bluuebunny/crossref_metadata_2025 huggingface dataset:
Lobate Lac Scale, Paratachardina lobata lobata (Chamberlin) (Hemiptera: Sternorrhyncha: Coccoidea: Kerriidae)
Authors: Howard F. W. , Pemberton Robert , Hamon Avas , Hodges Greg S. , Steinberg Bryan , Mannion Catharine M. , McLean David , Wofford Jeanette
Published: July 2021

A species of scale insect new to Florida is potentially one of the most devastating pests of trees and shrubs in the state's history. The lobate lac scale, Paratachardina lobata lobata (Chamberlin) (Hemiptera: Sternorrhyncha: Coccoidea: Kerriidae), a scale insect native to India and Sri Lanka, was found for the first time in Florida in August 1999 by personnel of the Florida Department of Agriculture and Consumer Services, Division of Plant Industry (DPI) (Hamon 2001). This document is EENY-276, one of a series of the Department of Entomology, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Date printed: November 2002. Revised: May 2004.

EENY-276/IN471: Lobate Lac Scale, Paratachardina lobata lobata (Chamberlin) (Hemiptera: Sternorrhyncha: Coccoidea: Kerriidae) (ufl.edu)
Stubby-Root Nematode, Paratrichodorus minor (Colbran) Siddiqi (Nematoda: Adenophorea: Triplonchida: Diphtherophorina: Trichodoridae: Trichodoridae)
Authors: Crow William T.
Published: July 2021

Nematodes in the family Trichodoridae (Thorne, 1935) Siddiqi, 1961, are commonly called "stubby-root" nematodes, because feeding by these nematodes can cause a stunted or "stubby" appearing root system. Paratrichodorus minor is the most common species of stubby-root nematode in Florida, and in tropical and sub-tropical regions worldwide. Paratrichodorus minor is important because of the direct damage it causes to plant roots, and also because it can transmit certain plant viruses. This document is EENY-339, one of a series of Featured Creatures from the Entomology and Nematology Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Published: November 2004.

EENY339/IN616: Stubby-Root Nematode, Nanidorus minor (Colbran) Siddiqi (syn. Paratrichodorus minor, P. christiei, Trichodorus minor, T. christiei) (Nematoda: Adenophorea: Triplonchida: Diphtherophorina: Trichodoridea: Trichodoridae) (ufl.edu)
Pesticide Container Rinsing
Authors: Dean Thomas W. , Nesheim O. Norman , Fishel Frederick M.
Published: July 2021

This document explains what procedures are involved in creating a legally empty container. This document is PI-3, one of a series of the Pesticide Information Office, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Revised May, 2005. 

PI-3/PI003: Pesticide Container Rinsing (ufl.edu)
Restricted Use Pesticides
Authors: Fishel Frederick M.
Published: July 2021

Restricted use pesticides (RUP) are only for retail sale to, and use by, certified applicators or persons under their direct supervision, and only for those purposes covered by the applicator's certification. When a pesticide is classified as restricted, the label will state "Restricted Use Pesticide" at the top of the front panel. Below this heading may be a statement describing the reason for the restricted classification. There are various reasons which are determined by the U.S. Environmental Protection Agency (EPA) why a particular pesticide is classified as restricted. These criteria involve the EPA's determination that the pesticide may be hazardous to human health or to the environment even when used according to the label. This document is PI-36, one of a series of the Pesticide Information Office, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Published March 2005.
Pesticide Provisions of the Florida Agricultura Worker Safety Act (FAWSA)
Authors: Fishel Frederick M.
Published: July 2021

The purpose of this guide is to provide a summary of the pesticide provisions of the recently enacted Florida Agricultural Worker Safety Act (FAWSA) and the definitions that are used in its language. This document is PI-41, one of a series of the Pesticide Information Office, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Published April, 2005.

PI-41/PI078: Pesticide Provisions of the Florida Agricultural Worker Safety Act (FAWSA) (ufl.edu)
Licensing of Pesticide Dealers in Florida
Authors: Fishel Frederick M.
Published: July 2021

This document explains who needs a pesticide dealer license in Florida, how to obtain the license and the records required to be kept by pesticide dealers.  This document is PI-49, one of a series of the Pesticide Information Office, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Original publication date June 2005.

PI-49/PI086: Licensing of Pesticide Dealers in Florida (ufl.edu)
Watermelon Pest Management Strategic Plan (PMSP)
Authors: Mossler Mark A.
Published: July 2021

Florida ranks first in the U.S. in the production of watermelon, accounting for nearly 20 percent of national production. In 2001-2002, 759 million pounds of watermelon valued in excess of $62 million were produced on 23,000 acres ($2,700/acre). Concentrated production occurs in the southern region of the state during the winter months. As the spring arrives, plantings start northward and scatter out across the state. For this reason, a Pest Management Strategic Plan (PMSP) meeting for the Florida watermelon industry was conducted October 14, 2004 at the UF/IFAS Southwest Florida Research and Education Center in Collier County, Florida. This document is PI-52, one of a series of the Pesiticide Information Office, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Original publication date August 2005.
Powdery Mildew of Strawberries
Authors: Peres Natalia A. , Mertely James C.
Published: July 2021

Powdery mildew, caused by Sphaerotheca macularis, occurs in most areas of the world where strawberries are grown. This is document PP-208 a publication of the Plant Pathology Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL. Publication date: March 2005.

