bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of bull-calf management system on meat productivity
Authors: Trukhachev V , Oliinyk S , Kozyr V , Zlydnev N , Zakotin V 
Published: January 2022

Abstract
Traditional technologies for the production of beef in the conditions of industrial production of livestock products in the middle of the 20th century were schematically transferred from dairy cattle breeding and do not take into account the behavioral characteristics of animals. The traditional approach to the cultivation of young animals involves a stall-and-loose keeping system, mechanized distribution of feed and manure cleaning. Under such conditions the labor costs for the production of 1 kg of beef are within 15-30 man-hours, the total specific weight of feed, electricity, fuel and lubricants, depreciation costs of livestock buildings and technological equipment in the cost structure of this product reaches 50-55%. Beef production remains unprofitable regardless of animal breed – the cost of 1 kg of meat is 1.5-2 times higher than the sales price, which hinders further development of the industry. The paper shows the results of the assessment of meat productivity of bulls of various breeds when raised using traditional and low-cost technologies. Research results are relevant for beef production in steppe regions.
Monitoring studies of the content of heterocyclic aromatic amines in second-course meals with chilled side dishes sold in the Russian Federation
Authors: Utyanov D A , Kulikovskii A V , Knyazeva A S , Khvostov D V , Kurzova A A 
Published: January 2022

Abstract
The research carried out allowed establishing that during the industrial preparation of second-course meals with garnish in the meat components, heterocyclic aromatic amines are formed. Heterocyclic aromatic amines were found in all samples tested. However, the lack of information on the preparation technology of the selected samples does not allow a complete analysis of the results obtained. However, it is worth noting that the largest amount of heterocyclic aromatic amines was formed in samples with chicken meat cooked at the highest temperatures relative to other samples, judging by its appearance. The presence of heterocyclic aromatic amines in all studied samples indicates the potential harm of consuming such products for human health.
Methodological approaches to the veterinary and sanitary examination of Acipenseriformes species
Authors: Zabolotnykh M V , Kleimenova S V , Zubareva E A , Ivkova I A 
Published: January 2022

Abstract
The aim of this study was to describe the methodological approaches to the peculiarities of veterinary and sanitary examination of Acipenseriformes species. Many species of this family differ in nutritional and biological value, which affects pricing. In addition, species identification prevents the sale of counterfeit and illegal (poaching) fish products. Currently, there are no available methods for accurately determining the Acipenseriformes species. 15 fishes of the sturgeon family were taken for this study. The comparative description of organoleptic, morphological, anatomical and topographic features for species identification was studied. It is necessary to develop a technique that would be applicable for quick determination of Acipenseriformes species. It is reliable to count the gill stamens, determine the number and structure of the rays of the fins and gill covers, the absence or presence of fringes on the tendrils.
Numerical study of sediment transport in Thu-Bon estuary and coastal areas of Hoi-An City
Authors: Thong Nguyen , Duc Ho Tuan , Hung Phan Quang , Yen Tran Hai 
Published: January 2022

Abstract
The area of Cua-Dai estuary and the coastal areas of Hoi-An City have experienced complicated erosion and sedimentation in recent years. Along the coast of Hoi-An, erosion often occurs, whereas in the area of Cua-Dai River, there is an accretion phenomenon that obstructs the waterway navigation from Cua-Dai to Cu-Lao-Cham. Occurrence of sand dunes in the offshore location of Cua-Dai has been recorded at a number of times in recent years. Studying the process of bed morphological change due to the sediment transport in the Thu-Bon river and the influence of monsoons in the area allows to explain the above phenomenon thus an in-depth study to propose appropriate solutions. This study used the numerical model Telemac which combines the hydro-morphodynamic and wave modules. The simulation results show that the main trend of coastal currents caused by tides and waves tends to go southward, leading to coastal erosion especially in the northeast monsoon season as well as sedimentation in the estuarine area. In addition, the model also shows the crucial role of waves in shoreline erosion, with the degree of erosion in the north coast near Cua-Dai being more severe than the southern coast, through the formation of local eddy flow on the north coast.
Application of GIS on building the spatial database for supporting drainage management in Ninh Kieu District
Authors: Ngan Nguyen Thanh , Anh Tuan Dinh Diep , Trung Nguyen Hieu 
Published: January 2022

