bluuebunny/crossref_metadata_2025 huggingface dataset:
PENGARUH WAKTU PENGANGKUTAN ADUKAN BETON KE TEMPAT PENGECORAN TERHADAP KEKUATAN TEKAN
Authors: Zain Helwiyah
Published: July 2020

There is still a lot of casting concrete implementation which is mixing location was far with the casting location, because the situation in the field there are many obstacles to implement it.  As a result, from the mixing place to a casting place take a long time, so long as transportation there is a process of hydration in the concrete, which can cause a decrease in the quality of the concrete. To determine the decreasing of concrete quality, the research conducted is to determine the effect of time between when the mixing process of the concrete to casting process. This study used 48 specimens were divided into two groups, namely 24 specimens using the time difference without rotation and 24 pieces again with rotation. Each specimen using the same water cement ratio (fas), namely 0.45. Each group was subdivided in 6 variations in the time between mixing and casting namely :. 0 minutes, 12 minutes, 24 minutes, 36 minutes, 48 minutes and 60 minutes witch each variation using 4 specimens. The result of compressive strength each specimen group, for group I (without rotation) is 348 kg / cm2 for 0 minutes, 342 kg / cm2 for 12 minutes, 333 kg / cm2 for 24 minutes, 322 kg / cm2 for 36 minutes, 310 kg / cm2 for 48 minutes, and 294 kg / cm2 for 60 minutes. For group II (with rotation) is: 338 kg / cm2 for 0 minutes, 336 kg / cm2 for 12 minutes, 333 kg / cm2 for 24 minutes, 329 kg / cm2 for 36 minutes, 324 kg / cm2 for 48 minutes , and 318 kg / cm2 for 60 minutes. The results showed that, for the concrete without rotation: compressive strength at 60-minute time delay decreased by 15.52% of normal concrete (0 minute delay), and to the mixing concrete with rotation, compressive strength on delay of 60 minutes decreased by 5.92 % of normal concrete (0 minute delay). These results indicate that the delay time without rotation the greater the loss quality of concrete.
PENGARUH PERSENTASE PENAMBAHAN SIKA VISCOCRETE-10 TERHADAP KUAT TEKAN BETON
Authors: Zardi Muhammad , Rahmawati Cut , Azman T Khamarud
Published: July 2020

Building structure often use concrete as the main structural material, in which the concrete-forming materials such as cement, sand, gravel, water and additives. The aim of study is to investigate the influence of addition of Sika Viscocrete-10 toward concrete compressive strength. Concrete is planned with Water Cement Ratio 0.3. Slump values obtained for normal concrete with maximum aggregate diameter of 25.4 mm is 7.8 cm. The values are in accordance with the slump plan of 7.5 to 10 cm, meanwhile values slump that use Sika Viscocrete-10 as much as 0.5% is 19.5 cm; Sika Viscocrete-10 as much as 1% is 21.9 cm; Sika Viscocrete-10 as much as 1.5% is 23 cm; and Sika Viscocrete-10 as much as 1.8% is 24.7 cm. Based on these test results, the conclusion is addition of Sika Viscocrete-10 is able to enhance the workability value of concrete, so it is easy to work. Concrete mix design using the American Concrete Institute (ACI). Specimens used in this study is a standard concrete cylinder diameter of 150 mm and a height of 300 m, tested after the age of 14 days. Number of test specimens for all treatments is 25 with 5 specimens in each treatment. The average compressive strength of concrete with normal mixture is 295.43 kg/cm2; for concrete with Sika Viscocrete-10 as mush as 0.5% is of 376.50 kg/cm2; Sika Viscocrete-10 as mush as 1% is 452.94 kg/cm2; Sika Viscocrete-10 as mush as 1.5% is 501.63 kg/cm;2 and Sika Viscocrete-10 as mush as 1.8% is 515.78 kg/cm2. Concrete compressive strength greater with increasing percentage of Sika Viscocrete-10.
Pemodelan Kecepatan Arus dan Tinggi Gelombang Pada Rencana Breakwater Kolam Pelabuhan Meulaboh Dengan Menggunakan Program Delft3D
Authors: Syahputra Ichsan , Yuliana Heny
Published: July 2020

The Meulaboh port in West Aceh Regency is one of the ports in the west coast of Aceh Province. Initial operation of this port began in 2016 and currently serves crossing activities with the Meulaboh - Sinabang pass. The Meulaboh port is located in open water facing the Indian Ocean. In extreme conditions, ships often have to delay shipping due to high waves that cause shocks to the ship. Based on these problems, the study will provide an overview of the impact and hydrodynamic response of the Meulaboh port pool area and analyze the impact of wave heights on activities in the port pond based on several Breakwater construction layout scenarios. Alternative handling scenarios are carried out using the Delft3D program. The distribution of wave height at the direction of the wind from the Southwest with Hs = 4.908 m, and Ts = 7.254 seconds which shows the dominant wave from the Southwest restrained by Breakwater and the wave height in front of the port mouth ranges from between 0-1 meters so it is safe against activities cruise.
Pemberdayaan Pengelolaan Keuangan Dalam Meningkatkan Kemampuan Manajerial Bagi Pelaku Usaha Di Desa Warnasari Kecamatan Pangalengan Kabupaten Bandung
Authors: Nurhayati Nurhayati , Mulyana Yayan , Erlangga Heri
Published: July 2020

