bluuebunny/crossref_metadata_2025 huggingface dataset:
Assessment of quality and food safety of vegetable oils produced on the base of wild berries of Kazakhstan`s forest areas
Authors:   S.Seifullin Kazakh Agrotechnical University, Аidarkhanova G. , Satayeva Z. ,   S.Seifullin Kazakh Agrotechnical University, Ebel A. ,   S.Seifullin Kazakh Agrotechnical University, Jakanova М. ,   Republic diagnostic center Corporate fund «University Medical Center» Nazarbayev University, Volosianko O. ,   National University of Life and Environmental Sciences of Ukraine, Seilkhanov Т. ,   Sh.Ualikhanov Kokshetau State University
Published: December 2020

Many species of forest plants in combination with vegetable oils are the sources of new types of functional products with increased biological efficiency. In respect that the high demand for vegetable oils among the population and industry, the growing anthropogenic pressure on various components of the natural environment, the goal of the research was to create oil mixtures based on sunflower oil and wild berries selected in the forest areas of Kazkhstan`s regions, assess their quality and food safety. The base of the oil mixture was sunflower oil obtained from sunflower seeds by the "cold squeeze" method. Wild berries selected from forest areas of northern (Elaeagnusrhamnoides (L.) A. Nelson) and eastern (Rosa majalisHerrm.,Vacciniummyrtillis L.) of Kazakhstan were used as bio-additives. In the obtained oil mixtures, the basic parameters of their qualitative and quantitative composition were studied. It was found that by density (917-918), refractive index (1,473), acid number (1,4 mg KOH/g), iodine number (130-132 g J2/100), saponification number (188 mg/g) of the tested oil mixtures they correspond to unrefined vegetable oil of higher grade. The content of heavy metals (Pb, As, Cd, Cu, Zn, Mg) and radionuclides (90Sr, 137Cs) does not exceed the maximum permissible concentrations and meets the requirements of regulatory documents and standards. In samples of vegetable oils, the amount of oleic acid (52,21%), linoleic acid (28,97%) is determined, which are within the normal range, although they are adjacent to the levels of the upper limits. NMR spectroscopy confirmed that the optimal ratio of ω-6 and ω-3 polyunsaturated fatty acids in the composition of the studied vegetable oils correspond to their name in the ratio of monounsaturated and polyunsaturated fatty acids.
Impact of γ-irradiation on biofilm-formation by corrosion-relevant heterotrophic bacteria
Authors:   Institute of Microbiology and Virology, Boretska M. , Shavanova K. ,   National University of Life and Environmental Sciences of Ukraine, Ruban Yu. ,   National University of Life and Environmental Sciences of Ukraine, Pareniuk O. ,   National University of Life and Environmental Sciences of Ukraine
Published: December 2020

At nuclear hazard sites, such as the Chernobyl reactor sarcophagus or Fukushima Nuclear Power Plant, radiation is one of the main factors influencing microbial communities including those involved in microbially influenced corrosion (MIC) of metal structures. By studying the impact of radiation on corrosion-relevant bacteria it may be possible in the future to predict changes in MIC. We believe that the composition and function of natural multi-species biofilms will change when exposed to the stress of ionizing radiation. To address this possibility, biofilm formation by Pseudomonas pseudoalcaligenes and Stenotrophomonas maltophilia were studied after exposure to a range of radiation dosages. Altered planktonic cell morphologies and biofilm architectures on submerged glass surfaces were noted 3 – 7 days after low-doasage sub-lethal irradiation (5.3 Gy) of samples at the micro-colony, macro-colony and mature biofilm stages of development. Furthermore, significant differences in the percentage area covered by biofilms and the release of viable planktonic cells was also noted. These observations suggested that exposure, considered as insignificant levels of irradiation, can be enough to alter biofilm formation of corrosion-relevant bacteria. Such low dosage radiation may have significant impact on soil microbial communities in nuclear hazard sites, potentially altering the MIC of exposed metal structures, their stability and service life of underground metal constructions.
Biological and morphological features of ixode ticks of the western region of Ukraine
Authors:   Sumy National Agrarian University, Levytska V.
Published: December 2020

Ticks of the family Ixodidae are widespread in Central Europe, belong to the group of three-host ticks and play an important role in agriculture, among domestic animals and in the epidemiological well-being of humans. The study of ticks D. reticulatus and I. ricinus was carried out in Khmelnytsky, Chernivtsi, Vinnytsia and Ternopil regions, in 12 cities and eight districts. In addition, monitoring was carried out in the administrative centers of the regions at certain points. During three years (2018–2020) 3768 Ixodid ticks were collected: 2784 D. reticulatus (1719 females, 886 males, 142 larvae, 37 nymphs) and 984 I. ricinus (508 females, 367 males, 93 larvae, 16 nymphs), 4830 animals were examined in Khmelnytsky, Chernivtsi, Vinnytsia and Ternopil regions. The life cycle of I. ricinus ticks usually took three years. Their greatest peak, as a rule, occurred in spring and early summer, with the second active period in autumn in some districts of Khmelnytsky and Ternopil regions during all three years. During the study of D. reticulatus ticks observed the emergence of abundant populations of ticks in open, non-urban areas, which were found on the outskirts of villages, in abandoned areas, pastures and forests. The life cycle of ticks was one or two years, depending on environmental conditions. Ticks of this species were more common in cold areas with sufficient relative humidity. The main period of activity of adults was spring, with a secondary peak in autumn, but the dynamics varied significantly depending on the region. Morphological abnormalities in ticks were detected during the research.
Constructivity of application of the principle of land target purpose
Authors:   National University of Life and Environmental Sciences of Ukraine, Volodymyr Yermolenko
Published: December 2020

