bluuebunny/crossref_metadata_2025 huggingface dataset:
Sealing performance analysis of composite gaskets made of silicone rubber filled with ramie natural fibers
Authors: W. S. Widodo , Soenoko R. , Choiron M. A. , Sonief A. A.
Published: December 2019

Silicon rubber gaskets are commonly used in many industries for low pressure sealing conditions only. The research studies about the sealing performance improvement of a novel composite gasket made of the silicone rubber filled with ramie natural fibers in a bolted joint connection. In this research the sample of gasket consists of 4 different types of gasket i.e. a pure silicone rubber gasket and the silicone rubber composite gasket with 1, 2 and 3 layers of ramie fiber woven. The gaskets are tested using a water pressure testing equipment with a variation of internal fluid pressure and difference torques at 8 N.m, 12 N.m, 16 N.m and 20 N.m. The sealing performance is measured based on the maximum fluid pressure that can be hold by the gaskets before the fluid leaking occurred. The results show that the silicone rubber composite gaskets have better sealing performance comparing  with the pure silicone rubber gaskets where the silicon rubber gaskets capable to hold the internal fluid pressure until around 5 times rather  than pure silicon rubber gaskets (0.17 MPa comparing with 0.90 MPa). On the other hand the sealing performance of the composite gasket with 3 layers is almost 2 times better than the composite gasket with 1 layer and around 1.5 times better than the composite gasket with 2 layer of fiber woven.
Salud mental en estudiantes de pregrado de la Facultad de Medicina de la Universidad Nacional Mayor de San Marcos
Authors: Perales Alberto , Izaguirre Manuel , Sánchez Elard , Barahona Lorenzo , Martina Martha , Amemiya Isabel , Delgado Ana , Domínguez Imelda , Pinto Miguel , Cuadros Raúl , Padilla Alberto
Published: December 2019

Introducción. Estudios previos evidencian problemas de salud mental en estudiantes de pre-grado de la Facultad de Medicina de la Universidad Nacional Mayor de San Marcos (UNMSM). Objetivo. Evaluar si existen diferencias entre la frecuencia de problemas de salud mental entre los estudiantes de primer año, y el resto de años de estudio, en alumnos de las cinco escuelas profesionales de la Facultad de Medicina de la UNMSM. Métodos. Estudio transversal. Se utilizaron instrumentos validados para evaluar problemas de salud mental: intento suicida, pensamiento homicida, conducta disocial, problemas con el alcohol, depresión y angustia. Adicionalmente, se midieron niveles de resiliencia. Se incluyeron estudiantes de todas las escuelas profesionales de la Facultad de Medicina, en dos grupos de análisis: estudiantes de primer año y estudiantes de los otros años. Resultados. Se evidenció que en alumnos de primer año se encontró un 7,5% de intento suicida, 18,9% de conducta disocial y 21,9% de pensamiento homicida. Asimismo, se encontró un 4,8% de problemas con el alcohol, 8,5% de depresión y 3,2% de angustia. La frecuencia de problemas de salud mental fue mayor según transcurren los años de estudio, con diferencias estadísticamente significativas sólo en depresión, angustia y problemas con el alcohol. El 29,3% de encuestados tuvo bajo nivel de resiliencia. Conclusión. Se encontró frecuencias preocupantes de problemas de salud mental en los estudiantes de pregrado de la Facultad de Medicina de la UNMSM, aunque un porcentaje de alumnos ingresa a la universidad con problemas de salud mental. El entorno universitario sería factor agravante en depresión, ansiedad y problemas con el alcohol.
On the Margins of the Motherhood Discourse: Childlessness in Lithuanian Women’s Magazines during 1991–1996
Authors: Šumskaitė Lina , Rapolienė Gražina
Published: December 2019

Foreign scholars highlight that despite the modernization of social life, cultural attitudes towards thefamily are changing slowly, and women remain closely tied to the role of motherhood (McKennon Brody, Frey,2017). The media has the power to reflect on and change the attittudes prevailing in society, thereby reducing the stigmatizing ones. Researchers discover the domination of pronatal discourse by analyzing images of childlessness, which supports parenthood in many ways, and individuals, especially women, who do not raise children and are underestimated and often stigmatized (Gibb, 2019; Grill, 2019). In order to understand the current cultural attitudes towards childless women and to analyze changes in comparison to other countries, it is important to examine them from a historical perspective.The representation of childlessness in Lithuanian media during the last decades of the 20th century was not studied yet. The scholars (Marcinkevičienė, Praspaliauskienė, 1999; Maslauskaitė 2001; 2002) who had analyzed Lithuanian women’s magazines during the late Soviet period and after the Independence in 1990 focused mainly on the representations of familial and romantic relationships. This research, based on a qualitative content analysis of 224 articles from the most popular women’s magazines of 1991–1996, showed that sex education and abortion prevention were the prevailing topics covering the lack of public knowledge about reproductive and sexual health. The aim of the media was to consolidate motherhood as the main expression of femininity within the framewok of declining birth rates; therefore, infertility and voluntary childlessness were stigmatized.
POLA ASUH ANAK PADA IBU PEKERJA PABRIK DALAM PERSPEKTIF FIQIH PARENTING
Authors: Syamsuri Syamsuri
Published: December 2019

