bluuebunny/crossref_metadata_2025 huggingface dataset:
Potensi Pengembangan Bawang Putih sebagai Komoditas Unggulan di Kabupaten Karanganyar
Authors: Harinta Yos Wahyu
Published: September 2020

Sektor pertanian termasuk dalam salah satu sektor dalam pembangunan ekonomi Indonesia yang mendapat prioritas pengembangan. Hal ini dikarenakan Indonesia terkenal sebagai negara agraris yang sebagian penduduknya bermata pencaharian di sektor pertanian. Pembangunan wilayah perdesaan yang berbasis agribisnis telat dikembangkan oleh pemerintah sejak beberapa waktu yang lalu. Salah satu agendanya adalah mengembangkan produk pertanian yang bernilai tinggi untuk meningkatkan pendapatann dan nilai tambah bagi petani. Pembangunan wilayah yang dibatasi oleh anggaran selayaknya diprioritaskan untuk pengembangan sektor-sektor potensial yang mengandung komoditas unggulan. Pemetaan ini perlu dilakukan agar arah pengembangan daerah sesuai dengan tujuan daerah dan nasional. salah satu daerah yang mempunyai keunggulan di bidang pertanian adalah Kabupaten Karanganyar. Pada penelitian ini dilakukan analisis pemetaan komoditas hortikultura sub sayur semusim yang menjadi unggulan pada Kabupaten Karanganyar dengan menggunakan metode analisis Location Quotient (LQ). Hasil yang didapatkan dari sebelas komoditas yang dianalisis, terdapat enam komoditas yang menjadi basis (unggulan) di Kabupaten Karanganyar. Komoditas yang memperoleh nilai LQ tertinggi adalah bawang putih sebesar 7,75. Bawang putih di Kabupaten Karanganyar memang sedang dijadikan salah satu sentra di Provinsi Jawa Tengah. Beberapa kelebihan dan peluang yang menyebabkan pengembangan bawang putih di Kabupaten Karanganyar layak dilakukan adalah kondisi geografis yang mendukung, adanya varietas lokal yang unggul, adanya dukungan dari stakeholder terkait, dan banyak petani yang menanam bawang putih sejak bertahun-tahun.
Kajian Kandungan lignin dan Selulosa Jerami Padi Fermentasi
Authors: Sukaryani Sri
Published: September 2020

AbstrakPenelitian dilakukan di laboratorium fakultas Pertanian Univet Bantara Sukoharjo. Tujuannya adalah untuk mengkaji pengaruh penggunaan MA 11 dalam fermentasi terhadap kadar lignin dan selulosa jerami padi dan mengkaji waktu yang optimal dalam fermentasi dengan MA-11. Materi yang digunakan dalam penelitian ini adalah jerami padi, tepung tapioca, larutan MA-11. Perlakuan sebanyak 4 macam yaitu : T0 : Jrami padi tanpa fermentasi; T1: Jerami padi  difermentasi selama 2 hari; T2 : Jerami padi  difermentasi selama 4 hari; T3 : Jerami padi difermentasi selama 6 hari. Penelitian ini menggunakan rancangan acak lengkap pola searah dengan ulangan sebanyak 3 kali. Peubah yang diamati adalah : kadar lignin dan selulosa.  Data yang terkumpul dianalisis secara statistik dengan analisis variansi pola searah. Jika terdapat perbedaan antar perlakuan, dilakukan uji lanjut dengan uji BNT. Hasil penelitian yang didapatkan adalah bahwa lama fermentasi 2 – 6 hari berpengaruh sangat nyata menurunkan kadar lignin  dan berpengaruh sangat nyata meningkatkan kadar selulosa jerami padi. Kadar lignin jerami padi pada perlakuan T3 (fermentasi selama 6 hari ) adalah yang paling rendah ( 6,86 % ), disusul kemudian T2 ( 8,93 % ), T1 (13,31 % ) dan T0 ( 14,14 % ). Sedangkan kadar selulosa tertinggi dicapai oleh perlakuan T3 yaitu sebesar 27,64 %, kemudian disusul oleh T2 (27,19 %), T1 sebesar 26,57 % dan yang paling rendah adalah T0 (26,10 %). Kesimpulan dari penelitian ini adalah bahwa fermentasi jerami padi menggunakan MA-11 selama 2 – 6 hari dapat menurunkan kadar libnin dan meningkatkan kadar selulosa. Fermentasi selama 6 hari menunjukkan kadar lignin yang terrendah dan kadar selulosa yang tertinggi..Kata kunci: fermentasi, MA-11, lignin, selulosa
INOVASI BATIK MANGROVE BREBESAN SEBAGAI DASAR PENGUATAN BUDAYA LOKAL KABUPATEN BREBES
Authors: Adita M Dini , Randi Mohammad Jusuf
Published: September 2020

Batik merupakan budaya lokal Indonesia yang patut dilestarikan. Bermula dari identitas batik yang merupakan warisan budaya leluhur, muncul kreativitas dan inovasi dari masyarakat di pesisir pantai Kaliwlingi Desa Pandansari Kabupaten Brebes dalam menumbuhkan industri batik yang berbahan dasar dari tanaman mangrove yang banyak dibudidayakan di daerah tersebut. Industri tersebut mendapat dukungan penuh dari pemerintah di diberi label “Batik Mangrove Brebesan”. Tujuan dari penelitian ini adalah untuk 1) meningkatkan koordinasi antara perajin batik mangrove brebesan dalam menguatkan sentra batik mangrove brebesan untuk mendukung peningkatan Objek Wisata Dewi Mangrove Sari di Kabupaten Brebes dan 2) mengembangkan Objek Wisata Dewi Mangrove Sari di Kabupaten Brebes yang berbasis seni dan budaya lokal. Penelitian dilakukan dengan menggunakan metode pendekatan analisis deskriptif dan disertai dengan Discovery Learning and Development Model untuk merumuskan model pengembangan batik mangrove brebesan. Hasil penelitian menunjukkan bahwa pengembangan batik mangrove brebesan sangat erat kaitannya dengan pertumbuhan industri lokal dan kreatif serta mendorong timbulnya industri-industri sejenis di kawasan Objek Wisata Dewi Mangrove Sari di Kabupaten Brebes. Sentra industri batik mangrove brebesan akan menjadi daya tarik wisata yang tentunya akan meningkatkan minat wisatawan dalam berkunjung.Kata kunci: batik mangrove brebesan, inovasi, penguatan budaya
REALOKASI KARTU PRA KERJA DALAM MENDUKUNG INTENSIFIKASI SEKTOR PERTANIAN
Authors: Siregar Abi Pratiwa , Oktaviana Nadia
Published: September 2020