The article examines the often criticized as a post-Soviet remnant application of land division into categories by purpose. Based on the analysis of the content of the main codified acts of private law and natural resources, it is concluded that the principle of purpose is not the exclusive property of land law, having a deeper universal nature due to its wide application in various versions of current legislation. In the Land Code of Ukraine alone, about 40 percent of the articles are focused on the purpose of land, which makes it a supporting land law institution, the replacement of which will require the simultaneous replacement of all land legislation. Insufficient substantiation of proposals to replace the purpose with planning and zoning of the territory is proved. Key words: purpose of lands, land categories, land planning, land zoning
On the issue of legal regulation of labor relations in agricultural cooperatives
Authors:   National University of Life and Environmental Sciences of Ukraine, Tamara Novak , Viktoriia Melnyk ,   Bila Tserkva National Agrarian University
Published: December 2020

The article analyzes the problems of the current state of legal regulation of labor relations in agricultural cooperatives. Prospects for the settlement of these relations in the context of labor reform and updating of agricultural legislation are investigated. According to the results of the study, a conclusion was made about the low degree of regulation of agrarian labor relations in agricultural cooperatives by the norms of agrarian law. It is determined that in the existing drafts of the Labor Code in terms of settlement of the studied relations a prominent place is given to the local level, which again brings us back to the problem of low level of labor relations with members of agricultural cooperatives by local acts. It is established that based on the provisions of the Law of Ukraine «On Agricultural Cooperation» dated 21.07.2020 № 819-IX the most acceptable way of legal registration of labor participation of members of agricultural cooperatives, will be the conclusion of employment contracts with such persons. It is stated that the abolition of mandatory labor participation of members of the cooperative in its activities and the complexity of regulating such relations in the future may lead to the spread of the practice of not establishing this condition in the statutes of such entities. It is proposed to develop a bylaw that would regulate the method and procedure for registration of relations on labor participation of members of the cooperative in its activities, determine the characteristics of the work of members of the cooperative. A proposal was made to include in the Law of Ukraine «On Agricultural Cooperation» № 819-IX norms on the peculiarities of the regulation of labor relations in agricultural cooperatives. Keywords: agrarian labor relations, cooperative, legal regulation, labor in agriculture, agricultural cooperative, labor relations, membership
Specifics of criminal liability for a brutal and premeditated murder under the criminal legislation of some foreign countries
Authors:   National University of Life and Environmental Sciences of Ukraine, Svitlana Kovalova
Published: December 2020

The article is dedicated to research on criminal liability for a brutal and premeditated murder under the criminal legislation of some foreign countries. It determines the principal trends in inflicting punishment for this type of an aggravated premeditated murder. It explains that the states of continental Europe and the countries of the Anglo-Saxon legal system have no common approach to incorporating a characteristic of a premeditated murder such as «extreme brutality» in their criminal legislations. It shows that the relevant characteristic is represented by a full scope of extreme brutality in the criminal laws of some states; other countries define just some aspects of extreme brutality; yet in a number of countries, extreme brutality is not defined as an aggravating circumstance of a murder at all. In other countries, although extreme brutality is not defined as a qualification, the elements of a crime are defined as a premeditated murder committed in a brutal way. Keywords: a premeditated murder, an aggravating circumstance, extreme brutality, criminal liability, foreign legislation, legal systems, punishment
Physical violence in the family: the essence and the means of resistance
Authors:   National University of Life and Environmental Sciences of Ukraine, Nadiia Stasiuk
Published: December 2020

The scientific article reveals the essence of physical violence as a form of domestic violence and unlawful behavior of a person. Signs of physical violence in the family have been identified. In general, the reasons that lead to domestic violence are: a) social; b) economic; c) pedagogical; d) rights; e) political; e) physiological and other. The normative basis of the study is the Constitution, laws and other normative-legal acts of Ukraine, which regulate measures against violence, agreements, declarations. Also, the programs for victims and those who committed this offense, which are reflected in the Law of Ukraine «On Prevention and Suppression», are considered. The field of publicity and state structures in the implementation of legislation on counteraction to physical violence is highlighted. The conclusion was that physical violence in family relations requires not only the strengthening of responsibility under the Criminal Code of Ukraine and the Code of Conduct. As well as writing a methodological recommendation based on the Code of Ukraine on Administrative Offenses to Prevent Physical Violence. Keywords: domestic violence, misconduct, domestic violence, physical violence in the family, signs of domestic violence,violence against women
PENGEMBANGAN PERANGKAT PEMBELAJARAN MATEMATIKA MODEL KOOPERATIF TIPE STAD POKOK BAHASAN DALIL PYTHAGORAS
Authors: Rahmawati Rahmawati
Published: December 2020

Jenis penelitian ini adalah penelitian pengembangan yang bertujuan untuk mengembangkan perangkat pembelajaran berupa BS, LKS dan RPP yang valid, efektifdanpraktis.Penelitianinidilakukanpadakelas VIII6MTs Negeri Model Makassar dengan subjek penelitian adalah siswakelas VIII6.Instrumen dalam penelitian ini adalah(1) Lembar Pengamatan Aktivitas Siswa Selama Pembelajaran, (2) Lembar Pengamatan Aktivitas Guru Selama Pembelajaran, (3) Lembar Pengamatan Pengelolaan Pembelajaran dengan Model Kooperatif Tipe STAD, (4) Respon Siswa terhadap Kegiatan Pembelajaran, dan (5) TesHasilBelajar. Hasil penelitian menunjukkan bahwa hasil uji coba perangkat pembelajaran diuraikan sebagai berikut: (1) Skor rata-rata yang diperoleh siswa pada tes hasil belajar adalah 67,70 dari skor ideal 100 dengan standar deviasi 15,59. Banyaknya siswa yang tuntas belajara dalah 31 dari 40 orang (77,5%). Data ini menunjukkan bahwa ketuntasan klasikal tercapai, (2) kategori aktivitas siswa yang diamati memenuhi Interval Toleransi PWIyang ditentukan, (3) Pada umumnya siswa memberikan respon positif terhadap perangkat pembelajaran matematika dengan model kooperatif tipe STAD, dan (4) Tingkat kemampuan guru mengelola pembelajaran dengan menggunakan model pembelajaran kooperatif tipe STAD termasuk dalam kategori sangat tinggi.Kata Kunci: pengembangan perangkat, model kooperatif, tipe STAD, dalil Pythagoras
FAKTOR-FAKTOR YANG MEMPENGARUHI KESULITAN DAN MINAT BELAJAR MAHASISWA JURUSAN PENDIDIKAN BIOLOGI UNIVERSITAS SULAWESI BARAT
Authors: Jeranah Jeranah , Nur Syamsiara , Nurmiati Nurmiati
Published: December 2020