Di  Desa Warnasari terdapat 3 dusun yang mana masing-masing dusun mempunyai unggulan masing-masing . Dusun 1 mempunyai pengelolaan sampah, Taman Bacaan dan kopi, Dusun 2 unggulannya adalah makanan ringan dan peternakan sedangkan dusun 3 yaitu petani, wisata, peternakan dan anyaman. Di setiap dusun pelaku usahanya tidak banyak hanya beberapa saja yang sudah start up yaitu usaha pengolahan susu dan kerupuk kentang karena  sudah ada koperasi yang menampung hasil produksinya, sedangkan wisatanya berupa arung jeram situ Cileunca yang dikelola oleh Karang Taruna setempat.Metodologi pelaksanaan dalam pengabdian pada masyarakat ini dibagi menjadi 3 (tiga) tahap yaitu tahap awal yaitu Observasi dan wawancara langsung dengan mitra. Tahap pelaksanaan berupa: Pelatihan pembukuan keuangan sederhana yang dapat diaplikasikan oleh pelaku usaha.  Tahap yang terakhir adalah tahap monitoring. Dengan melakukan metode coaching, dimana pemilik UMKM menunjukkan hasil pencatatan keuangannya dengan menceritakan hambatan dan kesulitan yang dihadapi dalam melakukan proses pencatatan.Kegiatan pengabdian kepada masyarakat pada pelaku usaha Di Desa Warnasari mendapat respon yang positif. Pelaku usaha mendapatkan wawasan baru, mengetahui dan termotivasi dalam menjalankan usahanya baik melalui pembukuan / pencatatan keuangan sederhana yang mudah diaplikasikan serta memupuk motivasi kewirausahaan.Pembelajaran yang dapat diambil adalah dalam pengelolaan perusahaan, membutuhkan sistem yang terintegrasi yang saling terkait satu dengan yang lainnya.Artinya, dalam menjalankan usaha dibutuhkan komitmen yang tinggi dari pemilik usaha agar perusahaan untuk menjalankan sistem tersebut.Pembukuan keuangan sederhana tidak akan berjalan secara optimal tanpa adanya komitmen dari pelaku usaha untuk menjalankan sistem keuangan tersebut.Saran nya adalah sebaiknya pelaku usaha meningkatkan kreativitas dan inovasi dengan memperluas jaringan usaha agar semakin meningkatkan penjualan dan pendapatan
Pendidikan Islam Dalam Karya Sastra (Telaah Kritis Atas Buku La Tahzan Karya ‘Aidh Al-Qarni Perspektif Filsafat Pendidikan Islam)
Authors: Mumtahana Lusia
Published: July 2020

Abstract: The world of education in Indonesia indeed faces very complex problems and requires careful reform. To realize quality and efficient education, it is necessary to arrange and implement educational programs that are able to educate students in a sustainable manner. In this case the values of Islamic education are needed to improve the standard of living through all its aspects, which may not be able to reach the intended goals without going through a step-by-step process. By choosing the book titlled la tahzan as a scientific writing because in it the writer found the values of Islamic education that are absolutely needed in dealing with such problems. This is a library research and is a qualitative one. Data sources are then analyzed and the results are recorded and classified in accordance with the planned framework. The results of this study are: 1). to find out the values of Islamic education in the perspectives of education experts which include the value of religious education (aqidah islamiyah), the value of health education, the value of religious education, the value of sex education. 2). To find out the values of Islamic education in the book of Tahzan written by 'Aidh Al-qarni that includes both divine and human values. 3). to find out the differences and similarities of the values of Islamic education in the perspectives of education experts with the values of Islamic education in the book.Keywords: Values, Islamic education, La Tahzan
Kemampuan Pemecahan Masalah Matematika Siswa Sekolah Dasar Daerah Perbatasan Entikong (Indonesia-Malaysia)
Authors: Rahmawati Puji , Apsari Nurul
Published: July 2020

Proses pertukaran mata uang antara rupiah dan ringgit menurut pengamatan peneliti adalah suatu masalah yang harus diperhatikan dan cukup serius, karna sering terjadinya kerugian masyarakat atas jual beli yang terjadi. Dikarenakan kurang mahirnya masyarakat di dalam penguasaan konsep pemecahan masalah matematika pada aritmatika sosial membuat kejadian ini sangat rentan akan terjadi. Terlebih anak-anak yang ikut serta melakukan perdagangan. Untuk itu peneliti melakukan penelitian di desa tersebut dengan tujuan untuk melihat kemampuan pemecahan masalah siswa kelas III di SDN No.05 Suruh Tembawang. Adapun metode yang digunakan adalah penelitian survei dengan jenis penelitian survei catatan. Hasil dari penelitian menunjukkan bahwa dari keempat tahapan kemampuan pemecahan masalah menurut teori Peace, terdapat dua tahap yang muncul didalam pemecahan masalah yang dilakukannya. Tahapan tersebut adalah tahap memahami dan tahap melaksanakan rancangan solusi dari masalah yang disajikan.
Penerapan Model Student Teams Achievement Division Terhadap Kemampuan Pemahaman Konsep Matematika Siswa Kelas VIII
Authors: Yanuar Yanuar , Sukmawati Klara Iswara , Arifin Samsul
Published: July 2020