PP-208/PP129: Powdery Mildew of Strawberries (ufl.edu)
Diseases in Florida Vegetable Garden Beans: Bush, Lima, Pole, Wax, Southern Peas, English Peas, and Snow Peas
Authors: Pernezny Ken , Palmateer Aaron , Kucharek Tom
Published: July 2021

The pathogenic microorganisms that attack garden vegetables, including Bush beans, Lima beans, Pole beans, Wax beans, Southern peas, English peas, and Chinese or Snow peas can be classified into four major groups: fungi, bacteria, nematodes, and viruses. This document is PP-209, one of a series of the Plant Pathology Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Original publication date June 2005.
Increasing Efficiency and Reducing Costs of Citrus Nutritional Programs
Authors: Zekri Mongi , Obreza Thomas , Schumann Arnold
Published: July 2021

To maintain a viable citrus industry, Florida growers must consistently produce large, high quality, economic fruit crops from year to year. Efficiently producing maximum yields of high quality fruit is difficult without an understanding of soils and nutrient requirements of bearing citrus trees. Most Florida citrus is grown on soils inherently low in fertility with low cation exchange capacity (CEC) and low water-holding capacity, thus they are unable to retain sufficient quantities of available plant nutrients against leaching by rainfall or excessive irrigation. This document is Fact Sheet SL222, a fact sheet of the Soil and Water Science Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Original publication date January 2005.

SL222/SS442: Increasing Efficiency and Reducing Costs of Citrus Nutritional Programs (ufl.edu)
A Close-up Look at Screens for Excluding Asian Citrus Psyllids
Authors: Ebert Timothy A. , Schumann Arnold W , Waldo Laura , Stanton Daniel , Rolshausen Philippe
Published: July 2021

Building a physical barrier around citrus trees or groves can prevent contact between trees and Asian citrus psyllids, the carrier of the pathogen that causes huanglongbing. This new 4-page article is for growers, scientists, and industries that are interested in this approach to protect citrus from huanglongbing. Written by Timothy A. Ebert, Arnold W. Schumann, Laura Waldo, Daniel Stanton, and Philippe Rolshausen, and published by the UF/IFAS Department of Soil and Water Sciences.
The Role of Flow in the Everglades Landscape
Authors: Fling Holly E. , Aumen Nicholas G. , Armentano Tom , Mazzotti Frank J.
Published: July 2021

The Comprehensive Everglades Restoration Plan (CERP) aims to improve water quantity, timing, distribution, and quality of the Greater Everglades System (Figure 1) over the next 35 years (SFERTF 1998). Not only is it the most expensive (8 billion dollars, 1999) and ambitious ecological restoration ever undertaken, but it involves multiple agencies and organizations analyzing natural and ecological attributes to recover the natural system. A critically important but often overlooked aspect of the Everglades is the role of flow--the actual movement of water across the landscape--in creation and maintenance of habitats for Everglades plants and animals. Successful restoration of the Everglades landscape requires a thorough understanding of the role of flow (SCT 2003). This document is CIR1452, one of a series of the Wildlife Ecology and Conservation Department, University of Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences. Publication date: December, 2004.

CIR 1452/UW199: The Role of Flow in the Everglades Landscape (ufl.edu)
Improving, Restoring, and Managing Wildlife Habitat in Florida: Sources of Technical Assistance for Rural Landowners
Authors: Main Martin B. , Demers Chris , Hostetler Mark E.
Published: July 2021

This document summarizes sources of information from federal, state, and non-governmental organizations that provide technical assistance to rural landowners interested in managing or restoring habitat for wildlife (Table 1). Additional information regarding conservation and management of wildlife habitat in Florida is available on the University of Florida/IFAS Cooperative Extension Electronic Data Information Source (EDIS). This document is CIR1472, one of a series of the Department of Wildlife Ecology and Conservation, UF/IFAS Extension. Original publication date May 2005. 

CIR1472/UW218: Improving, Restoring, and Managing Wildlife Habitat in Florida: Sources of Technical Assistance for Rural Landowners (ufl.edu)
Producing Your Own Video Program
Authors: Telg Ricky , Beattie Peyton
Published: July 2021

This 4-page publication of the UF/IFAS Department of Agricultural Education and Communication provides an overview of what you should consider as you create your own video program. Minor revision by Ricky Telg and Peyton Beattie.
Producing an Educational Video
Authors: Telg Ricky , Beattie Peyton
Published: July 2021

The information presented in this 4-page fact sheet will assist you in developing an educational video production plan. Published by the UF/IFAS Department of Agricultural Education and Communication. Minor revision by Ricky Telg and Peyton Beattie.
News Media Writing
Authors: Telg Ricky , Lundy Lisa
Published: July 2021

This publication covering an introduction to news media writing is the first of a five-part series on news media writing. This series also covers news writing for print, grammar and punctuation, news writing for television and radio, and interviews for news stories. Minor revision by Ricky Telg and Lisa Lundy. Published by the UF/IFAS Department of Agricultural Education and Communication. 2pp.
Implementasi Layanan Firebase pada Pengembangan Aplikasi Sewa Sarana Olahraga Berbasis Android
Authors: Kurniawan Teguh , Samsudin Samsudin , Triase Triase
Published: July 2021