Abstract. This paper examines child parenting that occurs in working mothers in Paiton Probolinggo, East Java. On the one hand, the demands of fulfilling the family economy forced the mothers to work hard outside the home. On the other hand, they are required to care for and assist children in proper parenting intensely. Based on this fact, it is necessary to study how changes in parenting happened to work mothers and how fathers and mothers worked together in families to do co-parenting. These two problems are then examined from a gender mainstreaming perspective and then analyzed through fiqh so that the concept of gender relations in parenting can be found in accordance with the values of Islamic teachings. Through a case study approach, collecting, processing, and analyzing data with qualitative research principles, this study resulted in the finding of delegating parenting from parents to others resulting in low-quality supervision and assistance from caregivers to children and low levels of child satisfaction. This study also found no occurrence of parenting that involved fathers and mothers in the principle of partnership and ignorance. In the perspective of parenting fiqh, the parenting patterns that occur in Paiton Probolinggo are not in accordance with the values and laws of parenting fiqh. Abstrak. Tulisan ini mengkaji tentang pola asuh anak yang terjadi pada ibu pekerja di Paiton Probolinggo Jawa Timur. Di satu sisi tuntutan pemenuhan ekonomi keluarga memaksa para ibu untuk bekerja keras di luar rumah. Di sisi yang lain mereka dituntut untuk secara intens merawat dan mendampingi anak dalam pola asuh yang tepat. Berdasarkan fakta ini, perlu dikaji bagaimana perubahan pola asuh yang terjadi pada ibu pekerja serta bagaimana kerjasama ayah dan ibu dalam keluarga melakukan coparenting. Kedua permaslahan tersebut selanjutnya dikaji dari perspektif gender mainstreaming untuk kemudian dianalisis melalui fiqih sehingga dapat ditemukan konsep relasi gender dalam pengasuhan anak yang berkesesuain dengan nilai nilai ajaran Islam. Melalui pendekatan case study, mengumpulkan, mengolah, dan menganalisis data dengan prinsip-prinsip penelitian kualitatif, kajian ini menghasilkan temuan adanya pendelegasian pola asuh anak dari orang tua kepada orang lain yang berakibat rendahnya mutu pengawasan dan pemdampingan dari pengasuh terhadap anak serta rendahnya tingkat kepuasan anak. Kajian ini juga menemukan tidak terjadinya coparenting yang melibatkan ayah dan ibu dalam prinsip kemitraan dan kesalingan. Dalam perspektif fiqih parenting, pola pengasuhan anak yang terjadi di Paiton Probolinggo ini tidak sesuai dengan nilai dan prinsip fiqih parenting.
The Learning Strategies Used by EFL Students in Learning English
Authors: Mega Dinda Hartina , Santihastuti Asih , Wahjuningsih Eka
Published: December 2019

ABSTRACTThis research was aimed to focus on the most frequently used strategy by the successful and unsuccessful senior high school students and describe the difference of strategy used by them. This was a survey design with a questionnaire as the instrument. The participants were 40 students consisting of 20 successful students and 20 unsuccessful students of tenth grade in SMAN 2 Jember. The writer distributed SILL questionnaires to observe their Language Learning Strategy (LLS) based on Oxford (1990), which covers six categorizes of strategies namely cognitive, metacognitive, memory-related, compensatory, affective, and social. The statistical analysis showed that metacognitive became the most frequently learning strategy used by successful students in scale of high use, while the unsuccessful students were medium users of cognitive strategy. It also indicated successful learners employed all six categorizes of strategies in a highly frequencies than the unsuccessful ones. This makes the assumption that successful students have the ability to plan clear goals, control, review, and evaluate their learning rather than unsuccessful students who focus more on the way they think, memorize, summarize, and repeat the learning.ABSTRAKPenelitian ini bertujuan untuk fokus pada strategi yang paling sering digunakan oleh siswa SMA yang sukses dan kurang sukses serta menggambarkan perbedaan strategi yang digunakan oleh mereka. Penelitian ini merupakan penelitian survey dengan instrument berupa kuesioner, sedangkan tanggapan siswa dalam memilih strategi dibahas secara deskriptif. Partisipan adalah 40 siswa yang terdiri dari 20 siswa yang sukses dan 20 siswa yang tidak sukses dari kelas sepuluh di SMAN 2 Jember. Penulis membagikan kuesioner SILL untuk mengamati Language Learning Strategy (LLS) atau strategi pembelajaran bahasa mereka berdasarkan teori Oxford (1990, yang dikategorikan menjadi enam macam strategi, yaitu kognitif, metakognitif, memori, kompensatori, afektif, dan sosial. Menurut hasil statistic metacognitive menjadi strategi pembelajaran yang paling sering digunakan oleh siswa yang sukses dalam skala tinggi, sedangkan siswa yang kurang sukses adalah pengguna menengah dari strategi kognitif. Ini juga menunjukkan bahwa siswa yang sukses menggunakan keenam kategori strategi dalam frekuensi yang sangat tinggi daripada yang kurang sukses. Ini membuat asumsi bahwa siswa yang sukses memiliki kemampuan untuk merencanakan tujuan yang jelas, mengendalikan, meninjau, dan mengevaluasi pembelajaran mereka daripada siswa yang kurang sukses, yang lebih fokus pada cara mereka berpikir, menghafal, merangkum, dan mengulangi pembelajaran. How to Cite: Sartika,  D. H. M., Santihastuti, A., Wahjuningsih, E. (2019). The Learning Strategies Used by EFL Students in Learning English. IJEE (Indonesian Journal of English Education), 6(1), 10-20. doi:10.15408/ijee.v6i1.12111
A Computational Study on the Effects of Molecular Structures of Di-n-butyldithiophosphate and of its Derivatives on the Stability of Their Complex Compounds with Rare-Earth Elements
Authors: Nurdeni Nurdeni , Abdullah Atje Setiawan , Ruchjana Budi Nurani , A Hardianto , A Anggraeni , A Muthalib , Bahti Husein H
Published: December 2019

