bluuebunny/crossref_metadata_2025 huggingface dataset:
RELASI ANTARA KEMAMPUAN NUMERIK DENGAN PRESTASI BELAJAR MATEMATIKA
Authors: Jelatu Silfanus , Emenensia Mon Mayona , San Selvianus
Published: September 2020

Prestasi belajar matematika merupakan istilah yang berhubungan dengan pencapaian hasil belajar yang ditandai dengan penguasaan materi setelah mengikuti pembelajaran. Prestasi belajar matematika siswa pun beragam, dari yang tinggi sampai yang rendah. Berdasarkan fakta-fakta yang ditemukan di lapangan, peneliti berhipotesis bahwa faktor yang mempengaruhi atau yang melatarbelakangi masalah rendahnya prestasi belajar siswa adalah faktor inteligensi dengan indikatornya terletak pada tingkat kemampuan numerik siswa. Penelitian ini bertujuan untuk mengetahui apakah terdapat hubungan yang positif dan signifikan antara kemampuan numerik dengan prestasi belajar matematika siswa. Populasi dalam penelitian ini sebanyak 647 orang siswa kelas XI APH SMK Sadar Wisata Ruteng. Pemilihan sampel dilakukan dengan menggunakan teknik proporsional random sampling. Jumlah anggota sampel keseluruhannya adalah 87 siswa. Data kemampuan numerik dan data prestasi belajar matematika siswa dikumpulkan menggunakan metode tes. Hipotesis penelitian diuji dengan menggunakan teknik analisis korelasi. Hasil analisis data dari penelitian ini memberikan nilai koefisien korelasi sebesar 0,612 dan nilai thitung= 7,135 lebih besar dari ttabel= 1,6629 (7,135>1,6629). Selanjutnya Hasil analisis uji signifikan diperoleh nilai thitung = 7,135, sedangkan nilai ttabel = 1,663 pada taraf signifikansi (α) = 0,05 dan dk = n-2 = 87-2= 85. Ternyatayaitu 7,135 > 1,663. Dari hasil analisis ini dapat disimpulkan bahwa ada hubungan yang positif dan signifikan antara kemampuan numerik dengan prestasi belajar matematika siswa, artinya semakin tinggi kemamuan numerik seseorang maka prestasi belajarnya pun semakin baik. Begitupun sebaliknya. Dari hasil analisis juga diperoleh informasi bahwa besarnya sumbangan atau kontribusi kemampuan numerikterhadap prestasi belajar matematikaadalah 37,46%, sedangkan sisanya 62,54% dijelaskan oleh variabel lain yang tidak diteliti.
THE EFFECTIVENESS OF DIGITAL STORYTELLING ON STUDENTS’ SPEAKING ABILITY
Authors: Idayani Andi
Published: September 2020

Speaking is an assential skill that used be mastered by the Students, because it is necessary for them to improve their ability to communicate orally by presenting their ideas and opinions in real life. Digital storytelling is the practice of using computer-based tools to tell stories. It can be used as homework, classroom group projects, or a holiday project for students. In relation to this, the purpose of the research is to find out is there any significant effect of digital storytelling on students’ speaking ability. Then, Describing and analyzing the effectiveness of digital storytelling in enhancing students’ speaking ability. in this study, the researcher used experimental research. An experimental usually involves two groups of subject, an experimental group and a control group. The population of this research was the fifth semester of English students of FKIP - Islamic University of Riau in academic year 2018/2019. The sampling technique used in this research is purposive sampling. The researcher choose 5B as experimental class which consist of 26 students and 5C as control class which consist of 25 students. The reseracher used speaking test as instrument which included in pre-test and post-test. The results of the research revealed that ttest > ttable (14,402>2.05954), ttable on degree freedom (df) 25 on the level of significant 0.05. Consequently, it means that the alternative hypothesis is accepted while the null hypothesis is rejected. So, the conclusion of the research has shown that there is positive effect of digital storytelling towards students’ speaking ability.
Grammatical Error Made by EFL Learners of STIBA Persada Bunda in Thesis Proposal
Authors: Maspufah
Published: September 2020

Writing is regarded as one of difficult skill in learning English because it needs more effort to elaborate a complex process of generating, organizing, and revising ideas on a paper. Since English is not students’ mother tongue, error might be occurred in their writing. This research was intended to identify the types and the causes of error made by EFL learners of STIBA Persada Bunda in thesis proposal. It was a descriptive research. Thirteen students from the eighth semester of 2018-2019 academic years were taken for the sample. The instruments used to collect the data were in quantitative and qualitative form. Students’ thesis proposals were taken for quantitative data. Interview was used for qualitative data. The result showed that there were four types of grammatical error found in EFL learners’ thesis proposal: addition, omission, misformation, and misordering. The Errors in their thesis proposal were caused by three conditions: inter-lingual, intra-lingual, and communication strategy-based error. Inter-lingual occurred because of first language interfere when transferring from first language to target lnguage. Intra-lingual occurred in the incomplete rule application and exploiting redundancy. Avoidance caused communication strategy-based error. It could be concluded that EFL learners’ competence in writing needed to be improved as there were many grammatical errors occurred in their thesis proposal.
Aplikasi E-Test “That Quiz” sebagai Digitalisasi Keterampilan Pembelajaran Abad 21 di Sekolah Indonesia Bangkok
Authors: Kuncahyono Kuncahyono , Suwandayani Beti Istanti , Muzakki Abdurrohman
Published: September 2020

Internet of things merupakan bagian dari pemanfaatan E-learning yang dapat digunakan sebagai strategi pembelajaran dengan memanfaatkan fasilitas teknologi informasi dan komunikasi virtual. Bentuk pemanfaatan teknologi tersebut salah satunya dapat dimanfaatkan dalam pembelajaran tematik dan penilaian berbasis online. Berdasarkan hasil analisis situasi di Sekolah Indonesia (SIB) KBRI Bangkok didapatkan hasil dalam kegiatan tersebut berdasarkan pengamatan menunjukkan bahwa masih ditemukan adanya beberapa guru yang masih memerlukan pembaharuan tentang pembelajaran berbasis teknologi informasi, sekitar 45% peserta didik kurang aktif, penilaian pembelajaran masih bersifat konvensional dan belum diintegrasikan dalam teknologi internet. Tujuan penelitian ini untuk mengetahui kontribusi media kuis interaktif that quiz sebagai inovasi penilaian berbasis online menggunakan internet of things. Metode yang digunakan dalam penelitian ini menggunakan metode deskriptif kualitatif. Teknik pengumpulan data dalam penelitian ini menggunakan wawancara, observasi, dan pemberian angket. Penelitian ini menghasilkan pembelajaran sekaligus penilaian berbasis kuis online menggunakan aplikasi that quiz. Pembelajaran dilakukan secara daring dengan memanfaatkan internet of things. Guru-guru menghasilkan produk akun quiz online dengan aplikasi open source that quiz. Hasil pelaksanaan pembelajaran yang dilaksanakan guru menggunakan aplikasi that quiz bahwa guru lebih mudah mengakses materi secara ringkas dan cepat. Guru lebih mudah melaksanakan penilaian dan kontrol siswa secara langsung. Akses pembelajaran dan penilaian dapat dikontrol secara terbuka oleh orang tua. Peningkatan kompetensi digital skill karena guru terlibat langsung dalam proses perencanaan, kegiatan pembelajaran dan evaluasi pembelajaran. Guru hendaknya menambah materi dalam kuis online. Guru dapat meningkatkan varian jenis soal-soal penilaian pada ranah lain.
Bottom Ash: Pengganti Agregat Halus dalam Pembuatan Beton
Authors: Hardiana  , Junus Nasruddin , Mushar Pratiwi
Published: September 2020