Matematika merupakan salah satu cabang ilmu pengetahuan yang sangat penting. Hal ini dikarenakan matematika berguna bagi kehidupan manusia dan juga mendasari perkembangan teknologi modern, serta peran penting dalam berbagai disiplin dan memajukan daya piker manusia. Namun data dari TIMSS 2011 menunjukan bahwa kemampuan siswa khususnya kemampuan pemahaman konsep masih rendah. Kemampuan pemahaman konsep adalah hal yang paling mendasar dalam pembelajaran matematika karena sebagai prasyarat untuk menguasai materi selanjutnya. Salah satu pembelajaran yang dapat digunakan sebagai upaya untuk mengembangkan kemampuan pemahaman konsep matematis siswa adalah pembelajaran Student Teams Achievement Divisions (STAD). Penelitian ini bertujuan untuk mengetahui apakah rata-rata kemampuan pemahaman konsep matematis siswa yang memperoleh dengan pembelajaran STAD lebih tinggi dibandingkan dengan siswa yang memperoleh pembelajaran yang diterapkan disekolah. Penelitian ini merupakan penelitian kuantitatif menggunakan metode eksperimen dengan desain quasi eksperiment tipe non equivalent posttest only control group design. Populasi dalam penelitian ini adalah seluruh siswa kelas VIII SMP Negeri 1 Simpang Pesak, Belitung Timur dengan jumlah sampel 80 siswa. Instrumen yang digunakan dalam penelitian ini yaitu tes kemampuan pemahaman konsep matematis siswa. Teknik pengambilan sampel menggunakan convenience sampling. Sampel pada penelitian ini adalah siswa kelas VIIIB sebagai kelas eksperimen sebanyak 20 siswa dan kelas VIIIC sebagai kelas kontrol sebanyak 20 siswa. Berdasarkan pengolahan data menggunakan Mann Whitney diperoleh nilai Zhitung = 2,090 dan Ztabel = 1,65, dikarenakan Â Zhitung > Ztabel, maka dapat disimpulkan bahwa rata-rata kemampuan pemahaman konsep matematis siswa yang memperoleh pembelajaran STAD Lebih tinggi dibandingkan dengan siswa yang memperoleh pembelajaran dengan konvensional.
Penerapan Metode Resitasi Pada Pembelajaran Statistika Untuk Meningkatkan Hasil Belajar Siswa
Authors: Uswatun Khasanah Liza Fitri , Fuadiah Nyiayu Fahriza
Published: July 2020

Penelitian ini bertujuan untuk mengkaji penerapan metode resitasi terhadap hasil belajar matematika siswa kelas XII IPS. Metode penelitian yang digunakan penulis adalah metode eksperimen dengan menggunakan post test. Subjek dalam penelitian ini adalah 35 siswa kelas XII IPS 4 Madrasah Aliyah NegeriÂ  1 palembang selama enam kali pertemuan.Â  Data hasil penelitian merupakan hasil belajar siswa yang diperoleh dari post test pada bahasan menentukan tabel distribusi frekuensi, menentukan nilai (mean, median dan modus), menentukan nilai (kuartil, desil dan persentil) dan dapat menggambar histogram, diagram batang, diagram garis, diagram lingkaran dan diagram batang daun. Teknik penilaian menggunakan kriteria penilaian dari Sahertien yaitu dengan menggunakan persentase sangat kurang, kurang, cukup, baik dan sangat baik. Dari hasil persentase dapat disimpulkan ada pengaruh yang positif dari penerapan metode resitasi terhadap hasil belajar matematika yakni peningkatan hasil belajar sebanyak 24%.
Negasi Siswa SMP Dalam Menyelesaikan Masalah Pecahan
Authors: Saparwadi Lalu
Published: July 2020

Tujuan dari penelitian ini adalah untuk mengetahui bentuk negasi siswa SMP dalam menyelesaikan masalah pecahan. Metode yang digunakan dalam penelitian ini adalah penelitian deskriptif dengan pendekatan kualitatif. Subjek penelitian ini adalah siswa di salah satu SMP di Kota Malang. Hasil penelitian menunjukkan bahwa negasi yang dilakukan oleh siswa dalam menyelesaikan masalah pecahan terjadi secara verbal dan nonverbal. Negasi verbal terjadi ketika siswa mengeluarkan pernyataan atau ungkapan yang menandakan penolakan, seperti salah dan tidak. Sedangkan negasi nonverbal siswa dalam menyelesaikan masalah pecahan terjadi melalui proses pembatalan elemen bilangan dengan invers elemen itu sendiri, sehingga diperoleh elemen identitas pada system operasi bilangan.
Efektivitas Model Pembelajaran Make A Match dan Talking Stick Terhadap Kemampuan Pemecahan Masalah Matematika
Authors: Irdina Siti Hafizah , Ekayanti Arta
Published: July 2020

Penelitian ini bertujuan untuk mengetahui pengaruh Model Pembelajaran Make A Match dan Talking Stick terhadap kemampuan pemecahan masalah matematika. Juga untuk mengetahui apakah Model Pembelajaran Make A Match lebih efektif terhadap kemampuan pemecahan masalah matematika daripada Talking Stick. Penelitian ini merupakan penelitian eksperimen semu dengan sampel kelas VIII B dan VIII D dari seluruh siswa kelas VIII SMP Negeri 1 Babadan Ponorogo sebagai populasi. Kelas VIII B diberi pembelajaran Make A Match dan kelas VIII D diberi pembelajaran Talking Stick. Data penelitian diperoleh dari hasil tes kemampuan pemecahan masalah matematika yang kemudian dianalisis menggunakan Uji Wilcoxon, Uji Paired Sample t-Test, dan Uji Mann Withney. Diperoleh hasil bahwa Model Pembelajaran Make A Match dan Talking Stick berpengaruh terhadap kemampuan pemecahan masalah matematika. Model Pembelajaran Make A Match lebih efektif terhadap kemampuan pemecahan masalah matematika dibandingkan Talking Stick.
Principles of Sustainable Tourism and Cultural Management in Rural and Ultra-peripheral Territories: Extracting Guidelines for Application in the Azores Archipelago
Authors: Castanho Rui Alexandre , Couto Gualter , Pimentel Pedro
Published: July 2020

There is a close relationship between sustainable tourism, cultural management, and the achievement of the desired sustainable development and growth. These issues seem to be particularly relevant in rural and ultra-peripheral areas, as in the case of the insular territories. Therefore studies that cross these fields using interdisciplinary analysis are pivotal to allow us to understand the patterns, dynamics, and variables that should be considered in the design of a sustainable territorial planning and manage-ment strategy. Contextually, the present study has been conducted based on the analysis of the existent thematic literature along with cross-referencing of collected and selected data for the Azores archipel-ago. In this regard, the present study enables involved actors, decision-makers, and policy-makers to better understand how sustainable tourism and cultural management principles should be addressed in the pursuit of long-term territorial sustainability.
KOMUNIKASI EDUKATIF ANTARA PENDIDIK DAN PESERTA DIDIK DALAM PENDIDIKAN ISLAM
Authors: Pane Akhiril
Published: July 2020