Seiring perkembangan pandemi COVID-19 di Indonesia, pemerintah mengeluarkan kebijakan Kartu Pra Kerja sebagai salah satu solusi dalam penanganan dampak COVID-19 dari aspek ketenagakerjaan. Anggaran senilai 20 triliun rupiah dinilai sangat besar dibandingkan dengan dampak yang akan dirasakan, khususnya pada saat seperti ini dimana para penyedia lapangan kerja cenderung membatasi rekrutmen pekerja baru atau bahkan merumahkan beberapa pekerjanya. Oleh karena itu, realokasi anggaran kartu pra kerja ke sektor pertanian dianggap alternatif yang tepat, mengingat sektor pertanian merupakan padat karya dan merupakan penyedia kebutuhan pokok masyarakat. Tujuan penelitian ini adalah: 1) melakukan kajian peran sektor pertanian terhadap pembangunan ekonomi di Indonesia, dan  2) melakukan simulasi terhadap realokasi anggaran kartu pra kerja untuk intensifikasi pertanian. Metode penelitian ini adalah deskriptif analitis menggunakan data sekunder yang berasal dari Badan Pusat Statistik dan Kementerian Pertanian.  Hasil penelitian menunjukkan bahwa sektor pertanian memiliki kontribusi relatif besar terhadap pendapatan domestik bruto dan penyerapan tenaga kerja. Lebih lanjut, hasil simulasi realokasi anggaran menggambarkan bahwa kebijakan mengalihkan beberapa pos anggaran kartu pra kerja untuk intensifikasi pertanian merupakan hal tepat, terutama dalam kaitannya efektifitas penyerapan tenaga kerja dan penyaluran bantuan, serta untuk menjaga ketersediaan bahan pangan di masyarakat.Kata kunci: COVID-19, intensifikasi pertanian, kartu pra kerja, pengangguran, realokasi anggaran
Keefektifan Model Pembelajaran Index Card Match Terhadap Hasil Belajar Matematika Materi Kecepatan Kelas V SDN 4 Kemujan Kecamatan Karimunjawa Semester I Tahun Pelajaran 2019/2020
Authors: Sudarmaji S
Published: September 2020

Masalah yang ingin dipecahkan dalam Penelitian Tindakan Kelas; ”Bagaimanakah keefektifan  model pembelajaran Index Card Match terhadap hasil belajar Matematika materi kecepatan pada siswa kelas V SDN 4 Kemujan  Kecamatan Karimunjawa semester I tahun pelajaran 2019/2020? Tujuan Penelitian Tindakan Kelas ini adalah untuk mengetahui keefektifan model pembelajaran Index Card Match terhadap hasil belajar Matematika pada siswa kelas V SDN 4 Kemujan  Kecamatan Karimunjawa semester I tahun pelajaran 2019/2020. Penelitian dilaksanakan di SDN 4 Kemujan Kecamatan Karimunjawa Kabupaten Jepara semester I tahun pelajaran 2019/2020. Obyek penelitian peserta didik kelas V. Lokasi di SDN 4 Kemujan Kecamatan Karimunjawa Kabupaten Jepara, karena peneliti merupakan Kepala SDN 4 Kemujan. Pelaksanaan penelitian ini mengikuti model yang dikembangkan oleh Kemmis dan MC.Tanggart berupa siklus spiral yang terdiri dari 4 tahap: (1) perencanaan tindakan kelas, (2) pelaksanaan tindakan kelas, (3) observasi tindakan kelas, dan (4) refleksi, yang diikuti siklus spiral berikutnya. Penerapan model pembelajaran Index Card Match membawa dampak berupa meningkatnya hasil belajar dan prestasi belajar siswa. Peningkatan hasil belajar siswa dapat dilihat hasil pada prasiklus yang tuntas 10 siswa (52,63%) dan yang belum tuntas 9 siswa (47,37%). Nilai rata-rata kelas 65,79. siklus I pertemuan 1 yang tuntas 12 siswa (63,16%). Nilai rata-rata kelas 69,47. Siklus 1 pertemuan 2 terjadi peningkatan ketuntasan sebesar 10,52%  dari 63,16%  siklus I pertemuan 1 menjadi 73,68%  siklus I pertemuan 2. Siswa yang tuntas 14 siswa (73,68%). Siklus II pertemuan 1 hasil prestasi belajar siswa meningkat 5,27% dari 73,68% siklus I pertemuan 2 menjadi 78,95% siklus II pertemuan 1. Siklus II pertemuan 2 hasil prestasi belajar  siswa meningkat  sebesar 15,79% dari  78,95%  siklus II pertemuan 1 menjadi 94,74% siklus II pertemuan 2. Siswa yang tuntas 18 siswa ( 94,74%) dan  yang belum tuntas 1 siswa ( 5,26%). Nilai rata -rata kelas 78,95.
Peningkatan Aktivitas dan Hasil Belajar Matematika Materi Barisan dan Deret Melalui Pendekatan SAVI Bagi Siswa Kelas XI IPS1 SMA Negeri 1 Tawangsari Semester 2 Tahun Pelajaran 2018/2019
Authors: Suratno .
Published: September 2020

Penelitian ini merupakan Penelitian Tindakan Kelas, yang bertujuan untuk aktivitas dan hasil belajar melalui pendekatan pembelajaran Somatis, Auditori, Visual, Intelektual. Subyek penelitian adalah siswa kelas XI IPS1 SMA Negeri 1 Tawangsari semester 2 yang berjumlah 36 siswa. Teknik pengumpulan data dengan menggunakan metode tes tertulis, observasi,  dokumentasi. Adapun prosedur penelitian dilakukan melalui dua siklus dan setiap siklus terdiri dari perencanaan, pelaksanaan, observasi dan refleksi. Hasil penelitian: (1) terjadi peningkatan aktivitas belajar siswa bila dibandingkan antara prasiklus  yaitu nilai rata-rata 1,86 (kurang) di akhir siklus 2 menjadi 4,03 (baik); (2) terjadi peningkatan pencapaian ketuntasan belajar  siswa bila dibandingkan antara prasiklus  yaitu 6 siswa (25 %) di akhir siklus 2 menjadi 31 siswa (91,67 %) sehingga sudah mencapai tingkat ketuntasan sebagaimana telah ditetapkan yaitu ? 85%. Terjadi peningkatan pencapaian nilai rata-rata bila dibandingkan antara prasiklus 57,11 di akhir siklus 2 menjadi 83,61. Simpulan penelitian ini bahwa penerapan pendekatan SAVI dapat meningkatkan aktivitas siswa dan hasil belajar matematika materi barisan dan deret.
基于大数据可视化的建筑砂石监测预警系统设计与应用
Authors: 陈 坤 , 毛 华锐
Published: September 2020