Penggunaan batubara sebagai sumber energi pada PLTU menghasilkan limbah padat berupa bottom ash dan fly ash dari hasil pembakaran. Pemanfaatan limbah bottom ash khususnya yang dihasikan oleh PLTU Jeneponto masih belum optimal. Besarnya jumlah limbah dapat mencemari lingkungan sekitar, jika limbah tersebut langsung dibuang ke lingkungan lambat laun akan membentuk gas metana yang sewaktu-waktu dapat terbakar atau meledak dengan sendirinya, selain berbahaya bagi lingkungan limbah hasil pembakaran batubara membutuhkan fasilitas pembuangan yang relatif mahal. Tujuan pembahasan adalah membandingkan kuat tekan antara beton normal dengan beton yang menggunakan bottom ash sebagai agregat halus. Metode penelitian yang digunakan adalah metode eksperimental yakni uji laboratorium dengan menganalisis hubungan sebab akibat antara satu sama lain dan membandingkan hasilnya. Masing-masing benda uji dirawat dengan metode dry curing dan wet curing, jumlah benda uji beton sebanyak 48 buah, dengan variasi umur beton 3 hari,7 hari, 14 hari dan 28 hari. Hasil penelitian ini menyatakan limbah bottom ash dapat difungsikan sebagai pengganti agregat halus. Nilai hasil pengujian pada umur 28 hari menunjukan hasil rata-rata kuat tekan beton normal dry curing lebih tinggi 13,28% dari beton bottom ash yang dirawat dengan metode dry curing. Pada metode wet curing, nilai kuat tekan beton normal lebih tinggi 40.17% dari beton bottom ash.
Groundwater Withdrawal-Induced Land Subsidence
Authors: Guzy Artur
Published: September 2020

This entry presents a comprehensive review of models used to predict land surface displacements caused by rock mass drainage, as well as (2) recent advances and (3) a summary of InSAR implementation over recent years to support the aquifer compaction modelling process. Therefore, the study presented would be of benefit to readers who are interested in the topic of interaction between the human population and the hydrogeological system in different regions. The research presented allows readers to better understand the factors, developments and effects of groundwater drainage and thus facilitate large - scale risk assessment and preventive planning.
Cellulose-Based Polymers in Additive Manufacturing
Authors: Mohan Denesh , Sajab Mohd Shaiful
Published: September 2020

The materials for additive manufacturing (AM) technology have grown substantially over the last few years to fulfill industrial needs. Despite that, the use of bio-based composites for improved mechanical properties and biodegradation is still not fully explored. This limits the universal expansion of AM-fabricated products due to the incompatibility of the products made from petroleum-derived resources. The development of naturally-derived polymers for AM materials is promising with the increasing number of studies in recent years owing to their biodegradation and biocompatibility. Cellulose is the most abundant biopolymer that possesses many favorable properties to be incorporated into AM materials, which have been continuously focused on in recent years. This critical review discusses the development of AM technologies and materials, cellulose-based polymers, cellulose-based three-dimensional (3D) printing filaments, liquid deposition modeling of cellulose, and four-dimensional (4D) printing of cellulose-based materials. Cellulose-based AM material applications and the limitations with future developments are also reviewed.
CLINICOHISTOPATHOLOGICAL PROFILE OF NASAL AND SINONASAL LESIONS: A STUDY FROM CENTRAL INDIA
Authors: Manjiri G Khade  , Rekha N Patil  , Dinkar T Kumbhalkar  , Suwarna B Patil  , Pradip S Umap
Published: September 2020

Background: Nasal and sinonasal lesions comprise common as well as rarest rare lesions. This region being a site of histopathologically diverse lesions, interests pathologists.

Objectives: The study aimed to find out incidence of nasal and sinonasal lesion with frequency of non-neoplastic, neoplastic  lesions,  to study spectrum of lesions histopathologically along with correlation of clinical and radiology findings.

Material and methods: It was a 2 year retrospective observational study involving 102 cases from January 2012 to December 2013 carried out at Government medical college, Nagpur.

Study included all specimens received as nasal and sinonasal lesions. Complete clinical history and radiological findings were correlated with histopathology findings.

 Results: Nasal and sinonasal lesions are rare having 1.07 % incidence rate. Majority of patients of nonneoplastic and benign neoplastic category belonged to 11-20 age group while malignancies were common in 41-50 age group. We encountered more neoplastic lesions (53.92%) compared to nonneoplastic lesion (46.08%).  Male to female ratio was 1.5:1. Sensitivity, specificity and diagnostic accuracy of clinical diagnosis was 94.73%, 97.67 % and 96 % respectively while positive predictive value and negative predictive value was 98.18 % and 93.33 %. p value was 0.317. Discordance in clinic-histopathological diagnosis was in 5.88 %

Conclusion: Though there was good correlation between clinicoradiology findings and histopathology, however in 5.88% discordant cases histopathology diagnosis led to significant alteration of treatment plan proving key role of histopathology diagnosis.

Keywords: Benign, Central India, Clinicohistopathology, Profile, Malignant, Nasal, Sinonasal.
Pengaruh Imbangan Aquadest dalam Pembuatan Sabun Mandi Cair Berbahan Virgin Coconut Oil (VCO)
Authors: Widyasanti Asri , Ramadha Cindy Almas
Published: September 2020