Abstract
Ninh Kieu District is located in the center of Can Tho City, established under the Government’s Decree No. 05/2004/ND-CP. This is a modern and rich district, with a history of formation and development associated with the Mekong Delta. According to statistics in 2019, Ninh Kieu District has an average population of 280,792 people, with a population density of 9,605 people/km2 and an area of 29.23 km2. In the current period, the urbanization process in Ninh Kieu District takes place at a fast and strong pace. This has made it impossible for the urban drainage system to keep up with this change, thereby creating great difficulties for the drainage management here. In order to deal with these enormous challenges, the managers in this area need to incorporate new technologies into drainage management. This paper presents the main result of building a spatial database to support drainage management for Ninh Kieu District. This is considered as a fundamental source of data for application of GIS in urban drainage research and management in Ninh Kieu District.
Remote sensing and GIS application in assessing the adaptability of some key crops in Dak Nong province
Authors: Thanh Huong Nguyen Thi , Bao Ho Dinh , Hoai Cao Thi , Hang Phan Thi , Son Ngo The , Thuy Kieu Dang Thi , Ngoc Quyen Nguyen Thi , Dinh Nguyen Duc , Xuan Phan Tran Thi , Anh Pham Tuan , Mai Thy Pham Thi , Hong Diep Nguyen Thi 
Published: January 2022

Abstract
Remote sensing (RS) and Geographic information system (GIS) is widely applied in the world and gradually affirms its role in Vietnam in managing agricultural and forest resources. This application is highly effective, providing information timely for managers to make decisions and build development strategies. In this study, RS and GIS were integrated to assess suitability for key crop species in Dak Nong province including coffee, rubber, cashew, and durian based on their suitability to site conditions such as soil (soil type, soil texture, soil thickness), topography (elevation, slope) and climate (temperature, precipitation). Using the restrictive method and overlapping map layers of natural factors, classified into adaptive levels according to FAO (1976). Results show that most land areas in Dak Nong province have different levels of potential suitability for key crop species ranging from non-adaptive to lesst-adaptive and moderately adaptive. However, most suitable areas for key crops are only at low (accounting for a large proportion) and the average adaptation level. The findings from the study are the scientific information for managers to make decisions regarding the structure of major crops in the province.
Assessment the impacts of climate change on drought in the Ba River basin, Central Vietnam using Landsat remote sensing data
Authors: Tham Han T N , Pham Thy T M , Truong Thi N K , Nguyen Huong T T , Lam Nguyen D , Le Trung V 
Published: January 2022

Abstract
Sustainable management of the river basin is a profound challenge for environmental management in the context of climate change. Drought situations in a basin occur in relation to meteorological, hydrological, agricultural factors and climate change as well. In this study, remote sensing technology was applied to assess the impacts of climate change on drought in the Ba River basin, Central Vietnam. Drought in the basin has been created by land use/land cover changes in recent years, which has resulted in a sharp decrease in forest area in the period 1989 to 2019 (-41.5%) and a significant increase of agricultural land with 38.2%. Following that, the area of drought agriculture rose by 28.8%. The remarkably high drought areas in agricultural land were in El Nino years, 2016 (99.2%) and 2019 (87.3%), which indicated that under climate change impacts, a drought occurred more severely. Moreover, drought also appeared in the forest. The forest area deceased but the drought levels in the forest increased slightly since 2005 and hit a peak drought value in 2016 with 97.0% of forest area. During El Niño years, the precipitation, atmospheric moisture, and water flow in the basin were all lower than in previous years.
Application of multi-temporal Sentinel-1 SAR data for yield estimation of rice crops in An Giang, Vietnam
Authors: Phung Hoang Phi , Nguyen Lam Dao , Anh Vu Nguyen Van , Thanh Nguyen Kim , Trung Le Van 
Published: January 2022