The stability of complex compounds  formed from the ligand di-n-butyldithiophosphate (DBDTP) and its derivatives, with ions of rare-earth elements (REEs), such as gadolinium ion (Gd3+), is an important factor in the separation and purification processes of the elements using solvent extraction method. The complex stability is dependent, one of which, on the partial charge of the donor atom (S atom in this case) in the molecule of DBDTP or its derivatives. The more negative the partial charge of the donor atom, the more stable is the complex compound formed. The purpose of this study is to explore the effect of electron donating, and of electron withdrawing groups, as well as the effect of the structure of the butyl group in the molecules of  DBDTP and or its derivatives on the partial charge of the donor atom. The method used was the semi empirical quantum mechanical calculations, i.e. the Austin Model 1 (AM1). The results of the study showed that the electron withdrawing group of -CN had resulted in the most positive charge on the donor atom, if it is on the second carbon atom of the butyl group in the DBDTP and or its derivatives. Conversely, in the same carbon atom position, the donating electron group of -CH=CH2 had generated the most negative partial charge on the donor atom. Furthermore, the results of this study also revealed that the sec-butyl isomer produced the most negative partial charge on the donor atom, among other isomers.
Optimization of Pretreatment and Hydrothermal Process of Na-X Zeolite from Kaolin and Metakaolin
Authors: Hartati Hartati , Sakti Satya Candra Wibawa , Firda Putri Bintang Dea , Saidah Chabibah
Published: December 2019

Synthesis of Na-X zeolite was conducted from kaolin and metakaolin. Synthesis varied in its pretreatment method and hydrothermal conditions. The pretreatment methods used were: conventional alkaline, alkaline fusion and conventional fluoride. Hydrothermal conditions for the experiments were gradual temperature 40 oC  (6h), 60 oC (6h), 80 oC (12h), and constant temperature 80 oC for 24 h, 100 oC for 24 and 100 oC for 48 h. Synthesized products were characterized by X-Ray Diffraction (XRD), Fourier Transform InfraRed (FTIR), Scanning Electron Microscopy-Energy Dispersive X-Ray (SEM-EDX), and N2 Isotherm Adsorption/Desorption method. The result showed that pre-treatment by conventional fluoride could not produce Na-X zeolite, synthesis by conventional alkaline and alkaline fusion with hydrothermal at 100 oC (48h), 100 oC (24 h), and gradual temperature produce Na-X zeolite with Na-P1 or Na-A zeolite as impurities, while synthesis from metakaolin by conventional alkaline with hydrothermal at 80 oC for 24 hours produced pure Na-X zeolite. Na-X zeolite and NaP1 zeolite with hierarchical pores were synthesized through alkali fusion with hydrothermal at 100 oC for 24 hours.
Performance of Modified Natural Zeolites by Sodium Hydroxide Treatments in The Esterification of Glycerol and Oleic Acid
Authors: Fauzi Rizky Achmad , Tursiloadi Silvester , Dwiatmoko Adid Adep , Sukandar Dede , Aulia Fauzan , Rinaldi Nino , Sudiyarmanto Sudiyarmanto
Published: December 2019

Esterification is the reaction of the formation of an ester compound by reacting an alcohol compound and carboxylic acid. In this study, the performance of zeolite-based catalysts has been studied for esterification reactions. Modification of zeolite pore size was done to be hierarchical zeolite, with the aim of increasing the catalytic properties of zeolite. The modification was carried out by desilication by sodium hydroxide treatment with a variation of 0.1; 0.3; 0.5 M. The resulting catalyst was then characterized using BET and XRD. Furthermore, the catalyst was tested for activity for esterification of fatty acids and glycerol and the product was analyzed using GC-MS. Zeolite modification with sodium hydroxide has been proven to improve catalyst performance, without changing their crystal structure. The best catalytic activity was obtained on the catalyst with sodium hydroxide treatment of 0.3 M, resulting glycerol conversion of 92% and selectivity to monoglycerides of 74%.
Uji Validitas Konstruk Pada Instrumen Rosenberg Self Esteem Scale Dengan Metode Confirmatory Factor Analysis (CFA)
Authors: Maroqi Nelan
Published: December 2019

Self esteem merupakan sebuah pembentukan karakter mengenai diri sesorang dan merupakan faktor penting dalam perilaku langsung berkaitan dengan berbagai aspek dalam hidup. Tanpa dibekali self esteem, individu akan mengalami kesulitan untuk mengatasi tantangan hidup maupun untuk merasakan berbagai kebahagiaan dalam hidupnya. Ia juga mengatakan bahwa self esteem mengandung nilai keberlangsungan hidup (survival value) yang merupakan kebutuhan dasar manusia. Hal ini memungkinkan self esteem mampu memberikan sumbangan bermakna bagi proses kehidupan individu selanjutnya, maupun bagi perkembangan pribadi yang sehat. Penelitian ini bertujuan untuk menguji validitas konstruk instrument tersebut. Data dalam penelitian ini subjek adalahsantri yang sedang dalam proses menempuh pendidikan di Pondok Pesantren Ma’hadut Tholabah Babakan, Lebaksiu, Tegal berjumlah 198 orang. Metode yang digunakan adalah Confirmatory Factor Analysis (CFA) menggunakan software LISREL 8.70.Hasil dari penelitian ini menunjukkan bahwa 7 dari 10 item yang ada bersifat unidimensional. Artinya hanya 7 item mengukur satu faktor saja sehingga model satu faktor yang diteorikan oleh rosenberg self esteem scale dapat diterima.Self-esteem is a character formation about someone and is an important factor in direct behavior related to various aspects of life. Without being equipped with self-esteem, individuals will find it difficult to overcome life's challenges and to feel various happiness in their lives. He also said that self-esteem contains the value of survival (survival value) which is a basic human need. This allows self-esteem to be able to contribute meaningfully to the next individual life process, as well as to healthy personal development. This study aims to examine the construct validity of the instrument. The data in this study were subjects who were in the process of taking education at the Ma'hadut Tholabah Babakan Islamic Boarding School in Lebaksiu, Tegal, amounting to 198 people. The method used is Confirmatory Factor Analysis (CFA) using LISREL 8.70 software. The results of this study indicate that 7 out of 10 items are unidimensional. This means that only 7 items measure only one factor so that the one-factor model theorized by Rosenberg's self-esteem scale can be accepted.
Hubungan Antara Orientasi Religiusitas Dengan Kepuasan Hidup
Authors: Suminta Rini Risnawita , Ghufron M. Nur
Published: December 2019

