scholarly journals SCREENING THE ABILITY TO CONTROL MESOMORPHUS VILLIGER (BLACK BEAN BEETLE) OF SIX METARHIZIUM ANISOPLIAE STRAINS ISOLATED IN BINH DUONG, VIET NAM

2021 ◽  
Vol 9 (12) ◽  
pp. 447-452
Author(s):  
Manh Tran ◽  
◽  
Dung Nguyen ◽  

Three types of bio-preparations of six different Metarhizium anisopliae strains (Ma-SD, Ma-SAT, Ma-ST, Ma-RS, Ma-RN, and Ma-RM) isolated from soil in Binh Dương province, Viet Nam, including conidia, LIMs and MIXs, were evaluated the acaricidal effects on Mesomorphus villager (Black bean beetle). The results of conidia studies showed the high efficacies of Ma-SAT and Ma-ST at 98.64 ± 1.25 percent and 95.23 ± 3.15 percent, in turn. The times to kill half of the studied beetles were observed from the 9th day to the 12th day of the 15-day study process seemed indifferent and late, also without signs of mycosis at the end of the studies. LIMs had low efficacies in the studies, though the LIM of Ma-SAT continued to perform the efficacy at 57.14 ± 3.45 percent among the studied groups after the 15-day study process, moreover, its LIM was the only one killing half of the beetles on day 13th of the study process. The efficacies of MIXs were all higher than 91 percent, among them, Ma-ST, Ma-SAT, and Ma-RS showed their outstanding performance at 96.94 ± 2.49, 98.08 ± 1.21, 98.18 ± 1.38, respectively. Interestingly, all strains were observed to kill half of the studied beetles on day 5th of study time, the soonest one was recorded from the Ma-SAT experiment on day 3rd.

2017 ◽  
Vol 12 (1-2) ◽  
pp. 59
Author(s):  
Lukas Huisman ◽  
Bruno Gingras ◽  
Geert Dhondt ◽  
Marc Leman

Scores of complex, 20th century, solo piano pieces can be difficult to perform and may even include elements that are physically impossible to play. This article investigates the role of music notation in the Opus Clavicembalisticum of Sorabji, which is a rather extreme case in terms of virtuosity and length. To analyze the effect of score notation on learning and performing, 9 pianists were asked to practice music fragments in 3 different score editions, namely the original Urtext edition (a 4-staff score), performance edition (same notes but organized according to an "embodied" performance viewpoint), and study edition (further simplified and with added analytical reading aids). The hypothesis was that the "embodied notation" would have an effect on study time (shorter study time) and errors (fewer errors). Objective features of the study process and performance, such as study time, error ratio and markings on the score (fingerings, hand distribution, synchronization) were compared. Subjective remarks the performers made about the scores were also analyzed. Findings indicate a significant positive influence of the score type on the study time. These results suggest that players draw on ideomotor principles, which include processes based on learned and "embodied" associations between perceived images of the scores and the motor activity that is directly associated with it.


2021 ◽  
Vol 2 (2) ◽  
pp. 158-182
Author(s):  
Laily Syafa'ah ◽  
Taufiqur Rohman