ABSTRAK             Sabun merupakan surfaktan yang digunakan bersama air untuk membersihkan atau mencuci yang tersedia dalam bentuk padat dan cair. Bahan baku sabun mandi cair menggunakan minyak kelapa murni (VCO). Penelitian ini bertujuan untuk membuat sabun mandi cair, mencari jumlah imbangan aquadest yang terbaik dalam pembuatan sabun mandi cair, dan mengetahui perbandingan mutu sabun mandi cair yang dihasilkan terhadap karakteristik sabun mandi cair. Metode penelitian menggunakan metode eksperimental desain laboratorium dengan analisis deskriptif dengan pembuatan sabun metode panas. Perlakuan pada penelitian ini dengan perbedaan imbangan aquadest yang diberikan untuk pembuatan sabun mandi cair berbahan minyak kelapa murni yaitu A = sabun mandi cair dengan imbangan aquadest : pasta sabun (1:1), B = sabun mandi cair dengan imbangan aquadest : pasta sabun (2:1), dan C = sabun mandi cair dengan imbangan aquadest : pasta sabun (3:1) dari 200 gram basis sabun. Pengamatan pada sabun mandi cair antara lain sifat fisik sabun, sifat kimia sabun, dan uji organoleptik. Hasil analisis menunjukan bahwa semua formula sabun mandi cair memenuhi persyaratan berdasarkan SNI sabun mandi cair 06-4085-1996. Formula sabun mandi cair dengan perlakuan C (sabun mandi cair dengan imbangan aquadest : pasta sabun (3:1)) merupakan produk terbaik secara keseluruhan. Hasil analisis sabun mandi cair pada perlakuan C adalah bobot jenis 1,055, kadar alkali bebas 0,0073 %, nilai pH 9,07 , nilai angka lempeng total 1  koloni/g, nilai viskositas 3400 cPs , dan nilai stabilitas busa 27,66%. Sehingga teknologi proses pembuatan sabun mandi cair dengan minyak kelapa murni dengan imbangan aquadest yang terbaik dapat dikembangkan dan diaplikasikan pada skala rumah tangga dan industri.Kata kunci: Imbangan Aquadest,  Minyak Kelapa Murni, Sabun Cair,  Mutu Sabun
Analisis Potensi Pengembangan Komoditas Salak Pondoh (Salaca edulis) di Kecamatan Banjarmangu Kabupaten Banjarnegara
Authors: Hidayatun Hidayatun , Roessali W , Ekowati T
Published: September 2020

ABSTRAKPenelitian ini bertujuan untuk menghitung pendapatan usahatani salak pondoh, menganalisis bagaimana potensi produksi dan potensi pengembangan komoditas salak pondoh di Kecamatan Banjarmangu Kabupaten Banjarnegara. Penelitian dilaksanakan Bulan November hingga Desember 2017. Metode penelitian yang digunakan adalah survey, pengambilan sampel dilakukan menggunakan metode multistage random sampling dengan mengambil Desa Pekandangan dan Desa Sipedang di Kecamatan Banjarmangu yang paling banyak mengusahakan tanaman salak. Responden dalam penelitian ini berjumlah 80 responden yang terdiri dari 60 responden petani salak pada analisis pendapatan, 20 responden dalam analisis SWOT yang terdiri dari 6 dinas pemerintah, 10 petani salak, dan 4 pedagang. Metode analisis data menggunakan analisis pendapatan, analisis LQ dan analisis SWOT. Hasil penelitian menunjukkan bahwa pendapatan petani salak pondoh sebesar Rp 4.964.615/bulan. Produksi salak pondoh pada periode 2012 – 2014 bukan merupakan komoditas basis dengan nilai LQ < 1, sedangkan pada Tahun 2015 dan 2016 merupakan komoditas basis di Kecamatan Bajarmangu dengan nilai LQ 1,726 pada Tahun 2015 dan 1,560 pada Tahun 2016. Hasil analisis SWOT menunjukkan bahwa skor pada matrik IFE 2,97 dan matrik EFE menunjukkan skor sebesar 2,76. Skor tersebut menunjukkan potensi pengembangan komoditas salak di Kecamatan Banjarmangu berada pada kuadran 1 yang menunjukkan bahwa komoditas salak pondoh memiliki kekuatan internal untuk memanfaatkan peluang yang ada.Kata kunci: basis, pengembangan, LQ, SWOT, salak pondoh
Analisis Hubungan Dinamika Kelompok dengan Efektivitas Kelompok Tani Tranggulasi Di Desa Batur, Kecamatan Getasan, Kabupaten Semarang
Authors: Amalia Aghnia Azka
Published: September 2020

Dinamika kelompok yang tinggi diperlukan suatu kelompok sehingga tujuan kelompok dapat tercapai dan terbentuk kelompok dengan efektivitas tinggi. Unsur dinamika kelompok sebagai faktor penunjang efektivitas kelompok perlu diketahui hubunganya dengan efektivitas kelompok untuk mengetahui unsur yang perlu ditingkatkan. Tujuan penelitian adalah untuk mengetahui hubungan antara dinamika kelompok dengan efektivitas kelompok di Kelompok Tani Tranggulasi. Penelitian mengambil tempat di Kelompok Tani Tranggulasi, Desa Batur, Kecamatan Getasan, Kabupaten Semarang. Penelitian menggunakan metode sensus dimana seluruh anggota Kelompok Tani Tranggulasi sebanyak 32 orang dijadikan sebagai responden. Data yang telah dikumpulkan di analisis dengan menggunakan korelasi spearman. Hasil penelitian menunjukan bahwa gaya kepemimpinan, kohesivitas kelompok dan pertemuan kelompok tidak memiliki hubungan signifikan sedangkan pembagian tugas memiliki hubungan yang signifikan dengan koefisien korelasi 0,538.
Penerapan Model Pembelajaran Kooperatif Tipe STAD Sebagai Upaya Untuk Meningkatkan Prestasi Belajar Seni Budaya Dan Kesenian Pada Siswa Kelas VIII B SMP Negeri 3 Weru Tahun Pelajaran 2016/ 2017
Authors: Suyoto .
Published: September 2020

Tujuan penelitian tindakan kelas ini adalah untuk meningkatkan prestasi belajar SBK melalui model pembelajaran kooperatif tipe Student Teams Achievement Division pada siswa kelas VIII B Semester IISMP Negeri 3 Weru tahun pelajaran 2016/2017. Penelitian ini dilaksanakan pada bulan Januari sampai Mei 2017 di SMP Negeri 3 Weru. Subjek penelitian ini adalah siswa kelas VIII B sebanyak 22 siswa. Penelitian Tindakan Kelas ini dilakukan dalam dua siklus. Teknik  pengumpulan data  menggunakan teknik dokumentasi, observasi, dan  tes tertulis. Alat pengumpulan data berupa lembar pengamatan, butir  soal tes, dan dokumen  daftar  nilai. Analisis data  menggunakan  analisis deskriptif  komparatif  yang dilanjutkan  refleksi. Setiap  siklus terdiri dari  empat langkah, yaitu: (1) Perencanaan, (2) Pelaksanaan Tindakan, (3) Pengamatan, dan (4) Refleksi. Hasil penelitian menunjukkan adanya peningkatan prestasi belajar siswa, nilai SBK rata-rata prestasi belajar SBK siswa mengalami peningkatan yaitu sebelum tindakan sebesar 67,3, pada siklus I sebesar 73,1 dan pada siklus II sebesar 81,3. Selain itu, persentase ketuntasan belajar siswa juga meningkat, yaitu sebelum tindakan sebesar 40,9%, siklus I sebesar 63,6% dan siklus II sebesar 90,9%. Sehingga dapat disimpulkan bahwa “Model pembelajaran kooperatif tipe STAD  dapat meningkatkan prestasi belajar SBK pada siswa kelas VIII B Semester II SMP Negeri 3 Weru tahun pelajaran 2016/2017”.
Penerapan Pendekatan Pembelajaran Saintifik untuk Meningkatkan Aktivitas dan Hasil Belajar Kimia Materi Faktor Luas Permukaan Terhadap Laju Reaksi pada Peserta Didik Kelas XI MIPA 4 SMA Negeri 1 Gemolong Tahun Pelajaran 2019/2020
Authors: Mulyati Mulyati
Published: September 2020