Penelitian dilakukan dengan menggunakan metode survei yang bertujuan untuk mengetahui faktor-faktor yang menyebabkan kesulitan dan minat belajar mahasiswa biologi unsulbar angkatan 2013 pada mata kuliah Fisiologi Tumbuhan. Data yang berupa hasil belajar dikumpulkan dengan menggunakan tes objektif , sedangkan data yang berupa respon kesulitan dan minat belajar mahasiswa berupa kuesioner, observasi, dan wawancara. Analisis data dengan menggunakan tes objektif diperoleh hasil menunjukkan bahwa mahasiswa lebih banyak mendapat nilai C yaitu dengan persentase 52, 94% dan nilai D dengan 11,67%. Disimpulkan bahwa pemahaman mahasiswa tentang konsep Fisiologi Tumbuhan tergolong masih rendah. Hal ini tentu saja disebabkan karena kesulitan belajar mengenai konsep Fisiologi Tumbuhan dan kurangnya minat belajar mahasiswa di mana penyebab tersebut berasal faktor internal yaitu dari diri mahasiswa sendiri dengan persentase masing-masing 52,94% dan 47,06%.Kata Kunci: Kesulitan belajar, Minat belajar, Mahasiswa biologi
Analisis Parameter Anomali SP Menggunakan Metode Inversi Non linier Pendekatan Linier
Authors: Fajriani Fajriani , Hamzah Hardi , Srigutomo Wahyu , Pratomo Prihamdhanu Mukti
Published: December 2020

nterpretasi anomali self-potential (SP) model geometri sederhana (fixed geometry) sederhana, dilakukan untuk menghitung kedalaman, sudut polarisasi benda, moment dipole listrik, dan bentuk struktur benda dibawah permukaan yang mempengaruhi data SP yang diamati diatas permukaan. Dalam mengidentifikasi parameter anomali SP akibat dari model fixed geometry dibawah permukaan bumi dapat dilakukan dengan cara pemodelan inversi. Dalam tulisan ini pemodelan inversi diselesaikan menggunakan pendekatan linier dengan metode least-square terbobot dan metode Levenberg-Marquardt. Kedua metode ini diaplikasikan untuk menentukan nilai parameter dari anomali self-potential akibat struktur sesar, dengan menganggap struktur sesar menyerupai bentuk lempeng. Metode least-square terbobot dan Levenberg-Marquardt mampu mengikuti pola hasil data pengukuran di lapangan. Kedua metode inversi tersebut efisien karena proses perhitungannya yang relatif singkat serta nilai parameter model struktur lempeng hasil perhitungan kedua metode tersebut menunjukkan hasil yang sama hanya terdapat sedikit selisih perhitungan pada nilai kemiringan sudut lempeng.Kata kunci: anomali self-potential, fixed geometry, pendekatan linier
Meningkatkan Keterampilan Berpikir Kritis Melalui Pembelajaran Kooperatif Tipe Jigsaw Pada Mahasiswa Biologi STKIP PI Makassar
Authors: Kamriana Kamriana , Nasrianty Nasrianty
Published: December 2020

Penelitian ini merupakan penelitian kuasi eksperimen dengan desain non-equivalent pretest-posttest control groupyang bertujuan untuk mengetahui pengaruh Pembelajaran KooperatifTipe Jigsaw terhadap Keterampilan Berpikir Kritis MahasiswaSTKIP Pembangunan Indonesia Makassar.Sampel dalam penelitian adalah mahasiswa Prodi Pendidikan Biologi STKIP Pembangunan Indonesia Makassar yang terdiri dari dua kelas dan berlaku sebagai kelompok eksperimen dan kelompok kontrol.Pengumpulan data dilakukan dengan observasi pada proses pembelajaran, Wawancara, nilai post tes serta dokumentasi.Observasi dilakukan dengan menggunakan lembar observasi pada saat proses pembelajaran. Nilai post test terdiri dari 10 pertanyaan essay secara keseluruhan.Teknik analisis data dilakukan dengan menggunakan statistik deskriptif kualitatif dan kuantitatif.Kata kunci: Keterampilan Berpikir Kritis,Kooperatif Tipe Jigsaw, Pembelajaran
Pengaruh Penerapan Model Pembelajaran Kooperatif Tipe Quick On The Draw terhadap Peningkatan Hasil Belajar Matematika Siswa
Authors: Marniati Marniat , Tahir Tahir
Published: December 2020

Tujuan dari penelitian ini adalah untuk mengetahui perbedaan peningkatan hasil belajar matematika siswaantara siswa yang belajar menggunakan model pembelajaran kooperatif tipe quick on the draw dengan siswa yang belajar menggunakan model pembelajaran konvensional. Penelitian ini merupakan penelitian eksperimen yang bertujuan untuk mencari pengaruh perlakuan tertentu terhadap yang lain dalam kondisi yang terkontrol. Hasil penelitian diuji menggunakan uji hipotesis untuk mengetahui adanya perbedaan hasil belajar siswa antara siswa yang belajar menggunakan model pembelajaran kooperatif tipe quick on the draw dengan siswa yang belajar menggunakan model pembelajaran konvensional. Selain itu juga digunakan analisis statistik deskriptif untuk melihat perubahan sebelum dan sesudah perlakuan. Dari hasil penelitian menggunakan uji hipotesis dan analisis statistik deskriptif menunjukkan bahwa terdapat perbedaan peningkatan hasil belajar siswa yang belajar menggunakan model pembelajaran kooperatif tipe quick on the draw dengan siswa yang diajar dengan menggunakan model pembelajaran konvensional. Model pembelajaran kooperatif tipe quick on the draw dapat meningkatkan kemampuan belajar siswa sehingga terdapat perbedaan yang cukup signifikan antara kelompok siswa yang belajar menggunakan model pembelajaran kooperatif tipe quick on the draw dan kelompok siswa yang belajar dengan pembelajaran konvensional.Kata kunci: Kooperatif , Quick on the draw
Respon Hematologi Ikan Nila (oreochromis niloticus) pada Suhu Pemeliharaan yang Berbeda
Authors: Saparuddin Saparuddin
Published: December 2020