One of the business sectors that rarely gets digital innovation is the sports business sector, such as the sports field rental business. The problem in this business is that there are still many business actors and their customers who carry out the conventional reservation process, namely by making books manually and this has an impact on the customer experience when conducting leasing transactions, and for business actors it also has an impact on financial recapitulation due to incorrect calculations. The purpose of this research is to develop an Android-based application that is able to provide a much faster and easier sports rental transaction process by integrating with firebase services (firebase authentication, firebase realtime database, firebase cloud messaging). This study uses the method of developing the Rapid Application Development system and in collecting data using qualitative methods, namely observation, interviews, and literature study. From this research, an android-based application has been successfully developed that is able to solve the problem of conventional sports facilities rental and minimize the occurrence of calculation errors in financial recapitulation by integrating it with firebase services.
Pengenalan Wajah Menggunakan PCA dengan Memperhatikan Jumlah Data Latih dan Vektor Eigen
Authors: Kosasih Rifki
Published: July 2021

To find out if an employee is present, attendance is usually used. Attendance can be done in several ways, one of which is by filling in the attendance list that has been provided (manual attendance). However, this method is less effective because there is a possibility that employees who are not present will entrust attendance to employees who are present. Therefore, other ways are needed so that this does not happen. In this study, attendance was carried out using facial recognition. Face recognition is one of the fields used to recognize someone. A person's face usually has special characteristics that are easily recognized by people. These special characteristics are also called features. In this study, these features can be searched using the Principle Component Analysis (PCA) method. The PCA method is one of the methods used to produce features by reducing dimensions using eigenvectors from facial images (eigenface). The facial image used in this study consisted of 40 people with each person having 10 facial images with various expressions. Image data is divided into two parts, namely training data and test data. In this study, it is proposed to pay attention to the amount of training data and the number of eigenvectors used to get the best level of accuracy. From the research results, the highest level of accuracy occurs when the training data for each person is 7 and the test data for each person is 3 with an accuracy rate of 96.67%.
Aplikasi Kehadiran Mahasiswa Menggunakan NFC Card Berbasis Mobile Android
Authors: Jaffar Maulana Anas , Purwantoro Purwantoro , Ridha Azhari Ali
Published: July 2021

Various kinds of activities in the fields of communication, information, transportation, banking, education, and those that require high mobility, require a supporting technology to do so. The supporting technology is a smartphone, where this smartphone is almost owned by every level of society. Smartphones are widely used in education to support learning between lecturers and students. At the University of Singaperbangsa Karawang Faculty of Computer Science, there is one aspect of student assessment that is measured based on the number of students pre-sent. The attendance system that runs at the Singaperbangsa University of Karawang, Faculty of Computer Science, has not yet implemented smartphone technology in its implementation. The problems that arise with the attendance system at this time is the presence data that has no backup if lost and absenteeism records that are easily damaged. Therefore the design and manufacture of the NFC Presence application is carried out to overcome this problem. The NFC Pres-ence application was built using the Mobile Application Development Life Cycle (MADLC) method. NFC (Near Field Communication) on smartphones and NFC Card is a tool to support student attendance data, which will then be stored properly in the database to prevent student attendance data loss. The attendance pro-cess in the NFC Presence application is done by mentoring an NFC card containing data in accordance with the data-base to the lecturer smartphone. Furthermore, the lecturer smartphone will send attendance data to the database, so that this data can be accessed anytime, anywhere.
Perancangan Sistem Informasi Perpustakaan pada Sekolah Eka Wijaya Berbasis Java
Authors: Miranda Mirna , Irfansyah Puput , Sirait Erlando Doni
Published: July 2021

Libraries have books that are references or sources of knowledge that they want to know, sometimes even this information cannot be searched on the internet so that the number of books in the library is very large. With so many books in the library, of course, a system is needed to organize all the books so that these books can be recorded properly so as to reduce the risk of book census errors such as the number of books, borrowers, categories and also the delivery of more detailed information for books. because of that, it takes an information system design for a library. In designing an information system, a concept or research method is needed that can minimize mistakes in the flow of application creation, the method used is Waterfall modeling of this method, an application is made using Java Netbeans with MySQL database. By using this method, the application can run according to the flow, namely the details of the books in the library are in harmony with the actual situation and a decrease in data errors resulting in the loss of some information in the library such as the number of books, the number of borrowings, book details and so on. It makes it easier for users to find the information they want.
The Prototype of the Reading Learning Application uses Animated images on Android with the Black Box Testing Method
Authors: Buntoro Ghulam Asrofi , Astuti Indah Puji , Ariyadi Dwiyono
Published: July 2021