当前,我市砂石供需矛盾较为突出,已成为影响交通建筑行业发展的重大民生问题,特别是今年的新冠疫情爆发后,为更好地协调建筑砂石矿山复工复产,保障砂石供应,稳定市场价格。通过移动互联网、大数据可视化等新一代信息化技术,形成集采集、监测、分析预警为一体的信息系统,本文结合重庆市建筑砂石管理实际,阐述建筑砂石监测预警系统的设计与实现,通过该系统实现对大数据的管理和信息挖掘,促进砂石管理精细化,并对未来发展趋势展开了探讨。
一种新型物化组合工艺对水产养殖废水处理效果的研究
Authors: 张 文凯 , 徐 笑眉 , 任 亮亮 , 廖 国刚 , 田 海洋
Published: September 2020

本文研究了一种新型物化组合工艺对水产养殖废水的处理效果；PAC最佳添加量为40 mg.L-1,PAM最佳添加量为2 mg.L-1,NaClO最佳添加量为30mg.L-1；实验用的水产养殖废水COD、氨氮和总磷含量分别为100-140mg.L-1、2.5-3.5mg.L-1和1.2-1.6mg.L-1之间；该工艺技术可以稳定的将废水中的COD、氨氮和总磷削减到50mg.L-1、1.0mg.L-1和0.3mg.L-1以内,平均去除率分别为63.33%、72.32%和83.50%。
水处理工程项目安全管理中PDCA循环的应用
Authors: 王 恬 , 张 新培
Published: September 2020

PDCA循环可以辨别水处理工程项目中的危险源,对危险源进行合理控制,同时还可以预防安全事故,在实际应用中取得的效果十分良好。该种安全管理模式可以对企业所有部门和活动进行全面覆盖,在生产岗位上也可以进行具体落实。水处理工程项目中,PCDA方法的应用可以对人为因素进行有效控制,减少违规操作情况的出现。本文主要研究PCDA循环在水处理工程项目中的应用,对安全管理特点进行分析,同时对水处理工程项目的实际情况,希望对PDCA循环的进一步应用和发展具有积极作用。
林业工程造林的方法及措施
Authors: 孙 际葳
Published: September 2020

森林资源是直接关系到林业经济发展的一种重要资源,并且与人们生存发展的生态环境之间的关系十分的紧密。因此,我们需要不断地对其进行整合以及开发,以确保在最大程度上对森林资源进行管理以及保护。为了更好地保证林业资源的可持续发展我们就必须重视起林业工程当中的造林工作,因此,我们需要根据实际的情况来选择更加合适的造林方法进行造林,最大程度上节约造林所需要耗费的成本,对森林资源有规划的进行保护,这也对树种以及植被的多样性发展有着十分重要的意义。
生态环境保护工程中的污水处理
Authors: 罗 丽华
Published: September 2020

自从进入21世纪以来,我国城市化进程越来越快,人们的素质不断提高,环保意识以此也得到了极大的提高。尤其是改革开放以来,由于对经济发展的重视,导致我们对自然过度开发,在经济发展的同时,忽略了对环境的保护,导致城市水污染严重,而且随着时间的累积,污水处理变得越来越难,越来越麻烦。众所周知,水是生命的源泉,因此我国对环保工程中污水处理十分重视,并致力于研究如何高效处理污水,基于此,这篇文章我们对环保工程中污水处理工程的工艺与方法进行了深入探讨,并对此提出许多具体有效的建议,希望以此来提高我国环保工程中污水处理的技术水平。
A espiritualidade no contexto da ciência da Saúde
Authors: Gerone Lucas Guilherme Teztlaff de
Published: September 2020

Contexto: A investigação acadêmica sobre espiritualidade e saúde tem sido temas das pesquisas nas áreas da saúde e da religião. Contudo, pouco se trata da espiritualidade em uma perspectiva da relação entre a religião com os profissionais da saúde. Objetivos: O presente estudo apresenta uma reflexão sobre a espiritualidade e saúde. Especificamente, busca evidenciar: a) a relação entre a religião e ciência da saúde; b) a relação entre a religião cristã e a saúde; c) e a tradição cristã e os profissionais da saúde. Método: Uma referência teórica sobre a espiritualidade no contexto de saúde. Resultados: a) existem associações etimológicas entre a espiritualidade e a saúde; b) a ciência religiosa sempre se atentou para a temática da saúde; c) A ideologia da religião cristã sobre a saúde estende-se no decorrer da história; d) encontra-se a influência da tradição cristã na prática do cuidado entre os profissionais da saúde. Considerações: a) Considera-se que a religião está associada e historicamente com a saúde, b) considera-se que existe uma relação entre espiritualidade e saúde no sentido etimológico e na prática do cuidado em saúde; c) considera-se que a tradição religião cristã influenciou o contexto em saúde, tais como, a prática do cuidado entre os profissionais. Considere-se a importância de novas pesquisas sobre a espiritualidade e a saúde em outras óticas religiosas, tais como, o espiritismo.
A espiritualidade e a moral na prática do docente
Authors: Gerone Lucas Guilherme Teztlaff de , Bataglia Patricia Unger Raphael
Published: September 2020

Contexto: A investigação científica sobre o desenvolvimento moral na educação tem ganhado espaço nas rodas de debates e nas pesquisas acadêmicas, contudo, há poucos estudos que abordam a espiritualidade como uma dimensão do desenvolvimento moral considerando especialmente a área de educação. Objetivos: No presente estudo aborda-se a espiritualidade no desenvolvimento moral, especificamente na prática do docente. O embasamento teórico será fundamentado em Piaget, Kohlberg e Fowler sobre o desenvolvimento moral, religioso e da fé. Resultados: 1) existe uma relação etimológica entre a espiritualidade, o desenvolvimento moral e o docente; 2) existe uma relação histórica entre a espiritualidade-religião, a moral e a educação. Percebe-se uma relação entre a espiritualidade, a moral e prática do docente na busca de uma educação integral e humana, as questões morais e espirituais são indispensáveis; na compreensão dos valores e direitos humanos; como um recurso (coping) para o docente encontrar sentido e propósito profissional e pessoal; no ensino religioso encontram-se valores humanos com efeitos morais como, o respeito, a fraternidade, a solidariedade, o bem-estar. Considerações: A contribuição da psicologia da educação para reflexão da espiritualidade, a moral e o docente, tais como, nos significados etimológicos, na busca do conhecimento e sentido-proposito da vida; como um recurso coping espiritual no contexto educacional. Faz-se necessário a continuidade de novas pesquisas que analisem a influência da espiritualidade e da religião no desenvolvimento moral na prática do docente, tais como, na competência moral, em métodos de formação contínua, na prática do ensino moral e religioso, e na construção das virtudes morais.
Analisis Perhitungan Overall Equipment Effectiveness Guna Mengurangi Six Big Losses dan Upaya Perbaikan Dengan Pendekatan Kaizen 5S
Authors: Rahayu Rd Roro Dian , Husniah Hennie , Herdiani Leni
Published: September 2020