Penelitian ini bertujuan untuk mengetahui pengaruh suhu media pemeliharaan yang berbeda terhadap respon hematologi ikan nila (Oreochromis niloticus) meliputi jumlah kadar glukosa darah, eritrosit, leukosit, dan trombosit. Metode yang digunakan dalam penelitian ini adalah metode eksperimental yang terdiri dari empat perlakuan yaitu kontrol (suhu 29oC), A (suhu 31oC), B (suhu 33 oC) dan C (35 oC) dengan masing-masing perlakuan diulang tiga kali. Berdasarkan hasil uji yang dilakukan pada suhu pemeliharaan yang berbeda diketahui bahwa ikan nila mengalami stres pada perlakuan A, B dan C dibandingkan dengan ikan kontrol. Hal ini ditandai dengan tingginya kadar glukosa darah hingga akhir pemeliharaan terdapat pada perlakuan C (35oC) sebesar 145,04 mg/dL. Nilai tertinggi total eritrosit terdapat pada perlakuan A (31oC) sebesar 3,36 x 106 sel/ml. Total leukosit tertinggi terdapat pada perlakuan C (35oC) sebesar 7,08 x 104 sel/ml. Nilai tertinggi trombosit pada perlakuan B (33oC) sebesar 1,74 x 105 sel/ml. Dapat disimpulkan bahwa peningkatan suhu air pada akuarium dapat menyebabkan stres pada ikan nila sehingga dapat mempengaruhi fisiologi hematologi normal ikan.
Komposisi Kimia Batu Kapur Alam dari Indutri Kapur Kabupaten Kolaka Sulawesi Tenggara
Authors: Megawati Megawati , Alimuddin Alimuddin , Abdul Kadir Laode
Published: December 2020

Potensi sumber daya mineral kabupaten Kolaka hampir tersebar diseluruh kecamatan. Ini dibuktikan dengan adanya beberapa perusahaan tambang yang beroperasi di kabupaten Kolaka. Salah satu mineral yang ada di kabupaten Kolaka adalah batu kapur atau yang biasa dikenal dengan istilah batu gamping. Batu kapur ialah jenis batuan sedimen yang umumnya mengandung senyawa karbonat terutama Kalsium Karbonat (CaCO3). Pada umumnya batu kapur diolah untuk bahan campuran bangunan, industri, serta bahan kimia  bagian sektor katalis. Analisis komposisi batu kapur dari kabupaten Kolaka telah dilakukan dalam penelitian ini. Hal ini dilakukan untuk mengetahui kualitas batu kapur alam Kolaka agar kedepannya bisa menjadi bahan pertimbangan untuk dimanfaatkan lebih lanjut. Hasil analisis menggunakan X-Ray Fluorescence (XRF) menunjukkan komposisi mineral yaitu CaO, CaCO3 , Al2O3, SiO2, CaO, Fe2O3, MgO , Cr2O3 , Fe2O3,  K2O, MnO, Na2O, P2O5,  ZnO,  SO3  dan TiO2.
Inventarisasi Tanaman Obat di Lokasi Pembangunan Kampus Universitas Sulawesi Barat (Studi Pendahuluan)
Authors: Ainnadya Hasan Phika , Firman Firman , Nurhidayah Nurhidayah
Published: December 2020

Sejak tahun 2015 universitas sulawesi barat sedang melaksanakan pembangunan kampus. Pembangunan ini melibatkan pembukaan hutan menjadi lahan terbuka. Ini akan menyebabkan penurunan keanekaragaman hewan dan tumbuhan di daerah tersebut. Hingga saat ini belum ada data dari penelitian sebelumnya mengenai keanekaragaman hewan dan tumbuhan di lokasi pembangunan kampus universitas sulawesi barat. Data ini menjadi penting untuk mengetahui perubahan keankeragaman di wilayah tersebut. Penelitian ini bertujuan untuk menghitung komposisi jenis tanaman obat di lokasi pembangunan kampus universitas sulawesi barat. Pengumpulan data dilakukan dengan metode angket. Hasil menunjukan bahwa terdapat tujuh jenis tanaman obat, yaitu Muntingia calabura, Ageratum conizoides, Solanum lycopersicum, Psidium guajava, Jatropha curcas, Sauropus androgynous, Phyllanthus niruri, Coleus scutellaroides dan Euphorbia hirta.
Penentuan Energi Dasar Atom Berilium (Be) Menggunakan Metode Variasional Dengan Dua Parameter
Authors: Azis Nurlina , Bidalo Fitriah , Su’ud Zaki
Published: December 2020

Studi ini bertujuan untuk menentukan energi dasar atom Berilium (Be) menggunakan metode variasional dengan dua parameter. Perhitungan energi dasar atom Berilium dilakukan dengan meminimalisasi fungsi gelombang untuk mempeoleh nilai parameter variasi yang efektif. Dengan menggunakan metode variasional dua parameter, diperoleh energrameter. Perhitungan energi dasar atom Berilium dilakukan dengan meminimalisasi fungsi gelombang untuk mempi keadaan dasar atom Berilium sebesar -394,066 eV (1,26% dari energi referensi) dengan nilai parameter Z1 = 3,65837 dan Z2 = 2,10137. Dari hasil tersebut, terlihat bahwa nilai energi keadaan dasar yang diperoleh cukup mendekati nilai energi referensi. Hal ini mengindikasikan bahwa metode variasional dua parameter cukup baik dalam menjelaskan sifat-sifat energi keadaan dasar suatu atom.
Penentuan Energi Dasar Ion B2+ Dengan Menggunakan Metode Variasional Dua Parameter
Authors: Lutfin Nursakinah Annisa , A Fauziah
Published: December 2020