Reading is a basic skill that children must have, because reading all knowledge will quickly enter and be understood by humans. To improve children's reading skills, it is necessary to have learning methods and media that are in accordance with the needs and development of children. Technological developments have made cellphones that were previously only used for calling and sending messages now become smartphones that have more features such as being able to do office work, video calls, games and much more. One of the most widely used smartphones and the most widely used by Indonesians is the Android-based smartphone. The ABACA application is an android-based reading learning application or knowing the alphabet. The application has been tested using the black box method with the results that all menu or application content is functioning properly. The hope of developing this application is that it can attract children's interest, especially preschool or kindergarten children, to get to know the alphabet with the application display in the form of an interesting animated image. The ABACA app is equipped with a game menu to train your child to connect words and spell letters of the alphabet. The test results with the black box method on the ABACA application show that the menu is appropriate and functions properly as expected in the design document.
Rancang Bangun Sistem Informasi Kader Organisasi Forum Pemuda Pelajar Mahasiswa Tangerang (FPPMT)
Authors: Taufiq Rohmat , Iskandar Muhamad A'raf , Ashar Sofia
Published: July 2021

In an organization, of course, it cannot be separated from the term cadre or cadre. The strength of an organization is influenced by the cadres in it. If there are militant cadres who have good competence, it is certain that the organization will not experience many obstacles. Therefore, the role of cadres in the organization has a tremendous impact. This study uses interview and observation methods for the data collection process, while in the process of developing the system using the waterfall method which consists of communication with all the elements involved, planning research activities, making models with a unified modeling language (UML) and the last step is making reports. The conclusion of this research is that a Desktop-based application for the cadre data application for the Tangerang Student Youth Forum (FPPMT) has been made. The application is expected to contribute to the research organization.
Analisa dan Perancangan Aplikasi Cuti atau Ijin Karyawan Menggunakan Aplikasi Berbasis Web
Authors: Dicapriyo Ananta , Andreas Elbino , Firmansyah Firmansyah , Nirmala Endar , Kusyadi Irpan
Published: July 2021

Employees as one element in a company have rights and obligations to the company. One of the rights for employees is leave or permission for a certain time. The obligation of a company is to provide such leave or permission. In the process of applying for leave or employee permits so far, many use conventional processes. Conventional here means still using a form in the form of a sheet of paper leave or permission and must be sent to various parties for approval. This will take a long time and is not in line with the Go Green Program that is being carried out by many companies. Reduce, Re-use, Recycle and Replace are the four concepts of the Go Green program. Replacing the application for leave or permission that has been using a form (paper) by using a web-based application program is a step forward by the company to implement the Go Green concept. Web-based application programs in addition to reducing paper usage also do not require large physical data storage areas. This can be realized by making a web-based leave application which is certainly easier in terms of access to all employees. Meanwhile, data storage can be stored in cloud storage media. In this study, an application design will be made using UML (Unified Modeling Language) to be used as a reference during development. UML provides many diagrams, but in this study only a few diagrams were used. The results of the study indicate that application design using UML can facilitate communication between stakeholders, can make it easier for programmers to translate into programming languages. Using UML can reduce application creation errors and speed up completion.
Whatsapp Group: Media Komunikasi Orang Tua Dan Guru
Authors: Yana Fitri , Inayatillah Inayatillah , Agustina Maya
Published: July 2021

With the development of technology and the emergence of various communication platforms, interaction can become easier. Especially in the online learning period, almost 90% of educational and non-educational interactions are carried out through WhatsApp Groups. The purpose of this paper is to find out directly the use of WhatsApp Groups in building communication between parents and teachers and to find out the obstacles faced by parents and teachers in using WhatsApp Groups at SD IT Teuku Umar. This type of research is field research (field research). Data collection techniques used are interviews and documentation. The data analysis technique used is descriptive analysis. The results showed that the use of WhatsApp Group was used as a means to support student learning activities outside of school hours. So that it will make children enthusiastic about learning when they are at home. The obstacles faced by parents and teachers in the use of WhatsApp Groups are in the technical part, namely the package quota runs out and internet network disturbances, the ethics of using groups in the WhatsApp Group application, the lack of response from students' parents due to their busy lives and there are still parents who do not understand the information. given from the teacher to the parents of students
Chemical constituents and theira-glucosidase inhibitory activity of the stem of Salacia chinensis L.
Authors: Le Huu Tho , Duong Truc Thanh Thi , Dang Phu Hoang , Do Truong Nhat Van , Nguyen Hai Xuan , Nguyen Mai Thanh Thi , Nguyen Nhan Trung
Published: July 2021

Salacia chinensis L., known as “Chop mao” in Vietnam, is a climbing shrub that belongs to the Celastraceae family. The stem of S. chinensis L. is used as a traditional medicine for the treatment of diabetes, rheumatoid arthritis, back pain, … The dried powdered stem of S. chinensis L. was collected in Phu Yen province and was extracted with methanol to yield methanol extract. The methanol extract was suspended in H2O and partitioned successively with n-hexane, CHCl3, EtOAc to obtain n-hexane, CHCl3, EtOAc, and H2O fractions, respectively. The CHCl3 fraction was subjected to a series of chromatographic separation to afford four purified compounds including 3-oxolup-20(29)-en-30-al (1), betulin-3-caffeate (2), 2-(4-hydroxy-3,5-dimethoxylphenyl)ethanol (3), and acetosyringone (4). Their structures were elucidated on the basis of the spectroscopic analysis and comparison with literature data. The isolated compounds were tested for their α-glucosidase inhibitory activity. The result indicated that all compounds (1-4) possessed significant α-glucosidase at the testing concentration of 100 µM with the percent inhibition values of 9.5 ± 1.3, 70.89 ± 0.25, 44.2 ± 1.6, and 6.7 ± 1.7 %, respectively. In addition, betulin-3-caffeate (2) and 2-(4-hydroxy-3,5-dimethoxylphenyl)ethanol (3) show more potent α-glucosidase inhibitory activity, with IC50 values of 69.7 and 152.0 µM, respectively, than that of positive control acarbose (IC50 = 214.5 µM).
A Study Demographic, Histopathological Patterns and Clinical Profile of Oral Squamous Cell Carcinoma in East Java, Indonesia: A Hospital-Based Study
Authors: Parama Kania Difa , Nina Irawati  , Sunarto Reksoprawiro  , Sahudi
Published: July 2021