Tujuan penelitian ini, yaitu 1) mendeskripsikan pelaksanaan pembelajaran Kimia melalui pendekatan saintifik. 2) Menguji peningkatan aktivitas dan hasil belajar Kimia dengan pendekatan saintifik. Penelitian ini merupakan penelitian tindakan kelas. Penelitian dilaksanakan pada Semester Gasal tahun pelajaran 2019/2020 di kelas XI MIPA 4 SMA Negeri 1 Gemolong Sragen. Hasil penelitian menunjukkan bahwa penerapan pendekatan saintifik dapat meningkatkan hasil belajar Kimia materi “faktor luas permukaan terhadap laju reaksi” peserta didik kelas XI MIPA 4 SMA Negeri 1 Gemolong Sragen tahun pelajaran 2019/2020. Hal tersebut ditunjukkan oleh hasil belajar peserta didik pada tahap siklus I, dan siklus II yang mengalami kenaikan hasil belajar. Nilai rata-rata kelas meningkat sebesar 3,80 yaitu 76,36 pada siklus I dan 80,16 pada siklus II, sedangkan ketuntasan belajar meningkat sebesar 30,55 yaitu 52,78,00% pada siklus I dan 83,33% pada siklus II. Rata-rata aktivitas belajar peserta didik meningkat sebesar 13,19% yaitu 72,92% pada siklus I dan 86,11% pada siklus II.
Peningkatan Hasil Belajar Biologi Materi Sistem Pernapasan Melalui Model Problem Based Learning Bagi Peserta Didik Kelas XI MIPA 6 SMA Negeri 1 Tawangsari Semester 2 Tahun Pelajaran 2017/2018
Authors: Mulyani Sri
Published: September 2020

Penelitian ini merupakan Penelitian Tindakan kelas, yang bertujuan untuk meningkatkan proses pembelajaran biologi dan hasil belajar melalui model pembelajaran Problem Based Learning. Subjek  penelitian adalah peserta didik kelas XI MIPA 6 SMA Negeri 1 Tawangsari semester 2 yang berjumlah 38 peserta didik. Teknik pengumpulan data dengan menggunakan metode tes tertulis, observasi, dan dokumentasi. Adapun prosedur penelitian dilakukan melalui dua siklus, dan setiap siklus terdiri dari perencanaan, pelaksanaan tindakan, observasi, dan refleksi. Hasil penelitian: (1) terjadi peningkatan motivasi peserta didik dalam pembelajaran yaitu 31,58% pada prasiklus, dan 92,11% pada siklus II; (2) terjadi peningkatan keaktifan peserta didik dalam pembelajaran yaitu 31,58% pada prasiklus, dan 89,47% pada siklus II; (3)  terjadi peningkatan pencapaian ketuntasan belajar peserta didik bila dibandingkan antara prasiklus  yaitu 55,26% pada prasiklus, dan 86,84% pada siklus II.  Terjadi peningkatan pencapaian nilai rata-rata bila dibandingkan antara prasiklus 69,74, di akhir siklus II menjadi 80,00. Simpulan penelitian ini adalah penerapan model pembelajaran Problem Based Learning dapat meningkatkan kualitas proses pembelajaran dan hasil belajar biologi materi sistem pernapasan.
Peningkatan Hasil Belajar IPA Melalui Model Pebelajaran Kooperatif Tipe Jigsaw Pada Siswa Kelas IXC SMP Negeri 7 Sukoharjo
Authors: Sridadi Sridadi
Published: September 2020

Penelitian ini bertujuan untuk meningkatkan hasil belajar IPA melalui model pembelajaran kooperatif tipe jigsaw pada siswa kelas IXC SMP Negeri 7 Sukoharjo tahun pelajaran 2018/ 2019. Subjek penelitian tindakan kelas ini adalah siswa kelas IXC SMP Negeri 7 Sukoharjotahun pelajaran 2018/ 2019  sebanyak 30 siswa sebagai subjek penerima tindakan, sedangkan untuk  subjek pelaku tindakan adalah guru IPA kelas IXC selaku guru, teman sejawat selaku subjek yang melakukan observasi proses pembelajaran, Kepala Sekolah selaku subjek sumber data. Metode pengumpulan data dilakukan melalui teknik tes, observasi dan dokumentasi. Penelitian Tindakan ini dilakukan dalam dua siklus, tiap-tiap siklus terdiri dari: perencanaan, tindakan, pengamatan dan refleksi. Hasil penelitian ini menunjukkan bahwa penggunaan model pembelajaran kooperatif tipe jigsaw dapat meningkatkan hasil belajar IPA siswa kelas IXC SMP Negeri 7 Sukoharjo tahun pelajaran 2018/2019. Hal ini dapat dilihat dari nilai rata-rata hasil belajar IPA siswa juga mengalami peningkatan yaitu sebelum tindakan sebesar 68,9, pada siklus I sebesar 76,0 dan pada siklus II sebesar 81,8. Selain itu, presentase ketuntasan belajar siswa, yaitu sebelum tindakan sebesar 63,3%, pada siklus I sebesar 73,3% dan pada siklus II sebesar  93,3%.
新时期森林资源保护建议
Authors: 王 爱平 , 戚 玉刚 , 何 绍林 , 许 波 , 赵 卫民
Published: September 2020

森林是陆地生态系统的主体和重要的自然资源,在涵养水源、净化水质、防风固沙、保护生物多样性、改善生态环境质量和应对气候变化等方面发挥着不可替代的作用,是推动经济社会可持续发展的基本保障。
浅析农村生态环境监测工作开展
Authors: 周 卉
Published: September 2020

近些年,社会经济持续发展的情况下我国农村生态环境受到了严重的破坏,这种破坏对于人们正常的生活产生了负面影响。为了能够保障生态环境,采取有效的环境监测成为了其中不可或缺的一环,环境监测可以让人们更加准确了解当地的自然生态环境与自然环境产生的变化,同时按照这一变化需要采取与其需求相对的保护措施,为实现良好的保护效果创造发展基础。农村环境监测工作当前已经开局,采取空气、地表水、饮用水源以及土壤等环境要素的收集和采样措施已经成为了农村生态环境监测工作的首选,同时在选择过程中还需要不断的另其得到完善,并且要让这套措施与我国农村村庄实际特点保持一致,这些基础工作是当前最为迫切的。此外,评价方法与评价标准存在的空白也是当前需要被有效填补的领域,这就要求相关监测人员积极持续的完成探讨同时将其付诸于实践。
关于污染场地修复研究与分析
Authors: 胡 立标
Published: September 2020

土壤和地下水是人类赖以生存的物质基础,我国污染场地修复起步较晚,目前还处于起步阶段,相应的管理体系和污染场修复尚未完全建立,污染场地修复存在诸多问题。只有深刻认识到上述问题现状并建立规范的市场秩序才能更好地推动修复产业的健康发展。
新时期水利工程建设管理创新思路探究
Authors: 徐 立国
Published: September 2020

