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Search Results: 1 - 10 of 117848 matches for " T Ekrakene "
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Laboratory evaluation of four medicinal plants as protectants against the maize weevil, Sitophilus zeamais (Mots)
ST Arannilewa, T Ekrakene, JO Akinneye
African Journal of Biotechnology , 2006,
Abstract: The petroleum ether extract of four medicinal plants; Aristolochia ringens (Vahl), Allium sativum (L), Ficus exasperata (L) and Garcinia kola (H), were evaluated as grain protectant against the maize weevil, Sitophilus zeamais (Mots) in the laboratory at 0.5, 1.0 and 1.5% (w/v) concentrations. Parameters assessed were adult mortality, rate of adult emergence, grain damage effect and weevil peforation index (WPI). There was increase in adult mortality with days of exposure in all concentrations. Ar. ringens followed by Al. sativum were most potent both in adult mortality and adult emergence. This study reveals Ar. ringens to be a potent bioinsecticide for protecting maize grains from S. zeamais infestation and damage. The details of the bioassay procedure used and the results obtained are reported.
Comparative Assessment of Insecticidal Effect of Azadirachta indica, Hyptis suaveolens and Ocimum gratissimum on Sitophilus zeamais and Callosobruchus maculatus
B.N. Iloba,T. Ekrakene
Journal of Biological Sciences , 2006,
Abstract: The powders of the leaves of Hyptis suaveolens, Azadirachta indica and Ocimum gratissimum were evaluated for comparative effectiveness in controlling Sitophilus zeamais Mots infesting stored maize grain (Zea mays) and Callosobruchus maculatus Fab infesting stored cowpea seeds (Vigna unguiculata). The powders were tested at 1.5, 2.5 and 3.5/80 g of the respective food materials. The parameters compared were adult mortality rate and emergence. The three plants tested showed more adult mortality and adult emergence of C. maculatus, where percentage adult mortality ranged from 83.3 to 93.4% for A. indica; 86.7 to 90.0% for O. gratissimum; 93.4 to 96.6% for H. suaveolens while S. zeamais recorded 13.3 to 50% for A. indica; 26.7 to 50% for O. gratissimum and 13.3 to 30% for H. suaveolens with the powders. The controls showed 0 to 33.4% mortality for C. maculatus compared with 0 to 3.3% obtained in S. zeamais within the same period. After 42 days post treatment adult emergence indicated that more C. maculatus ranging from mean number of 13 to 68 emerged while S. zeamais recorded 11 to 37 within the same period of consideration. The statistical analysis indicated that where significant differences occurred, it was caused by plant type other than concentration. The performance of individual plant type revealed that O. gratissimum and A. indica were better against S. zeamais than H. suaveolens where they caused mortality ranging from 13.3 to 50% with H. suaveolens recording 13.3 to 30.0%. However, the mortality ability of H. suaveolens against C. maculatus was better with a mean percentage mortality range of 93.3 to 96.6% compared with 83.3 to 90.0% caused by O. gratissimum and A. indica. The general emergence trend also indicated that H. suaveolens performed better in reducing emergence of new adults. These suggest that botanical insecticides are promising and their effectiveness varies with species.
REGULARYFRAMWORK AND LEGAL BASE OF ELECTRONIC DOCUMENT CIRCULATION НОРМАТИВНО-ПРАВОВА БАЗА ЕЛЕКТРОННОГО ДОКУМЕНТООБ ГУ
T.Г. Омельченко,Н.А. Джанджгава
Information Technologies and Learning Tools , 2010,
Abstract: The general characteristic of legal base of electronic document circulation is presented in the article. It legislatively regulates the relations which connected with the information and information communication technologies. There is presented the list of the basic acts of regulation of sphere of information relations. У робот подано загальну характеристику нормативно-правово бази, яка законодавчо регулю в дносини, пов'язан з нформац ю, нформац йно-комун кац йними технолог ями, представлено перел к основних законодавчих акт в регулювання сфери нформац йних в дносин.
THE APPROACH OF COMPETENCE AT THE STUDY OF MATHEMATICAL INFORMATICS IN A PEDAGOGICAL UNIVERSITY КОМПЕТЕНТН СНИЙ П ДХ Д ПРИ ВИВЧЕНН МАТЕМАТИЧНО НФОРМАТИКИ” У ПЕДАГОГ ЧНОМУ УН ВЕРСИТЕТ
T.П. Кобильник
Information Technologies and Learning Tools , 2010,
Abstract: In the paper the approach of competence at the study of mathematical informatics in a pedagogical university is considered. The special attention is paid to forming of professional pedagogical and educational-cognitive competences. The example of tasks on which formed a competence at the study of mathematical informatics is resulted. У статт розглянуто компетентн сний п дх д при вивченн математично нформатики у педагог чному ун верситет . Особливу увагу звернено на формування профес йно педагог чно та навчально-п знавальну компетентност . Наведено приклад завдань, як сприяють формуванню компетентностей при вивченн математично нформатики.
