bluuebunny/crossref_metadata_2025 huggingface dataset:
Unlocking the Potential of Agrifood Waste for Sustainable Innovation in Agriculture
Authors: Voss Monica , Valle Carlotta , Calcio Gaudino Emanuela , Tabasso Silvia , Forte Claudio , Cravotto Giancarlo
Published: March 2024

The United Nations Environment Programme’s (UNEP’s) Food Waste Index Report 2021 highlights a global annual food waste of 1 billion tons. The UNEP plays a crucial role in achieving Sustainable Development Goal (SDG) 12.3, which aims to halve per capita global food waste (FW) at the retail and consumer levels and reduce food losses along production and supply chains globally by 2030. On the other hand, the agricultural sector faces the challenge of increasing productivity to feed the world’s growing population while reducing the environmental impact on ecosystems and human health. In this context, the conversion of agri-food waste (AFW) into biocides, bio-based fertilizers (BBFs) and biostimulants could represent a successful approach to tackle all these issues. This review shows the latest findings on the different sources of AFW and the application of their bioactive compounds in agriculture. Increasing crop yields and improving plant physiology through the utilization of AFW-derived value products aligns with a circular economy approach, bolstering people’s confidence in managing food waste for improved food production.
Thermal Performance Analysis of an Indirect Solar Cooker Using a Graphene Oxide Nanofluid
Authors: Shaaban Fatma M. , Abdel-Salam M. F. , Farroh Khaled Y. , Wang Han , Atia Mohamed F.
Published: March 2024

Solar energy has become an energy source for a wide range of uses, including in solar cookers, due to its availability, cleanliness, environmental friendliness, and sustainability. In this study, an indirect solar cooker was investigated by measuring its thermal performance using a Graphene Oxide (GO) nanofluid. Water, GO (250 ppm)-water, and GO (500 ppm)-water were used as heat transfer fluids. The experimental set-up consisted of the cooking part and a solar collector, which are the two essential elements in indirect solar cookers. The cooking part was a wooden box solar cooker, and the parabolic trough solar collector was a polished stainless steel structure. The solar cooker was assessed using the stagnation test and load test as well as energy and exergy measurements. According to the test results, the averaged F1 was 0.1 for the base fluid water, 0.11 for GO (250 ppm)-water, and 0.13 for GO (500 ppm)-water. In addition, using a GO nanofluid instead of water in the solar cooker, the system’s thermal performance, energy, and exergy efficiency were improved. The use of the GO (250 ppm)-water and GO (500 ppm)-water nanofluids instead of water in the system improved the overall energy efficiency of the system by 3.3 and 4.2%. Moreover, using GO (500 ppm)-water allowed for achieving superior performance.
Bicycle Infrastructure Design Principles in Urban Bikeability Indices: A Systematic Review
Authors: Ahmed Tufail , Pirdavani Ali , Wets Geert , Janssens Davy
Published: March 2024

Bicycling is a sustainable form of micromobility and offers numerous health and environmental benefits. Scientific studies investigating bikeability have grown substantially, especially over the past decade. This paper presents a systematic literature review of the developed urban bikeability indices (BIs). The paper provides insight into the scientific literature on bikeability as a tool to measure bicycle environment friendliness; more importantly, the paper seeks to know if the BIs consider bicycle infrastructure design principles. Data extraction included identifying the geographical location, essential indicators, sample size and distribution, data source, the unit of analysis, measurement scale, methods used to weigh indicators, and identification of studies using bicycle design principles in BIs. The database search yielded 1649 research articles using different keywords and combinations, while 15 studies satisfied the inclusion criteria. The studies were found to be conducted in various geographical locations. The unit of analysis for developing the index varied across studies, from street segments or bicycle lanes to zones within the city or even the entire city. The most commonly utilized method in developing urban BIs was a scoring and weighting system to weigh the indicators. The weighting methods include an equal weight system, survey-based and literature review-based methods, expert surveys, the analytic hierarchy process, and a weighted linear combination model. The essential criterion is bicycle infrastructure, such as bike lanes, routes, and bicycle paths as 14 studies considered it for the construction of the BIs. The review findings suggest a lack of consideration of all five bicycle infrastructure design principles, as only three studies considered them all, while others only included a subset. Safety and comfort are the most commonly considered principles, while coherence is the least considered principles in the BIs. It is crucial to consider all five bicycle infrastructure design principles to create a bicycle-friendly environment and attract more people to this sustainable mode of transportation.
Characterization of Spanish Lentil Germplasm: Seed Composition and Agronomic Performance Evaluation
Authors: Brun Pilar , de los Mozos Marcelino , Alcántara Maria Cristina , Perea Francisco , Camacho María , Rodriguez Navarro Dulce Nombre
Published: March 2024

Lentil (Lens culinaris Medik.) is a resilient annual herb belonging to the Fabaceae family. Known for their ability to fix atmospheric nitrogen in symbiosis with rhizobia, lentils demonstrate moderate drought tolerance. Legumes are key crops in sustainable agriculture due to their low water and N requirements. This study evaluates the symbiotic responsiveness of various lentil accessions from the Spanish germplasm bank to different rhizobia strains. Additionally, the nutritional profile of seeds was determined, encompassing energy, fat, available carbohydrates, sugars, proteins, fibre, mineral content, and macro and micronutrients. Phenolic compound content was assessed using advanced UHPLC-HRMS techniques. The agronomic performance of six selected accessions was evaluated across two distinct locations under rainfed conditions and varying management systems. Notably, the protein content of the evaluated accessions exceeded 25%, particularly in two standout accessions, namely BGE025596 and BGE026702, with protein levels surpassing 30% and fat content below 2%. Furthermore, accessions BGE016362 and BGE026702 exhibited exceptional iron (Fe) content, exceeding 1 g/100 g of seed flour. It was observed that coloured microsperma lentil accessions harboured higher concentrations of phenolic compounds than non-coloured macrosperma seeds’ antioxidants and anti-inflammatories. Agronomic performance varied based on cropping region and accession origin.
Estimating the Expected Commercial Potential of Saudi Date Exports to Middle Eastern Countries Using the Gravity Model
Authors: Alamri Yosef A. , Alnafissa Mohamad A. , Kotb Alaa , Alagsam Fuad , Aldakhil Abdullah I. , Alfadil Imad Eldin , Al-Qunaibet Mohammad H. , Alaagib Sharafeldin
Published: March 2024