Abstract
Rice is one of the main agricultural crops and plays an important role in food security. Therefore, it is essential to propose a method for monitoring the distribution of rice yield. Radar remote sensing data sources provide a sustainable solution for rice monitoring challenges in the countries located in the tropical monsoon region like Vietnam. The SAR (Synthetic Aperture Radar) remote sensing data from the Sentinel-1 satellite provided by the European Space Agency (ESA) is free of charge, has a large coverage and high spatial-temporal resolution. In this paper, rice growing areas in the An Giang province of Vietnam Mekong Delta were analyzed, which demonstrates the potential applications of multi-temporal data and proposes a method to estimate rice yield for agricultural management. The analysis results showed that in 2018 the Winter-Spring rice crop has the highest yield, and the Autumn-Winter crop has the lowest yield. Accurate and timely estimation of rice yield and production can provide important information in terms of spatial distribution and seasonal yield for government and decision-makers in policy making related to import and export.
Climate trends and climate change scenarios in Ho Chi Minh City
Authors: Le Anh Ngoc , Vo Thi Nguyen , Nguyen Van Hong , Nguyen Dang Mau 
Published: January 2022

Abstract
This paper reviews the trends of climate and climate change scenarios in Ho Chi Minh City (HCMC). The linear regression method is used to determine the trend and variation of past climate (1980-2019) at Tan Son Hoa station. The annual average temperature tends to increase about 0.024°C/year (r2=0.54) and the rainfall tends to increase about 6.03 mm/year (r2=0.67). For temperature scenario, by 2030 the annual average temperature in the whole city will increase from 0.80- 0.81°C (RCP4.5) and 0.92-0.98°C (RCP8.5). By 2050, it will increase 1.23-1.33°C (RCP4.5) and 1.55-1.68°C (RCP8.5). By 2100, it will increase 1.75-1.88°C (RCP4.5) and 3.20-3.55°C (RCP8.5) compared to the base period. Regarding rainfall scenario, in 2030, the city-wide average rainfall will increase by 12-21% (RCP4.5) and by 12-17% (RCP8.5). By 2050, the average rainfall is likely to increase by 13-15% (RCP4.5) and 15-17% (RCP8.5). By 2100, the average rainfall is likely to increase by 18-22% (RCP4.5) and 20-21% (RCP8.5) compared to the base period.
Effects of sediment deposit on the hydraulic performance of the urban stormwater drainage system
Authors: Quang C N X , Giang N N H , Hoa H V , Hung P Q 
Published: January 2022

Abstract
Sediment deposit is a critical factor strongly affecting the drainage capacity of the conduits due to its cross-section area narrowing and roughness increasing. In this study, a numerical model was applied to investigate the influences of sediment deposit on the hydraulic performance of the drainage conduits. The Nhieu Loc - Thi Nghe (NL-TN) basin, located in Ho Chi Minh City, Vietnam, was selected as a case study. The drainage network of the NL-TN basin was simulated by using the EPA-SWMM model. The effects of sediment deposit were assessed by a non-dimensional comparison of the simulated peak flows of the sediment-deposited conduits and the clean ones. The results indicated that the sediment deposit significantly affects the flow capacity of the conduits and could cause severe inundation. Narrowing of the cross-section area has more impact on the hydraulic performance of the conduit than the increase in the roughness. A 40% increase in the Manning coefficient could decline the peak flow to approximately 80-90%, while a 40% increase in sediment thickness depth could degrade the peak flow by about 60-70% to compare with the peak flow of the clean conduit. The findings could support decision makings on the operation and maintenance of the sewer system and adaptation to extreme rainfall events.
Recovering Zinc from electroplating wastewater by crystallization in a pellet reactor
Authors: Hoang Nhung Thi-Tuyet , Tran Anh Thi-Kim 
Published: January 2022

Abstract
A pellet reactor (PR) was used to investigate the ability for zinc recovery from electroplating wastewater. The pellet reactor is a fluidized bed reactor, in which the nucleated precipitation of heavy metals occurred on the surface of seeding material. The zinc removal efficiency was 75% at molar ratio [CO3
2-]/[Zn2+] of 2.5, the flowrate of 16 L/h, sand’s diameter of 0.25 – 0.5 mm, and sand’s mass of 50 g. The elemental analysis of zinc carbonate and zinc hydroxide crystallization was analyzed by X-ray energy dispersive spectrometer (EDS) and the surface was characterised by Scanning electron microscope (SEM) to get the morphological observation of the pellets after 38-day operation. This study demonstrated that the fluidized bed reactor can be considered a feasible method for zinc removal efficiency from electroplating wastewater to achieve sustainable development.
GIS-Based Touring Route Planning for Forest Parks - Baiwangshan Forest Park as an Example
Authors: Jiao Yan , He Zuoyu 
Published: January 2022