KHSTEX saat ini sedang menghadapi kendala pada kualitas produk kain greyyang tidak sesuai dengan standar yang diharapkan. hal ini dapat berdampak buruk pada perusahaan sehingga akan menyebabkan ongkos produksimeningkat, keuntungan menurun, dan loyalitas pelangganpun ikut menurun apabila kualitas produk tidak diperhatikan oleh perusahaan. Dari perhitungan OEE tingkat efektivitas mesin palet menurut standart wordclass bisa dikatakan belum baik hal ini bisa dilihat dari perolehan nilai OEE dengan rata-rata persentase sebesar 71,8% dimana menurut standar word class dianggap efektif apabila berada diatas 85%, artinya kinerja dari mesin palet pada bulan september belum maksimal. Jenis Six Big Losses yang dominan pada mesin palet yaitu defect losses dan reduced speed losses. defect losses memiliki nilai sebesar 11,49% dan persentase terhadap losses lain yaitu sebesar 84,29%. Sedangkan reduce speed losses memiliki nilai sebesar 13,79 % dan persentase terhadap losses lain sebesar 45,97%.
Identifikasi dan Toleransi Kemasaman Mesofauna Indigenous Tanaman Lada untuk Pertumbuhan Bibit Lada (Piper nigrum L.)
Authors: Santi Ratna , Gusmaini Gusmaini , Sarwendah Mamik
Published: September 2020

Rendahnya kesuburan tanah di Bangka menjadi permasalahan utama dalam pola budidaya lada secara menetap. Pemanfaatan mikro dan mesofauna berperan dalam dekomposisi bahan organik, memperbaiki struktur tanah, daur ulang hara dan mengurangi kehilangan hara. Penelitian ini bertujuan mengidentifikasi potensi mesofauna isolasi dibawah tegakan lada dalam memacu pertumbuhan bibit lada. Tahapan awal kegiatan yaitu identifikasi dan analisis kelimpahan mesofauna contoh tanah yang diambil dari Bangka induk dan Bangka Selatan sebagai sentra produksi tanaman lada. Uji potensi toleransi kemasaman mesofauna dengan menumbuhkan bibit lada secara pot sistem pada tingkat kemasaman media yang berbeda. Hasil penelitian menunjukkan mesofauna yang diperoleh jenis Acari dan Collembola dari famili Neanuridae, Isotomidae, Hypogastruridae, Entomobrydae, Sminthuridae, Mesotigmata, Cyphoderidae. Berdasarkan toleransi terhadap pH mesofauna yang teridentifikasi adalah golongan indifferen yang hidup pada kondisi asam dan basa. Mesofauna mampu memperbaiki kesuburan tanah ditunjukkan dengan meningkatnya kandungan C-organik, hara makro P, K, pH tanah dan aerasi tanah. Perbaikan kimia tanah dan porositas tanah akan memacu perkembangan akar dan pertumbuhan bibit lada.
石油工程技术创新策略探讨
Authors: 袁 鸣 , 顾 伟 , 邓 军
Published: September 2020

石油作为建设发展的基础，其对国家发展和国家安全的重要性不言而喻。当前石油建设工程的数量随着社会发展需求的提升与日俱增,鉴于石油建设工程较高的专业系数和复杂性,只有多方重视和协调石油工程技术的创新应用管理,才能促进石油工程的保质保量建设。科学合理、与时俱进的石油工程技术对石油工程建设质量的保证和施工效率的提升具有极大意义。
浅述采矿工程中的采矿技术与施工安全
Authors: 刘 曙杰
Published: September 2020

从我们国家采矿工程的现状来看，采用的开采技术不够先进，对安全管理的重视程度也较低，这就使得开采效率变得较为低下，发生危险事故的几率大幅增加。在展开矿产工程建设时，所要面对的地质环境是较为特殊的，因而要确保选择的采矿技术是最为合适的，并要将施工安全能够切实做到位。采矿环境是较为复杂的，而且呈现出多变性，这就导致采矿事故难以得到根除，采矿安全、质量也是无法保证的。若想保证采矿技术能够切实提升，施工安全得到保证，必须要对矿业工程建设予以重点关注，这样方可使得采矿企业保持稳健的发展态势。
论煤矿采煤技术的发展与采煤自动化技术
Authors: 王 德超
Published: September 2020

在社会快速发展的带动下，使得科学技术得到了显著的发展进步，并且也为各个领域的发展带来了良好的机遇。自动化技术是科学技术发展的产物，因为具有良好的优越性，所以受到了人们的广泛关注被引用到了多个领域之中，并取得了非常显著的成效。将自动化技术运用到煤炭生产行业之中，能够有效的提升煤炭生产量的提升，在煤矿自动化水平不断提升的带动下，使得计算机技术也随之逐渐的发展，煤矿企业在进行信息化建设的时候，扩展采煤技术的自动化水平也是其中一项较为关键的内容。从某种层面上来看，采煤技术的水平能够反映出煤矿企业现代化发展的状况。电气自动化技术在整个煤矿企业运营中所具有的作用是非常重要的，并且也在煤炭生产中起到了关键的影响作用。借助自动化技术，在采矿、挖掘、运输等多个环节中辅助生产，有效的提升煤矿生产工作的整体水平。
城市道路与桥梁常见病害与防护措施
Authors: 马 东海
Published: September 2020

社会经济的发展建设在很大程度上推动了我国道桥工程的发展，由于各方面的原因，道桥工程病害问题普遍存在，比如道桥地基的不均匀沉降、道桥工程的桥面裂缝、道桥工程钢筋发生锈蚀等，据此，我们要加大对道桥工程常见病害防治措施的分析探究力度，采取有效措施提升道桥工程病害防治工作有效性。
装配式建筑施工技术在建筑工程施工管理中的应用分析
Authors: 李 季
Published: September 2020

近年来，我国加大了改革开放的力度，从而推动了社会经济的飞速发展，为各个领域的发展壮大带来了良好的机遇，在这种形势下建筑工程行业得到了快速的发展壮大，使得大量新型工程施工方式和施工技术被研发出来，并且在时间运用中取得了良好的效果。装配式建筑是当前最为先进的一种建筑模式，其实质就是在工厂内对部分建筑结构进行建造，并将建造完成的结构部件运送到施工现场加以组装，最终形成完整的工程结构。因为在建筑部件运送到施工现场之后，安装工作通常是运用浇筑的形式来完成，所以就建筑结构外观来看与以往传统模式建造的工程结构是一样的。就装配式建筑与传统模式建筑相对比来说，其能够有效的提升施工效率，最大限度的降低施工过程中的各类资源的使用量，并且在工厂内进行建筑部件的生产，可以有效的避免对环境造成污染，对于施工现场管理工作的有序开展也能够起到积极的影响作用。
环境检测在生态环境保护中的作用及发展措施
Authors: 王 嵩 , 台 文 , 郑 浩 , 陶 娟 , 李 远鹏
Published: September 2020