Date production farms account for 10% of total income in the agricultural sector. Although Saudi exports of dates reach many countries, they are still of lower quantity compared to the size of their production. This study investigates the possibility of expanding external marketing of date exports by increasing the marketing efficiency of the existing market, which is expected to lead to increased returns. Therefore, this research uses the gravity model to identify the most critical factors affecting Saudi date exports to Middle Eastern countries. The results indicated the positivity of the per capita GDP in Saudi Arabia, the common border in influencing the increase in date exports, and the opposite effect of membership in the Gulf Cooperation Organization (GCC). In estimating the potential and expected trade capabilities with the Middle Eastern countries, the study results show that the actual value of date exports to the countries of the Middle East represents about 83.37% of its expected potential date trade, and it is possible to increase the export value by 16.63%, or USD 12.75 million. The study provides recommendations to improve date trade further.
Spatio-Temporal Self-Attention Network for Origin–Destination Matrix Prediction in Urban Rail Transit
Authors: Zhou Wenzhong , Tang Tao , Gao Chunhai
Published: March 2024

Short-term origin–destination (OD) prediction in urban rail transit (URT) is vital for improving URT operation. However, due to the problems such as the unavailability of the OD matrix of the current day, high dimension and long-range spatio-temporal dependencies, it is difficult to further improve the prediction accuracy of an OD matrix. In this paper, a novel spatio-temporal self-attention network (SSNet) for OD matrix prediction in URT is proposed to further improve the prediction accuracy. In the proposed SSNet, a lightweight yet effective spatio-temporal self-attention module (STSM) is proposed to capture complex long-range spatio-temporal dependencies, thus helping improve the prediction accuracy of the proposed SSNet. Additionally, the finished OD matrices on previous days are used as the only data source without the passenger flow data on the current day in the proposed SSNet, which makes it possible to predict the OD matrices of all time intervals on the current day before the operation of the current day. It is demonstrated by experiments that the proposed SSNet outperforms three advanced deep learning methods for short-term OD prediction in URT, and the proposed STSM plays an important role in improving the prediction accuracy.
The Inter-Relationships of Territorial Quality of Life with Residential Expansion and Densification: A Case Study of Regions in EU Member Countries
Authors: Ustaoglu Eda , Williams Brendan
Published: March 2024

High-density urban development is promoted by both global and local policies in response to socio-economic and environmental challenges since it increases mobility of different land uses, decreases the need for traveling, encourages the use of more energy-efficient buildings and modes of transportation, and permits the sharing of scarce urban amenities. It is therefore argued that increased density and mixed-use development are expected to deliver positive outcomes in terms of contributing to three pillars (social, economic, and environmental domains) of sustainability in the subject themes. Territorial quality of life (TQL)—initially proposed by the ESPON Programme—is a composite indicator of the socio-economic and environmental well-being and life satisfaction of individuals living in an area. Understanding the role of urban density in TQL can provide an important input for urban planning debates addressing whether compact development can be promoted by referring to potential efficiencies in high-density, mixed land use and sustainable transport provisions. Alternatively, low-density suburban development is preferable due to its benefits of high per capita land use consumption (larger houses) for individual households given lower land prices. There is little empirical evidence on how TQL is shaped by high-density versus low-density urban forms. This paper investigates this topic through providing an approach to spatially map and examine the relationship between TQL, residential expansion, and densification processes in the so-called NUTS2 (nomenclature of terrestrial units for statistics) regions of European Union (EU) member countries. The relative importance of each TQL indicator was determined through the entropy weight method, where these indicators were aggregated through using the subject weights to obtain the overall TQL indicator. The spatial dynamics of TQL were examined and its relationship with residential expansion and densification processes was analysed to uncover whether the former or the latter process is positively associated with the TQL indicator within our study area. From our regression models, the residential expansion index is negatively related to the TQL indicator, implying that high levels of residential expansion can result in a reduction in overall quality of life in the regions if they are not supported by associated infrastructure and facility investments.
Prediction of Bedform Dimensions on Alluvial Bed in Unidirectional Flow
Authors: Wang Rui , Yu Guoliang
Published: March 2024

In this study, the bedform dimensions of an alluvial bed in a unidirectional flow were experimentally investigated. A series of flume experiments was conducted; 700 sets of flume and field data were used in developing formulae for predicting the bedform dimensions on alluvial beds in unidirectional flow. Bedform dimensions include the length and height of bedforms generated by the lower and upper flow regimes; the resistance coefficient for the flow in different flow regimes is introduced into the proposed formulae. The momentum boundary-layer thickness was introduced as an independent variable instead of the flow depth. Based on a large amount of flume and field data, the coefficients of each parameter were determined; four typical formulae were used to compare the accuracy of the proposed formulae. The experimental results show that the momentum boundary-layer thickness, hydraulic radius, and resistance coefficient for the flow in different regimes correlate well with the bedform dimensions. The calculation results show that the dimensionless particle size should not be ignored in the calculation of bedform dimensions. The bedform dimensions have an obvious trend of rapid increase with an increase in the ratio of flow depth to sand size (H/d). The bedform dimensions obtained using the van Rijn method and the Engelund and Hansen method did not represent the variation trend of the bedform length in the upper flow regime with an increase in H/d when H/d was greater than 103. The calculations using the proposed formulae are more accurate and reasonable than those in previous studies predicting the bedform height and length on an alluvial bed in a unidirectional flow.
Evolutionary algorithm of Ecosystems and human genesis in the context of fundamental cultural studies
Authors:   Association for the Economics of Science and Technology in the Sphere of Culture, Information and Leisure, Independent Researcher, Galutsky G.M. , Khutsishvili V.G. ,   Association for the Economics of Science and Technology in the Sphere of Culture, Information and Leisure, Independent Researcher
Published: March 2024