Background. Cancer remains a health problem in the world. Estimated 12,7 million new case and 7,6 deaths cause of cancer each year. Oral carcinoma is one of head and neck carcinoma. Oral carcinoma is 6th the most cancer in the world and 90% of the cases are squamous cell carcinoma. The purpose of this research is to study the clinic-epidemiological profile among Indonesian patients associated with oral cancer cases managed in Head and Neck Surgery Unit of Dr Soetomo General Hospital between January 2013- December 2016.Methods. Records of 116 cases were reviewed for clinical details, histopathological data, and follow-up status. Study variables included demographic factor, modifiable risk factors such as tobacco usage and alcohol consumption, site involved, staging, histopathological result, and treatment modalities. Data was presented in form of percentages and proportions.Results. Out of the total 116 cases, majority of the subjects were above 40 years old. Twenty-two (22%) of subjects were young adult (below 40 years old). Seventy-seven subjects (77 %) were male. It was observed that 16 cases (21%) of male subjects was a smoker before they had disease. No female subject consumed tobacco in all form or drinking alcohol. The most common site involved was tongue, followed by lower ginggivo-buccal complex. Histopathologically, 110 cases (95%) was well-differentiated squamous cell carcinoma. Most of the cases (88.8 %) were in advanced stage (stage III or IV) and were treated with surgery followed by adjuvant therapy.Conclusions. The most common site for oral cancer was tongue and majority of the cases were well-differentiated squamous cancer presented in advanced stage of disease. We observed that alcohol consumption and smoking did not have any role in causing oral cancer in women, therefore further study needed to evaluate other possible factors such as diet pattern and oral hygiene. Cigarette smoking might be the cause of oral cancer in male patients.
Közgazdasági tehetséggondozás a Ludovikán
Authors: Kutasi Gábor
Published: July 2021

Az Európai Tükör jelenlegi száma ráépül arra a doktori konferenciára, amelyet a Nemzeti Közszolgálati Egyetem Gazdaság és Versenyképesség Kutatóintézete (GVKI) rendezett 2020-ban. Erre a konferenciára meghívást kapott az ország összes közgazdaságtudományi és gazdálkodástudományi doktorandusza, sőt egy cseh doktori iskola is képviseltette magát. A hazai doktori  programok jelentős mértékű nemzetköziesedésének köszönhetően legalább annyi külföldi illetőségű hazai doktorandusz adott elő,  mint amennyi magyar a 33 előadásból. Hogy minél inkább bevonhatók legyenek a doktoranduszok, a rendezvény kétnyelvű volt. A  GVKI által szervezett „RICE PhD Seminar” nevű rendezvény egy olyan konferenciasorozat kíván lenni, amely a hazai közgazdasági doktori képzés seregszemléjévé válhat. A GVKI a küldetése részének tekinti a közgazdasági tehetséggondozást és az ifjú kutatótehetségek felfedezését. A konferencia a nyilvánosság és a publikáció lehetősége mellett támogatni is igyekezett a PhD- hallgatókat azzal, hogy mind a konferenciaelőadás során, mind a tanulmányok két anonim bírálója által ne csupán kritizálva, hanem  mentorálva legyenek. A 2020-as pandémia különböző nehézségek elé állította a szervezést, amely a gyorsan változó korlátozások  környezetében végül szinte aznap vált párhuzamosan online és helyszíni konferenciává annak minden technikai buktatójával. A  konferenciasorozat 2020-as állomása „A 2020-as évek gazdasági kihívásai” téma égisze alatt toborzott előadókat. E rendezvénybe ad  betekintést az előadók egy része által beküldött tanulmánycsokor. A kétnyelvűség a tanulmányok körére is jellemző, amelyek  változatos módszertannal és mélységben vizsgálják a legtöbb esetben a doktori tézisekhez kapcsolódó kérdéseket. Ennek  következtében a termékfejlesztéstől a piacgazdasági modelleken keresztül az autóipari beruházásokig, a demográfia gazdasági  aspektusától az államépítésen keresztül a szegénység gazdasági vetületéig, a gazdaságpolitikától az iparági klasztereken keresztül a  fenntarthatóságig széles spektrumú kitekintést kapunk egyrészt a 2020-ban doktori kutatásokra, másrészt a világgazdaság és a  közgazdaság előtt álló kihívások komplexitására. Egyszerre sikerült megmozgatni a szerzőket számos olyan gazdasági területről, mint  a makrogazdaság, a vállalatgazdaság, a nemzetközi kapcsolatok és a politikai gazdaságtan. Örömteli és példamutató, hogy feltűntek  szerzőpárosok, sőt szerzőcsoportok akár több közös tanulmánnyal is, amelyek azt mutatják, hogy már a doktori képzés szintjén is  képesek önszerveződni a kutatócsoportok. A tehetséggondozás 2021-ben folytatódik.
Food design és digitalizáció
Authors: Merkl Márta
Published: July 2021