近年来，在社会快速发展的影响下，使得民众思想意识出现了明显的变化，人们对环境保护工作越发的重视，所以我们需要将环境检测工作在环境保护中的作用充分的发挥出来，促进我国环境保护工作能够得以良好发展。环境检测工作能够有效的规避环境污染情况的发生，如果环境检测报告中存在污染但是没有对环境产生严重的污染影响的时候，可以综合实际情况选择恰当的方式方法来对污染问题加以控制和解决。工作人员需要综合环境污染地区环境检测报告来编制针对性的解决方案，保证实现环境治理的目标。
光伏智能微电网的电压频率分层控制策略研究
Authors: 马 尚行 , 沈 英达 , 戴 永军
Published: September 2020

随着科学技术的发展，人们对于电力的需求不断增大，光伏发电作为新能源的一种，能够为人们生产生活提供一定的能源支持。文章主要介绍了微电网的系统级控制，并且简要分析了微电网微源控制方案，提出了两点有效策略，为提升光伏智能微电网的电压频率分层控制工作做出相应的研究，供相关工作人员借鉴分析。
ETC门架监控控制器在取消高速公路省界收费站的应用
Authors: 杨 家海
Published: September 2020

在国务院面向高速公路所处取消省界收费站的当下，围绕该政策落实所带来影响展开的讨论不断增加。文章便以此为背景，从公路收费所表现出特点出发，先对ETC门架系统被提出的原因进行了分析，在此基础上，针对控制器的实际应用展开了讨论，内容涉及系统架构、安全防范等方面，希望能够给相关人员以启发，使日后所开展工作拥有可供参考的资料。
Beyond hybridization: the genetic impacts of nonreproductive ecological interactions of salmon aquaculture on wild populations
Authors: Bradbury IR , Burgetz I , Coulson MW , Verspoor E , Gilbey J , Lehnert SJ , Kess T , Cross TF , Vasemägi A , Solberg MF , Fleming IA , McGinnity P
Published: September 2020

Cultured Atlantic salmon Salmo salar are of international socioeconomic value, and the process of domestication has resulted in significant behavioural, morphological, and allelic differences from wild populations. Substantial evidence indicates that direct genetic interactions or interbreeding between wild and escaped farmed Atlantic salmon occurs, genetically altering wild salmon and reducing population viability. However, genetic interactions may also occur through ecological mechanisms (e.g. disease, parasites, predation, competition), both in conjunction with and in the absence of interbreeding. Here we examine existing evidence for ecological and non-reproductive genetic interactions between domestic Atlantic salmon and wild populations and the potential use of genetic and genomic tools to resolve these impacts. Our review identified examples of genetic changes resulting from ecological processes, predominately through pathogen or parasite transmission. In addition, many examples were identified where aquaculture activities have either altered the selective landscape experienced by wild populations or resulted in reductions in population abundance, both of which are consistent with the widespread occurrence of indirect genetic changes. We further identify opportunities for genetic or genomic methods to quantify these impacts, though careful experimental design and pre-impact comparisons are often needed to accurately attribute genetic change to aquaculture activities. Our review indicates that ecological and non-reproductive genetic interactions are important, and further study is urgently needed to support an integrated understanding of aquaculture-ecosystem interactions, their implications for ecosystem stability, and the development of potential mitigation and management strategies.
Commercial viability of locating pelagic longline branchline weights at the hook to reduce seabird bycatch
Authors: Gilman E , Beverly S , Musyl M , Chaloupka M
Published: September 2020

Bycatch in pelagic longline fisheries threatens the viability of some seabird populations and reduces fishing efficiency. The mass of a branchline fishing weight and its distance from the hook significantly explain seabird catch risk during setting and hauling. We surveyed Hawaii tuna longline fishers to obtain their perspectives on the practicality, safety and economic viability of alternative designs which place weights adjacent to hooks instead of conventional designs with weighted swivels attached 0.6 m from the hook. We conducted experimental fishing to explore the commercial viability of a combination weighted swivel attached to the eye of the hook. We used a Bayesian random effects meta-analytic regression modeling approach to estimate pooled expected species-specific log relative risk of capture on conventional, as opposed to experimental, branchlines. There were significant decreases in catch rates on experimental branchlines of 54% (95% highest posterior density interval [HDI]: 34.3 to 73.8) for retained species and 28% (95% HDI: -7.5 to 93.3) for discarded species. For about 10% of experimental weighted hooks, the point of the hook tangled on the swivel, likely contributing to lower catch rates and making it more difficult for crew to coil branchlines. We identify possible factors explaining why the experimental gear reduced catch rates. The study demonstrates the benefits of stakeholder scoping to determine bycatch mitigation options with the highest promise for practicality, economic viability and safety, as well as benefits of conducting a pilot study to assess commercial viability to determine if a full experiment to assess bycatch mitigation efficacy is warranted.
Unwanted Side Reactions as a Relevant Problem of Fundamental and Clinical Pharmacology
Authors: Litvinenko T. S. , Safronenko A. V. , Gantsgorn E. V. , Dyatchina L. I. , Zamlelaya I. V. , Myakota I. M. , Bystrovsky V. O.
Published: September 2020

The article is devoted to a topical issue in pharmacology, i.e. undesirable side reactions. Modern ideas about the possible causes of their occurrence and prevalence in the world are presented. The main problems and corresponding tasks of developing the pharmacovigilance system in Russia are outlined.
Information Algorithm for Non-Invasive Evaluation of Osteoresorbable Side Effects of Glucocorticosteroids in Patients with Ulcerative Colitis
Authors: Safronenko A. V. , Kosenko V. A. , Demidova A. A. , Demidov I. A. , Sukhorukova N. V. , Gantsgorn E. V.
Published: September 2020