水力资源的应用是人类进步的标志之一在当今社会发展中起到了至关重要的作用。从实质上来说,水利工程的建设,其实最为主要的目的就是为了能够合理地利用水资源,并且充分地防治水害,为人民的生活和生产提供保障。随着“水利工程补短板、水利行业强监管”水利改革发展总基调的贯彻落实,水利工程项目建设的数量以及规模的不断增加,在一定程度上提高了相关部门的建设管理水平,同时也暴露出一些问题。鉴于此,笔者根据自己的工作经验对新时期水利工程建设管理创新思路进行了探究。
选林业工程抗旱造林技术
Authors: 王 景程
Published: September 2020

通过分析抗旱造林技术的实施情况,可见其中存在的问题不容小觑,只有采用有效的措施解决其中的问题,才可确保抗旱造林技术在林业工程中发挥应有的作用,为我国林业工程的长远发展提供动力。在林业工程中合理应用抗旱造林技术在促进我国森林覆盖率全面提升的同时,对推动生态经济发展具有重要的意义。因此为确保抗旱造林技术在林业工程中发挥应有的作用,相关管理部门需重视其中存在的问题,并及时寻求解决措施以实现推动林业工程长远发展的目标。
农村生活污水处理的分析
Authors: 陈 晔琳 , 金 丹敏
Published: September 2020

生活污水来源于农民生产与生活中排放的污水,主要有两大类型,即畜牧养殖污水和生活污水。生活污水包括生活中的洗浴、厕所、厨房及衣服洗涤等污水排放；畜牧养殖污水是畜牧养殖时清洗养殖场形成的高浓度废水。因此生活污水并未含有毒害物质和重金属物质,但含有较多的磷和氮,可生化性良好。由于农村并未建立污水排放管,也没有建立污水处理区域,因此无法集中处理农村生活污水。因此为了有效处理农村生活污水,本文阐述了农村生活污水的主要特性,对农村生活污水常用的处理技术及其处理问题与措施进行了探讨分析。
探讨城市污水监测与污水运营治理的作用
Authors: 罗 艳
Published: September 2020

伴随着我国市场经济的高速发展,城市化进程也在不断地加快,如今我国城市人口越来越密集,污水的排放量也在逐年增长。与此同时,我国城市的污水处理系统却没有随之发展,数量少、效率低等问题都在对城市的生态环境产生着严重地影响。水源的污染问题不仅仅直接影响着人们的日常生活,甚至阻碍了社会经济的可持续发展,因此针对城市的污水检测和运营治理开展深入地研究和探讨很有必要。本文针对上述问题提出了一些具体的解决措施,希望对加强城市的水生态环境的保护和改善提供参考,促进我国的城市污水治理效率,推动社会经济的稳定发展。
Aplikasi Kajian Islam Berbasis Android (Kajian Yuk)
Authors: Sari Wahyu Purnama , Supriadi Irwin , Muhammad Ihsan Azis , Abdil Barry Ibnu
Published: September 2020

Dalam memenuhi kebutuhan masyarakat beragama islam di Bandung terhadap permintaan informasi seputar kajian islam, aplikasi Kajian Yuk hadir sebagai solusi. Tujuan aplikasi ini dibuat untuk memudahkan Dewan Kemakmuran Masjid (DKM) dalam menyebarluaskan informasi kajian yang akan diadakan kepada masyarakat dan memudahkan pengguna mendapatkan informasi seputar waktu dan lokasi kajian. Aplikasi Kajian Yuk yang dibuat menggunakan bahasa pemrograman Java, yang menggunakan penyimpanan basis data online yaitu firebase, serta memerlukan library untuk kebutuhan pemrogramannya, dan android studio digunakan untuk membuat aplikasi. Aplikasi ini juga bisa digunakan untuk melihat kajian hari ini, mencari kajian, dan akun sebagai fitur khusus pihak Dewan Kemakmuran Masjid (DKM).
Program Kegiatan Bermain Prososial untuk Mengurangi Perilaku Agresif pada Siswa Taman Kanak-Kanak
Authors: Nisa Fahrun
Published: September 2020

Abstrak

Program Kegiatan Bermain Prososial (KBP) di sekolah merupakan salah satu program manajemen perilaku berbasis kelas yang dapat digunakan sebagai salah satu referensi bagi guru untuk mengurangi perilaku agresif siswa di sekolah. Penelitian ini bertujuan untuk melakukan uji coba terhadap modul program KBP bagi siswa di kelas taman kanak-kanak yang cenderung berperilaku agresif. Metode yang digunakan adalah metode quasi eksperimental dengan desain penelitian A-B-A. Pengukuran dilakukan dengan observasi, yakni dengan metode time sampling. Hasil analisis data menunjukkan bahwa program KBP dapat menurunkan perilaku agresif siswa di kelas taman kanak-kanak.

Abstract

The Prosocial Play Activity Program (KBP) in schools is a class-based behavior management program that can be used as a reference for teachers to reduce student aggressive behavior in schools. This study aims to test the KBP program module for students in Kindergarten classes who tend to behave aggressively. The method used is a quasi experimental method with research design A-B-A. Measurements were made by observation, namely the time sampling method. The results of data analysis indicate that the KBP program can show aggressive behavior of students in Kindergarten classes.
Influence of chemical composition of snow and water protection zones of Uchinsky and Pestovo reservoir on water quality
Authors: Suslov Sergey , Gruzdeva Ludmila , Gruzdev Vladimir , Hrustaleva Marina
Published: September 2020

Ecological geochemical research of water protection areas was held in Moscow region. Precipitation (snow) is known to influence the formation of water chemical structure and determine geochemical effect. It shows the results of snow research in water protection area of Uchinsk and Pestovo reservoirs in order to find out the sources of pollution, to assess water quality

and work out the recommendations to reduce and eliminate the sources of pollution. The article gives the evaluation of water quality depending on waterflow from the catchment area and various temporary flows. It shows the influence of excessive

use of fertilizers on water quality (especially in spring) which leads to eutrophication processes and worsens the quality of water.
Intensification of land reclamation production due to improvement of technologies of reconstruction and construction of irrigation canals
Authors: Abdrazakov Fyarid , Rukavishnikov Andrey
Published: September 2020

The article presents the modern problems of irrigation channels. The innovative material improving irrigation channels is offered.