Penentuan energi dasar ion B2+ telah dilakukan dengan menggunakan metode variasional dengan dua parameter. Pada prinsipnya metode ini menggunakan suatu fungsi yang ternormalisasi. Selain itu, dengan sebuah fungsi coba dan penggunaan parameter akan memberikan pendekatan dan faktor koreksi yang lebih baik untuk memperoleh nilai energi dasar yang sebenarnya. Pada penelitian ini dilakukan pendekatan dengan membandingkan energi ion B2+ pada keadaan dasar yang diperoleh terhadap nilai energi eksperimen. Fungsi gelombang yang digunakan yaitu pendekatan fungsi gelombang atom Hidrogen. Energi Dasar ion B2+ dengan menggunakan metode variasional 1 paramater tanpa interaksi antar elektron yaitu sebesar -765 eV, sedangkan energi dengan interaksi antara elektron  dengan 1 paramter yaitu -629.4823 eV. Energi Dasar ion B2+ dengan menggunakan 2 parameter tanpa interaksi elektron secara numerik yaitu sebesar -679.9999 eV, sedangkan energi dasar dengan interaksi elektron menggunakan metode variasional untuk 2 parameter yaitu -633.4906 eV. Perbandingan nilai yang diperoleh dengan membandikan hasil yang diperoleh dan hasil eksperimen memberikan persentase kesalahan perhitungan variasional 1 parameter energi tanpa interaksi sebesar 19.99% dan sebesar 1.26 % untuk energi dengan interaksi antara elektron, sedangkan untuk variasional 2 parameter tanpa interaksi sebesar 6.66% dan sebesar 0.633 % untuk energi dengan interaksi antara elektron .
Integrasi Kegiatan Self-diagnosis pada Pembelajaran Hukum Pascal Menggunakan Pendekatan STEM
Authors: Siti Hannah , Suwarma Irma Rahma , Jauhari Agus
Published: December 2020

penelitian ini bertujuan untuk mengetahui peningkatan penguasaan konsep fisika dan self-diagnosis peserta didik menggunakan pendekatan STEM pada kelas XI SMA materi hukum pascal. Desain penelitian one-group pretest-posttest dengan sampel 30 orang siswa. Berdasarkan hasil temuan, terdapat peningkatan penguasaan konsep [ = 0,51] dari pre-test ke post-test. Pada kegiatan self-diagnosis diidentifikasi bahwa terdapat perbedaan skor [z = 1,75; p = 0,9599] siswa hasil penilaian peneliti dan hasil self-scoring. Diagnosa diri yang lebih mendalam memicu serangkaian langkah implisit yang mendorong mereka untuk mengatur kembali kognisi mereka dengan cara memperbaiki letak kesalahan yang mereka lakukan. Sehingga kegiatan pembelajaran pendekatan STEM yang melibatkan aktivitas self-diagnosis dapat meningkatkan penguasaan konsep peserta didik.
Hasil Belajar Matematika Model Pembelajaran Creative Problem Solving Berbantuan Media Pembelajaran
Authors: Marniati Marniati , Jahring Jahring
Published: December 2020

Penelitian ini merupakan penelitian eksperimen yang bertujuan untuk mengetahui efektivitas model pembelajaran creative problem solving (CPS) berbantuan media pembelajaran terhadap hasil belajar siswa. Populasi penelitian ini adalah siswa Kelas IX SMP Negeri 1 Baula. Menggunakan cluster random sampling diperoleh 2 kelas sampel  sebagai kelas eksperimen dengan model pembelajaran CPS berbantuan media pembelajaran dan kelas kontrol dengan pembelajaran konvensional. Desain penelitian berupa posttest yang diberikan setelah diberikan treatment atau perlakuan berupa penerapan model pembelajaran CPS dan pembelajaran konvensional. Secara deskriptif menunjukkan bahwa dari 20 orang siswa pada kelas eksperimen dengan mean 66,5, varians 84,26, dan standar deviasi 9,18, sedangkan pada kelas kontrol yang berjumlah 20 orang dengan mean 60, 95, varians 111,63, dan standar deviasi 10,66. Ditinjau dari proses dan keterlaksanaan pembelajaran, kedua kelas menunjukkan kriteria aktif dengan persentase sebesar 75% - 85%. Secara inferensial dengan menggunakan uji-t, thitung = 1,773 > ttabel = 1,685 yang mengindikasikan bahwa terdapat perbedaan yang signifikan antara hasil belajar matematika dengan model pembelajaran CPS dan pembelajaran konvensional. Sehingga disimpulkan bahwa model pembelajaran CPS berbantuan media pembelajaran efektif terhadap hasil belajar matematika siswa kelas IX SMP Negeri 1 Baula.
Pengaruh Pemberian Mikroorganisme Lokal Keong Mas Pengganti Pupuk Anorganik pada Tanaman Kedelai
Authors: Kurniawan N , Lestari A. P. , Martino D
Published: December 2020

Penelitian bertujuan untuk mengetahui apakah Mikroorganisme Lokal Keong Mas mampu menggantikan peran pupuk anorganik pada tanaman kedelai. Pelaksanaan penelitian   di “Teaching and Research Farm” Fakultas Pertanian Universitas Jambi, Desa Mendalo Indah, Kecamatan Jambi Luar Kota, Kabupaten Muaro Jambi. Rancangan yang digunakan adalah Rancangan Acak Kelompok yang terdiri dari perlakuan kombinasi pupuk anorganik N,P,K dan MOL Keong Mas, yaitu K0 = 100% pupuk anorganik, K1 = 75% pupuk anorganik dan 25% MOL Keong Mas, K2 = 50% pupuk anorganik dan 50% MOL Keong Mas, K3 = 25% pupuk anorganik dan 75% MOL Keong Mas, K4 = 100% MOL Keong Mas. Hasil penelitian menunjukkan bahwa  pemberian kombinasi 50% pupuk anorganik dan 50% MOL Keong Mas memberikan hasil yang dapat menggantikan peran pupuk anorganik pada tanaman kedelai dan dapat mempertahankan hasil pada tanaman kedelai (Glycine max L.)
Gambaran Umum Trigona spp. di Kabupaten Luwu Utara Provinsi Sulawesi Selatan
Authors: Ainnadya Hasan Phika , Gita Maulidyah Andi , Baihaqi Ahmad
Published: December 2020