A vonatkoztatási rendszer, amelybe a vállalás – egy food design elméleti áttekintés és projektbemutatás – be kíván  illeszkedni, a negyedik ipari forradalom, illetve az Ipar 4.0. A cikk röviden bemutatja az Ipar 4.0 fogalmát és főbb  kérdéseit. Majd válogatott food design projekteket vizsgál  egyrészt a különböző direkt (Francesca Zampollo) vagy  indirekt (Victoria and Albert Museum) klasszifikációs  k kísérletek szerint, másrészről társadalmi és gazdasági  relevanciájú megközelítésekből (élmény, kritikai jelleg,  fenntarthatóság). Az elméleti, spekulatív jellegű kutatás új  szempontrendszert kínál a digitális forradalom, az  élelmiszeripar és a food design számára.
A tőkeminimum hatása a magyar hitelkamatokra
Authors: Füzesi Krisztina
Published: July 2021

A kutatás célja a hitelkamatok szintjének vizsgálata a minimumtőkeszint függvényében. A vizsgálat úgynevezett „mapping” módszer alkalmazásával a bankszektorra  felépített aggregált adatok segítségével állapítja meg a hitelkamat növekedését 1%-os tőkemegfelelési mutató-emelkedés mellett. A modell alapfeltevése, hogy a banki jövedelmezőség állandó marad, a bank üzleti stratégiája és  portfoliókockázata nem változik. Az üzemméret szerinti  különbségek azonosítása érdekében az elemzésben a  Magyarországon működő kereskedelmi bankok méret  szerinti csoportosításban szerepelnek. Az eredmények  alapján a tőkemegfelelési mutató 1%-os emelése a  nagybankok esetében mutatja a legmagasabb, 18 bázispontos növekedést a hitelek kamatszintjében. Ez  alapján a hitelkamat emelkedése nem jelentős mértékű, és  összhangban van a korábbi empirikus kutatások  eredményével. Az elemzés hozzájárul a tőkeszabályozás és  a banki jövedelmezőség közötti kapcsolat felméréséhez, és  segíti a hitelkamat-növekedés előrejelzését a változó tőke-  és kamatszint mellett.
Assessment of Health Impacts of PM2.5 by AirQ+ Software in the City of Sanandaj, Iran (2018-2019)
Authors:   Social Determinants of Health Research Center (SDHRC), Department of Environmental Health Engineering, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran., Asgari Ghorban , Khoshniyat Ramin ,   Students Research Center, Department of Environmental Health Engineering, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran., Karimi Farhad ,   Department of Environmental Health Engineering, School of Vice Chancellor for Health Affairs, Kurdistan University of Medical Sciences, Sanandaj, Iran., Ebrahimi Kamal ,   Department of Environmental Health Engineering, School of Vice Chancellor for Health Affairs, Kurdistan University of Medical Sciences, Sanandaj, Iran., Habibzadeh Kazhal ,   Department of Air Pollution Control of Kurdistan, Environmental Protection Agency, Sanandaj, Iran., Rahimnejad Samira ,   Department of Occupational Health Engineering, Faculty of Health, Kurdistan University of Medical Sciences, Sanandaj, Iran.
Published: July 2021

Background: Particulate or particle mattes in term of air pollution are particles with a diameter of 2.5 μm or less (PM2.5). PM2.5 is a natural source of air pollution and has harmful effects on citizens in Sanandaj City, located in the west of Iran. Methods: In this study, the hourly data of concentration of PM2.5 were taken from the Kurdistan Environmental Protection Agency. During the study period (2018-2019), the 24-hour concentration of PM2.5 exceeded 339 times the average level. By AirQ+ software, the relationship between data and Relative Risk (RR), Baseline Incidence (BI), and Attributable Proportion (AP) were estimated. Then chronic obstructive pulmonary disease, lung cancer, ischemic heart disease, and brain stroke in the range of over 30 years were estimated. Results: The main target of this study was to survey the relationship between PM2.5 concentration and the death rate of citizens of this non-industrial city. The long-term health effect (more than 6 months) of PM2.5 caused 326 deaths on average (except for accidents and poisoning). Conclusion: Increase the concentration of PM2.5 is one factor that affects a high percentage of mortality rate.
Chemical Fractionation of Copper and Zinc After Addition of Conocarpous Waste Biochar to A Drill Cutting
Authors:   Department of Environment, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran., Lajmiri Orak Zohre , Sabzalipour Sima ,   Department of Environment, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran., Panahpour Ebrahim ,   Department of Soil Science, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran., Attar Roshan Sina ,   Department of Environment, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran., Tavakkoli Haman ,   Department of Chemistry, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran.
Published: July 2021