Interaksi edukatif adalah hubungan dua arah antara pendidik dan siswa dengan sejumlah norma sebagai media untuk mencapai tujuan pendidikan. Pendidik tidak hanya bertanggung jawab untuk menyampaikan materi pengajaran kepada siswa tetapi juga membentuk kepribadian siswa yang bernilai tinggi. Dalam pandangan modern, siswa tidak hanya dianggap sebagai objek atau sasaran pendidikan, tetapi juga harus diperlakukan sebagai mata pelajaran pendidikan. Karena keberhasilan atau kegagalan seorang pendidik dapat diukur dari aspek ini. Di sini pendidik adalah kunci untuk memegang kendali atas siswa. Artikel ini memiliki rumusan bagaimana gambaran komunikasi edukatif antara pendidik dan siswa dalam pendidikan Islam? Sedangkan tujuan penulisan artikel ini adalah untuk mendapatkan gambaran komunikasi pendidikan antara pendidik dan siswa dalam pendidikan Islam. Metode penulisan artikel ini adalah studi pustaka atau Library Research menggunakan teknik pengumpulan data yang diambil dari buku-buku ilmiah dan literatur yang relevan. Sedangkan teknik analisis data adalah Content Analysis, yaitu menganalisis data yang diperoleh dari buku atau literatur yang relevan. Kesimpulan dari penulisan artikel ini adalah bahwa dalam konsep pendidikan Islam komunikasi edukatif ditandai dengan adanya kecocokan antara nilai-nilai sebagai isi pesan dan dampak yang diinginkan oleh pendidik. Semakin tepat nilai yang diterima oleh siswa dan semakin jelas dampak yang diinginkan oleh pendidik, semakin efektif komunikasi pendidikan yang terjadi. Komunikasi edukatif yang berjalan secara efektif akan memungkinkan penyerapan makna pendidikan secara lebih penuh dan mendalam. Dengan demikian, komunikasi pendidikan adalah hal yang sangat penting dan signifikan dalam mendukung keberhasilan pembelajaran dalam pendidikan Islam
Encouraging the growth of skills and innovation in the Netherlands
Authors: Pennings Frans
Published: July 2020

This paper describes an example of best practice in the Netherlands with respect to promoting the innovation of enterprises. This policy consists of promoting cooperation between knowledge centres (including universities) and enterprises, enabling the enterprises and start-ups to be located in the neighbourhood of knowledge centres and assisting them in obtaining the required permits, and, if necessary, grant subsidies. This policy has proved to be very successful. Developing a training policy for all sectors of economy, on the other hand, is more difficult. This becomes even more difficult if employers and employees have opposite interests, especially if employers fear that the newly trained worker will leave their job after acquiring the new qualification or if the worker has to reimburse the subsidy. Therefore, the establishment of training funds, made available for all employers and workers who want to qualify for another job, can contribute to the growth of skills.
Intoxicación de equinos por Senecio pp en el noroeste argentino
Authors: Micheloud J. F. , Merep P. , Tomas R. H. , Perotti M. , Schuff C.
Published: July 2020

La toxicidad de varias especies del género Senecio es bien conocida a nivel mundial. En Argentina se han descrito casos en bovinos pero los registros son escasos. En este trabajo se describen cuadros de seneciosis equina en dos predios rurales del noroeste argentino (Salta). Se mencionan los hallazgos clínicos y patológicos, caracterizados por fibrosis hepática, megalocitosis, hiperplasia biliar y colestasis. En individuos afectados se observó pérdida de peso, depresión, ataxia y dificultad para deambular. En las áreas de pastoreo se identificó la presencia de Senecio rudbeckiaefolius, S. madagascariensis y S. hieronymi. Se identificaron y cuantificaron alcaloides pirrolizidínicos en estas tres especies, mediante cromatografía gaseosa acoplada a espectrometría de masa. Se determinó la presencia de senecionina, integerrimina, usaramina, jacozina, jacobina, senecivernina, platyphyllina y neoplatyphyllina. Los resultados obtenidos confirman la intoxicación de equinos por Senecio en Argentina y ponen de manifiesto los primeros hallazgos de alcaloides pirrolizidínicos en tres especies de Senecio endémicas para el noroeste del país.
Lactococosis en Pseudoplatystoma reticulatum
Authors: F. Quintana C. I. , Guidoli M. G. , Domitrovic H. A. , Blanco T. K.
Published: July 2020

La lactococosis fue reportada a nivel mundial en numerosas especies de peces, ocasionando elevadas pérdidas económicas. seudoplatystoma reticulatum es una especie autóctona del río Paraná muy apreciada para el consumo, por lo cual la evaluación de las patologías en los cultivos intensivos es importante. Las muestras obtenidas en este trabajo corresponden a ejemplares juveniles provenientes de una piscicultura de la región nordeste argentina donde se registró una mortandad aguda. Los ejemplares afectados fueron anestesiados y sacrificados. Se realizó la ablación del hígado y secciones del órgano fueron empleadas para improntas. Pequeños trozos se colocaron en medio de cultivo Reinforced Clostridial Medium (Difco) y fueron incubados. El medio decultivo crecido se sembró por estriado en placas conteniendo medio de Man Rogos y Sharpe agar (MRS Merck), cultivándose durante 24 a 48 h. Los microorganismos obtenidos se sometieron a pruebas bioquímicas para determinar su ubicación taxonómica. Fragmentos de branquias, hígado, bazo, tubo digestivo y riñón fueron fijados en solución de Bouin, posteriormente fueron deshidratadas e incluidas en parafina. Los cortes histológicos se colorearon con Hematoxilina-Eosina, PAS y Giemsa. Se encontraron lesiones hemorrágicas en distintos puntos del tegumento, presencia de líquido ascítico y numerosas lesiones puntiformes en hígado. En las improntas y pruebas bioquímicas se detectaron cocos Gram positivos aislados, en diplos o en cadenas cortas, catalasas negativas e incapaces de reducir nitratos y sintetizar triptófano a partir de indol. En el hígado se observó predominio de alteraciones vasculares, fundamentalmente hemorrágicas de marcada intensidad. En el bazo se observaron intensas alteraciones vasculares, con predominio congestivo y hemorrágico. Las características clínicas de las lesiones, las pruebas bioquímicas y el diagnóstico histopatológico permiten atribuir la mortandad a Lactococcus garvieae.
Intoxicación por Brugmansia arborea (Solanaceae) en un canino
Authors: Sosa S. , Ingold A. , Delucchi L. , García C.
Published: July 2020