A group of independent researchers tried to evaluate the hypotheses discussed about the origin and settlement of mankind, based on the concept of the genesis of the Ecosystem in the context of fundamental cultural studies. A detailed justification of the concept, on which the authors have been working for several years, was published in 2021 in the book “The Triumphant. The genesis of the Ecosystem in the context of fundamental cultural studies” (UDC 304.42, ISBN 978-5-901909-07-2). A comprehensive analysis of the evolution of the Ecosystem over billions of years, carried out by the authors, gives reason to believe that the point of view of social anthropology on the historical fate of the human race is based on incorrect initial data.The hypothesis of the genesis of humanity formulated and defended by the authors is as follows: 1. The controversy between atheists, agnostics and adherents of religious doctrines about the divinity of the creation of the earth and all that exists on it is a meaningless dispute that will not lead to the realization of the evolutionary algorithm of the Ecosystem, which has a clear goal — the creation of a being with unique properties that a person is endowed with. To realize this, it is necessary to consider the Ecosystem as a reality in which the rational and irrational components of being interact. 2. The evolutionary algorithm for the development of life is built on the principle of a branching tree of biota development options, the starting genome of which contained a combined formula “from simple to complex” and a mechanism for adapting biota to the radically changing state of the stagnant matter of the Ecosystem. 3. Man, as a kind of wildlife, arose simultaneously by the standards of geological time on different continents of the Earth. This was the prerequisite for racial differences in the areas of the initial settlement as a basis for the formation of the ethnogenetic diversity of the human population.
Concepts of “zoo” and “zookeeping” in Russian and foreign legislation
Authors:   Department of the state and municipal administration of the Institute of Public Administration and Civil Service of the Russian Presidential Academy of National Economy and Public Administration (Moscow, Russia) (IPACS, RANEPA), Ponkin I.V.
Published: March 2024

The article is devoted to the issues related to the legal regulation of zoos and zoo business. The article presents a selection of definitions of the concepts of “zoo” and “zookeeping”, established in the laws of the Russia and of some foreign states.
An Operating Stiffness Controller for the Medical Continuum Robot Based on Impedance Control
Authors: Duan Jinyu , Zhang Kai , Qian Kun , Hao Jianxiong , Zhang Zhiqiang , Shi Chaoyang
Published: March 2024

Continuum manipulators can conform to curvilinear paths and manipulate objects in complex environments, which makes it emerging to be applied in minimally invasive surgery (MIS). However, different and controllable operating stiffness of the continuum manipulator is required during different stages of surgery to achieve safe access or stable and precise operation. This work proposes an operating stiffness controller (OSC) for the typical tendon-driven continuum manipulator based on the variable impedance control method with Lagrangian dynamic modeling. This controller can adjust the operating stiffness by modifying the driving forces along the driving tendons of the continuum manipulator without changing its material or structure. The proposed OSC converts the damping and stiffness matrices of the impedance control into variable parameters. This merit allows it to dynamically adjust the operating stiffness of the continuum manipulator according to the desired constant or time-varying stiffness. Furthermore, the OSC stability can be proven based on a Lyapunov function, and its stiffness control performances have been analyzed and evaluated in both simulations and experiments. The OSC controller generated average relevant error values of 7.82% and 3.09% for the operating stiffness control experiments with constant and time-varying desired stiffness, respectively. These experimental results indicate that the OSC has high accuracy, stability, and strong robustness in the operating stiffness control tasks.
Systems analysis and mathematical modeling of partially two-stage processes of material flow distribution
Authors: Larysa Koriashkina , Danylo Lubenets
Published: March 2024

The partially two-stage process of material flow distribution in a logistics system is considered, which consists of enterprises that produce certain products and sell them directly to consumers or through distribution centers. It is assumed that the demand for products is continuously distributed throughout the territory of a certain region. The purpose of the work is to reduce transportation and organizational costs associated with the sale and storage of finished products for a network of production enterprises by developing models and methods of optimization tasks that allow determining the quantity, capacity, and coordinates of distri-bution centers and organizing logistics processes, rationally distributing transportation and material flows among all participants in the logistics process. The relevance of the work is due to the creation of territorially distributed multilevel companies that carry out the entire production cycle from raw material procurement with its comprehensive use, production of products to transportation to end consumers through distribution centers. The mathematical support of the formulated placement-distribution tasks is developed using the basic provisions of the theory of continuous problems of optimal subset division with the placement of subset centers, duality theory, linear programming methods of the transport type, modern algorithms of non-differentiable optimization. The presented models and algorithms allow solving a whole range of strategic planning problems that arise in the production, social, and economic spheres of activity.
DEVELOPMENT OF A CYBERPHYSICAL SYSTEM FOR MONITORING FIRE SAFETY
Authors: Nataliya Matveeva , Olexander Papanov
Published: March 2024

The Megamart company's cyber-physical fire safety system was developed with the possibility of flexible changing types and sets of functions performed by reprogramming. system uses RFID technology with the development of a computer network. The computer system allows for the system's technical and software modernization, as well as ensures the fulfillment of all functions of the technical assignment. The system was validated using a model of the corporate network scheme using the program Cisco Packet Tracer program.
ON MEASURING THE COMPONENTS OF INDUCTIVE IMPEDANCE USING THE THREE VOLTMETER METHOD
Authors: Mykola Tverdostup
Published: March 2024

The possibilities of the three voltmeter method for measuring inductance and its active re-sistance, as well as their frequency characteristics, are investigated. It is established that that in the frequency ange up to 100 kHz, the measurement error of inductance is no more than 0.3%, active resistance - 8.7%, and quality factor - 5%.
Design of software system architecture for medical-biological objects digital twins creating
Authors: Peschanskii Vladyslav , Sulema Yevgeniya
Published: March 2024