Lebah madu tidak bersengat tersebar dibeberapa pulau di Indonesia, diantaranya Jawa, Kalimantan dan Sulawesi dengan beberapa spesies endemik. Penelitian ini bertujuan untuk memberikan gambaran umum mengenai lebah madu tidak bersengat Kabupaten Luwu Utara, Provinsi Sulawesi Selatan. Penelitian ini bersifat eksploratif yang dilakukan di tiga desa di Kabupaten Luwu Utara, yaituDesa Sabbang, Desa Baebunta dan Desa Bone-bone. Hasil pengamatan menunjukan terdapat tiga jenis lebah tidak bersengat yang dominan, yaitu Trigona incisa, Trigona leviceps dan Trigona biroi.Terdapat perbedaan jenis pakan pada ketiga desa yang menyebabkan perbedaan warna sarang.
Efektivitas Model Pembelajaran Kumon terhadap Peningkatan Hasil Belajar Matematika Siswa Kelas VIII
Authors: Halidin Halidin
Published: December 2020

Penelitian ini merupakan penelitian eksperimen dalam bentuk Pre-Eksperimental Design dengan tujuan 1) untuk mengetahui hasil belajar Pretest matematika siswa sebelum diajar dengan model pembeljaran Kumon; 2) untuk mengetahui hasil belajar Posttest matematika siswa setelah diajar dengan model pembelajaran Kumon; 3) untuk mengetahui apakah model pembelajaran Kumon efektif terhadap peningkatan hasil belajar matematika siswa kelas VIII SMP Negeri 05 Poleang Timur dalam pengajaran kubus dan balok. Populasi dalam penelitian ini adalah seluruh siswa kelas VIII SMP Negeri 05 Poleang Timur tahun ajaran 2018/2019 yang tersebar dalam 3 kelas pararel dengan jumlah 56 siswa. Pengambilan sampel dilakukan dengan menggunakan teknik Purposive Sampling diperoleh satu kelas penelitian, yaitu kelas eksperimen. Sampel dalam penelitian ini berjumlah 18 orang. Teknik pengumpulan data ini menggunakan teknik tes dan non tes. Teknik analisis data menggunakan statistik deskriptif dan statistik inferensial. Hasil penelitian secara empiris (deskriptif) menunjukkan bahwa; 1) hasil belajar siswa sebelum diajar dengan model pembelajaran Kumon yang terdiri dari 15 orang diperoleh nilai minimum 44.60, nilai maksimum 84.90, rata-rata (mean) 67.6013, varians 177.435, dan standar deviasi 13.32049; 2) hasil belajar siswa setelah diajar dengan model pembelajaran Kumon yang terdiri dari 15 orang diperoleh nilai minimum 49.71, nilai maximum 100, rata-rata (mean) 72.9993, varians 227.327, dan standar deviasi 15.07735; 3) melalui analisis lembar observasi aktivitas guru dan aktivitas siswa pada kelas penelitian telah menunjukkan kriterian sangat aktif dengan nilai rata-rata >80%. Hasil penelitian secara inferensial dengan menggunakan uji-t telah diperoleh nilai thitung = 4,79 dengan ttabel = 1.76, menunjukkan bahwa H0 di tolak dan H1 diterima. Secara inferensial ini berarti bahwa model pembelajaran Kumon efektif terhadap peningkatan hasil belajar matematika siswa kelas VIII SMP Negeri 05 Poleang Timur dalam pengajaran kubus dan balok.
Teori Titik Tetap Pemetaan C-kontraktif di Ruang Metrik Kompleks
Authors: Ansar Ahmad , Hikmah Hikmah
Published: December 2020

Konsep titik tetap suatu pemetaan sangat terkait dengan ruang abstrak pemetaan tersebut berada. Ruang metrik kompleks merupakan perumuman dari ruang metrik.  Dalam tulisan ini, dijelaskan mengenai eksistensi dan ketunggalan titik tetap pemetaan C-kontraktif di ruang metrik kompleks  Selanjutnya, hasil yang diperoleh diperluas pada pemetaan C-kontraktif lemah dan ditunjukkan eksistensi dan ketunggalan titik tetapnya di ruang metrik kompleks.
Publications by Izyaslav M. Kerzhner
Authors: Gapon D.A.
Published: December 2020

Izyaslav Moiseyevich Kerzhner, a world distinguished specialist on the taxonomy of Heteroptera, published 278 works on systematics and fauna of Heteroptera and some other aspects of the zoology. One of the latest works is in the present issue of Zoosystematica Rossica, and another one is in press.
Review of the eastern Palaearctic species of Janssoniella (Hymenoptera: Pteromalidae), with descriptions of four new species
Authors: Tselikh E.V.
Published: December 2020

The eastern Palaearctic species of the genus Janssoniella Kerrich, 1957 are reviewed. Four new species, Janssoniella albiclava Tselikh et Lee, sp. nov. and J. kawabatai Tselikh, sp. nov. (from South Korea and Japan), J. magna Tselikh et Lee, sp. nov. (from South Korea and the Russian Far East), and J. rachini Tselikh, sp. nov. (from Japan and the Russian Far East), are described and illustrated. The male of J. notata Kamijo, 1960 is described for the first time. Janssoniella caudata Kerrich, 1957 is newly recorded from eastern Siberia. An identification key to females of the six eastern Palaearctic species of Janssoniella is given.
A controller for brushless direct current electric motors. Part 2. Software
Authors: Syroka Zenon
Published: December 2020