Abstrak Penelitian ini bertujuan untuk mendeskripsikan keterlaksanaan Lesson Study sebagai daya dukung kompetensi pedagogik guru MI Ma’arif Kumpulrejo 02 Salatiga, serta kemampuan mengintegrasikan Kurikulum 2013 dalam pelatihan program Lesson Study. Penelitian ini merupakan penelitian tindakan dengan pendekatan deskriptif kualitatif dengan subjek penelitian yaitu kepala sekolah dan dewan guru serta pengawas MI Kota Salatiga dengan jumlah 1 kepala sekolah ,3 dewan guru dan 2 peserta didik serta pengawas MI Kota Salatiga. Pelaksanaan Lesson Study ditekankan pada 3 tahap yaitu plan (merencanakan atau merancang), Do (melaksanakan), dan See (mengamati, dan sesudah itu merefleksikan hasil pengamatan). Pelaksanaan Lesson Study di MI Ma’arif Kumpulrejo 02 masih perlu pendampingan lebih lanjut dalam pembuatan RPP sesuai kurikulum 2013 dengan mengingat urgensi pendidikan karakter yang terintegrasi dalam mata pelajaran. Lesson Study harus dikembangkan dengan melibatkan guru-guru, serta pakar dan praktisi pendidikan dari instansi lain untuk menambah khazanah wawasan metode dan strategi pembelajaran yang lebih kompleks.Lesson Study juga membantu guru menerima tunjangan kesejahteraan, karena program Lesson Study mampu membentuk kompetensi guru yang unggul. Program Lesson Study salah satu wadah bagi guru dalam menjawab perkembangan zaman yang semakin kompleks, Lesson study mampu menjadi daya dukung bagi guru dalam memperjuangkan kesehteraannya serta membantu guru dalam menjawab tantangan zaman dan sebagai daya dukung terhadap kompetensi lulusan serta kualitas lembaga pendidikan. Kendala yang terjadi dalam proses Lesson Study di MI Ma’arif Kumpulrejo 02 Salatiga adalah sebagai berikut: Kurangnya motivasi guru dalam mengembangkan program Lesson Study, Kurangnya Pendanaan program Lesson Study di MI Ma’arif Kumpulrejo 02, Sarana dan Prasarana di MI Ma’arif Kumpulrejo 02 Kurang lengkap, Sulitnya Penyusunan jadwal pelaksanaan program Lesson Study di MI Ma’arif Kumpulrejo 02, Pendokumentasian kegiatan Lesson Study di MI Ma’arif Kumpulrejo 02 Kurang lengkap, serta Kurangnya daya dukung Yayasan dan Kementerian Agama Kata Kunci: Lesson study, Integrasi kurikulum 2013, Peningkatan kompetensi pedagogik guru.   Abstract This study aims to describe the implementation of Lesson Study as the supporting capacity of the pedagogical competence of MI Ma'arif Kumpulrejo 02 Salatiga teachers, as well as the ability to integrate the 2013 Curriculum into the Lesson Study program training.This research is an action research with a qualitative descriptive approach with the research subjects, namely the principal and the board of teachers as well as the supervisor of MI Salatiga City with the total of 1 school principal, 3 teacher councils and 2 students and supervisors of MI City of Salatiga. The implementation of Lesson Study is emphasized on 3 stages, namely plan (plan or design), Do (implement), and See (observe, and after that reflect on the results of the observations). The implementation of Lesson Study at MI Ma'arif Kumpulrejo 02 still needs further assistance in making RPP according to the 2013 curriculum keeping in mind the urgency of integrated character education in the subject. Lesson Study should be developed by involving teachers, as well as education experts and practitioners from other agencies to add to their knowledge of more complex learning methods and strategies.Lesson Study also helps teachers receive welfare allowances, because the Lesson Study program is able to form superior teacher competencies. The Lesson Study Program is a forum for teachers to respond to increasingly complex developments in the era, Lesson study is able to be a supporting capacity for teachers in fighting for their health and helping teachers in responding to the challenges of the times and as a support capacity for graduate competencies and the quality of educational institutions. The obstacles that occurred in the Lesson Study process at MI Ma'arif Kumpulrejo 02 Salatiga were as follows: Lack of teacher motivation in developing the Lesson Study program, Lack of funding for the Lesson Study program at MI Ma'arif Kumpulrejo 02, Facilities and Infrastructure at MI Ma'arif Kumpulrejo 02 Incomplete, Difficulty in compiling a schedule for the implementation of the Lesson Study program at MI Ma'arif Kumpulrejo 02, Documenting Lesson Study activities at MI Ma'arif Kumpulrejo 02 Incomplete, and Lack of support capacity of the Foundation and the Ministry of Religion  Keywords:Lesson study, 2013 curriculum integration, Improvement of teacher pedagogical competence. 