The paper introduces an innovative and universal object-oriented architecture specifically tailored for the creation of digital twins pertaining to medico-biological en-tities, with otolaryngology serving as the primary exemplar. The very essence of this architecture is its profound utilization of polymorphism. By capitalizing on this tech-nique, the architecture offers a substantial reduction in the workload and complexity software developers might face when there's a necessity to adapt or modify the sys-tem for alternative medical specializations. The genesis of this architecture stems from a recognized need to establish a more modular and adaptable framework that can cater to the rapidly evolving land-scape of medical technology and digital twinning. As the medical realm continues to burgeon, having such a flexible and scalable software blueprint becomes paramount, especially when aiming to maintain relevance and efficacy in diverse medical sectors. The paper offers a comprehensive breakdown of the various component groups that constitute the system. Each group is dissected to provide clarity on its function, importance, and integration with the broader system. This hierarchical and systematic representation ensures that software developers, medical researchers, and other stakeholders have a clear roadmap when engaging with the architecture. In summation, this research stands as a pivotal contribution to the intersection of medical technology and software development. By providing a robust and adapt-able architectural blueprint for digital twinning in the medico-biological domain, it paves the way for future innovations and ensures that the medical community can harness the power of digital replication with increased accuracy, efficiency, and ver-satility.
Smart watch software for independent sports and fitness
Authors: Tetiana Likhouzova , Anton Shcherbakov
Published: March 2024

According to available statistics, the most popular smart watch among users is the Apple Watch. Today, there are more than 100 million unique users of this device, 75% of whom use it for sports. With a wide array of different sensors to track a user's physical parameters, neither Apple nor third-party developers have yet developed software to systematize all the collected data to improve an athlete's physical pa-rameters and achieve personal athletic goals. The purpose of the research is to find the possibility of improving the physical parameters of a novice athlete by means of a comprehensive analysis of his activity data collected by a smart watch and creating more personalized recommendations during training based on this data. There are many fitness apps available for the Apple Watch, each with its own unique features and features. Unfortunately, none of the analyzed applications pro-vide sufficient information regarding the correct execution of training and the collec-tion of indicators, which is a disadvantage for users who want to do sports without risks to their health. One of the main challenges of software development for smartwatches is the lack of extensive monetization opportunities. This led to the lack of interest of large companies and teams in this type of software. Small screen size and limited process-ing power compared to desktop or mobile devices are also issues. This means that developers must optimize both the user interface and the algorithms of their software product to increase the speed of the application. Another challenge is the diversity of the smartwatch market, where different devices run on different operating systems and have different hardware specifications. You have to consider the specifics and limitations of each device and platform and make sure that your apps are optimized for each of them, or focus on building your software products for only a limited num-ber of devices. Due to the lack of tools for developing applications for several platforms at once, the path of developing an application for only one platform - for WatchOS - was chosen. Also, one of the goals is to create an application that is completely autono-mous from a smartphone. For this, a simple and minimalistic interface and a simple algorithm for analyzing training data have been developed. The proposed application is focused on running. Statistics will be collected dur-ing the first few training sessions. After starting the activity, the application will start displaying all the standard information, such as pace, heart rate, activity time, dis-tance traveled. This data comes from the sensors and modules of the smart watch. When basic training statistics are collected, the app will begin to display tips on how to continue training.
KHẢO SÁT MỘT SỐ ĐIỀU KIỆN ẢNH HƯỞNG ĐẾN KHẢ NĂNG BIỂU HIỆN ENTEROCIN E-760 TÁI TỔ HỢP TRONG Pichia pastoris X33
Authors: Anh Tô Lan , Huyền Đỗ Thị , Hồng Lê Thị Thu , Thư Nguyễn Thị Tâm , Việt Nguyễn Khánh Hoàng
Published: March 2024

Enterocin E-760 là một trong số ít các bacterocin kháng khuẩn phổ rộng, kháng cả vi khuẩn Gram dương và Gram âm, đặc biệt là một số loại vi khuẩn gây ngộ độc thực phẩm như Listeria monocytogenes, Escherichia coli, Salmonella... Tuy nhiên, vi khuẩn Enterococcus sp. sinh tổng hợp enterocin E-760 lại có khả năng tiết độc tố và thu nhận các gen ngoại lai như các gen kháng kháng sinh. Do đó, việc tạo ra enterocin E-760 cũng như các bacteriocin khác bằng con đường tái tổ hợp, sử dụng hệ biểu hiện an toàn nhận được nhiều sự quan tâm của các nhà khoa học. Trong nghiên cứu này, một số điều kiện nuôi cấy nấm men Pichia pastoris X33 cho quá trình thu nhận enterocin E-760 được khảo sát. Môi trường được lựa chọn để biểu hiện enterocin E-760 là BMMY ở pH 7. Chủng nấm men tái tổ hợp được cảm ứng bằng methanol đến nồng độ cuối là 0,5% khi mật độ tế bào đạt OD600 là 20-30. Enterocin E-760 bền ở 100ºC trong 15 phút, hoạt tính ổn định ở pH từ 4 đến 9. Enterocin E-760 có khối lượng khoảng 11-12 kDa, thể hiện hoạt tính kháng khuẩn mạnh với chủng Gram âm Salmonella enteritidis ATCC 13076 (640 AU/mL) và chủng Gram dương L. monocytogenes ATCC 35152 (160 AU/mL). Các kết quả trên là cơ sở bước đầu để sản xuất enterocin E-760 ứng dụng trong bảo quản thực phẩm.
ĐÁNH GIÁ TÁC DỤNG HẠ ĐƯỜNG HUYẾT CỦA CAO CHIẾT TỪ HẠT CÀ PHÊ XANH (COFFEA CANEPHORA PIERRE EX A. FROEHNER) TRÊN CHUỘT NHẮT TRẮNG ĐƯỢC NUÔI BÉO VÀ GÂY TĂNG ĐƯỜNG HUYẾT BỞI STREPTOZOTOCIN
Authors: Vĩnh Hà Hoàng Anh , Phúc Trần Lưu , Thu Hoàng Thị Minh , Hùng Trần Mạnh , Khoảng Lê Trung
Published: March 2024