Background: Drill Cutting (DC) are large amount of waste generated in gas and oil exploration and production activities that contains toxic substances, especially heavy metals. This study aimed to use Conocarpus Waste (CW) biochar to investigate its effects on changes in chemical forms and stabilization and distribution of Cu and Zn in DC samples of Ahvaz oil field at different incubation times. Methods: In order to study the effects of CW biochar at different rates (0, 2, 5, and 10% w/w) and four incubation times (1, 2, 4, and 8 weeks) for adsorption and chemical fractionation of Copper (Cu) and Zinc (Zn) in DC of Ahvaz oil field in southwestern Iran. An experiment was conducted as a factorial in a completely randomized designing in three replication. Sequential extraction procedure of Tessier was applied for the determination of heavy metals fraction. Results: Application of biochar significantly (p <0.05) increased the pH, soil organic carbon (SOC), electrical conductivity (EC), and cation exchange capacity (CEC) especially at the 10% application rate. After the addition of CW biochar, the exchangeable (EX) and carbonate (CAR) fractions of Cu and Zn, respectively decreased (P≤0.05) significantly while organic matter (OM) bound, oxides (OX) bound, and residual (RES) fraction were increased. Conclusion: The CW biochar can be a low-cost and effective amendment in immobilizing the Cu and Zn, and also effectively to reducing their mobility in DC.
Учет влияния перекоса в зазоре между плунжером и втулкой на величину утечек в авиационном аксиально-плунжерном насосе
Authors: Доценко Владимир Николаевич , Лихошерст Иван Григорьевич
Published: July 2021

The subject of study in the article is the amount of leaks of the working fluid in the gap between the plunger and the bushing of an aircraft axial-plunger pump, depending on the position of the plunger relative to the bushing. The level of fluid leaks in the gap between the plunger and the cylinder block bushing is a component of volumetric losses, affects the thermal state, wear, the state of the plunger-bushing pair, as well as the level of pressure pulsations of the working fluid and, ultimately, the change in the efficiency of the axial-plunger pump. Researches deal with the influence of piston defects in a bushing on losses through a gap between them that is not discovered in existent literature. The aim of this work is theoretical research of the influence of piston defect on the leakage of working liquid through a gap between the piston and cylindrical bushing in aviation axial-piston pump under workloads. The tasks are: it is necessary to define the losses quantity for the three cases: the axes of piston and bushing coincide; piston is displaced (axes are parallel) with a maximal eccentricity ε = 0.99; piston is twisted in a bushing so that the edges of piston touch a bushing. For the problem-solving methods as follows were used. The task of thin film laminar flow in a gap between piston and bushing was solved by a numeral method in finite-element software. Losses on a piston are considered as a sum of the losses, related to the motion of the piston at a speed W and losses due to the pressure gradient dp/dz. The results are: to obtain the laws of geometrical parameters influence on the losses amount investigation for one piston was undertaken in the first part of the study. It is marked that most losses take place for piston displaced in parallel, and the least - for twisted. Total losses for the real pump on different operational behaviors are considered and volume loss-of-flows are obtained in the second part of the article. Conclusions. Dependences of losses through a gap at the different gap sizes and relative length of bushing for twisted piston are first time obtained. The results allow estimating the losses quantity in a pump on the efficiency of his work at planning and exploitation.
Виготовлення тракту охолодження вдосконаленої конструкції для камери згоряння рідинного ракетного двигуна за допомогою адитивних технологій
Authors: Аджамський Сергій Вікторович , Кононенко Ганна Андріївна , Подольський Ростислав Вячеславович
Published: July 2021

The creation of complex structural elements of aircraft using additive technologies is promising and is widely used since such elements have many design and technological advantages over the collection of individual finished parts. However, it requires the solution of many scientific and technical problems to obtain products of high accuracy and density, develop a technological process, work out modes, and sometimes develop a new design of products. When the angles of inclination of the inclined surfaces are more than 45 °, in the manufacture of parts using the technology of selective laser melting, special conditions arise that cause some restrictions. Since the tracks that form the bottom layer (down-skin) of the inclined surface largely lie not on the previous layer of the metal part, but on the powder surrounding the part, the melt pool "falls through" into the powder, the melt pool breaks through, disrupting the track continuity. As a consequence, the bottom layer (down-skin) of the formed inclined at an angle of more than 45 °, and the horizontal surface has a high roughness. We studied samples of elements of the cooling path with an improved design (the shape of the channels in the form of parallelograms with an acute angle of 45 °) and with the original design (the shape of the channels in the form of rectangles) with a change in the angle of inclination of the channels relative to the Z-axis. According to the results of visual-optical analysis and determination of the down-skin roughness, it was found that at tilt angles to the Z-axis ≥75 ° with the original design of the channels, the transverse surface of the channel may not even form or have significant deviations from the specified geometry, and with the improved design of the channels, the roughness of the down-skin is only slightly increased. From the analysis of the change in roughness at tilt angles of the channels relative to the Z-axis in the range of 40…60 °, it was found that samples with an improved channel design have similar roughness values (5…6.5 μm), and for samples with an original channel design, the roughness changed significantly (6…22 μm). A model was developed and a combustion chamber cooling path was manufactured with channels of an improved design and an angle of inclination of the channels of 74 °. The possibility of manufacturing a combustion chamber cooling duct with an angle of inclination of the channels relative to the Z-axis using the technology of selective laser melting at a high metal density and low surface roughness of the inner channels is shown.
Вплив механічної обробки поверхні на діелектричні та фотодіелектричні властивості кристалів AIIBVI
Authors: Чугай Олег Миколайович , Абашин Сергій Леонідович , Олійник Сергій Володимирович , Луньов Ігор Валентинович
Published: July 2021