A study involving 45 patients with ulcerative colitis found that the activity of the Cathepsin K bone resorption marker measured by an enzyme-linked immunosorbent assay in gingival ﬂuid could be used as a non-invasive control over the development of steroid osteoporosis caused by systemic use of glucocorticoids. When the concentration of Cathepsin K in the gingival ﬂuid exceeded 3.7 pmol/L, the risk of developing osteoporosis in patients with ulcerative colitis taking glucocorticosteroids on a regular basis increased by 7.9 times with a diagnostic accuracy of 82.6% (p=0.002). As a result of the study, an effective method for non-invasive assessment of osteoresorbable side effects of glucocorticosteroids in autoimmune diseases was proposed.
Bioinformation Algorithm for Selecting a Method for Premedication of Patients with Arterial Hypertension with Amiodarone-Associated Thyrotoxicosis Type I during Neurosurgical Operations
Authors: Safronenko A. V. , Lepyavka S. V. , Demidova A. A. , Demidov S. I. , Nazheva M. I. , Krishtopa A. V.
Published: September 2020

Signs associated with adverse cardiovascular reactions after surgery were established in 46 patients with arterial hypertension, cardiac arrhythmias and type I amiodarone-associated thyrotoxicosis. These signs included an increase in the circadian index above 1.52, the presence of pauses in the heart rate for more than 3 seconds, the number of group ventricular extrasystoles per day exceeding 30, an increase in LF/HF with RR-intervalometry more than 1.3. In order to reduce the risk of cardiac arrhythmias in the postoperative period, a premedication with long-acting benzodiazepines in combination with magnesium preparations over a prolonged course is recommended.
SISTEM PENDUKUNG KEPUTUSAN PEMILIHAN RUMAH SAKIT DENGAN PELAYANAN RAWAT INAP TERBAIK
Authors: Mustika Mentari  , Dewi Chintya Puspa
Published: September 2020

Rumah sakit adalah tempat pelayanan kesehatan yang pasti sangat diperlukan oleh masyarakat.Pelayanan tersebut dilihat dari efisiensi, sarana dan prasarana yang memadai, dan faktor lainnya. Efisiensi pelayanan rawat inap juga termasuk hal yang penting bagi pasien, khususnya yang harus dirawat di rumah sakit. Pihak rumah sakit melakukan sensus harian untuk meninjau dan meningkatkan kualitas pelayanan rawat inap. Kriteria pelayanan rawat inap adalah BOR (Bed Occupancy Ratio), BTO (Bed Turn Over), TOI (Turn Over Interval), dan AVLOS (Average Length of Stay). Untuk kemudahan dalam memilih, maka dibutuhkan sistem pendukung keputusan sebagai alat. Rumah sakit yang akan dijadikan pilihan oleh peneliti adalah rumah sakit yang ada di wilayah Kota Batu. Metode yang digunakan adalah gabungan SAW (Simple Additive Weighting) dan TOPSIS (Technique For Order Preference By Similiarity To Ideal Solution). Metode ini dipilih karena menggunakan persamaan matematis yang lebih sederhana untuk mendapatkan solusi terbaik. Hasil pengujian dapat digunakan untuk membantu masyarakat dalam pemilihan rumah sakit.
R2D2: A Dbpedia Chatbot Using Triple-Pattern Like Queries
Authors: Kondylakis Haridimos , Tsirigotakis Dimitrios , Fragkiadakis Giorgos , Panteri Emmanouela , Papadakis Alexandros , Fragkakis Alexandros , Tzagkarakis Eleytherios , Rallis Ioannis , Saridakis Zacharias , Trampas Apostolos , Pirounakis Giorgos , Papadakis Nikolaos
Published: September 2020

Chatbots, also known as conversation agents, are programs that are able to simulate and reproduce an intelligent conversation with humans. Although this type of program is not new, the explosion of the available information and the rapid increase of the users seeking this information have renewed the interest in their development. In this paper, we present R2D2, an intelligent chatbot relying on semantic web technologies and offering an intelligent controlled natural language interface for accessing the information available in DBpedia. The chatbot accepts structured input, allowing users to enter triple-pattern like queries, which are answered by the underlying engine. While typing, an auto-complete service guides users on creating the triple patterns, suggesting resources available in the DBpedia. Based on user input (in the form of triple-pattern like queries), the corresponding SPARQL queries are automatically formulated. The queries are submitted to the corresponding DBpedia SPARQL endpoint, and then the result is received by R2D2 and augmented with maps and visuals and eventually presented to the user. The usability evaluation performed shows the advantages of our solution and its usefulness.
An Efficient Case Retrieval Algorithm for Agricultural Case-Based Reasoning Systems, with Consideration of Case Base Maintenance
Authors: Zhai Zhaoyu , Ortega José-Fernán Martínez , Martínez Néstor Lucas , Xu Huanliang
Published: September 2020

Case-based reasoning has considerable potential to model decision support systems for smart agriculture, assisting farmers in managing farming operations. However, with the explosive amount of sensing data, these systems may achieve poor performance in knowledge management like case retrieval and case base maintenance. Typical approaches of case retrieval have to traverse all past cases for matching similar ones, leading to low efficiency. Thus, a new case retrieval algorithm for agricultural case-based reasoning systems is proposed in this paper. At the initial stage, an association table is constructed, containing the relationships between all past cases. Afterwards, attributes of a new case are compared with an entry case. According to the similarity measurement, associated similar or dissimilar cases are then compared preferentially, instead of traversing the whole case base. The association of the new case is generated through case retrieval and added in the association table at the step of case retention. The association table is also updated when a closer relationship is detected. The experiment result demonstrates that our proposal enables rapid case retrieval with promising accuracy by comparing a fewer number of past cases. Thus, the retrieval efficiency of our proposal outperforms typical approaches.
Monitoring of the PAL Enzymatic Activity and Polyphenolic Compounds in Leaves and Fruits of Two Myrtle Cultivars during Maturation
Authors: Medda Silvia , Dessena Leonarda , Mulas Maurizio
Published: September 2020

The leaves and berries of myrtle (Myrtus communis L.) are rich in phenolic compounds, such as phenolic acids, flavonoids, and flavanols. The richness of these antioxidant compounds allows the potential use of myrtle biomasses as raw materials for medicinal and functional food products. Most of the phenolic compounds originate from the phenylpropanoid pathway, where phenylalanine ammonia lyase (PAL) enzyme activates the first step. The objective of this research is to study the activity of PAL as related to accumulation in the myrtle fruits and leaves of some phenolic compounds in the period between blossom and full berry ripening. With this aim, we compared two model genotypes with different fruit coloration. In leaves and berries of two cultivars, ‘Giovanna’ with pigmented berries and ‘Grazia’ with white berries, the PAL activity and content of polyphenols, anthocyanins, flavonoids, and tannins were determined with spectrophotometric methods. PAL activity was quite constant in leaves and variable in berries: Greater in berries of ‘Giovanna’ than in those of ‘Grazia’ cultivar, and increasing from berry color-break to full ripening. In berries, a positive correlation between PAL and flavonoids (r = 0.44), and between PAL and anthocyanins (r = 0.69), as well as a negative correlation between PAL and total polyphenols (r = −0.471), were found.
Development of Functional High-Protein Organic Bars with the Addition of Whey Protein Concentrate and Bioactive Ingredients
Authors: Szydłowska Aleksandra , Zielińska Dorota , Łepecka Anna , Trząskowska Monika , Neffe-Skocińska Katarzyna , Kołożyn-Krajewska Danuta
Published: September 2020