Abstract
With the popularization of low-carbon concept, residents pay more and more attention to the demand of urban forest parks. In this essay, the GIS software based on remote sensing technology is used to analyze the elevation, slope and slope direction of Baiwangshan Forest Park and carry out superimposed data processing, followed by distance analysis of park nodes, and finally obtain different types of tour organization routes such as cultural experience, ecological civilization, sports and fitness, to realize the efficiency and rationality of forest park tour route design, improve the utilization rate of forest resources, and provide reference for future tour route planning of the same type of The tour route design of forest park is efficient and reasonable, and the utilization rate of forest resources is improved.
Self-healable Hydroxyl-terminated Polybutadiene based Polyurethane for Sustainable Development
Authors: Liu Yahao , Zheng Jian , Zhang Xiao , Zhang Yu , Yu Guibo , Jia Yunfei 
Published: January 2022

Abstract
Self-healing technology provides a promising road for the sustainable development of the environment, which can extend the service life of materials, thereby reducing the waste of natural resources. As is known to all, it is difficult to obtain a polymer with fast room-temperature self-healing properties without any external stimuli. In this work, a series of polyurethanes with fast room-temperature self-healing capability were designed and prepared by combining the hydrogen bonds and the aromatic disulfide bonds. Owing to their synergistic effect, the obtained polyurethane exhibited high self-healing efficiency of 95.2% for SPU-1, and 98.4% for SPU-2. It is excepted that this design strategy may be potential applications in sustainable development for applied materials.
Light-Weight and Cost-Effective Spherical Triboelectric Nanogenerator for Effective Water Wave Energy Harvesting
Authors: Ye Zhicheng , Liao Shuai , Wang Fengxin , Mo Lianghao , Li Guoming , Luo Yuanzheng 
Published: January 2022

Abstract
Ocean wave energy is one of the most promising clean and renewable energy, triboelectric nanogenerators (TENGs) can be seen as a promising technology by harvesting blue energy to reduce greenhouse gas emissions. This work utilized a novel process to fabricate porous foam-shaped PDMS vibrator combined with aluminium metal electrode film and polyimide (Kapton) film to form a contact separation single electrode vibrating friction nanogenerator. The vibratory TENG with porous PDMS spherule (P-TENG) as vibrator enhanced the output performance with facile manufacturing process. The results show that the output voltage of the vibratory friction nanogenerator with porous spherules as the vibratory friction nanogenerator is 38.89% higher than that with solid ones and the charge accumulation and release period is eight times higher. Given the features of exceptional output performance, unprecedented robustness and universal applicability resulting from porous structure, the P-TENG is promising candidate for ocean wave energy harvesting in our water-wave experiment.
Research on the Perception of University Students’ Urban Environment Based on Cognitive Maps——Take Jinan City as an Example
Authors: Fu Jia , Lu Zhenyu , Zhao Feng 
Published: January 2022

Abstract
This article takes the university students’ spatial cognition information of the city where the school is located as the research object, and takes time development as the cut-in angle. Through the classification study of the cognitive map, the analysis of the characteristics of the university students’ cognition of urban environment and the causes of their influence are found. In the process of transforming from the tourist perspective to the local perspective, the frequency of cognitive elements changes, that is, the cognitive characteristics from scattered to structural, and finally proposes urban environment development planning recommendations based on readability.
Research on the Planning and Design of Forest Recreation Base Based on GIS and RMP Analysis -- Take the Example of Forest Recreation Base Above the Clouds in Heshun County, Shanxi Province
Authors: Lu Jiahao , He Zuoyu 
Published: January 2022