A universal controller for brushless direct current (BLDC) motors was designed in the presented article. The system is controlled from the user console where operating parameters are set by the user. Signals are transmitted by cables to microcontrollers which control and monitor electric motors. Microprocessors communicate via a data bus. The controller contains the user console module and the motor control module. The user console module generates commands, and motors are controlled and monitored by the control module. Motor control modules operate independently, and each brushless motor has a dedicated control module. Brushless motors can be controlled in bipolar or unipolar mode. The control method is selected by the operator. The user console and motor controllers communicate via the I²C bus.
Assessment of technical condition of means of transport moving around Great Poland and their impact on road safety
Authors: Gorzelanczyk Piotr
Published: December 2020

The article evaluates the technical condition of means of transport moving around Great Poland and their impact on road safety. To this end, the number of transport vehicles registered in Poland was analyzed, and the effects of technical disability of vehicles were assessed. In addition, the following tests were carried out: examination of the technical condition of lighting, tires of means of transport. Finally, appropriate conclusions were drawn.
Multistage surgical repair for split notochord syndrome with neuroenteric fistula: case report
Authors: Mathkour Mansour , Scullen Tyler , Huang Brendan , Werner Cassidy , Gouveia Edna E. , Abou-Al-Shaar Hussam , Maulucci Christopher M. , Steiner Rodney B. , St. Hilaire Hugo , Bui Cuong J.
Published: December 2020

Split notochord syndrome (SNS) is a rare congenital defect of the central nervous system and has been associated with several anomalies affecting multiple organ systems. One association has been communication with the gastrointestinal tract and the spine, previously identified as a neuroenteric fistula (NEF). Here, the authors describe the unique case of a female infant with SNS and NEF treated with a multistage surgical repair. The three-stage operative plan included a two-stage repair of the defect and temporary subgaleal shunting followed by delayed ventriculoperitoneal shunt placement. The infant recovered well postsurgery and over a 5-year follow-up. A case description, surgical techniques, and rationale are reported. Additionally, a systematic review of the literature utilizing the MEDLINE database was performed.

Treatment of SNS with NEF using a multidisciplinary multistaged approach to repair the intestinal defect, close the neural elements, and divert cerebrospinal fluid to the peritoneum is shown to be a safe and viable option for future cases.
Long-term stability of fusiform dilatation of the internal carotid artery following surgery adjacent to the circle of Willis: report of 2 cases
Authors: Karsten Madeline B. , Scott R. Michael
Published: December 2020

Fusiform dilatation of the internal carotid artery (FDCA) is a known postoperative imaging finding after craniopharyngioma resection. FDCA has also been reported following surgery for other lesions in the suprasellar region in pediatric patients and is thought to be due to trauma to the internal carotid artery (ICA) wall during tumor dissection. Here, the authors report 2 cases of pediatric patients with FDCA. Case 1 is a patient in whom FDCA was visualized on follow-up scans after total resection of a craniopharyngioma; this patient’s subsequent scans and neurological status remained stable throughout a 20-year follow-up period. In case 2, FDCA appeared after resection and fenestration of a giant arachnoid cyst in a 3-year-old child, with 6 years of stable subsequent follow-up, an imaging finding that to the authors’ knowledge has not previously been reported following surgery for arachnoid cyst fenestration. These cases demonstrate that surgery involving dissection adjacent to the carotid artery wall in pediatric patients may lead to the development of FDCA. On very long-term follow-up, this imaging finding rarely changes and virtually all patients remain asymptomatic. Neurointerventional treatment of FDCA in the absence of symptoms or significant late enlargement of the arterial ectasia does not appear to be indicated.
Spine-specific skeletal related events and mortality in non–small cell lung cancer patients: a single-institution analysis
Authors: Adogwa Owoicho , Rubio Daniel R. , Buchowski Jacob M. , D’Souza Alden , Shlykov Maksim A. , Jennings Jack W.
Published: December 2020

OBJECTIVE

The population prevalence of non–small cell lung cancer (NSCLC) continues to increase; however, data are limited regarding the incidence rate of skeletal related events (SREs) (i.e., surgery to the spinal column, radiation to the spinal column, radiofrequency ablation, kyphoplasty/vertebroplasty, spinal cord compression, or pathological vertebral body fractures) and their impact on overall mortality. In this study, the authors sought to estimate the incidence rates of SREs in NSCLC patients and to quantify their impact on overall mortality.

METHODS

This was a single-institution retrospective study of patients diagnosed with NSCLC between 2002 and 2014. The incidence rates for bone metastasis and subsequent SREs (per 1000 person-years) by time since lung cancer diagnosis were calculated and analyses were stratified separately for each histological type. Incidence rates for mortality at 1, 2, and 3 years from diagnosis stratified by the presence of SREs were also calculated. Kaplan-Meier survival curves were constructed to describe crude survival ratios in patients with spine metastasis and SREs and those with spine metastasis but without SREs. These curves were used to estimate the 1- and 2-year survival rates for each cohort.

RESULTS

We identified 320 patients with incident NSCLC (median follow-up 9.5 months). The mean ± SD age was 60.65 ± 11.26 years; 94.48% of patients were smokers and 60.12% had a family history of cancer. The majority of first-time SREs were pathological vertebral body compression fractures (77.00%), followed by radiation (35%), surgery (14%), and spinal cord compression (13.04%). Mortality rates were highest in NSCLC patients with spine metastasis who had at least 1 SRE. Stratifying by histological subtype, the incidence rate of mortality in patients with SRE was highest in the large cell cohort, 7.42 per 1000 person-years (95% CI 3.09–17.84 per 1000 person-years); followed by the squamous cell cohort, 2.49 per 1000 person-years (95% CI 1.87–3.32 per 1000 person-years); and lowest in the adenocarcinoma cohort, 1.68 per 1000 person-years (95% CI 1.46–1.94 per 1000 person-years). Surgery for decompression of neural structures and stabilization of the spinal column was required in 6% of patients.