Los animales de compañía pueden ser víctimas de intoxicaciones de diferente origen, constituyendo las plantas un 10-15% de las etiologías reportadas. Brugmansia arborea sin. Datura arborea (floripondio, trompeta de ángel) es un arbusto o árbol pequeño, perenne, con flores blancas, cónicas y pendulares, que se encuentra distribuido mundialmente, utilizándose como planta ornamental en jardines. El género Brugmansia posee un alto contenido de alcaloides del tropano como escopolamina, hiosciamina y atropina, que antagonizan las acciones de la acetilcolina y los receptores colinérgicos muscarínicos. En la bibliografía se encuentran documentados numerosos casos de intoxicación por esta planta en seres humanos, provocando un síndrome anticolinérgico, parálisis flácida, convulsiones y muerte. En el presente trabajo se describe por primera vez el diagnóstico de un caso de intoxicación por Brugmansia arborea en un perro de dos meses de edad. Se describen los signos clínicos observados y su correlación con los reportados en casos humanos.
Prototecosis canina: primer reporte en Argentina
Authors: Spampinato M. F. , Kujman S. , Cantón J. , Daglio C. , Catena M.
Published: July 2020

La prototecosis es una enfermedad infecciosa causada por algas del género Prototheca, que afecta a animales y seres humanos. El objetivo del presente trabajo fue reportar un caso de prototecosis en una perra bulldog francés de 3 años oriunda de la ciudad de Mar del Plata, Argentina, con antecedentes de diarrea hemorrágica crónica sin respuesta al tratamiento convencional. La citología de mucosa rectal y las biopsias endoscópicas mostraron abundantes organismos levaduriformes compatibles con Prototheca zopfii. Se detallan los hallazgos clínicos, endoscópicos, citológicos e histopatológicos. De acuerdo a la investigación efectuada por los autores, este es el primer caso de prototecosis canina reportado en la Argentina.
CULTURAL VALUES IN POLICY PENETRATION: New Pattern of Communication in Creating Public Obedience
Authors: Mani La
Published: July 2020

Many studies related to the policy of street vendors relocation in various cities in Indonesia, even in the world. However, there is still limited research examining the cultural variability of government and street vendors. Culture is not the only variable which can influence the behaviour of street vendors in responding the policies, but omnipresent cultural existence becomes a major factor in communication of government policies. The research was carried out in a qualitative explanatorywith the main focus on the implementation of street vendor policy relocation in Yogyakarta City, Indonesia. Data collection techniques were carried out through in-depth interviews with the actors or communicators in the communication of relocation policies to street vendors. The success or failure of the public policy implementation has many determinants. In a system perspective, a policy is in the frame of the environment which requires the integration of all elements which can influence it. This research has found that culture is the main determinant whichcan be one of the determinants of successful communication, creating compliance, forming positive opinions, conformity, and building consensus on the policy of street vendors relocation in Yogyakarta City, Indonesia.
SILVER RECOVERY FROM END-OF-LIFE PHOTOVOLTAIC PANELS
Authors: Oliveira Larisse Suzy Silva de , Lima Maria Tereza Weitzel Dias Carneiro , Yamane Luciana , Siman Renato Ribeiro
Published: July 2020

The growth of the photovoltaic sector has stood out among renewable sources of energy, due to technological innovations that have brought about cost reductions. Thus, this paper aimed to analyze the technical feasibility of silver recovery from photovoltaic cells using acid leaching, followed by an evaluation of the chemical and electrochemical precipitation processes to analyze their efficiencies. As a primary objective of this work, the gravimetric composition and the metal concentration (Ag, Al, Pb, Cu, and Fe) in the photovoltaic cells were first determined, developing the basis for future research on photovoltaic panels recycling Subsequently, the influence of HNO3 concentration (1-10 mol/L), temperature (25-60ºC), and reaction time were evaluated. A new research application used a statistical tool, the Central Composite Rotational Design (CCRD), as well as samples of different brands and models of photovoltaic panels, in order to ensure the experimental validity. As a highlight, the analysis of the composition of the photovoltaic cells, applying the HNO2CO3, as well as electroprecipitation, made it possible to extract more than 99% of silver in solution, being a primary novelty of this study. Therefore, the studied pathway allowed for the recovery of 99.98% of the silver present in the photovoltaic cells.
CASE STUDY ON ENHANCED LANDFILL MINING AT MONT- SAINT-GUIBERT LANDFILL IN BELGIUM: PHYSICO-CHEMICAL CHARACTERIZATION AND VALORIZATION POTENTIAL OF COMBUSTIBLES AND INERT FRACTIONS RECOVERED FROM FINE FRACTIONS
Authors: Hernández Parrodi Juan Carlos , Vollprecht Daniel , Pomberger Roland
Published: July 2020