Mục tiêu của nghiên cứu là đánh giá tác dụng hạ glucose máu của cao chiết cà phê xanh trên chuột nhắt trắng. Cao chiết cà phê xanh được tiêu chuẩn hóa theo Dược Điển Việt Nam V trước khi thử nghiệm. Chuột nhắt trắng được nuôi với chế độ ăn giàu chất béo (High Fat Diet - HFD) trong 8 tuần để gây tăng lipid và tiền đái tháo đường, sau đó tiêm phúc mô streptozotocin (STZ) liều 100 mg/kg trọng lượng chuột để gây bệnh đái tháo đường. Cao chiết cà phê xanh được thử nghiệm ở liều 150 mg/kg và 300 mg/kg trọng lượng chuột. Đánh giá tác dụng hạ đường huyết dựa vào chỉ số glucose trong máu vào các ngày thứ 7, ngày thứ 14 và ngày thứ 21 khi uống cao chiết. Kết quả sau khi cho chuột ăn thức ăn có chứa hàm lượng chất béo cao (khoảng 60% năng lượng từ chất béo, với thành phần chủ yếu của chất béo là mỡ heo) trong 8 tuần, có sự khác biệt có ý nghĩa thống kê đối với các chỉ số: trọng lượng chuột, cholesterol toàn phần (TC), triglycerid (TG) (p < 0,001). Đối với kết quả khảo sát tác dụng trên glucose máu ở chuột được gây đái tháo đường typ 2 cho thấy, cả hai nhóm chuột uống cao cà phê có xu hướng giảm glucose huyết có ý nghĩa thống kê sau 21 ngày (p < 0,05). Kết quả thực nghiệm trong nghiên cứu này cho thấy cao chiết từ hạt cà phê xanh có thể được sử dụng hỗ trợ điều trị bệnh đái tháo đường typ 2.
ĐÁNH GIÁ SỰ THAY ĐỔI MỘT SỐ TÍNH CHẤT HÓA LÝ VÀ HOẠT CHẤT SINH HỌC CỦA THANH LONG RUỘT ĐỎ (Hylocereus polyrhizus) TRONG THỜI GIAN TẠM TRỮ CHỜ CHẾ BIẾN
Authors: Hà Trần Thị Như , Linh Lê Thị Thùy , Quân Trần Hà Đông , Nhu Nguyễn Hoàng , Lộc Nguyễn Bảo , Hằng Nguyễn Thị Thu , Thanh Nguyễn Hữu
Published: March 2024

Thanh long ruột đỏ (Hylocereus polyrhizus) giàu hoạt chất sinh học nên thường được dùng trong chế biến hoặc tiêu thụ tươi. Việc theo dõi quá trình biến đổi các tính chất hóa lý và các hoạt chất sinh học trong thời gian tạm trữ thanh long ruột đỏ sau thu hoạch có ý nghĩa quan trọng nhằm điều phối tốt nhất trong tiêu thụ và chế biến. Trong nghiên cứu này, Thanh long ruột đỏ loại 1 và loại 2 được thu hoạch ở Trà Vinh và tạm trữ để tiến hành đánh giá sự thay đổi một số tính chất hóa lý và hoạt chất sinh học trong thời gian là 10 ngày. Kết quả cho thấy, thanh long ruột đỏ bị thay đổi tính chất vật lý và hàm lượng các hoạt chất sinh học trong thời gian tạm trữ. pH và hàm lượng chất khô tăng ít, trong khi hàm lượng axit malic, độ cứng quả, vitamin C, polyphenol giảm dần. Trong thời gian này, chỉ betacyanin giảm không đáng kể. Theo nghiên cứu này, thanh long ruột đỏ có thể bảo quản từ 6-8 ngày trước khi chế biến hoặc ăn tươi.
ĐÁNH GIÁ HOẠT TÍNH GÂY ĐỘC TẾ BÀO UNG THƯ CỦA CAO CHIẾT VÀ HỢP CHẤT PHÂN LẬP TỪ CÂY THUỐC VÒI (POUZOLZIA PENTANDRA)
Authors: Hưng Nguyễn Anh , Hợp Nguyễn Quang , Tâm Hà Thị Minh , Giang Vũ Thị , Lâm Đỗ Tiến , Huệ Nguyễn Thị , Đạt Vũ Thành , Linh Nguyễn Ngọc , Lê Vũ Thị Thu
Published: March 2024

Từ dịch chiết cặn chiết n-hexan của cây thuốc vòi (Pouzolzia pentandra) bằng các phương pháp sắc ký, kết hợp với phương pháp tinh chế kết tinh lại trong dung môi thích hợp, 6 hợp chất: β-sitosterol (1), β-sitosterol-3-O-β-D-glucopyranoside (5), (20S)-20-hydroxydammar-24-en-3-one (4), quercetin (3) và kaempferol (2). Cấu trúc hóa học của chúng được xác định bằng phổ cộng hưởng từ hạt nhân một chiều và hai chiều. Các phân đoạn còn lại được tiếp tục phân lập và xác định cấu trúc hóa học. Kết quả thử nghiệm hoạt tính sinh học trên các dòng tế bào ung thư HepG2, PC3, A539 cho biết các cặn chiết và chất sạch thể hiện hoạt tính ở các mức độ khác nhau. Trong đó, hợp chất 4 đã biểu hiện hoạt tính gây độc tế bào với dòng tế bào ung thư gan (HEP-G2) tốt nhất với giá trị IC50 14,65 µg/ml. Nghiên cứu này đã bổ sung và làm phong phú thêm về thành phần hóa học và hoạt tính sinh học của các thực vật chi Pouzolzia nói chung và loài Pouzolzia pentandra nói riêng.
THIẾU VITAMIN D Ở TRẺ EM VIÊM PHỔI TỪ 2 THÁNG ĐẾN 60 THÁNG TUỔI TẠI BỆNH VIỆN TRUNG ƯƠNG THÁI NGUYÊN
Authors: Xuân Nguyễn Thanh , Sơn Nguyễn Văn
Published: March 2024