Tujuan penelitian ini adalah untuk mengetahui hubungan antara orientasi religiusitas dengan kepuasan hidup. Subyek penelitian ini adalah mahasiswa program studi Psikologi Islam, Jurusan Ushuluddin, Sekolah Tinggi Agama Islam Negeri Kediri. Jumlah sampel (N=168) dikumpulkan melalui sampling acak sederhana. Adapun teknik pengumpulan data menggunakan kuesioner dalam bentuk skala. Hasil penelitian menunjukkan bahwa ada hubungan positif yang signifikan antara orientasi religiusitas intrinsik dengan kepuasan hidup dan sebaliknya ada hubungan negatif yang signifikan antara orientasi religiusitas ekstrinsik dengan kepuasan hidup.
Pengaruh Keterampilan Sosial dan Pola Komunikasi Keluarga Terhadap Kecenderungan Adiksi Internet Pada Remaja Pengguna Smartphone
Authors: Pramusita Wisti Hasrikusuma
Published: December 2019

Penelitian ini bertujuan untuk mengukur pengaruh keterampilan sosial (ekspresi emosi, sensitivitas emosional, ekspresi sosial, kepekaan sosial & kontrol sosial), pola komunikasi keluarga (conversation orientation & conformity orientation) dan variabel demografi (jenis kelamin, tingkat kelas dan lamanya waktu memiliki sebuah smartphone) terhadap kecenderungan kecanduan internet smartphone pada remaja. Sampel dari 200 siswa SMA di Jakarta Selatan dengan rentang usia 14-19 tahun diambil dengan teknik non-probability sampling. Hasil penelitian menunjukkan bahwa ada pengaruh yang signifikan antara keterampilan sosial, pola komunikasi keluarga, variabel demografi terhadap adiksi internet. Hasil uji hipotesis minor menunjukkan bahwa tingkat kelas, lama kepemilikan smartphone, keterampilan kontrol emosi dan kontrol sosial sebagai prediktor signifikan untuk adiksi internet. Diskusi penting tentang adiksi internet dibahas dalam penelitian ini.
Prostitusi Remaja dan Ketahananan Keluarga
Authors: Ulfiah Ulfiah , Hannah Neng
Published: December 2019

Tujuan penelitian ini adalah; pertama, untuk mengungkapkan fenomena prostitusi remaja putri di Cianjur dilihat dari karakteristik tempat prostitusi, karakteristik pelaku dan korban serta mekanisme prostitusi yang terjadi; dan kedua, untuk mengetahui bagaimana kondisi ketahanan keluarga remaja putri yang menjadi korban. Penelitian ini menggunakan metode deskriptif analisis dengan menguji teori sebagai sebuah fenomena di lapangan melalui pendekatan kualitatif yang bertujuan untuk mengungkap realita yang terjadi pada remaja putri yang terlibat pada kegiatan prostitusi. Temuan  hasil lapangan kemudian dianalisis dengan metode genealogi Foucault sehingga peneliti mengidentifikasi kekuasaan-kekuasaan apa/mana saja yang berkaitan dengan fenomena prostitusi remaja putri dan ketahanan keluarga. Hasil penelitian diperoleh bahwa, Prostitusi remaja putri di Cianjur dilihat dari karakteristik tempat prostitusi, karakteristik pelaku dan korban serta mekanisme prostitusi yang terjadi. Pada penelitian ini ditemukan ada empat macam pelaku perdagangan anak untuk prostitusi, yaitu pacar, teman, dan mucikari.
Integrated Care Models and Child Health: A Meta-analysis
Authors: Wolfe Ingrid , Satherley Rose-Marie , Scotney Elizabeth , Newham James , Lingam Raghu
Published: December 2019

CONTEXT:

Integrated care models may improve health care for children and young people (CYP) with ongoing conditions.

OBJECTIVE:

To assess the effects of integrated care on child health, health service use, health care quality, school absenteeism, and costs for CYP with ongoing conditions.

DATA SOURCES:

Medline, Embase, PsycINFO, Cumulative Index to Nursing and Allied Health Literature, and the Cochrane Library databases (1996–2018).

STUDY SELECTION:

Inclusion criteria consisted of (1) randomized controlled trials, (2) evaluating an integrated care intervention, (3) for CYP (0–18 years) with an ongoing health condition, and (4) including at least 1 health-related outcome.

DATA EXTRACTION:

Descriptive data were synthesized. Data for quality of life (QoL) and emergency department (ED) visits allowed meta-analyses to explore the effects of integrated care compared to usual care.

