 2023

The article considers theoretical aspects of using the model of singular-spectral analysis of time series with the use of decision trees, and also provides justification of the feasibility of using this model for forecasting the production of products for both oil and gas industry and dual-use products. To reduce the risks of distortion of aggregated forecast values when working with large data sets, the expert should carry out preliminary manual selection and exclusion of products, the release of which has been completed or suspended.
The influence of thermal pressure on the catalytic properties of SHS converter blocks during pre-start preparation of a diesel engine
Authors: Melbert Alla , Mashensky Alexander , Scherbakov Alexander , Razetdinov Ilgiz , Safin Airat
Published: November 2023

The study is aimed at solving the important environmental problem of reducing harmful exhaust gas emissions from diesel engines with pre-heaters when operating at subzero ambient temperatures. The issue of cleaning the exhaust gases of the pre-heater in the catalytic converter during the heating of the catalytic units during the pre-start preparation period of the 8Ch12/12 diesel engine is considered. It was found that an increase in the specific heat flow and volumetric thermal gas pressure on the porous SHS catalytic material leads to an improvement in catalytic properties in exhaust gas purification processes. An increase in heat flow from 1589 to 3807 mJ/(m3×h) led to a decrease in the estimated values of harmful emissions: nitrogen oxides – by 1.6 times; carbon monoxide – 1.9 times; hydrocarbons – 1.23 times; solid particles - 2.1 times. It was revealed that when the exhaust gas temperature changed from 650 to 810 K, the efficiency of cleaning from solid particles increased from 50 to 75%, from nitrogen oxides - from 20 to 83%, and carbon monoxide - from 53 to 75%. An increase in the quality of hydrocarbon purification is noted up to 790 K; the quality of purification changes from 32 to 47%.
Macroregional sustainable development on the basis of public-private partnership mechanisms
Authors: Prokhorov Viktor , Rozhnov Ivan , Maslova Olga , Kuklina Anna
Published: November 2023

The subject of the research is issues related to environmental problems in the forest complex of the Yenisei Siberia macroregion. The study examines the experience of implementation of the national project “Ecology” in the Russian Federation. In this national project, the results of the implementation of the federal project “Introduction of the best available technologies” were studied and conclusions were drawn regarding the early closure of this federal project by the Russian state. In particular, it was concluded that blind copying of the European Union legislation applied in the Russian forestry sector could not lead to the successful implementation of the federal project “Introduction of the best available technologies”. This is due to the fact that a number of promising technologies, which allow to effectively solve environmental problems in the national forest industry, were outside the scope of this federal project. It was proposed to use a number of its mechanisms within the framework of public-private partnership to solve environmental problems of the forest industry of the Russian Federation.
Modeling the contact interaction of leather with squeezing rollers
Authors: Bahadirov Gayrat , Aliboev Kakhramon , Xaydarov Shamsiddin
Published: November 2023

Mathematical models of the shape of roll contact curves and patterns of distribution of contact stresses in the roll module of a leather squeezing machine were developed. It was revealed that the shapes of the roll contact curves depend on the deformation and geometric parameters of leather and cloth, as well as the coefficient of friction between leather and rolls. It was established that normal stresses change from zero at the beginning and end of the roll contact zone to a maximum at the point of maximum deformation of leather located in the compression zone; shear stresses change their signs at the neutral point, which in the drive roll is located in the compression zone.
Risk assessments for rockfalls taking into account the structure of the rock mass
Authors: Takhanov Daulet , Balpanova Merei , Kenetayeva Aigul , Rabatuly Mukhammedrakhym , Zholdybayeva Gulnar , Usupayev Sheishenaly
Published: November 2023

The object of the study is the Far West quarry of Zhairemsky Mining and Processing Plant JSC. During the research work, the physical and mechanical properties of rocks at the Zhairem deposit were studied, an analysis of the correspondence between the actual and design parameters of the quarry was carried out, and field studies of rockfalls were carried out taking into account geotechnical domains. Due to an increase in the depth of development and a decrease in the width of the upper horizons of the Far West quarry, it is necessary to carry out an assessment of the risks of rockfalls and issue recommendations to reduce these risks. To achieve this goal, the following tasks have been identified: analyze previously performed studies; analyze the existing condition of the quarry sides; comparison of actual and design parameters of benches; division of the edge massif into geotechnical domains based on the results of structural zoning; field studies of rockfalls to determine the coefficient of normal and tangential recovery; analyze rockfalls in RockFall software; development of recommendations to reduce the risk of rockfalls.
The need for instrumental measurement of the traction force of the friction drive of the vertical spindles of the cotton harvesting machine
Authors: Shoumarova M. , Abdillayev T. , Duskulov A.A. , Yusupov Sh.A.
Published: November 2023