The study aimed to develop the high-protein bars using organic ingredients such as whey protein concentrate (WPC), prebiotic-inulin, as well as pro-health additives (dried fruits, cereals, and nuts). The physicochemical, microbiological, sensory, and consumer evaluation of ingredients and final products were made. The musli (M), pumpkin (P), and coconut (C) bars were developed including three different flavors for each bar. The novel products were found to be a good source of protein and fiber. The M and P3 bar samples contained >10 g of fiber/100 g of product. The M and C bars contained over 20 g/100 g proteins in total, while P bars contained 17.3–19.1 g/100 g of protein. The antioxidant activity of bars was proportional to the fruit content. The water activity was varied (0.63–0.74), while pH value ranged from 6.3 to 7.0. Microbiological quality of ingredients and bars were good, though in M and P bars, the presence of Bacillus cereus was found. The C bars found the highest marks of the overall quality. The newly developed high-protein products can be used in rational nutrition of a wide group of people who are health-conscious.
Economic Efficiency in the Tunisian Olive Oil Sector
Authors: Fernández-Uclés Domingo , Elfkih Saida , Mozas-Moral Adoración , Bernal-Jurado Enrique , Medina-Viruel Miguel Jesús , Abdallah Saker Ben
Published: September 2020

This study aims to assess the economic efficiency of Tunisian olive oil firms in order to identify the organizational and technological variables that are directly associated with greater efficiency. The Data Envelopment Analysis (DEA) and fuzzy sets Qualitative Comparative Analysis (fsQCA) method were used to achieve this. We find the managing director’s education level and information and communication technologies (ICT) training, the longevity of the company in inverse relationship with efficiency, the company’s presence on and use of virtual social networks, and the outsourcing of ICT management in combination have significant explanatory power in the companies that display greater economic efficiency.
Effects of Sublethal Doses of Methyl Benzoate on the Life History Traits and Acetylcholinesterase (AChE) Activity of Aphis gossypii
Authors: Mostafiz Md Munir , Alam Md Badrul , Chi Hsin , Hassan Errol , Shim Jae-Kyoung , Lee Kyeong-Yeoll
Published: September 2020

Safer alternatives to synthetic pesticides are essential for sustainable agriculture. Methyl benzoate (MB) is a volatile essential oil found in several plants. Recent reports of the toxicity of MB to arthropod pests suggest that MB may be a useful alternative insecticide. The present study assessed the effects of a sublethal concentration of MB (LC30, 0.22%) on the life history and reproductive characteristics of the cotton aphid, Aphis gossypii Glover, in both a treated parental generation (F0) and untreated progeny (F1). MB treatment significantly decreased longevity and fecundity in both the F0 and F1 generations, and prolonged the developmental duration of each immature instar of the F1 generations, compared with controls. The intrinsic rate of increase (r), finite rate of increase (λ), and net reproductive rate (R0) of the F1 generation were significantly reduced, compared to controls. The mode of action of MB is not known, but in aphids treated with LC30 MB, the activity of the enzyme acetylcholinesterase (AChE) decreased by more than 65%, compared with untreated controls. AChE activity was rapidly inhibited within 1 h, and remained inhibited for 6 h after in vivo exposure to MB. Moreover, molecular docking analysis revealed that MB had a strong affinity with the catalytic site of AChE, with a binding energy value of −6.2 kcal/mole. Our results suggest that MB targets AChE, and that a sublethal dose of MB can have adverse transgenerational effects on cotton aphids.
Agricultural Soil Organic Matters and Microbiome Are Shaped by Management and Hedgerows
Authors: Sun Renhua , Song Chengjun , Sun Yuanze , Wang Qian , Liu Hongbin , Wang Jie
Published: September 2020

Despite the essential roles of soil dissolved organic matter (DOM) and soil microbes in agro-ecosystems, we still have a limited understanding of the extent by which they are impacted by agronomic strategies in ecological and conventional farming. Using three-dimensional fluorescence excitation–emission matrices (3D-EEM) and high-throughput microbial sequencing, the characteristics of soil DOM and microbiota under realistic field conditions were estimated in the farming soils with long-term ecological (EM) and conventional management (CM). Specifically, the role of hedgerows in the ecologically managed land (EMH) was assessed. The total fluorescent intensity of soil DOM in the EMH system was significantly higher than the values in CM and EM systems. Additionally, the five normalized excitation–emission area volumes from regional integration analysis increased in the order CM < EM < EMH. In comparison with CM and EM soils, the hedgerow significantly increased the evenness of the bacterial communities in the EMH system, whereas no differences were found for the alpha-diversity of eukaryotic communities. The composition of soil microbiota was significantly distinct among the three farming systems, with a hedgerow-specific effect on bacterial community and a management-specific effect on eukarya. The predicted functional profiles indicated that the hedgerow showed a higher contribution to the dissimilarity of bacterial functions. Furthermore, the distinction of the soil microbiota was modulated by the soil DOM composition and significantly positive correlations between the microbiota involved in nutrient cycling and soil DOM were observed. The findings in this work strengthen our understanding of the different responses of bacterial and eukaryotic communities under the long-term ecological management and highlight the beneficial roles of hedgerows in increasing organic matter and modulating community assembly.
RNA-Seq Reveals the Expression Profiles of Long Non-Coding RNAs in Lactating Mammary Gland from Two Sheep Breeds with Divergent Milk Phenotype
Authors: Hao Zhiyun , Luo Yuzhu , Wang Jiqing , Hu Jiang , Liu Xiu , Li Shaobin , Jin Xiayang , Ke Na , Zhao Mengli , Hu Liyan , Lu Yujie , Wu Xinmiao , Qiao Lirong
Published: September 2020