SYSTEM OF THE AUTOMATIC DOCUMENT PROCESSING IN SHELL OF BASE SOFTWARE СИСТЕМА АВТОМАТИЗОВАНОГО ДОКУМЕНТООБ ГУ В ОБОЛОНЦ БАЗОВОГО ПРОГРАМНОГО ЗАБЕЗПЕЧЕННЯ
В.Ю. Биков,T.О. Дерба
Information Technologies and Learning Tools , 2010,
Abstract: In the article the automatic system of the document processing, created with use of Microsoft Access – a component part of Microsoft Office is offered. This system can be used at school and Institutions of education with one computer or with system of 15 ones connecting in the local net. У статт запропоновано для ознайомлення автоматизовану систему документооб гу, створену з використанням Microsoft Access – складово частини Microsoft Office. Ця система може використовуватися в школах установах осв тньо галуз на одному комп’ютер чи на систем до 15 комп’ютер в, пов’язаних локальною мережею.
MODERN APPROACHES AND PRINCIPLES OF PORTAL BUILDING ТЕХНОЛОГ ЧН ОСНОВИ СТВОРЕННЯ ТА П ДТРИМКИ ПОРТАЛ В
Н.Т. Задорожна,T.Г. Омельченко
Information Technologies and Learning Tools , 2010,
Abstract: The paper presents the analysis of modern state of development and use of Internet portals, the peculiarities of approaches to creation and introduction of portals in educational system are described. В робот анал зуються принципи розробки та використання нтернет-портал в, описуються особливост п дход в до створення та впровадження портал в у систему осв ти.
REVIEW OF MODERN TOOLS OF INFORMATION AND COMMUNICATION TECHNOLOGIES IN THE MANAGEMENT OF SECONDARY EDUCATION ОГЛЯД СУЧАСНИХ ЗАСОБ В НФОРМАЦ ЙНО-КОМУН КАЦ ЙНИХ ТЕХНОЛОГ Й В УПРАВЛ НН СЕРЕДНЬОЮ ОСВ ТОЮ
T.О. Дерба
Information Technologies and Learning Tools , 2010,
Abstract: There are presented the up-to-date situation with information and communication technology use in the management of secondary education; information and communication technologies (ICT), that practically used in educational establishments are considered. There are some examples of educational institutions using IСT for the automation of management. У статт показаний зр з сучасного стану використання нформац йно-комун кац йних технолог й в управл нн середньою осв тою, розглянут нформац йно-комун кац йн технолог ( КТ), як на практиц використовуються в загальноосв тн х закладах, наведен в дгуки навчальних заклад в, як використовують КТ для автоматизац управл ння
EVALUATION OF INTEGRALS OF FUNCTIONS OF COMPLEX VARIABLE BY USING THE RESIDUES IN COMPUTER MATHEMATICS SYSTEMS ОБЧИСЛЕННЯ НТЕГРАЛ В В Д ФУНКЦ Й КОМПЛЕКСНО ЗМ ННО ЗА ДОПОМОГОЮ ЗАЛИШК В В СИСТЕМАХ КОМП’ЮТЕРНО МАТЕМАТИКИ
Н.Д. Парфьонова,T.В. Клочко
Information Technologies and Learning Tools , 2010,
Abstract: The article describes the methodology of teaching one of the major topics of the course of complex analysis using the system Maple. It also demonstrates how the use of computer mathematics systems facilitates the evaluation of students by the teacher during organization of independent work. В статт наведено методику викладання мабуть одн з найважлив ших тем курсу комплексного анал зу з використанням системи Maple; демонстру ться, як використання систем комп’ютерно математики полегшу викладачев оц нювання роботи студент в та при орган зац х самост йно роботи.
USE OF VEB 2.0 SOCIAL SERVICES FOR PLANNING OF INFORMATIVE SYSTEMS ВИКОРИСТАННЯ СОЦ АЛЬНИХ СЕРВ С В ВЕБ 2.0 ДЛЯ ПРОЕКТУВАННЯ НФОРМАЦ ЙНИХ СИСТЕМ
T.Г. Омельченко
Information Technologies and Learning Tools , 2010,
Abstract: In the article the definitions and the characteristic of Web 2.0 social networks and services are presented as well as tendencies of their development, approaches of use of Web 2.0 social services and technologies in information systems are considered and analyzed. Requirements to technological maintenance of information system “Planning of scientific researches in NPA of Ukraine” are analyzed. В робот представлен визначення характеристика соц альних мереж послуг Веб 2.0 та тенденц хнього розвитку, розглянуто проанал зовано напрямки використання соц альних послуг та технолог й Веб 2.0 в нформац йних системах. Проанал зовано вимоги до технолог чного забезпечення нформац йно системи “Планування наукових досл джень в АПН Укра ни”.
In memoriam: Люба Огненова-Маринова (1922–2012)
Tотко Стоянов
Bulgarian e-Journal of Archaeology , 2012,
Abstract: In memoriam: Luba Ognenova-Marinova (1922–2012)Totko Stoyanov
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