The fine fractions account for the largest share of material recovered through (enhanced) landfill mining. These fractions typically present challenging characteristics for processing and valorization methods and, hence, they have been largely discarded in previous landfill mining projects. This situation has hindered the economic and environmental feasibility of landfill mining, since most of the excavated waste has been directed back into the landfill. Therefore, the fine fractions are one of the major challenges faced by (enhanced) landfill mining and suitable material and energy recovery schemes for these fractions need to be further developed and, if necessary, created. To this end, the physico-chemical characteristics of the “Combustibles” and “Inert” fractions recovered from the fine fractions <90 mm through a dry-mechanical process have been determined and their suitability for waste-to-material and waste-to-energy schemes has been evaluated in the MSG case study. The recovered “Combustibles” fractions represented 12.5 wt.% and 9.0 wt.% of the fine fractions <90 mm processed in the optimal water content and dry states, while the recovered “Inert” fractions accounted for 35.5 wt.% and 37.2 wt.%, respectively. According to the EN 15359:2011, the “Combustibles” fractions could be valorized as SRF in (co-)incineration, power and cement plants in both the optimal water content state and the dry state in the EU. However, in Austria these fractions can only be incinerated and not co-incinerated according to the Austrian Waste Incineration Ordinance (AVV), since in some cases they present concentrations of As, Cd, Co, Hg and Pb above the limit values. Therefore, in contrast to conventional (co-)incineration, the plasma gasification process proposed by the NEW-MINE project might offer a potential waste-to-energy valorization route for the combustible fractions obtained from the fine fractions of landfill-mined waste. As for the “Inert” fractions, there is no overarching legislation in the EU to regulate such materials yet in place and, hence, these fractions are solely subject to national or local regulations on recycling building materials. In Austria the “Inert” fractions would need further treatment in order to be valorized as a substitute for construction aggregates according to the Austrian Recycling Building Materials Ordinance (RBV), as they exceed the limit values for hydrocarbons, Cd, Pb, Zn, NH4+ and anionic surfactants in certain cases. Therefore, suitable waste-to-material valorization schemes for the recovered inert fractions from the fine fractions of landfill-mined waste are to be further developed, while appropriate overarching regulations need to be created at EU level.
DETECTION AND ANALYSIS OF METHANE EMISSIONS FROM A LANDFILL USING UNMANNED AERIAL DRONE SYSTEMS AND SEMICONDUCTOR SENSORS
Authors: Daugėla Ignas , Suziedelyte Visockiene Jurate , Kumpiene Jurate
Published: July 2020

Landfill operators must collect data on the topography of their landfills, their biological and hydrological characteristics, and local meteorological conditions. These data can be collected by satellite, using Unmanned Aerial Vehicles, or by traditional methods such as static flux chambers or modelling. They serve as the basis for landfill monitoring, including the identification and measurement of methane (CH4) gas emissions. Here, we present an approach for landfill mapping using sensor data from unmanned aerial drone systems (UADS) based on DJI Matrice 200 UAVs with Zenmuse X4S sensors and Trimble UX5 UAVs with Sony NEX-5R sensors. RGB (Red, Green, Blue) and near infrared (NIR) data from these sensors were processed using a Geographic Information System (GIS) to generate orthoimages, digital elevation models (DEMs), and normalized difference vegetation index (NDVI) maps. These were then used to evaluate changes in the surface structure and topography of the study area (Kariotiškės landfill, Lithuania). The NDVI maps were used to identify areas of sparse vegetation cover that may indicate localized CH4 emissions. Surface temperature maps based on thermal infrared (TIR) images were then prepared for analysis of these problematic areas. Finally, the presence of CH4 in these areas was investigated using a prototype lightweight gas sensor array. The structure of the Kariotiškės landfill site remained unchanged over three years, but there is evidence of possible CH4 gas influence at the landfill cover’s surface. The combination of UADS-mounted imaging systems and the prototype gas sensor array enabled rapid analysis of emission hotspots and of landfill topography.
Scale and Impacts of Livelihoods Development on Women Empowerment in the Solid Waste Sector of Jordan
Authors: Saidan Motasem , Abu Drais Ammar , AL-Manaseer Ehab , Alshishani Murad , Linton Colette
Published: July 2020

The present study outlines a cohesive compilation of analysis of the involvement of women in decision-making and leadership in the solid waste sector in Jordan. The socio-economic challenges have been catalyzed by the influx of Syrian refugees into the host communities and camps in Jordan. Hence, deterioration of municipal solid waste services have centered on and proposed that women engagement in the Solid Waste (SW) sector to provide opportunities that aim to improve livelihoods by producing an avenue for added income generation through the recycling and sorting scheme; as well as the cost revenue implications for the municipalities. Since 2015, projects added prospects for continued engagement of women and have drastically increased their involvement by filling management positions in the development and operation of municipal SW Transfer Stations (TSs), including heading the design and operation of the TS, and the recycling project. While 54 employment opportunities were created within North Shouneh SW pilot project; 37,794 women jobs of recycling and composting were made available by the cash for work initiative throughout 2016-2017, as well as, 60 women were employed in Zaatari camp. Moreover, when CBOs are directly involved, there has been more opportunity to engage women in employment in the solid waste sector.
THE ELEVATED TEMPERATURE AND GAS COMPONENT WITHIN AN OPERATING SEMI-AEROBIC LANDFILL
Authors: Huy Vu Quang , Kohata Yukihiro , Yoshida Hideki
Published: July 2020