Nghiên cứu nhằm xác định tỷ lệ thiếu vitamin D ở trẻ em từ 02 tháng đến 60 tháng tuổi mắc viêm phổi cộng đồng. Nghiên cứu tiến cứu mô tả cắt ngang được thực hiện trên 90 bệnh nhân viêm phổi  từ 02 tháng đến 60 tháng tuổi  tại Bệnh viện Trung ương Thái Nguyên từ  tháng 7/2022 - 6/2023. Kết quả nghiên cứu cho thấy tổng số 90 trẻ tham gia nghiên cứu có  tuổi trung bình là 17,88±0,89 tháng, nhóm tuổi gặp nhiều nhất là 12-24 tháng. Trong đó, tỷ lệ viêm phổi chiếm 72,2%, viêm phổi nặng chiếm 27,8%. Tỷ lệ trẻ thiếu hụt vitamin D chiếm 25,6%, thiếu vitamin D là 35,6%. Nồng độ 25(OH)D trung bình 28,87±1,36 ng/ml, thấp nhất là 4,81 ng/ml và cao nhất là 65,78 ng/ml. Tỷ lệ thiếu và thiếu hụt vitamin D ở nhóm tuổi 12-24 tháng chiếm tỷ lệ cao nhất.  Tỷ lệ thiếu và thiếu hụt vitamin D ở nữ cao hơn nam. Có mối liên quan giữa nồng độ 25(OH)D huyết thanh với mức độ nặng của viêm phổi. Nồng độ 25(OH)D thấp thì nguy cơ viêm phổi nặng cao.
NÂNG CAO KẾT QUẢ NUÔI CÁ KHOANG CỔ NEMO (Amphiprion ocellaris) THÔNG QUA VIỆC BỔ SUNG NGUỒN ASTAXANTHIN TỰ NHIÊN TÁCH CHIẾT TỪ COPEPODA (Pseudodiaptomus annandalei)
Authors: Trang Trần Thị Lê , Hậu Lương Thị , Hoàng Dương Nguyễn , Khanh Phạm Thị , Nam Đoàn Xuân , Dũng Trần Văn
Published: March 2024

Mặc dù được ưa chuộng nhưng tốc độ sinh trưởng chậm và màu sắc kém của nguồn cá khoang cổ sản xuất nhân tạo là trở ngại lớn trong nỗ lực phát triển nghề nuôi đối tượng này. Các chất có hoạt tính sinh học cao, ví dụ như astaxanthin hay vitamin, đã được chứng minh là có hiệu quả trong việc cải thiện tốc độ sinh trưởng, màu sắc và sức khỏe tổng thể ở nhiều loài cá. Trong nghiên cứu này, chúng tôi đánh giá tác động của việc bổ sung astaxanthin, tách chiết từ Copepoda, vào thức ăn lên kết quả nuôi cá nemo. Sáu nghiệm thức bổ sung astaxanthin được thử nghiệm, gồm 0 (đối chứng), 50, 150, 250, 350 và 450 mg/kg thức ăn. Cá được nuôi trong các bể kính 60 lít với 15 con mỗi bể. Mỗi nghiệm thức được lặp lại 3 lần trong thời gian 75 ngày. Kết quả cho thấy các chỉ tiêu sinh trưởng (SGRL, SGRW), hệ số chuyển hóa thức ăn và màu sắc của cá đều được cải thiện tương ứng với hàm lượng astaxanthin bổ sung, giá trị tốt nhất được xác định trong khoảng 350 – 450 mg/kg thức ăn (P < 0,05). Tỷ lệ sống của cá không bị ảnh hưởng bởi việc bổ sung astaxanthin (P > 0,05). Nghiên cứu cung cấp một giải pháp tích cực, từ nguồn astaxanthin tự nhiên, nhằm nâng cao hiệu quả nuôi loài cá cảnh biển này.
Exploring The Reasons Of Indonesian Young Adult Consumers Toward Sustainably Packaged Food & Beverages Product
Authors: Gunawan Arie , Amalia Fatya Alty , Ramadhan Muhamad , Bansah Pearl Fafa
Published: March 2024

Sustainable packaging in the F&B industry is now widely used and developed by companies to address climate change issues or reduce costs and increase consumer product value. However, targeted consumers do not always buy products in sustainable packaging for various unknown reasons. The originality of this study is the creativity of young adults as participants, as most researchers do not have a deeper understanding of why consumers are most likely and least likely to purchase sustainably packaged products. It is a consumer survey. In addition, this study contributes to a comprehensive understanding of young adult consumers, purchasing intent, and awareness of sustainable packaging of F&B products. The purpose of this qualitative study was to thoroughly investigate why consumers are most likely and least likely to purchase sustainable packaged F&B products. Twenty-two young adult consumers aged 18-24 were asked the open-ended questions to gain a more in-depth understanding of the topic under the study.  Most participants associate sustainable packaged F&B products with price, quality, and appearance as reasons for deciding whether to buy the product. However, some participants also mentioned digital marketing efforts: social media marketing, influencer use, and trend tracking, as reasons for being involved in the product. This study suggests that companies are leveraging digital and traditional strategies to create a complete green marketing mix that reaches a broader range of customers.
Parental practices and addictions in the adolescent population
Authors: PACHECO-AMIGO Beatriz Mabel , LOZANO-GUTIÉRREZ Jorge Luis , MIRANDA-MEDINA Carlos Federico , SOLIS-RECÉNDEZ Emma Perla
Published: March 2024

Objectives: Identify the protection and risk factors for substance use based on parenting practices. Methodology: The research carried out was descriptive in scope, from a mixed approach (qualitative and quantitative) using the observational, descriptive and cross-sectional method, in turn, the quantitative cut is integrated by applying standardized instruments such as the Parental Practice Scale for adolescents and Depression Scale of the Center for Epidemiological Studies CES-DR, for this, a sample of 57 adolescents aged 15 to 17 years was obtained. Contribution: It was found in the results that the nuclear family is a protection factor, however, in some cases it is the same that becomes a latent risk factor in adolescents, through the impositions generated by the parents, using a parentage style of authoritarianism, coupled with the little communication that exists between family members.
Sustainable tourism. Puebla and other entities
Authors: GONZÁLEZ-HERRERA Karina Concepción , MORAN-BRAVO Luz del Carmen , ORTEGA-PÉREZ Elizabeth
Published: March 2024