The subject matter of the study is the dielectric and photodielectric properties of AIIBVI crystals of composition ZnSe and Cd1-хZnхTe, which are grown from the melt, and the structural defects and internal elastic fields associated with these properties. The goal of the article is to study the patterns of influence of surface machining by grinding, polishing, and local loading on the defective structure in the deformation region, and thus on the dielectric and photodielectric properties of AIIBVI crystals of this composition, which is important given the use of these crystals in aerospace engineering. The tasks to be solved are: to investigate the regularities of the influence of grinding, polishing, and local deformation of the chipped surface of ZnSe and Cd1-хZnхTe samples on their defective structure, dielectric and photodielectric properties, including irreversible changes in properties. The problems were solved by the following methods: dielectric and photodielectric properties of crystals were investigated by the capacitive method; scanning photodielectric spectroscopy was used to measure the photoionization energies of localized states of charge carriers in crystals; the distribution of residual elastic stresses in the samples was studied by the polarization-optical method. The following results were obtained. Grinding and polishing cause the transformation of own and impurity maxima of the spectral dependences of the dielectric parameters of AIIBVI crystals, has a characteristic effect on the coordinate dependences of the dielectric parameters of crystals Cd1-хZnхTe. This is due to the transformation of localized states of carriers, which is confirmed by the study of ZnSe crystals. Concentrated deformation of Cd1-хZnхTe crystals significantly affects their dielectric properties, in particular, causes relaxation of dielectric parameters. Conclusions. Mechanical surface treatment of AIIBVI crystals by grinding and polishing, as well as local mechanical loading of Cd1-хZnхTe samples significantly affect their dielectric and photodielectric properties, which is associated with the formation of a system of defects and internal elastic fields in the deformation regions. An explanation of the observed effects is given.
Контроль якості хромонікелевих сталей за парамагнітним станом аустеніту
Authors: Сніжной Геннадій Валентинович , Сніжной Валентин Лук'янович
Published: July 2021

The subject matter of the article is the processes of monitoring and assessing the quality of austenitic chromium-nickel steels. The quality of steels and products made from them depends on the combination of physical, chemical and technological properties that are formed as a result of the phase-chemical composition and various types of processing (temperature, deformation, laser, radiation, etc.). Determination of a methodology that will supplement or replace multiple tests by measuring one parameter is highly relevant.  The goal is to find a methodology for a comprehensive assessment of mechanical and corrosion properties in one parameter, which is sensitive to external factors. It is proposed to use the specific paramagnetic susceptibility of austenite c0 as an integral characteristic of the influence of various factors (chemical composition, melting conditions, deformation, temperature, etc.). Parameter c0 is a characteristic of the atomic-magnetic state of austenite and a sensitive quantity to the influence of external factors. The tasks to be solved are: to formalize the correlation between the specific paramagnetic susceptibility c0 of austenite and mechanical, corrosion properties (tensile strength sв, conditional yield stress s0.2, elongation d, corrosion rate K). The methods used are: a highly sensitive magnetometric method for determining the specific magnetic susceptibility X and the low content of the ferromagnetic phase of the samples of the studied steels in the initial state (before mechanical and corrosion tests). Mechanical indicators were determined in accordance with GOST 1497-84, the value of corrosion losses in chloride-containing solutions - in accordance with GOST 9.912-89.  The following results were obtained. It has been experimentally established that the tendency of changes in the mechanical and corrosion properties of steels of the AISI 321 and AISI 304 types correlates with the magnetic nature of the paramagnetic austenite matrix, which is determined by the sum of the magnetic moments of atoms per unit mass (specific magnetization). Conclusions. It is shown that the specific paramagnetic susceptibility of austenite can be used to determine the behavior (increase or decrease in mechanical and corrosion properties). It is shown that a low content of d-ferrite can also be a measure (indicator) of the behavior of these properties.
Review of Research on Wind-sand Hazards in China Railway
Authors: Xue Chunxiao , Li Kaichong , Kong Lingwei
Published: July 2021

China is the country with the longest mileage in the construction of sandstorms in the world. The railway system is often affected by wind sand flow, which seriously affects the operation safety of trains. Firstly, this article introduces the formation mechanism, movement state, monitoring method and structural characteristics of the wind-sand flow. Then the sand hazard formation mechanism of railway embankments, cuts, bridges and culverts is explained based on aerodynamic performance. Moreover, the sand prevention measures are classified, and the advantages and disadvantages of various measures are discussed. Finally, two kinds of sand prevention and control systems are proposed in combination with the topography and regional wind-sand flow characteristics, and the problems that need to be solved urgently in the prevention and treatment of railway sand and sand disasters in the future are prospected.