An adhesion force measurement device was developed to measure the adhesion force of a friction drive in field conditions. The device consists of a lever with a pin, a dynamometer, and a hook. To measure the adhesion force, the car is stopped on a level area and the cleaning device is raised into the transport position. The movable section of the device is opened up to 30°. The selected spindle is brought closest to the opposite drum manually. The beginning of the serrated tape is inserted into the slot of the spindle rod and bent along the screw shell. A small gap is formed between the surface of the spindle rod and the bent section of the tape, allowing for insertion of the lever pin. When force is applied to turn the lever, it will either form a rigid connection with the spindle or slip along the surface of the belts, depending on whether or not maximum adhesion force has been reached. The dynamometer measures and displays the adhesion force on a certain scale. By knowing the lever arm from the stop to the pull cord and measuring angle between them, calculations can be made to determine adhesion force.
Bioethanol production from secondary bioresources of the pulp and paper industry
Authors: Bolotnikova Olga , Kvasha Nadezhda , Malevskaia-Malevich Ekaterina
Published: November 2023

The prospects for obtaining bioethanol based on secondary bioresources of the pulp and paper industry are discussed in order to close economic cycles. The transformation of sugars of acidic hydrolyzate of deciduous wood into bioethanol by batch culture of a selected strain of the yeast Saccharomyces cerevisiae with a combination of various xylose-assimilating yeasts was studied. The ethanol yield from hexose`s part was 46% from fermented sugars, its concentration reached to 9,0±0,6 g l-1. The use of pentose sugars under microaerobic conditions (concentration of dissolved oxygen 0.5-3.0%) gave the efficiency of ethanol production up to 26.7 - 35.5% from fermented sugars. The ethanol concentration in terms of the pentose`s fraction was 3.9-4.5 g l-1 (the yeast Pachysolen tannophilus); 5.2 g l-1 (the yeast Candida tropicalis); 5.6 g l-1 (the yeast Candida shehatae). The total amount of ethanol obtained from both hexose and pentose parts after distillation was 4.2-4.6 g (5.2-5.7 ml) with alcohol by volume 96%.
Air source emissions inventory: A case for emissions calculation in Vietnam
Authors: Quynh Pham Huong , Thi Anh Tuyet Nguyen , Thi Thanh Yen Pham
Published: November 2023

Emission inventory is one of the measures to determine the amount of air causing pollution to the surrounding environment. This article calculates exhaust source in the area including: construction material stores, construction works, households, restaurants - eateries, gas stations, printing - photocopying shops, garages, temples, activities. straw burning activities from 9 cities/districts in Vinh Phuc province, Vietnam, thereby determining the contribution of each waste source as well as each district to the total emissions of the entire Vinh Phuc province. The results show that these emission sources have contributed to the gas resources of Vinh Phuc province in Vietnam as follows: NOx, CO, SO2, NMVOC, TSP, CH4, PM2.5 are 372.08; 13242.50; 28; 1409.78; 2045.10; 1213.08; 1473.67 tons/year. The results also show that straw burning is the source with the largest load. Specifically, the load of CO, SO2 and CH4 accounts for over 70% of total emissions.
Modular enumeration technology - a tool for creation of new algorithms family solving discrete programming problems
Authors: Groppen Vitaly O.
Published: November 2023

The paper proposes a new enumeration technology based on modular enumeration ideology resulting in a new group of algorithms that numerically solve extremal problems with discrete variables. All descriptions of this approach are illustrated with examples. Presented are the conditions of application of the proposed technology, as well as analytical and experimental bounds of its effectiveness.
Un shot de synTac pour activer la réponse cytotoxique des lymphocytes T CD8+ spécifiques du VIH
Authors: Flescq Charlène , Gachon Alexis , Saez Cirion Asier
Published: November 2023

Dans le cadre de leur module d’analyse scientifique, des étudiants des Master 2 « Immunologie Translationnelle et Biothérapies » (ITB) et « Immunologie Intégrative et Systémique » (I2S) (mention biologie moléculaire et cellulaire, parcours immunologie, Sorbonne université) se sont penchés sur la littérature et ont pris la plume pour partager avec les lecteurs de m/s quelques-uns des faits marquants de l’actualité en immunologie. Voici une sélection de ces nouvelles, illustrant certaines des stratégies actuellement développées pour optimiser les immunothérapies.
Autismus-Spektrum-Störung im Erwachsenenalter
Authors: Thaler Hanna , Falter-Wagner Christine
Published: November 2023

Autismus ist eine neuronale Entwicklungsstörung, die durch
Schwierigkeiten in der sozialen Interaktion und Kommunikation sowie repetitive,
stereotype Verhaltensweisen und Interessen gekennzeichnet ist. Diese Merkmale
liegen bereits ab der frühen Kindheit vor, sind anhaltend und zeigen
sich über verschiedene Kontexte hinweg. Der Beitrag geht auf die
Besonderheiten im Erwachsenenalter ein, gerade wenn die Diagnose erst dann
gestellt wird.
Improving Patient-Reported Outcomes in Stroke Care using Remote Blood Pressure Monitoring and Telehealth
Authors: Naqvi Imama A. , Strobino Kevin , Li Hanlin , Schmitt Kevin , Barratt Yuliya , Ferrara Stephen A. , Hasni Amna , Cato Kenrick D. , Weiner Mark G. , Elkind Mitchell S. V. , Kronish Ian M. , Arcia Adriana
Published: November 2023

Background Inequities in health care access leads to suboptimal medication adherence and blood pressure (BP) control. Informatics-based approaches may deliver equitable care and enhance self-management. Patient-reported outcomes (PROs) complement clinical measures to assess the impact of illness on patients' well-being in poststroke care.