This document is forged as collaborative research carried out by researchers of our country Mexico, in the constant search for an update and proximity in rural localities of different entities. The importance of taking advantage of the environment, nature and its infrastructure represents a value for each territory, sustainability allows that in the future the new generations make use of these and are generationally enjoyable through awareness, awareness, orientation, training of the inhabitants of these. One of the ways in which the wealth of the territories has been valued is through tourism, being that tourism is to make a trip, but with the next return of the place from where it leaves in an original way (Ardilla, 2015). Sustainable tourism is realized when the tourist, who is the one who goes to another place for reasons other than the usual one, considers conscious actions whose positive effects have an impact on the present and the future, considering economic, social, and environmental aspects (Saeteros et al., 2019). Through the opening of businesses in the new labor normality, following the mobility limitations required in the countries of the world, generated by the COVID-19, it was clearly perceived the economic impulse that influenced the tourist influx to the archaeological zones, the Magical Towns of Mexico, the desert areas and the municipalities with beaches, among other characteristics that allow highlighting the attractive and that mobilizes people to make these places enjoyable. It is then, when great challenges are rescued, from environmental care, gastronomy as cultural legacies, infrastructures that are currently enjoyed and the revaluation of mobility for tourism purposes and its impact on the receiving localities, from a social, territorial and mobility scope.
Penambahan ekstrak buah pepaya pada pakan buatan terhadap peningkatan kecerahan warna ikan badut (Amphiprion ocellaris)
Authors: Seran Maria Florida Abuk , Sunadji Sunadji , Tobuku Ridwan
Published: March 2024

Penelitian bertujuan Untuk mengetahui apakah ekstrak buah pepaya pada pakan buatan mampu meningkatkan warna pada  ikan Badut (A. ocellaris) dan untuk mengetahui dosis ekstrak buah pepaya yang optimal untuk meningkatkan kecerahan warna pada ikan Badut (A. ocellaris). Pengumpulan data dari bulan mei-juli di UPT Oesapa, kecamatan kelapa lima. Rancangan yang di gunakan dalam penelitiaan adalah rancangan acak lengkap (RAL) dengan 4 perlakuan dan 3 kali ulangan. Terdiri dari  perlakuan control (tanpa ekstrak buah pepaya ), perlakuan A (ekstrak buah pepaya 5 mg), perlakuan B (ekstrak buah papaya 10 mg), dan perlakuan C (ekstrak buah pepaya 15 mg). Hasil penelitian menunjukan bahwa penambahan ekstrak buah pepaya dengan dosis yang berbeda dalam dalam pakan dapat meningkatkan kecerahan warna ikan badut. Peningkatan tertinggi diperoleh pada perlakuan C yaitu penambahan 15 mg/g ekstrak buah pepaya dalam pakan komersial nilai kecerahan warna 4.1. Sedangkan berat mutlak dan kelulushidupan ikan badut tidak berbeda antar setiap perlakuan.

 

Kata kunci : Ekstrak buah papaya, ikan badut, kecerahan, kelangsungan hidup
SINTESIS BIOPLASTIK DARI RUMPUT LAUT Eucheuma cottonii DI KOTA KUPANG
Authors: Nurdin Wiwin N , Sari Kumala , Mahmud A NR
Published: March 2024

Penggunaan plastik sintetik yang berasal dari pemrosesan minyak bumi yang meningkat menimbulkan pencemaran pada lingkungan. Oleh karenanya dibutuhkan alternatif plastik yang dapat terurai secara alami (plastik biodegdradabel) seperti yang berasal dari rumput laut Euchema cottonii. Penelitian ini bertujuan untuk membuat bioplastik dari ekstrak rumput laut Euchema cottonii dengan penambahan kitosan dan mengetahui karakteristik bioplastik yang meliputi uji biodegradable dan uji kelarutan. Metode yang digunakan adalah experimental lab. Ekstraksi menggunakan perlakuan dengan larutan KOH 0,6%, proses ekstraksi menghasilkan gel karagenan yang digunakan sebagai bahan pembuatan bioplastik. Pembuatan bioplastik dibuat menjadi 3 varian menggunakan campuran kitosan 0,5gr, natrium benzoat 0,5gr, dan gliserol 4 tetes. Hasil dari pembuatan bioplastik menunjukan tekstur, warna, dan kelenturan dari masing-masing bioplastik berbeda-beda. Hasil penelitian karakteristik menunjukan bahwa bioplastik akan terdegdradasi atau terurai dalam waktu 2 hari sedangkan bioplastik akan membutuhkan waktu 2 sampai 4 jam untuk terlarut

 

Kata kunci: Euchema cottonii, Sintesis Bioplastik, Kupang
Menumbuhkan Pakan Alami Di Tambak Ikan Bandeng (Chanos Chanos) Menggunakan Kombinasi Kotoran Sapi, Kotoran Ayam, Jerami Padi, Pupuk Urea, Dan Sp-36
Authors: Akoit Aloysius Samuel , Linggi Yulianus , Liufeto Franchy Ch
Published: March 2024

Ikan bandeng (Chanos chanos) merupakan salah satu sumberdaya perikanan yang dihasilkan dari budidaya tambak. Peneltian ini bertujuan untuk mengetahui tingkat pertumbuhan ikan bandeng dalam tambak yang diberi pupuk dari kombinasi kotoran sapi, kotoran ayam, jerami padi, pupuk urea dan SP-36 dengan parameter yang diukur pada penelitian ini meliputi pertumbuhan mutlak, tingkat kelulushidupan, kepadatan fitoplankton dan kualitas air ( suhu, pH, salinitas). Hasil penelitian ini menunnjukkan bahwa pemupukan dasar tambak menggunakan kombinasi kotoran sapi, kotoran ayam, jerami padi, pupuk urea dan SP-36 dapat meningkatkan pertumbuhan ikan bandeng (Chanos-chanos). Rata-rata berat mutlak ikan bandeng yang didapat selama penelitian sebesar 68 gram, sedangkan rata-rata panjang mutlak ikan bandeng sebesar 15 cm. Terdapat 7 jenis fitoplankton yang terdiri dari 7 kelas ; antara lain Chlorophyta, Dinophyceae, Bacillariopyceae, Cryptophyta, Chlorophyceae, Cyanobacteria, dan Chaetoceros sp.