The semi-aerobic landfill concept, which is based on passive aeration, is the compulsory standard for planning new landfill projects in Japan. The semi-aerobic landfill concept is also applied in several other countries because of its low construction and operating costs. The landfill gas (LFG) component and the LFG temperature are the main indicators of the aerobization of semi-aerobic landfills. Analysis of LFG, its concentration, and its temperature can be easily carried out on-site to evaluate the passive aeration of an operating semi-aerobic landfill. Therefore, this study observed LFG temperatures and LFG components to assess the partial aerobization within an operating semi-aerobic landfill. The observational data revealed that the methane (CH4) gas concentration of most of the main LFG venting pipes (VPs) was below 15%. The aerobic condition happened effectively surrounding the main LFGVP M2 because over the observation period, the ratio of CH4 to CO2 was less than 1.0. The highest gas temperature was above 60°C within the main LFGVP M2, and there was a trend of high temperatures above 40°C for more than 5 years before the temperature declined to 20°C in the most recent observation. The high LFG temperatures were recorded in the winter months due to the buoyancy effect. High temperature and the CH4/CO2 ratio less than 1.0 potentially representing good indicators showed that aerobic decomposition is becoming dominant. The study showed clearly that the aerobic biodegradation performance in this semi-aerobic landfill is extremely good.
The Chinese Herb Codonopsis pilosula Isolate Isorhapontigenin protects against oxidative stress injury by inhibiting the activation of PI3K/Akt signaling pathway
Authors: Gu Youquan , Wang Tianhong , Chen Jun , Zhou Zhe , Wang Ying , Chen Jiangjun , Liu Ning , Jiang Zhenxiu
Published: July 2020

We investigated the effects of the Chinese herb Codonopsis pilosula isolate isorhapontigenin on antioxidant factor and the PI3K/Serine/Akt signaling pathway in Parkinson's disease. This research was, therefore, carried out to explore a possible protective mechanism of isorhamnetin in Parkinson's disease. The results support that isorhapontigenin could effectively inhibit isorhapontigenin restored myeloperoxidase + induced reduction of antioxidant levels. Also, 1-Methyl-4-phenylpyridine up-regulated the expression of phosphorylated-Akt, phosphorylated-PI3K, and phosphorylated mammalian target of rapamycin, while isorhapontigenin inhibited the expression of phosphorylated-Akt, phosphorylated-PI3K, and phosphorylated- mammalian target of rapamycin. Furthermore, LY294002 improved the antioxidant effect of isorhapontigenin in PC12 cells, and insulin-like growth factor 1 inhibited the antioxidant effect of isorhapontigenin in PC12 cells. Our results support the finding that isorhamnetin enhanced the antioxidant effect induced by 1-Methyl-4-phenylpyridine in PC12 cells by suppressing the activation of the PI3K/Akt signaling pathway.
N-hydroxy-N'-(4-butyl-2-methylphenyl)-formamidine attenuates oxygen-glucose deprivation and reoxygenation-induced cerebral ischemia-reperfusion injury via regulation of microRNAs
Authors: Yang Tiansong , Wang Dongyan , Qu Yuanyuan , Wang Yulin , Feng Yuenan , Yang Yan , Luo Qiang , Sun Xiaowei , Yu Guoqiang , He Jia , Sun Zhongren , Zhu Yulan
Published: July 2020

Cerebral ischemia-reperfusion injury is a common complication that occurs during stroke treatment. Increasingly, microRNAs have been found to participate in the modulation of neuron function; however, the role of microRNAs in cerebral ischemia-reperfusion injury remains unclear. We developed a mechanism of cerebral ischemia-reperfusion injury using a cellular model of oxygen-glucose deprivation and reoxygenation-induced injury in human neuroblastoma SH-SY5Y cells. We found that treatment of oxygen-glucose deprivation and reoxygenation promoted the apoptosis of SH-SY5Y cells. Analysis of microRNAs sequencing revealed that the expression of microRNA-27a-5p was induced, and microRNA-29b-3p expression was inhibited in neuroblastoma cells exposed to oxygen-glucose deprivation and reoxygenation. Either inhibition of microRNA-27a-5p or overexpression of microRNA-29b-3p mitigated oxygen-glucose deprivation and reoxygenation-induced cellular apoptosis. Bach1 was authenticated as a target gene of microRNA-27a-5p. Also, microRNA-27a-5p mediated the expression of Bach 1 along with its downstream signaling. N-hydroxy-N'-(4-butyl-2-methylphenyl)-formamidine protected against oxygen-glucose deprivation and reoxygenation-induced apoptosis while decreasing miR-27a-5p expression and increasing microRNA-29b-3p expression. These results suggested that microRNA-27a-5p and microRNA-29b-3p may contribute to oxygen-glucose deprivation and reoxygenation-induced cellular injury. At the same time, N-hydroxy-N'-(4-butyl-2-methylphenyl)-formamidine protects SH-SY5Y cells against oxygen-glucose deprivation and reoxygenation-induced injury partly through the inhibition of microRNA-27-a-5p and promotion of the Bach1/HO-1 signaling pathway.
Anterior communicating artery aneurysm rupture and functional outcome in short-term: clipping versus coiling
Authors: Constantin Bäcker Henrik , Shoap Seth , Vajda János , Nyáry István
Published: July 2020

Our research aims to assess the change in the grade of responsiveness using the Hunt and Hess score as well as the modified ranking scale in patients suffering from anterior communicating artery rupture. We retrospectively analyzed data from 11-patients who suffered from an anterior communicating artery aneurysm rupture that caused a subarachnoid hemorrhage. Severity was assessed using the Hunt and Hess scale grade and modified ranking scale. Anterior communicating artery rupture caused a subarachnoid hemorrhage in 40.81% of all aneurysm ruptures that took place at the Circle of Willis. Unfortunately, 4-patients deceased (3.4%) at a median age of 52-years (range 34-75-years), three of which deceased after coiling and one after clipping. In 71-patients (61.2%) endovascular coiling was performed - 33-males and 38-females - and in the remaining 45-cases, (38.8%) clipping was indicated - 24-males and 21-females. Overall, the pre-interventional median Hunt and Hess scale was 2, which remained after the intervention. When relating the outcome score to the intervention performed, we found that the Hunt and Hess scale score was 3 before coiling and 2 before clipping, whereas afterward, there was a slight increase to 2 and 2, respectively. The modified ranking scale was 2 after clipping, respectively, coiling (P = 0.218). No significant differences were observed between the different groups. Our results show that clipping is as effective as coiling in terms of the Hunt and Hess scale and the rate of mortality in the short-term.
Tolosa-Hunt syndrome with general myasthenia gravis involvement
Authors: Li Lu , Wang Zhe , Lu Ming-Ou
Published: July 2020