Objectives The aim of this study was to determine the feasibility of incorporating PROs into Telehealth After Stroke Care (TASC) and to explore the effect of this team-based remote BP monitoring program on psychological distress and quality of life in an underserved urban setting.

Methods Patients discharged home from a Comprehensive Stroke Center were randomized to TASC or usual care for 3 months. They were provided with a BP monitor and a tablet that wirelessly transmitted data to a cloud-based platform, which were integrated with the electronic health record. Participants who did not complete the tablet surveys were contacted via telephone or e-mail. We collected the Patient-Reported Outcomes Measurement Information System Managing Medications and Treatment (PROMIS-MMT), Patient Activation Measure (PAM), Neuro-QOL (Quality of Life in Neurological Disorders) Cognitive Function, Neuro-QOL Depression, and Patient Health Questionnaire-9 (PHQ-9). T-tests and linear regression were used to evaluate the differences in PRO change between the arms.

Results Of the 50 participants, two-thirds were Hispanic or non-Hispanic Black individuals. Mechanisms of PRO submission for the arms included tablet (62 vs. 47%), phone (24 vs. 37%), tablet with phone coaching (10 vs. 16%), and e-mail (4 vs. 0%). PHQ-9 depressive scores were nominally lower in TASC at 3 months compared with usual care (2.7 ± 3.6 vs. 4.0 ± 4.1; p = 0.06). No significant differences were observed in PROMIS-MMT, PAM, or Neuro-QoL measures.

Conclusion Findings suggest the feasibility of collecting PROs through an interactive web-based platform. The team-based remote BP monitoring demonstrated a favorable impact on patients' well-being. Patients equipped with appropriate resources can engage in poststroke self-care to mitigate inequities in health outcomes.
A white cell based broadband transient UV-vis absorption spectroscopy with pulsed laser photolysis reactors for chemical kinetics under variable temperatures and pressures
Authors: Winiberg Frank A. F. , Chao Wen , Caravan Rebecca L. , Markus Charles R. , Sander Stanley P. , Percival Carl J.
Published: November 2023

UV-vis spectroscopy is widely used for kinetic studies in physical chemistry, as species’ absolute cross-sections are usually less sensitive to experimental conditions (i.e., temperature and pressure). Here, we present the design and characterization of a multipass UV-vis absorption spectroscopy white cell coupled to a pulsed-laser photolysis flow reactor. The glass reactor was designed to facilitate studies of gas phase chemical reactions over a range of conditions (239–293 K and 10–550 Torr). Purged windows mitigate contamination from chemical precursors and photolysis products. We report the measured impact of this purging on temperature uniformity and the absorption length and present some supporting flow calculations. The combined optical setup is unique and enables the photolysis laser to be coaligned with a well-defined absorption pathlength probe beam. This alignment leverages the use of one long-pass filter to increase the spectrum flatness and increase the light intensity vs other systems that use two dichroic mirrors. The probe beam is analyzed with a dual exit spectrograph, customized to split the light between an intensified CCD and photomultiplier tube, enabling simultaneous spectrum and single wavelength detection. This multipass system yields a pathlength of ∼450 cm and minimum observable concentrations of ∼3.7 × 1011 molecule cm−3 (assuming cross-sections ∼1.2 × 10−17 cm2). The temperature profile across the reaction region is ±2 K, defined by the worst-case temperature of 239 K, validated by measurements of the N2O4 equilibrium constant. Finally, the system is implemented to study the simplest Criegee intermediate, demonstrating the instrument performance and advantages of simultaneous spectrum and temporal profile measurements.
Generation of jet-forming plasma bunch with gigagauss axial magnetic field from impact of linearly polarized laser on microtube targets
Authors: Yang Y. C. , Huang T. W. , Yu M. Y. , Jiang K. , Zhou C. T.
Published: November 2023

Generation of a thin plasma jet with embedded gigagauss axial magnetic fields from the frontal impact of a short linearly polarized laser pulse on an overdense microtube target is considered. It is a new scheme of axial magnetic field generation without initial laser angular momentum. Three-dimensional particle-in-cell simulations show that the space-charge field of the laser expelled tube-front electrons will pull out carbon ions to form at the tube entrance a long-living low-density plasma bunch with gigagauss magnetic fields. The front center of the plasma bunch then stretches forward to form a thin gigagauss-magnetized plasma jet, which survives for sub-picosecond after the core of the laser has passed through the tube.