Kata kunci : Ikan bandeng, fitoplankton, pemupukan, kotoran sapi, kotoran ayam, jerami padi, pupuk urea, SP-36, tambak.
Pengaruh Lama Fermentasi Kulit Pisang Kepok (Musa paradisiaca L.) Terhadap Pertumbuhan dan kelangsungan Hidup Ikan Bandeng (Chanos chanos)
Authors: Geno Yovita Jessi , Dahoklory Nicodemus , Rebhung Felix
Published: March 2024

Penelitian ini bertujuan untuk mengetahui pengaruh lama fermentasi kulit pisang kepok (Musa paradisiaca L.) terhadap pertumbuhan dan kelangsungan hidup ikan bandeng (Chanos chanos). Penelitian ini dilaksanakan dalam kurun waktu 2 bulan di Tambak Bandeng Desa Bipolo. Lama waktu fermentasi yang diuji di Laboratorium Kimia Pakan, Fakultas Peternakan Kelautan dan Perikanan Universitas Nusa Cendana yaitu 6 hari, 8 hari, dan 10 hari. Penelitian ini menggunakan metode Rancangan Acak Lengkap (RAL). Dalam penelitian ini terdapat 3 perlakuan masing-masing 3 ulangan dan kontrol. Perlakuan yang dimaksud adalah Perlakuan A (Kulit pisang fermentasi 30 hari + pellet FF-999 30 hari berikutnya), Perlakuan B (Pellet FF-999 30 hari + kulit pisang fermentasi  30 hari berikutnya), Perlakuan C (Pemberian kulit pisang hasil fermentasi selama 60 hari) dan Kontrol (100% pemberian pellet FF-999 selama 60 hari). Hasil uji laboratorium menunjukkan bahwa lama fermentasi kulit pisang terbaik terdapat pada hari ke 10 dengan kandungan protein tertinggi yaitu sebesar 11,015%. Lama waktu fermentasi 10 hari digunakan untuk fermentasi kulit pisang sebagai pakan untuk menunjang pertumbuhan dan kelangsungan hidup ikan bandeng. Hasil penelitian menunjukkan bahwa adanya pengaruh lama fermentasi kulit pisang 10 hari terhadap pertumbuhan berat mutlak (p<0.05), namun tidak berpengaruh terhadap kelangsungan hidup ikan bandeng.

 

Kata Kunci : Fermentasi, Kulit Pisang Kepok, Ikan Bandeng, Pertumbuhan, Kelangsungan Hidup
PEMANFAATAN BARANG BEKAS MENJADI AKUARIUM DIKALANGAN MAHASISWA POLITEKNIK PERTAHANAN UNIVERSITAS PERTAHANAN REPUBLIK INDONESIA
Authors: Liubana Debora Victoria
Published: March 2024

Barang bekas adalah barang yang tidak terpakai sehingga seringkali dibiarkan begitu saja di rumah dan menumpuk di gudang ataupun sudut-sudut rumah sehingga dapat mengganggu pemandangan dan kesehatan. Barang bekas tersebut diantaranya paralon, kipas angin, pot bunga plastik, sendal dan botol. Pemanfataan dan pengelolaan  sampah  rumah  tangga  ataupun  barang  bekas adalah kegiatan yang sistematis, menyeluruh dan berkesinambungan yang meliputi pengurangan dan  penanganan  sampah  rumah  tangga. Kegiatan daur  ulang  dengan sentuhan kreativitas bisa  dilakukan  dengan  memanfaatkan  barang  bekas  menjadi  barang  yang  memiliki nilai  estetika dan ekonomis.  Tujuan  utama  dari kegiatan yang dilakukan oleh mahasiswa dan dosen yaitu memanfaatkan  barang - barang  bekas  menjadi akuarium untuk budidaya ikan dan bernilai ekonomis.

                                                                                                               

Kata kunci : Akuarium, barang bekas, daur ulang, ekonomis, gudang
Determination Shelf Life of Sun-Dried Pork Jerky using the Accelerated Shelf-Life Test Method (Case Study in Debali MSMEs, Kupang City)
Authors: Toha Larry Richard Wellem , Laut Meity Marviana , Kana Lukista Christine
Published: March 2024

Kemasan dendeng yang diproduksi oleh UMKM jarang sekali disertai tanggal kadaluwarsanya. Penentuan umur simpan produk pangan seperti dendeng perlu dilakukan untuk menjamin keamanan pangan. Tujuan dari penelitian ini adalah untuk mengetahui umur simpan dendeng babi yang dijemur produksi Debali dengan menggunakan metode Accelerated Shelf-Life Testing berdasarkan persamaan Arrhenius. Dendeng babi yang dijemur yang diproduksi oleh UMKM Debali di Kota Kupang digunakan dalam penelitian ini. Dendeng babi disimpan dalam inkubator selama 30 hari pada tiga suhu yaitu 25 °C, 35 °C, dan 45 °C. Setiap lima hari dilakukan pengujian kualitas organoleptik seperti warna, rasa, bau, tekstur, dan daya terima. Uji organoleptik diikuti 7 panelis. Dengan menggunakan metode ASLT, lama penyimpanan dendeng adalah 30 hari pada suhu 25 °C, 29 hari pada suhu 35 °C, dan 28 hari pada suhu 45 °C. Kesimpulannya, dendeng babi yang dijemur produksi Debali mampu bertahan di suhu ruangan maksimal 30 hari.
Vectores de transmisión de CPsV
Authors:   , Simeone Melina Ailín
Published: March 2024

Comparación estadística de un método de detección de citrus psorosis virus (CPsV) mediante PCR cuantitativa en tiempo real (RT-qPCR) con el método de Indexing Biológico para el diagnóstico de la enfermedad psorosis de los cítricos. Luego esta metodología es utilizada para determinar la transmisión de CPsV mediante Olpidium virulentus, Aphis gossypii, Aphis spiraecola y Toxoptera citricida.
Crup diftérico: su tratamiento
Authors:   , Rossotti Noemí Rosa
Published: March 2024

Contenido: definición, etiología, patogenia, diagnóstico diferencial, pronóstico, tratamiento.