RESULTS:

Twenty-three trials were identified, describing 18 interventions. Compared with usual care, integrated care reported greater cost savings (3/4 studies). Meta-analyses found that integrated care improved QoL over usual care (standard mean difference = 0.24; 95% confidence interval = 0.03–0.44; P = .02), but no significant difference was found between groups for ED visits (odds ratio = 0.88; 95% confidence interval = 0.57–1.37; P = .57).

LIMITATIONS:

Included studies had variable quality of intervention, trial design, and reporting. Randomized controlled trials only were included, but valuable data from other study designs may exist.

CONCLUSIONS:

Integrated care for CYP with ongoing conditions may deliver improved QoL and cost savings. The effects of integrated care on outcomes including ED visits is unclear.
Ants in the diet of Collared Anteater, Tamandua tetradactyla (Linnaeus, 1758) (Pilosa, Myrmecophagidae), in the state of Rio de Janeiro, Brazil
Authors: Silva Márcio Morais , Esbérard Carlos Eduardo Lustosa , Mayhé-Nunes Antônio José , Bueno Cecília
Published: December 2019

The Collared Anteater, Tamandua tetradactyla (Linnaeus, 1758), is a small mammal predator of ants. There are few studies describing which species are in fact consumed by them. This study was aimed to investigate the diversity and abundance of local species of ants preyed by the T. tetradactyla. Eight samples of stomach contents collected in the period from 2009 to 2014 were analyzed and identified at the lowest possible taxonomic level. We found 5,906 ants distributed in 16 species. The most abundant samples were number 2 and 4 with almost 2,000 individuals and the highest richness and abundance was Myrmicinae subfamily with eight species and 3,721 individuals. The ant richness found in this research demonstrates that the anteaters are generalists and opportunistic about their diet, not having a preference for a particular species, but rather for those insects that are available in their habitat.
New occurrences of small aquatic duckweeds (Araceae, Lemnoideae) in Maranhão state, northeastern Brazil
Authors: Ferreira Alessandro Wagner Coelho , de Oliveira Miguel Sena , Junior Wagner Ribeiro da Silva , de Andrade Ivanilza Moreira , Nadruz Coelho Marcus Alberto , Oliveira Hermeson Cassiano de , Mayo Simon Joseph
Published: December 2019

This study presents the first records for Maranhão state, northeastern Brazil, of the duckweeds Lemna valdiviana Phil., Wolffia brasiliensis Wedd. and Wolffiella lingulata (Hegelm.) Hegelm. The species were collected in a survey of water bodies in the muncipalities of Caxias, Igarapé do Meio and São João do Sóter. Descriptions, illustrations, maps, georeferenced specimen citations and an identification key are provided. These new records contribute to the expansion of the knowledge of the Maranhão flora and the geographic distribution of the Lemnoideae of the Northeast region of Brazil.
Pengaruh dosis bokashi jerami padi sebagai sumber silika (Si) terhadap pertumbuhan dan hasil tiga varietas padi sawah (Oryza sativa L.)
Authors: Birnadi Suryaman , Frasetya Budy , Sundawa Eko Prastio
Published: December 2019

Penurunan ketersediaan unsur silikon (Si) di dalam tanah berdampak terhadap produktivitas padi, padahal jerami padi merupakan sumber pupuk Si yang memiliki kandungan silika 5-6%. Respons pemupukan silika pada setiap varietas padi berbeda. Penelitian ini bertujuan untuk mengetahui interaksi dan dosis rekomendasi bokashi jerami padi untuk setiap jenis varietas padi yang diteliti. Penelitian menggunakan Rancangan Acak Kelompok Faktorial dua faktor dengan tiga ulangan. Faktor pertama yaitu dosis bokashi jerami (J) terdiri dari 4 taraf yaitu: j0=tanpa bokashi jerami, j1= 7,5 t ha-1 bokashi jerami padi (Si=961,5 kg ha-1), j2=15 t ha-1 bokashi jerami padi (Si=1923 kg ha-1), j3=22,5 t ha-1 bokashi jerami padi (Si=2884,5 kg ha-1). Faktor kedua varietas padi (V) yaitu: v1= Inpari 19, v2= Inpari 13 dan v3= Ciherang. Parameter yang diamati: tinggi tanaman, jumlah anakan, berat gabah 1000 butir, berat gabah per rumpun dan berat gabah per hektar. Data hasil pengamatan dianalisis menggunakan analisis varians pada taraf 5%, dilanjutkan dengan uji beda jarak Duncan pada taraf 5%. Hasil analisis varians menunjukkan terdapat interaksi antara dosis bokashi jerami padi dengan jenis varietas padi pada berat gabah 1000 butir dan pengaruh mandiri terhadap parameter lainnya. Aplikasi bokashi jerami 15 t ha-1 meningkatkan produktivitas tiga varietas padi.ABSTRACTDeclining silicon availability in the soil affects paddy productivity, meanwhile paddy straw as a source of silica contains 5-6% silica. Response of application silica fertilizer is different for each paddy cultivar. This study aimed to determine the interaction and dosage recommendations of paddy straw bokashi for each type of paddy varieties observed. This study used a factorial randomized block design two factors with three replications. The first factor was bokashi paddy straw dose (J) consisted of 4 levels, namely: j0 = without bokashi straw, j1 = 7.5 t ha-1 bokashi rice straw (Si = 961.5 kg ha-1), j2 = 15 t ha- 1 bokashi straw rice (Si = 1923 kg ha-1), j3 = 22.5 t ha-1 bokashi rice straw (Si = 2884.5 kg ha-1). The second factor was paddy cultivar (V), i.e: v1 = Inpari 19, v2 = Inpari 13 and v3 = Ciherang. Parameters observed were plant height, number of tillers, 1000 grains weight, weight of grain per clump, and weight of grain per hectare. The data were analyzed with analysis of variance at the significance level of 5%  than continued with Duncan multiple range test at a significant level of 5%. The results showed that there was an interaction between the bokashi doses of paddy straw and the rice varieties on the grain weight of 1000 grains, yet independent effects occured on the other parameters. The application of 15 t ha-1 bokashi straw increases the productivity of three rice varieties.
Efektivitas bintil akar kedelai edemame (Glycine max (L.) Merr.) dengan pemberian TKKS di tailing pasir pasca tambang timah
Authors: Santi Ratna , Aini Sitti Nurul , Alfajri Alfajri
Published: December 2019