2020 ◽  
Vol 5 (12) ◽  
pp. 60-66
Author(s):  
Mai Trang Pham Thị ◽  
Hoài Anh Nguyễn Thị ◽  
Thu Hiền Nguyễn Thị

Rầy nâu, rầy lưng trắng (rầy) được coi là một trong những loài sâu hại chính trên cây lúa ở trên thế giới nói chung và Việt Nam nói riêng. Rầy không những gây hại trực tiếp làm giảm năng suất và phẩm chất lúa, mà còn là môi giới truyền virus gây bệnh trên lúa. Do vậy để phòng trừ rầy người nông dân đã sử dụng rất nhiều loại thuốc hoá học (BVTV), tuy nhiên thuốc BVTV trừ rầy thường là thuốc có độc tính cao, chậm phân hủy có thể giữ tác dụng rất lâu trong sản phẩm. Để thay thế dần việc sử dụng thuốc hóa học trong sản xuất nông nghiệp, gần đây các nhà khoa học đã nghiên cứu đã thành công việc sử dụng nấm Metarhizium anisopliae (M. anisopliae) trong phòng trừ sau hại nói chung và phòng trừ rầy hại lúa nói riêng. Kết quả thử nghiệm tại Tuyên Quang năm 2015, 2016 cho thấy: Chế phẩm M. anisopliae ở liều lượng 8 kg/ha có hiệu lực trừ rầy nâu, rầy lưng trắng hại lúa, hiệu lực 10 ngày sau xử lý đạt từ  đến 61,68-65,16%, vừa không ảnh hưởng đến sự sinh trưởng, phát triển, năng suất, chất lượng của cây lúa, vừa không ảnh hưởng đến môi trường sinh thái.


1979 ◽  
Vol 46 ◽  
pp. 385
Author(s):  
M.B.K. Sarma ◽  
K.D. Abhankar

AbstractThe Algol-type eclipsing binary WX Eridani was observed on 21 nights on the 48-inch telescope of the Japal-Rangapur Observatory during 1973-75 in B and V colours. An improved period of P = 0.82327038 days was obtained from the analysis of the times of five primary minima. An absorption feature between phase angles 50-80, 100-130, 230-260 and 280-310 was present in the light curves. The analysis of the light curves indicated the eclipses to be grazing with primary to be transit and secondary, an occultation. Elements derived from the solution of the light curve using Russel-Merrill method are given. From comparison of the fractional radii with Roche lobes, it is concluded that none of the components have filled their respective lobes but the primary star seems to be evolving. The spectral type of the primary component was estimated to be F3 and is found to be pulsating with two periods equal to one-fifth and one-sixth of the orbital period.


Author(s):  
J. R. Adams ◽  
G. J Tompkins ◽  
A. M. Heimpel ◽  
E. Dougherty

As part of a continual search for potential pathogens of insects for use in biological control or on an integrated pest management program, two bacilliform virus-like particles (VLP) of similar morphology have been found in the Mexican bean beetle Epilachna varivestis Mulsant and the house cricket, Acheta domesticus (L. ).Tissues of diseased larvae and adults of E. varivestis and all developmental stages of A. domesticus were fixed according to procedures previously described. While the bean beetles displayed no external symptoms, the diseased crickets displayed a twitching and shaking of the metathoracic legs and a lowered rate of activity.Examinations of larvae and adult Mexican bean beetles collected in the field in 1976 and 1977 in Maryland and field collected specimens brought into the lab in the fall and reared through several generations revealed that specimens from each collection contained vesicles in the cytoplasm of the midgut filled with hundreds of these VLP's which were enveloped and measured approximately 16-25 nm x 55-110 nm, the shorter VLP's generally having the greater width (Fig. 1).


1998 ◽  
Vol 36 (1) ◽  
pp. 51-54
Author(s):  
MUIR ◽  
MARTIN ◽  
KENDALL ◽  
MALIK

Author(s):  
Chrisanthi Nega

Abstract. Four experiments were conducted investigating the effect of size congruency on facial recognition memory, measured by remember, know and guess responses. Different study times were employed, that is extremely short (300 and 700 ms), short (1,000 ms), and long times (5,000 ms). With the short study time (1,000 ms) size congruency occurred in knowing. With the long study time the effect of size congruency occurred in remembering. These results support the distinctiveness/fluency account of remembering and knowing as well as the memory systems account, since the size congruency effect that occurred in knowing under conditions that facilitated perceptual fluency also occurred independently in remembering under conditions that facilitated elaborative encoding. They do not support the idea that remember and know responses reflect differences in trace strength.


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