Abstract
After the Novel coronavirus pneumonia, it is imperative to revitalize and restore the industry. Promoting the forest recreation industry in Heshun County to find the right positioning and integrating the local ecological and cultural connotation is the most effective channel and way. This paper uses GIS to spatially analyze the forest recreation base above the clouds and combines RWP analysis to analyze and summarize its current resources and development status, analyze the dilemmas and shortcomings in the process of base construction, and use it to make some suggestions on the path and benefits of integrating forest recreation and ecological culture in Heshun County. In this way, we can make reference to the integration of forest recreation and ecological culture in other regions and build a sustainable forest recreation industry in the new era.
Physical and dynamic mechanical properties of continuous bamboo reinforcement/bio-based epoxy composites
Authors: Richmond Tutea , Lods Louise , Dandurand Jany , Dantras Eric , Lacabanne Colette , Malburet Samuel , Graillot Alain , Durand Jean-Michel , Sherwood Edouard , Ponteins Philippe 
Published: January 2022

Abstract
Unidirectional bamboo reinforced cardanol-based epoxy composites were prepared by a close mould method. Two morphologies of reinforcements were used in this research: bamboo fibres and bamboo strips. The present article investigates the influence of bamboo reinforcements on the thermal and mechanical properties of the bio based matrix. Differential Scanning Calorimetry analyses showed that the introduction of bamboo does not modify the physical properties of the matrix. DMA analyses in shear mode showed an improvement of the shear conservative modulus that reaches 1.7 ± 0.1 GPa. This value that is independent from the morphology of reinforcements, indicates the existence of physical interactions. The continuity of matter between bamboo strips or bamboo fibres and the matrix observed by SEM confirms this result. Nevertheless, in tensile mode, the improvement of the tensile conservative modulus is specific to the used morphology. Indeed, for bamboo strips composites, it is 7.7 ± 0.8 GPa, while for bamboo fibres composites, it reaches 9.6 ± 0.8 GPa. This result is explained by the optimisation of stress transfer thanks to the specific morphology of bamboo fibres. A significant increase is also observed for the rubbery modulus due to entanglements specific of bamboo reinforcement.
3D x-ray microtomography investigations on the bimodal porosity and high sulfur impregnation in 3D carbon foam for Li–S battery application
Authors: Thripuranthaka M , Chaturvedi Vikash , Dwivedi Pravin Kumari , Torris Arun , Shelke Manjusha V 
Published: January 2022

Abstract
Lithium–sulfur (Li–S) batteries, regarded as one of the most promising alternatives to current state-of-the-art rechargeable Li-ion battery technologies, have received tremendous attention as potential candidates for next-generation portable electronics and the rapidly advancing electric vehicle market. However, substantial capacity decay, miserable cycle life, and meagre stability remain critical challenges. More specifically, shuttling of polysulfide (Li2S
x
(3 < x ⩽ 8)) species severely hinders the cycle performance resulting in capacity fade and cycling instability. In the present work, a highly conducting three-dimensional (3D) carbon nanofiber (CNF) foam has been synthesized using the lyophilization method followed by thermal pyrolysis. The highly porous foam materials have a bimodal porosity distribution in the nano and micro regime and were successfully investigated to serve as a potential host for sulfur species intended for Li–S battery application. 3D x-ray microtomography was employed to estimate the nature of sulfur impregnation and distribution in the 3D porous networks. On utilizing the final product as cathode material, sulfur impregnated carbonized CNF foam and modified the separator with functionalized multiwalled carbon nanotubes delivered a specific capacity of ∼845 mAh g−1 at 100 mA g−1.
Solar cell parameter accuracy improvement, via refinement of the Co-Content function. Part 1: theoretical analysis
Authors: Rangel-Kuoppa Victor Tapio 
Published: January 2022

AbstractIn this Part 1 of this series of articles, the accuracy on the obtention of the shunt resistance (Rsh), the series resistance (Rs), the ideality factor (n), the light current (Ilig), and the saturation current (Isat), via the use of the Co-content functionCCV,I=∫0VI−IscdV(whereIsc=IV=0) is investigated theoretically, as function of the number of measured points per voltage (PV) and percentage noise (pn). Reasonable values are obtained forRsh,Rs, andIlig, withPV= 11 measurement points perVif thepnis 0.1% or less. For a reasonable determinationofnat leastPV= 101 measurement points perVare needed.Isatdetermination requirespnof 0.01% or lower with at leastPV= 101 measured points perVand should be evaluated at large values ofV.The results given in this Part 1 are used in Part 2 to discuss the reported application of theCCV,Ito obtain Rsh,Rs,n,Ilig, andIsatfound in the literature.