Efektivitas bintil akar kedelai edamame dipengaruhi oleh penggunaan pupuk sebagai sumber energi mikroba. Pemanfaatan kompos tandan kosong kelapa sawit (TKKS) merupakan solusi alternatif pupuk organik. Penelitian ini bertujuan untuk mengetahui pengaruh kompos TKKS terhadap efektivitas bintil akar dan perkembangan fase generatif edamame di tailing pasca tambang timah. Metode penelitian yang digunakan adalah Rancangan Acak Kelompok dengan tiga ulangan. Perlakuan kompos terdiri atas tujuh taraf, yaitu: K0 (tanpa kompos TKKS dan legin), K1 (10 t ha-1), K2 (15 t ha-1), K3 (20 t ha-1), K4 (25 t ha-1), K5 (30 t ha-1)dan Legin. Hasil penelitian penggunaan kompos tandan kosong kelapa sawit dapat meningkatkan efektivitas bintil akar dan perkembangan fase generatif edamame di tailing pasir pasca tambang timah. Persentase bintil akar efektif, jumlah polong dan bobot polong terbanyak pada perlakuan 20 t ha-1. ABSTRACT Edamame soybean nodule effectivity was influenced by the optimalization of fertilizer as a microbial energy sources. Utilization of palm oil empty fruit bunch compost (POEFBC) is an alternative solution for organic fertilizer. This study was to determine the effect of POEFBC on root nodules effectivity and edamame soybean generative stage in sandy tailing post tin mining. Experimental method used Randomized Block Design with three replications. The treatments consist of seven levels i.e. K0 (without POEFBC and legin), K1 (10 t ha-1), K2 (15 t ha-1), K3 (20 t ha-1), K4 (25 t ha-1), K5 (30 t ha-1) and Legin. The results showed that the use of palm oil empty fruit bunches compost can increase the activity of edamame soybean root nodules and develop the generative stage of edamame in sandy tailing post tin mining. The treatment 20 t ha-1 showed the best treatment for the effective percentage of root nodules, number of pods and pod weight.
Karakterisasi Gelembung Renang Ikan Tuna Sirip Kuning (Thunnus sp.) dan Kolagen yang dihasilkan melalui ekstrasi Asam Asetat
Authors: Hadinoto Sugeng , Kolanus Joice P. M. , Idrus Syarifuddin
Published: December 2019

Gelembung renang dapat dimanfaatkan sebagai bahan baku kolagen karena mempunyai kandungan protein kolagen yang cukup tinggi. Penelitian ini bertujuan untuk mengetahui komposisi kimia gelembung renang ikan tuna sirip kuning dan karakteristik kolagen yang diperoleh melalui ekstraksi menggunakan asam asetat 0,2 M. Gelembung renang ikan tuna sirip kuning diuji kandungan komposisi proksimat, logam berat (Hg, Pb, Cd dan As) dan asam amino. Kuantitas dan kualitas kolagen hasil ekstraksi dilihat melalui parameter rendemen, komposisi proksimat, logam berat, cemaran mikroba dan karakteristik fisikokimia (gugus fungsi, berat molekul, asam amino, dan stabilitas termal). Hasil penelitian menunjukkan bahwa gelembung renang ikan tuna sirip kuning mengandung protein 19,17%, yang didominasi oleh jenis asam amino glisin 5,71 mg/g, arginin 3,72 mg/g dan alanin 3,95 mg/g. Kandungan logam berat gelembung renang masih berada di bawah ambang batas. Ekstraksi kolagen dari gelembung renang ikan tuna sirip kuning  menggunakan asam asetat 0,2 M menghasilkan rendemen kolagen sebesar 1,15%. Kolagen yang dihasilkan mengandung protein sebesar 94,14%, yang didominasi oleh asam amino glisin 1957,75 mg/g, arginin 827,96 mg/g dan alanin 825,98 mg/g; tidak terdeteksi logam berat (Hg, Pb, Cd dan As); dan bebas dari cemaran Escherichia coli, Salmonella dan Coliform. Karakteristik gugus fungsi dan berat molekul menunjukkan kolagen yang diperoleh tergolong kolagen Tipe I, dan kolagen yang dihasilkan memiliki kestabilan termal yang tinggi sehingga dapat diaplikasikan pada industri makanan, farmasi dan kosmetik.
Karakterisasi Edible Film dari Karagenan dan Kitosan dengan Metode Layer by Layer
Authors: Dwimayasanti Rany , Kumayanjati Bayu
Published: December 2019