A comparative analysis of the benefits of concrete cloth in front of the concrete lining. Technology of using concrete fabric is described and mathematically justified. The described technology consists in the use of a concrete web. Comparative analysis of the costs of the channel with concrete and slabs. A mathematical evaluation of the efficiency of irrigation canals was carried out.
论BIM技术在建筑工程施工管理中的应用
Authors: 李 德鹏
Published: September 2020

近年来，我国逐渐的加大了改革开放的力度，从而推动了社会经济的不断发展，为各个领域的发展壮大带来了良好的机遇。尤其是建筑工程行业的发展更加的迅猛，建筑工程涉及到的工作量十分巨大，具有非常突出的复杂性，并且工程整体成本较大，施工持续时间较长，牵涉到大量的工程施工工作人员。在实际开展建筑工程施工工作的过程中，极易受到多方面因素的影响，所以要想从根本上对建筑工程施工质量和效率加以保证，最为重要的就是需要从现场施工、资源调配、成本管理等方面加以全面把控，加大力度落实施工管理工作。在施工管理工作中切实的运用BIM技术能够促进各项施工工作的有序开展，并且在保证施工质量和施工安全性方面也能够起到积极的影响作用。这篇文章主要针对BIM技术在建筑工程施工管理中的实践运用展开深入的分析研究，希望能够对建筑工程行业的稳步健康发展有所帮助。
建筑暖通工程施工质量管理与控制
Authors: 柳 兵强
Published: September 2020

近些年来，我国的经济一直处于快速而稳定的增长之中，各个领域都取得了很大的进步，建筑行业同样也是得到了快速的发展。而且，因为城市化进程的发展，建筑行业的标准以及要求也在提升，建筑规模也在不断扩大。在这样的形势下，人们更加重视建筑的功能，并以此来评判工程的建设水平以及质量。暖通工程是建筑工程的一个非常重要的项目，主要是包括通风以及供暖两个项目，对用户的使用体验有着很大的影响。暖通工程是比较特殊的，必须严格控制每一个环节，要保证设计的科学性，施工的规范性，方案的可行性，所有工作都应该按照规范、标准实施。
建筑工程给排水施工技术的应用分析
Authors: 杨 洪剑
Published: September 2020

在当前时期，建筑技术呈现出较快的发展趋势，施工工艺也更为成熟，从建筑给排水工程来看，大系统、高参数则成为了主要的发展方向，这就要将给排水工程设计、施工、运维、管理等工作予以有效落实。若想保证管网运行的效率大幅提升，能耗能够切实降低，必须要保证设计方案更为合理，并提升安装质量，如此方可使得使用不受影响。文章针对建筑给排水工程展开深入探析，重点对施工技术的应用予以详细阐述。
浅谈矿井建设企业建设井下机电设备的管理与维修
Authors: 张 垒
Published: September 2020

矿井建设期间机电设备的管理水平，直接影响矿井建设企业生产工作的质量和效率。因此，作为矿井建设企业机电设备管理维修人员，必须充分认识到其本职工作的重要性，不断提升自身检测维修水平，积极学习先进检测维修技术，以良好的工作态度确保机电设备稳定运行。
解析公路桥梁养护与维修加固施工关键技术
Authors: 盖 军祥
Published: September 2020

文章首先简要阐述了公路桥梁养护与维修加固施工存在的问题，包括工程建设施工不准确、公路桥梁养护不全面、公路桥梁维修不科学、公路桥梁加固不稳定，然后围绕着加强工程施工建设、完善公路桥梁养护、提高公路桥梁维修、稳定公路桥梁加固四个层面，探讨了公路桥梁施工的技术措施，以供参考。
安全生产风险隐患双重预防体系在班前会的实践与应用
Authors: 周 伟涛 , 姜 辉
Published: September 2020

煤矿是高危行业，人员集中，安全生产形势严峻，安全基础相对薄弱。如何将安全生产风险隐患"双重预防"体系与煤矿班前会有机结合，对煤矿安全生产尤为重要。文章对如何将安全生产风险隐患双重预防体系在煤矿班前会的实践和应用进行分析论述。
建筑暖通工程施工要点及质量管理
Authors: 史 超
Published: September 2020

近年来，在多方面利好的推动下，使得我国社会发展十分的迅猛，促进了民众生活水平的提升，人们对居住环境的需求也在不断的提升，在这种形势下对建筑暖通工程施工工作提出了更高的要求。就一个建筑工程项目来说，暖通工程施工质量水平往往会对于民众生活水平存在密切的关联，并且也会对建筑工程性能的发挥起到一定的影响。所以，一旦建筑工程项目中的暖通工程施工质量不达标，那么也会对建筑工程结构质量产生一定的损害，并且会对民众正常生活造成不良影响。在组织开展建筑暖通工程施工工作的时候，因为会受到外界多方面因素的影响，往往会导致工程施工质量不能达到规定要求的情况发生，所以我们务必要在组织开展工程施工工作的过程中，切实的运用最前沿的施工理念和专业施工技术对暖通工程施工质量加以保证。鉴于此，这篇文章主要针对建筑暖通工程施工要点以及质量管理工作展开全面深入的研究分析，希望能够对推动我国建筑工程行业的持续健康发展有所帮助。
基于Ventsim的某矿山通风系统设计
Authors: 张 磊 , 叶 浩然 , 赵 林海 , 朱 义春
Published: September 2020

某新建矿山自然通风不能满足生产及安全环保要求，因此，需要重新设计机械通风系统。初步拟定该矿采用单翼对角抽出式通风，并设计了两种通风系统方案。计算获得矿井需风量，并应用Ventsim软件建立通风系统模型，开展风路模拟和风网解算，获得矿井的总通风阻力，据此确定风机型号。结果表明：利用Ventsim可以高效快速的解算复杂通风网路，计算结果可靠，两种设计方案均能满足该矿通风要求。
绿色生态可持续发展建筑设计要点研究
Authors: 张 剑
Published: September 2020

在社会前行的脚步持续加快之际，建筑工程的数量、规模均有大幅增加，在此背景下，建筑能耗的受关注程度提高了很多。展开建筑设计时，要采用可行的方法来使得能耗控制在最低范围内，确保绿色生态建筑目标真正实现。当然，在不同的地区，发展是存在一定差异的，因此要将地方环境、资源条件作为基础，完成好法律法规的建设工作，通过可行措施来保证建筑节能得到促进。
装配式住宅建筑设计及技术管理探讨
Authors: 肖 一敏
Published: September 2020

本文概括总结了国内装配式建筑从 20 世纪 50 年代至今的发展历程，分析了装配式建筑的特点和优势，即五化合一：标准化设计、工业化生产、装配化施工、一体化装修、信息化管理。以笔者所参与项目北京城市副中心职工周转房实际项目为例，介绍项目特点、装配式的应用及项目推进思路，并结合其它装配式住宅项目的实际设计及施工情况，探讨装配式在住宅建筑项目中的应用特点，指出目前装配式住宅设计过程中存在的问题。文末从设计和建造、技术和管理的整体角度对装配式建筑的发展进行思考，提出提高设计标准化水平、优化设计施工流程、提高信息化技术管理对装配式建筑推行的必要性。
高速公路桥梁工程当中加宽施工技术
Authors: 崔 强
Published: September 2020