Tolosa-Hunt syndrome is an uncommon disease that exhibits unilateral periorbital pain or headache, accompanied by cranial nerve palsies. Myasthenia gravis is an acquired immune system disease involving the neuromuscular junction. One rare case of Tolosa-Hunt syndrome combined with ocular myasthenia gravis had been reported in the literature, but not general myasthenia gravis. We present a patient with a probable coincidence of Tolosa-Hunt syndrome and general myasthenia gravis. A 63-year-old male exhibited episodes of unilateral headache with double vision, bilateral ptosis, vision decrease in the left eye and left facial hypoesthesia, muscle weakness in limbs and neck. The muscle weakness was fluctuating and could be relieved by rest. Blood analysis, cranial magnetic resonance imaging, magnetic resonance angiography/venogram) and orbit/mediastinum computed tomography demonstrated no abnormalities. Serum myasthenia gravis related antibodies detection showed positive titin- antibodies and ryanodine receptor antibodies. Corticosteroid and pyridostigmine bromide treatments were effective. Each of the patient’s symptoms had almost disappeared at the third-month follow-up. We speculate on the etiology of Tolosa-Hunt syndrome with general myasthenia.
High-sensitivity troponin in chronic kidney disease: Considerations in myocardial infarction and beyond
Authors: Chuang Anthony (Ming-yu) , Nguyen Mau T , Kung Woon-Man , Lehman Sam , Chew Derek P
Published: July 2020

Acute myocardial infarction (MI) represents one of the most common hospital encounters, with significant short-term and long-term morbidity and mortality, and frequently occurs in patients with chronic kidney disease (CKD). Cardiac troponin is an exquisitely sensitive biomarker for myocardial injury and plays an essential role in the diagnosis, risk-stratification, and management of MI. In 2017, the United States Food and Drug Administration approved Roche Diagnostics’ 5th generation high-sensitivity cardiac troponin (hs-cTn) for clinical use. Whilst the improved analytical sensitivity of these new high-sensitivity troponin assays facilitate early diagnosis of MI, it also frequently identifies troponin elevations above the conventional reference threshold in the context of non-coronary conditions such as renal dysfunction, and can represent a major diagnostic challenge to clinicians. Furthermore, the optimal management strategy of patients with troponin elevation and high comorbidity burden, a common issue in patients with CKD, remains undefined. In recent years, there has been substantial research and progress undertaken in this rapidly evolving area. In this review, we aim to provide clinicians with an overview of hs-cTn in the setting of CKD as well as an update on its application and the particular considerations involved in the management of myocardial infarction, stable coronary artery disease and myocardial injury in this high risk population.
Do Students have the Means to Learn During the Coronavirus Pandemic? Student Demands for Distance Learning in a Suddenly Digital Landscape
Authors: Händel Marion , Bedenlier Svenja , Gläser-Zikuda Michaela , Kammerl Rudolf , Kopp Bärbel , Ziegler Albert
Published: July 2020

Across the globe, 2020 terms began under conditions incited by the corona pandemic. Within a relatively short amount of time, universities started to develop and implement online courses for distance learning. These changes in learning and teaching may well have been a challenge for students.The current study is about an online survey at a German full-scale university investigating the unique circumstances under which students began the digital 2020 summer term. Of approximately 38,500 students, N = 5,563 students from across all institutional faculties took part in the survey. Results indicate how well students are equipped with devices for digital learning; what kind of experiences they have already made with online learning; and how competent they reported feeling regarding digital learning. Moreover, group differences between faculties, degrees, and gender were investigated. The study provides important insights into digital higher education during the exceptional pandemic situation. The results are intended to feed into student counselling systems via support by way of access to devices or courses regarding digital key competences, or through counselling for students with special social burdens.
Social Needs and Happiness: A Life Course Perspective
Authors: Buijs Vera L. , Jeronimus Bertus F. , Lodder Gerine M. A. , Steverink Nardi , de Jonge Peter
Published: July 2020

Introduction. Both the fulfilment of affection, status, and behavioral confirmation needs and their role in happiness may differ along the adult lifespan. Aims. We examined age-graded differences in (a) the fulfilment of the need for affection, status, and behavioral confirmation, (b) disharmonious profiles of need fulfillment (e.g., high affection but low status), and (c) the associations between these needs and happiness. Methods. Data from 11,406 Dutch respondents (age range 18-87 (M=44.82, SD=14.62), 67% female) were collected via hoegekis.nl and categorized over six age groups (early, young, middle-aged and late adults, young-old and oldest-old). Age-graded differences in social need fulfilment and their link to happiness were examined using regression analyses. Need fulfillment profiles were identified with LCA cluster analyses. Results. Age-graded differences in social need fulfilment were virtually absent (Cohen’s d=0.20 or smaller) and their link with happiness was stable across the age groups. Social need fulfilment profiles were harmonious as people reported either low, middle, or high need fulfilment in general, irrespective of age. Conclusion. The idea that different social needs are more important in different phases of adult life received only weak support in our data. No strategic investment in specific social needs was observed (no substitution-effects). People typically differed in their capacities to fulfil their affection, status, and behavioral confirmation needs in general, regardless of age. The implications of these results for the social production function theory of wellbeing and socioemotional selectivity theory are outlined in the discussion.