enis pengemas biodegradable saat ini sangat diperlukan untuk mengurangi penggunaan plastik sintetik, di antaranya dengan pengembangan pengemas edible film yang lebih ramah lingkungan. Karagenan dan kitosan merupakan polimer alam yang berpotensi menjadi bahan dasar dalam pembuatan edible film. Penelitian pembuatan edible film berbahan dasar karagenan dan kitosan dengan metode layer-by-layer telah dilakukan. Penelitian ini bertujuan untuk mengetahui pengaruh konsentrasi karagenan dan kitosan yang berbeda terhadap kualitas edible film yang dihasilkan. Karakterisasi film yang dilakukan meliputi uji kuat tarik, elongasi, kelarutan, water vapour permeability (WVP) dan morfologi permukaan. Rancangan percobaan yang digunakan adalah faktorial 2 faktor dengan variasi karagenan (1,0%, 1,5%, 2,0%, 2,5%) dan variasi kitosan (0,5%, 1,0%, 1,5%, 2,0%). Hasil penelitian menunjukkan bahwa setiap kombinasi konsentrasi karagenan dan kitosan menghasilkan nilai yang berbeda-beda. Kenaikan konsentrasi karagenan dan kitosan tidak selalu berbanding lurus terhadap kenaikan nilai kuat tarik, elongasi, kelarutan, WVP dan morfologi permukaan edible film. Secara umum, dari seluruh perlakuan yang ada dapat disimpulkan bahwa kombinasi karagenan 2,5% dan kitosan 1,0% adalah formulasi terbaik.
Formulasi Tablet Suplemen Spirulina yang Diperkaya dengan Virgin Fish Oil Mata Tuna (Thunnus sp.)
Authors: Huriyah Siti Balqis , Setyaningsih Iriani , Trilaksani Wini
Published: December 2019

Suplemen makanan kesehatan di pasaran saat ini sebagian besar terdiri dari satu jenis bahan baku, sehingga berpotensi hanya memiliki satu manfaat. Spirulina diketahui memiliki kandungan protein tinggi tetapi kadar lemaknya rendah, oleh karena itu dilakukan penelitian tentang pembuatan tablet Spirulina dengan tambahan sumber lain untuk mendapatkan nutrisi lengkap dan seimbang yang sangat diperlukan. Naskah ini melaporkan formulasi Spirulina yang diperkaya dengan mikroenkapsulat virgin fish oil (VFO) mata tuna; yang terdiri dari tiga tahap, yaitu kultivasi Spirulina; preparasi, ekstraksi, dan mikroenkapsulasi VFO mata tuna (Thunnus sp.); serta formulasi tablet. Ada tiga formula dalam hal rasio Spirulina dan mikroenkapsulat VFO mata tuna, yaitu P1 (250:180 mg); P2 (200:230 mg); P3 (150:280 mg). Hasil penelitian menunjukkan bahwa formula P3 merupakan formulasi terbaik berdasarkan karakteristik fisik, aktivitas antioksidan (IC50 133,27 ppm), dan kadar lemak 14,67%. Tablet P3 memiliki proporsi asam amino arginin tertinggi (3,30%) dan asam dokosaheksaenoat (18,03%), serta dapat memenuhi 18,6% dari angka kecukupan gizi asam lemak omega-3 untuk wanita hamil trimester pertama.
COMPLEX PROCESSING OF JERUSALEM ARTICHOKE INTO FUNCTIONAL PRODUCTS
Authors: Bilenka I. , Lazarenko N. , Zolovska О. , Dzyuba N.
Published: December 2019

. The paper presents an analysis of literary sources, which shows the importance of expanding the range of functional products and the relevance of developing technology for the integrated processing of Jerusalem artichoke tubers. For experimental studies used standardized techniques. Using the Ishikawa diagram, the most significant causal relationships of the main factors that influence the quality of healthy food products prepared on the basis of the Jerusalem artichoke are identified. Studies of the amino acid composition of tubers and limiting amino acid established. The main raw material is tested for the content of heavy metals and nitrates. The possibility of excluding the “cleaning” technological operation was experimentally substantiated and confirmed by microbiological studies. We have studied the effect of microwave processing at different processing modes to reduce the microbiological contamination of raw materials. Technologies have been developed for the processing of topinambur into candied peel and fermented products. In the technology of candied peel, to reduce the mass fraction of sugar in the finished product, which is used for sprinkling, a mixture of fructose and pectin was used. Drying was carried out to achieve in the finished candied mass fraction of moisture 14%. The parameters of the Jerusalem artichoke fermentation process were established: temperature - 20 ° С, duration 10 days, the amount of the added starter was 1% of the mass of the prepared raw material. Lactic acid bacteria Lactobacillus plantarum strain AH 11/16 were used as the starter. Fermentation was carried out before the accumulation of titratable acids 0.8 ... 0.9%, in terms of lactic acid. A flow chart of the integrated processing of Jerusalem artichoke tubers into functional food products is presented. A tasting of the developed samples was carried out, which showed high organoleptic indicators of the quality of the finished product. The developed technologies have been tested in restaurant facilities.
DESCRIPTOR-PROFILE METHOD FOR DETERMINING THE QUALITY OF APPLE JUICE SAMPLES
Authors: Lilishentseva A. , Smolyar A.
Published: December 2019

To assess the competitiveness of products abroad, the method of descriptor-profile analysis is widely used, the essence of which is that the complex concept of one of the organoleptic properties (taste, smell, texture) is in the form of a set of simple components (descriptors) that are evaluated by tasters intensity on the appropriate scale. The method allows comparing the sensory characteristics of the products produced with competitors and developing the sensory profiles of the original standards (brands) of products.
The article presents the results of scoring the quality of nine samples of apple juice. As a result of the work carried out by the commission of appraisers of taste, fruit juice descriptors were developed. Based on the marketing research, consumer preferences were studied and the coefficients of significance of fruit juice descriptors were determined. Further, a 50-point scale for evaluating the quality of fruit juices based on the received descriptors was developed. Using the developed point scale, the quality of nine samples of reconstituted apple juice was assessed, as a result of which a sample of apple juice was determined, which scored the maximum number of points and approached the profile of an ideal apple juice.
CHARACTERIZATION OF TURKISH EXTRA VIRGIN OLIVE OILS ACCORDING TO THE THEIR FATTY ACID PROFILE
Authors: Ghanbari Shendia E. , Sivri Ozaya D. , Ozkayab M.
Published: December 2019