改革开放以后，我国的经济得到了快速的发展，人们的生活水平也有了显著的提升，我国的各个领域也都有了很大的发展与变化，与此同时交通建设行业的发展也取得了显著的成果，特别是近年来，高速公路桥梁建设领域的发展速度更是非常快，之所以不断进行桥梁的建设，是因为我国的桥梁很多都已经比较老旧，已经无法满足当今的标准和要求，对于社会经济发展所能起到的作用越来越有限，所以需要对其进行加宽以及扩建，提要桥梁的使用价值以及使用年限。高速公路桥梁的加宽建设是一项重要的建设活动，和社会的发展都有着重要的关系，所以有关方面必须要重视起来，要加强对于相关施工技术的研究。
浅谈环境工程中大气污染的危害与治理
Authors: 陶 娟 , 郜 愫 , 陈 庆 , 台 文 , 李 远鹏
Published: September 2020

随着国内经济发展速度的持续加快，广大人民群众的物质生活条件明显提升，对居住环境也提出了更高的要求。然而在当前时期，大气污染程度是较为严重的，对人体健康产生的危害非常大。导致大气污染发生的原因是较多的，工业废弃物的随意排放则是其中的主要原因。文章主要针对大气污染治理问题展开深入探析，在此基础上寻找到切实可行的治理措施，以期使得大气污染产生的危害能够切实消除。
智能建筑中电气自动化技术的应用
Authors: 于 洋
Published: September 2020

近年来，在多方面利好的影响下，使得我国社会经济水平得到了显著的提升，从而推动了民众生活水平的提高，在这种形势下人们对生活环境提出了更高的要求，从而为智能建筑的产生带来了良好的机遇。智能建筑最为突出的特征就是高效性、舒适性和便利性，能够满足人们生活各种需要。将电气自动化技术切实的运用到智能建筑之中，能够促进整个建筑的智能化水平。这篇文章主要针对智能建筑中电气自动化技术的运用展开全面的分析研究，希望能够对我国智能建筑行业的良好发展有所帮助。
机械设备电气工程自动化与工厂供配电节能控制分析
Authors: 冯 淑强
Published: September 2020

社会经济的迅速发展使得我国对新型能源的需求不断的提高，因为很多能源大多都是不可再生资源，而这些资源的过度消耗对整个社会的可持续发展以及成本的控制都是非常不利的。比如当前比较紧缺的电力资源，其在人们生活生产的各个方面都是非常必要的，电力不足会在很大程度上影响生产的顺利开展。但是当前很多企业在电力使用过程中都存在不科学的情况，由此导致了电力资源的严重浪费，基于这种情况，在对电力进行分配和输送时就要制定严格的标准来执行。因此在本文中我们主要对机械设备电气工程自动化与工厂供配电节能控制进行了详细的分析与探讨，以供参考。
国有土地上房屋征收中各类土地使用权价值分析
Authors: 何 红卫
Published: September 2020

国有土地房屋征收中，会遇到土地使用价值评估问题，对相关问题进行研究有利于解决土地征收纠纷，保护人民群众根本利益。文章主要分析目前土地房屋征收中土地价值评估重要性，明确开展土地评估可实现国家利益和个人利益相统一、解决土地征收补偿矛盾，对房屋征收中各类土地的使用价值进行明确。
Process of Parentification And Construction of Ego Identity in The Cameroonian Adolescents
Authors: Mireille Ndje Ndje , Shiyghan Ndzerem Shela , Jacques Philippe Tsala Tsala
Published: September 2020

Culture and idiosyncratic family configuration play a significant role in neglect, such as parentification. Some family systems may engender an inappropriate overlap in subsystems, with member participating in roles that are traditionally reserved for other members. We have the case of adolescents in parental roles. The adolescent is brought to make personal choices that will have long term repercussions on varied domains of his life. To this effect, the society should give to him the possibility of a psycho-social moratorium which is a necessary period for the construction of a true identity. So how the construction of self-identity would be effectuated in the case of parentified adolescents. We carried out a semi-structured interview on five adolescents in Yaounde, the capital city of Cameroon who are in a situation of parentification. For the analysis, we used the content as well as the thematic analysis of the interviews. The findings show that the parentified adolescent have had no time to live the stage of adolescence. They are early parents because of the responsibilities they carry at an age or time they are not ready or prepared for. What is particular and special about them is the extent to which they are able to construct a positive self and give positive self-view of life. So, the process of parentificatin will have positive repercussions on the construction of ego identity of the adolescent. The findings of this study has shown the importance of contextual study as a good number of literature on parentification have shown the destructive and maladaptive impact of parentification on the development of adolescents.
Modelling of Inhalation Poisoning with Sulphur Mustard Gas
Authors: Bulka K. A. , Kuzmin A. A. , Sidorov S. P. , Chubar O. V. , Khalimov Yu. Sh.
Published: September 2020

The present work describes the currently existing experimental models of sulphur mustard gas inhalation injury. These models were analysed in terms of their suitability for the development of medical protective equipment. It is proposed to use micro-sprayers, which provide the possibility of transferring mustard gas from a liquid state to an aerosol form while exhibiting an increased ergonomic simplicity and safety.
Comparative Analysis of the Exploratory Activity of Rats Following the Administration of Liquid Aerosol Using “Nose Only” and “Whole Body” Inhalation Chambers
Authors: Vakhviyaynen M. S. , Sventitskaya A. M. , Kolesnikov A. M. , Nikiforov A. S. , Yakovlev O. A.
Published: September 2020

The use of various models of inhalational drug administration in pre-clinical studies is strongly limited due to the inﬂuence of liquid aerosol on the exploratory behaviour of small laboratory rodents. There are two approaches to modelling inhalational administration, which involve two types of chambers: “whole-body” and “nose-only”. In this work, we compared a change in the parameters of exploratory behaviour depending on the type of chambers used.
Effects of L-Ornithine L-Aspartate on the Physical Performance with Experimental Non-Alcoholic Fatty Liver Disease
Authors: Prikhodko V. A. , Poveryaeva M. A. , Sysoev Yu. I. , Shustov E. B. , Bunyat A. V.
Published: September 2020

In the present study, we evaluated the effects of L-ornithine L-aspartate on the physical performance of C57BL/6 mice with experimental non-alcoholic fatty liver disease (NAFLD) induced by a high-caloric “western” diet combined with intraperitoneal carbon tetrachloride injections. Using the forced swim test and triple weight-loaded exhaustive swim test, this model of NAFLD was shown to cause a signiﬁcant impairment of physical performance and a decrease in physical recovery. L-ornithine L-aspartate was found to signiﬁcantly improve physical performance and beneﬁt post-exercise recovery in mice with NAFLD.
Targeting the Initiator Protease of the Classical Pathway of Complement Using Fragment-Based Drug Discovery
Authors: Rushing Blake , Rohlik Denise , Roy Sourav , Skaff D. , Garcia Brandon
Published: September 2020