CONCLUSIONS

SREs in NSCLC patients with bone metastasis are associated with an increased incidence rate of mortality.
Мониторинг разрушения волокон композитных материалов с применением системы акустической эмиссии, виброанализатора и высокоскоростной видеосъемки
Authors: Махутов Н.А. , Иванов В.И. , Соколова А.Г. , Васильев И.Е. , Чернов Д.В. , Скворцов Д.Ф. , Бубнов М.А.
Published: December 2020

The initial cause of the acoustic emission (AE) in the process of deformation and destruction of solids is considered. A theoretical analysis of the processes of transformation and energy dissipation during the destruction of structural bonds of an idealized solid model is carried out. The research of wave process arising in the deformation and rupture of fiber reinforced composites is conducted using AE system A-line32D and PCI-2, vibration analyzer Onix, high speed camera Videosprint and numerical simulation in the software LS-DYNA. The obtained experimental and calculated data showed that the main energy in the time interval after the fiber rupture is released in the range of audio frequencies less than 2 kHz. The peak values energy recorded in the ultrasonic frequency range does not exceed a few percent relative to the maximum level at the carrier frequency in the audio range.
Параметры акустической неоднородности для неразрушающей оценки влияния технологии изготовления и эксплуатационной поврежденности на структуру металла
Authors: Пасманик Л.А. , Камышев А.В. , Радостин А.В. , Зайцев В.Ю.
Published: December 2020

In this paper, we propose a non-destructive acoustic method for assessing microstructural alterations produced in metals as a result of processing and exploitation damage. The method is based on measuring ratios of longitudinal and shear ultrasound waves velocities with subsequent normalization of these ratios to their counterparts corresponding to a “baseline state” of the metal. The choice of the baseline state depends of the particular problem and corresponds to either the pre-exploitation metal state for the object to be monitored, or the state of reference samples, for which the strength characteristics fall into acceptable range according to the results of conventional strength-evaluation methods. For the introduced Microstructure-Sensitive Acoustic parameters (MSA-parameters) characterizing alterations in the metal microstructure, we discuss the reasons of the difference between the baseline and current states of the metal in terms of the total values of the normal and tangential compliances imparted to the metal due to the appearance of microstructural heterogeneities. The efficiency of utilization of the proposed acoustic diagnostic parameters is demonstrated using experimental data for two types of metal samples with essentially different microstructure (isotropic and anisotropic heterogeneity). Measurements of the proposed microstructure-sensitive acoustic parameters can be used in a variety of applications: (i) non-destructive quality control of manufacturing technologies in metallurgy and mechanical engineering (ii) evaluation of damage accumulation during exploitation manufactured constructions/samples; (iii) evaluation of mechanical properties, fracture resistance and other physical parameters of metals.
Активный тепловой контроль ударных повреждений в композиционных материалах, изготовленных методом 3D-печати
Authors: Шагдыров Б.И. , Чулков А.О. , Вавилов В.П. , Каледин В.О. , Омар М.
Published: December 2020

By using the technique of ultrasonic infrared thermography, it is demonstrated that the technology of 3D printing of composite parts allows avoiding the appearance of working hole micro-cracks which are conventional in the case of mechanical processing. The strength of composites toward impact damaging can be evaluated by relative variations of material thermal properties in defect areas. It is assumed that more powerful impacts lead to more severe defects and, respectively, greater variations in composite thermal effusivity and diffusivity. The damage resistance of Kevlar, carbon fiber reinforced polymer (CFRP) and their hybrid was comparatively evaluated. It was found that 15 J impact produced the 4/8 % variations of thermal effusivity/diffusivity in the hybrid composite. The thermal property variations in CFRP and Kevlar were 10/9 % and 15/11 % respectively.
Teachers' views on a double transit in Grade 4: From Foundation Phase to Intermediate Phase and from Indigenous Language to English
Authors:   University of Limpopo, Ruth Emsley Maletšema
Published: December 2020

South African Grade Four learners cannot read and comprehend written language in their own mother-tongue. In the midst of this challenge, the Language in Education policy prescribes that these learners should use English as Language of Learning and Teaching (LoLT). The primary objective of this study is to investigate the effects of double exit experienced in the transition from Grade 3 to Grade 4; and from indigenous language learning to learning in English. The study used semi-structured interviews in collecting data from 6 purposively sampled participants who teach Grade Four classes. Qualitative thematic and narrative analysis were used to scrutinize data. The research findings identified negative impact of transition on teaching and learning, teachers' diffidence and incompetence to teach in English, the overuse of code switching and lack of support by authorities, schools lack of focus and direction in mitigating the transition challenges, and participants' suggestions on how to mitigate the challenges of transition. The study recommends that the use of English as LoLT should be introduced at an advanced stage for second language learners.
Tool Wear Evaluation Based on Design Space Exploration Coupled with Explicit Cutting Simulations and Cutting Forces Excitation Signature
Authors: Berariu Andrei–Ionut , Prodan Iulia–Maria , Gorobievschi Sebastian–Stefan , Deaconescu Tudor – Ion
Published: December 2020

Cutting operations are still one of the main methods used in the industry for surface generation in mass production. The dynamics of these processes are complex and having a good insight into the interdependencies of the nonlinear physical phenomena can be translated into better cutting performance. One of the main cutting tool
geometrical parameter, usually associated with wear, is the cutting edge radius. Continuous direct evaluation of this parameter exhibits some important limitations offline, if this evaluation needs to be online the whole process becomes very complicated due to the measurement limitations that might appear. For online cases, the best approach is to determine the amplitude of this parameter indirectly using various side effects that can be correlated. One possible option is to monitor the vibrations generated by the resulting cutting forces. In the latest years, the usage of explicit finite element methods (FEM) to simulate the cutting processes has grown
exponentially with the continuous increase of computation efficiency. With the help of Computer-Aided Engineering (CAE in short) solutions and using the latest advances in design space exploration (DSE) solutions, it is possible to create models able to parametrically explore a design space (DS), having precise targets, and also get
the important correlations for all the important, quantifiable, cutting parameters.
This paper presents an innovative method to create tool wear evaluation models focused mainly on the cutting edge radius indirect evaluation. The proposed method uses guided simulation loops able to generate a variety of dynamic signatures which are further post-processed to get a complex correlative model. The model can be applied in real cutting cases using the reciprocity property and can determine online the state of the cutting edge radius for further tool wear evaluation. The paper concludes with an analysis of the obtained model and the applicability of the data for the intended purpose.