Long non-coding RNAs (lncRNAs) are a kind of non-coding RNA with >200 nucleotides in length. Some lncRNAs have been proven to have clear regulatory functions in many biological processes of mammals. However, there have been no reports on the roles of lncRNAs in ovine mammary gland tissues. In the study, the expression profiles of lncRNAs were studied using RNA-Seq in mammary gland tissues from lactating Small-Tailed Han (STH) ewes and Gansu Alpine Merino (GAM) ewes with different milk yield and ingredients. A total of 1894 lncRNAs were found to be expressed. Compared with the GAM ewes, the expression levels of 31 lncRNAs were significantly up-regulated in the mammary gland tissues of STH ewes, while 37 lncRNAs were remarkably down-regulated. Gene Ontogeny (GO) enrichment and Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis found that the target genes of differentially expressed lncRNAs were enriched in the development and proliferation of mammary epithelial cells, morphogenesis of mammary gland, ErbB signaling pathway, and Wnt signaling pathway. Some miRNA sponges of differentially expressed lncRNAs, reported to be associated with lactation and mammary gland morphogenesis, were found in a lncRNA-miRNA network. This study reveals comprehensive lncRNAs expression profiles in ovine mammary gland tissues, thereby providing a further understanding of the functions of lncRNAs in the lactation and mammary gland development of sheep.
In Silico Analysis of the Antigenic Properties of Iron-Regulated Proteins against Neisseria meningitidis
Authors: Rahman Md. Shahedur , Biswas Chayon , Biswas Polash Kumar , Kader Md. Ashraful , Alam S. M. Nur , Sonne Christian , Kim Ki-Hyun
Published: September 2020

Neisseria meningitidis is a commensal pathogen that causes infectious cerebrospinal disease in people of all ages. The multivariate role of six disease-causing polysaccharide serotypes is found to play a crucial role in developing vaccines (or general treatment strategies) to treat this emerging pathogen. Iron is a crucial transition metal for N. meningitidis. Proteomic analysis data could be valuable for vaccine design. Here, we conduct a comparative study using computational bioinformatic tools to identify the most effective iron-regulated outer membrane proteins (OMPs) as immunogenic targets for a potential vaccine against N. meningitidis. The basic properties of N. meningitidis OMPs are explored for flexibility, solubility, hydrophilicity, beta-turns, and overall antigenic probability. Results of our study suggest that iron-regulated OMPs are flexible and soluble in water with high densities of conformational B-cell epitopes. As such, they can be recommended as a novel candidate for a vaccine against N. meningitidis both in vitro and in vivo.
Ambient Vibration as a Basis for Determining the Structural Behaviour of Watchtowers against Horizontal Loads in Southeast Spain
Authors: Ruiz-Jaramillo Jonathan , Montiel-Vega Laura , García-Pulido Luis José , Muñoz-González Carmen , Blanca-Hoyos Álvaro
Published: September 2020

The Kingdom of Granada occupied the southeast of the Iberian Peninsula, what today would be the current Spanish provinces of Granada, Malaga and Almeria. Having succeeded the Nasrid kingdom of Granada (1238–1492), it remained a geographical and administrative unit until 1834, defended from the advancement of Castilian troops by means of a large network of watchtowers located principally along its inland border. Following the Castilian conquest of Granada, the extensive coastline was also strengthened with a network of towers and fortifications that were progressively adapted to house artillery. A technical survey focusing on the characteristics of their geometrics and construction, as well as their performance in a series of non-destructive tests, such as ambient vibration testing, was undertaken to study the towers’ mechanical strength against both gravitational and seismic loads. The results propose a numerical estimate that defines the fundamental frequency of this type of structure, which in turn can be used to approximate the mechanical properties of the masonry. Such a precise definition based on objective data enables accurate and rigorous numerical analysis of this defensive architecture, thus reducing uncertainties. Furthermore, slenderness is found to be a relevant parameter for adjusting fundamental frequency and for analysing the towers’ historical evolution, enabling their initial height and number of levels to be estimated.
Lightweight Detection Method of Obfuscated Landing Sites Based on the AST Structure and Tokens
Authors: Han KyungHyun , Hwang Seong Oun
Published: September 2020

Attackers use a variety of techniques to insert redirection JavaScript that leads a user to a malicious webpage, where a drive-by-download attack is executed. In particular, the redirection JavaScript in the landing site is obfuscated to avoid detection systems. In this paper, we propose a lightweight detection system based on static analysis to classify the obfuscation type and to promptly detect the obfuscated redirection JavaScript. The proposed model detects the obfuscated redirection JavaScript by converting the JavaScript into an abstract syntax tree (AST). Then, the structure and token information are extracted. Specifically, we propose a lightweight AST to identify the obfuscation type and the revised term frequency-inverse document frequency to efficiently detect the malicious redirection JavaScript. This approach enables rapid identification of the obfuscated redirection JavaScript and proactive blocking of the webpages that are used in drive-by-download attacks.
Testing and Fatigue Life Assessment of Timber Truck Stanchions
Authors: Lisowski Filip , Lisowski Edward
Published: September 2020

Components of transport trucks are subjected to dynamic cyclic loads. The magnitude of these loads depends on road conditions and cargo mass. Cyclic loads can cause fatigue failure at stress levels significantly below the yield strength of the material. When calculating fatigue, it is necessary to determine the actual loads acting on the structure under working conditions. In this study, stanchion displacements of overloaded timber trucks were measured under both static and dynamic loads. For the specified mass of timber, a history of dynamic loads acting on the stanchion was obtained. Then, based on the finite element analysis, stress concentration points were determined within the base material and welded joints of the stanchion. The history of maximum stresses at concentration points was determined. Stress ranges and mean stresses for the load history were calculated using the rainflow fatigue cycle counting method. Repeats to failure were determined on the basis of the Palmgren–Miner cumulative damage rule and the modified Goodman correction for the points with the highest stress level. Experimental investigation of the actual load history of the stanchion of significantly overloaded timber truck allowed to determine the mileage to potential failure.
A Detailed One-Dimensional Hydrodynamic and Kinetic Model for Sorption Enhanced Gasification
Authors: Beirow Marcel , Parvez Ashak Mahmud , Schmid Max , Scheffknecht Günter
Published: September 2020

Increased installation of renewable electricity generators requires different technologies to compensate for the associated fast and high load gradients. In this work, sorption enhanced gasification (SEG) in a dual fluidized bed gasification system is considered as a promising and flexible technology for the tailored syngas production for use in chemical manufacturing or electricity generation. To study different operational strategies, as defined by gasification temperature or fuel input, a simulation model is developed. This model considers the hydrodynamics in a bubbling fluidized bed gasifier and the kinetics of gasification reactions and CO2 capture. The CO2 capture rate is defined by the number of carbonation/calcination cycles and the make-up of fresh limestone. A parametric study of the make-up flow rate (0.2, 6.6, and 15 kg/h) reveals its strong influence on the syngas composition, especially at low gasification temperatures (600–650 °C). Our results show good agreement with the experimental data of a 200 kW pilot plant, as demonstrated by deviations of syngas composition (5–34%), lower heating value (LHV) (5–7%), and M module (23–32%). Studying the fuel feeding rate (22–40 kg/h), an operational range with a good mixing of solids in the fluidized bed is identified. The achieved results are summarized in a reactor performance diagram, which gives the syngas power depending on the gasification temperature and the fuel feeding rate.