The initiating protease of the complement classical pathway, C1r, represents an upstream and pathway-specific intervention point for complement-related autoimmune and inflammatory diseases. Yet, C1r-targeted therapeutic development is currently underrepresented relative to other complement targets. In this study, we developed a fragment-based drug discovery approach using surface plasmon resonance (SPR) and molecular modeling to identify and characterize novel C1r-binding small-molecule fragments. SPR was used to screen a 2000-compound fragment library for binding to human C1r. This led to the identification of 24 compounds that bound C1r with equilibrium dissociation constants ranging between 160–1700 µM. Two fragments, termed CMP-1611 and CMP-1696, directly inhibited classical pathway-specific complement activation in a dose-dependent manner. CMP-1611 was selective for classical pathway inhibition, while CMP-1696 also blocked the lectin pathway but not the alternative pathway. Direct binding experiments mapped the CMP-1696 binding site to the serine protease domain of C1r and molecular docking and molecular dynamics studies, combined with C1r autoactivation assays, suggest that CMP-1696 binds within the C1r active site. The group of structurally distinct fragments identified here, along with the structure–activity relationship profiling of two lead fragments, form the basis for future development of novel high-affinity C1r-binding, classical pathway-specific, small-molecule complement inhibitors.
PET Radiotracers for CNS-Adrenergic Receptors: Developments and Perspectives
Authors: Alluri Santosh Reddy , Kim Sung Won , Volkow Nora D. , Kil Kun-Eek
Published: September 2020

Epinephrine (E) and norepinephrine (NE) play diverse roles in our body’s physiology. In addition to their role in the peripheral nervous system (PNS), E/NE systems including their receptors are critical to the central nervous system (CNS) and to mental health. Various antipsychotics, antidepressants, and psychostimulants exert their influence partially through different subtypes of adrenergic receptors (ARs). Despite the potential of pharmacological applications and long history of research related to E/NE systems, research efforts to identify the roles of ARs in the human brain taking advantage of imaging have been limited by the lack of subtype specific ligands for ARs and brain penetrability issues. This review provides an overview of the development of positron emission tomography (PET) radiotracers for in vivo imaging of AR system in the brain.
Beef traits of steers of Simmental breed and its crossbreds with Holstein breed
Authors: Velmatov A. , Velmatov A. , Neyaskin N. , Zelentsov S.
Published: September 2020

Scientists from different countries have accumulated a lot of material on the beef productivity of young animals obtained from crossbreeding Simmental cows with sires of Holstein breed. The purpose of the research was to study the growth dynamics and beef productivity of steers of Simmental breed and its crossbreds with Holstein breed, as well as the possibility of making a profit from the production of beef. During the period of rearing the experimental animals have been housed at the complex with loose housing barn. During the experiment the steers have consumed 3649,5 EFU and 393 kg of digestible protein. Under the same environments of feeding and housing, the expenditures of feed per 1 kg of gain in the group of Simmental steers amounted to 8,32 EFU, which were by 0,17–0,60 EFU less than in the groups of crossbred steers. In the entire period of rearing purebred Simmental animals grew more intensively, which exceeded at 18 months of age half-blooded Holstein breed analogues by 16,5 kg, 3/4-blooded – by 25,0 kg (P < 0,01) and 7/8-blooded – by 30,2 kg (P < 0,001). The study of meat productivity has shown that Simmental steers surpassed their herdmates of Holstein breed by 10,0–24,8 kg in terms of carcass weight, and their meat weight was higher than that of crossbred animals by 8,4–21,9 kg (P < 0,01–0,001). The conversion rate of feed protein to meat products has shown that Simmental steers were by 0,27–1,05 % more efficient at converting feed protein into meat products compared to crossbred herdmates, and the differences in metabolic energy conversion were by 3,9–5,86 % more. The study of the effectiveness of beef production by steers of different genotypes has shown the advantage of Simmental steers. The profit of the group of Simmental steers made up 8998 Rub that was higher by 2011 Rub than in group of half-blooded Holstein breed steers, and with the group of 3/4-blooded the difference was 2795 Rub and 7/8-blooded steers – 3190 Rub.
Morphometric parameters of rainbow trout when the use of probiotic feed additive Enzimsporin
Authors: Yesavkin Yu. , Zhigin A. , Maksimenkova A. , Grikshas S. , Pavlov A.
Published: September 2020

The main objective of commercial trout farming is to grow fish in the shortest possible time and with minimal costs, while the most important factor for effective cultivation is the completeness of feeding. The study of the effectiveness of the use and influence of biologically active additives on growth, development and product quality is the basis for practical recommendations for the use of biologically active substances in compound feed for rainbow trout. Enzimsporin is a feed probiotic additive for optimizing the digestive processes, increasing the productivity and livability of fi sh and contains a complex of spore-forming bacteria of the genus Bacillus. The purpose of the research was to evaluate the influence of the probiotic feed additive Enzimsporin on the morphometric parameters of rainbow trout when it is reared in cages. As the main diet, the production feed for commercial trout cultivation LimKorm 42/17 has been used. In the other two versions of the experiment the addition of Enzimsporin in the amount of 0,5 g/kg and 1,0 g/kg of feed has been added to it. As the result of the research, the tendency of differences in the indices of large-headedness, maximum and minimum height, and body thickness between the experimental and control groups of rainbow trout has been revealed. There were statistically significant differences in the indices of the length of the intestine and stomach, and the significant increase in the index of filling the gastrointestinal tract in experimental trout compared to the control group. The doubling of the drug dose resulted in the statistically significant increase in the feed consumed in variant 2 (1 g/kg of feed) compared to variant 1 (0,5 g/kg of feed). The drug Enzimsporin contributed to the increased appetite of fi sh and the intensity of the metabolism. Other morphophysiological parameters were within the normal range and did not diff er significantly. It has been shown that Enzimsporin in the composition of compound feed (0,5–1,0 g/kg of feed) is effective for feeding rainbow trout.
Some features of experimental researches in sheep breeding: to help of young scientists
Authors: Aboneev V. , Marchenko V. , Aboneeva E.
Published: September 2020

Organizing and conducting scientific and farm experiment is one of the most important components of any scientific and research work. The features of the modern period of animal husbandry development, the state of the feed base in all categories of farms, the availability of qualified specialists, the level and culture of conducting selection and technological techniques, create the main conditions for reliable performance of experimental researches. In sheep breeding the success of research work on the selection plan depends to a large extent on careful individual accounting of the results of insemination and lambing of ewes. Currently, in different categories of sheep farms crossbreeding is used as one of the methods for faster improvement and increasing the productivity of animals. At the same time, it is not always clear from the materials of many researches how the experimental groups of breeding stock were formed, what rules of selection were observed during artificial insemination, how accounting was carried out during insemination and lambing of ewes, what justifies the calculation of some indicators of economic effectiveness of the research without taking into account important economically useful features. The recommendations on how to eliminate possible errors when conducting research and production experiments by young scientists have been provided in the article. In particular, the main principles of forming experimental groups of sheep by age, productivity and origin have been shown. The necessity of housing all sex and age groups of experimental animals with complete feeding has been noted. The most important condition is the same number of ewes inseminated every day with the semen of each mating stud ram. It has been recommended to use vasectomy teaser rams for the authenticity of the origin of the obtained off spring. Special attention has been paid to the need to take into account all valuable economic useful features studied in the course of scientific and production experiments to calculate some indicators of economic effectiveness when rearing off spring of different origin.