In this study, a Mobile Olive Oil Processing Unit (TEM Oliomio 500-2GV, Italy) was designed and used for cold press extra virgin olive oil (EVOO) production at optimum conditions. Local olive varieties “Beylik, Tavşan Yüreği, Uslu and Saurani in Antalya, Manisa, and Hatay provinces of Turkey were investigated in the present study. EVOO was stored before and after paper filtration. Generally, no significant change was observed in fatty acid composition during 60 days of storing and filtration had no detectable effect, but there was significant difference among EVOOs which was obtained from different cultivars. Results of this study showed that fatty acid profile of EVOOs was good method for classification of Turkish olive oils. Beylik and Tavşan Yüreği had higher oleic acid content than other cultivars. Saurani EVOO had the highest content of palmitic acid and stearic acid. The highest amount of linoleic acid was detected in EVOO of Uslu (Manisa) with the range of 12.06-12.09%. Olive oil samples were classified as EVOO according to International olive council (IOC) regulations. Turkish virgin olive oils characterized by low linoleic and palmitic, and high oleic acid contents.
Co-Working Space Concept in the Spatial and Urban Context: A Case Study of ‘Kolektif House’
Authors: MAKAKLI Elif Süyük , YÜCESAN Ebru , OZAR Betül
Published: December 2019

The concept of ‘Work’ and ‘Workplace’ started to change in recent decades
in parallel with developments in information and communication Technologies.
New ways of working have been defined as flexible, mobile and multi-locational.
Co-working spaces have emerged worldwide as a new type of workspace
concept. These places offer a flexible and appropriate work environment with
various usage options. The aim of the study is to define the characteristics and
development of the co-working space concept and analyzing the urban and spatial
context as well as design criteria, the spatial solution, material and furniture
selection of the selected case. In this study the case of ‘Kolektif House’ a co-working
space, in Levent district in İstanbul has been selected, as the location can
be defined as the central commercial district of the city. The space is created by
refunctioning a part of an old factory-building which is evaluated as a sustainable
devolepment project. The data used in this study is based on architectural drawings,
visual materials, interviews, observations, as well as a literature review. The
study demonstrates that changing work habits and user needs created new types
of working place and in the selected case the created value in urban and spatial
context by re-functioning an existed building was found to be positive.
Microfútbol En El Barrio Arborizadora Alta: Entre Lo Recreativo, Lo Deportivo, La Violencia Y La Convivencia.
Authors: Montero Hamilton Hilarion
Published: December 2019

Dicho artículo se realizó a partir de una propuesta etnográfica ejecutada en el barrio Arborizadora Alta, con el fin de reconocer y reflexionar en torno a las dinámicas que se dan socialmente dentro del contexto del juego del microfútbol. La investigación sugiere que al institucionalizarse el microfútbol, es decir, hacerlo un deporte, el mismo llega a generar más problemas de convivencia que soluciones, ya que el mismo aumenta la violencia por múltiples factores tanto interna como externamente; sin embargo también sugiere que al no institucionalizarse y permitirse que el juego se desarrolle en ámbitos más informales, el mismo tienda menos a la violencia y más a la otredad.
Governança ambiental de recursos hídricos - Teorias e práticas - revisão bibliográfica
Authors: Nascimento José Freitas do , Nascimento Ana Paula Branco do
Published: December 2019

O trabalho apresenta conceitos e discussão sobre a questão da governança ambiental voltada aos recursos hídricos. Foi realizada uma revisão bibliográfica sobre o tema identificando trabalhos acadêmicos publicados relacionados ao assunto. Os trabalhos foram analisados com base no título e resumo e classificados de acordo com a sua contribuição em relação aos tópicos do artigo. Evidenciou-se que dentro do tema governança ambiental de recursos hídricos e gestão das águas há uma série de linhas de pensamento e que alguns autores tratam mais do assunto e por isso tiveram seus nomes encontrados em mais de um trabalho e constatou-se também que há muito ainda se estudar sobre o tema, considerando que cada dia a questão da escassez hídrica se torna mais relevante.

Palavras-chave: Gestão das Águas; Governança Ambiental; Recursos Hídricos.
Produção de Argamassas com Substituição Parcial de Areia Natural por Resíduo de PET
Authors: Bigotto Sherington Augusto Milani , Assunção Camila Cassola , Trevisan Mariana , Alcântara Marco Antonio de Morais
Published: December 2019

Com o contexto atual de elaboração de políticas e incentivos para o uso de meios sustentáveis de produção, o objetivo do trabalho foi a produção de argamassas com resíduos de PET triturados em granulometria suficiente para substituírem o agregado miúdo, a areia. Foram feitos quatro traços com 0, 5, 10 e 15 % de substituição de areia natural por resíduo de PET e a avaliação foi feita a partir das resistências a compressão axial e tração à compressão diametral, além da comparação em relação a sua trabalhabilidade e absorção de água. A utilização de PET indicou uma diminuição nos parâmetros de resistência em função do acréscimo da porcentagem de resíduo de PET e também uma queda de trabalhabilidade da argamassa.

PALAVRAS-CHAVE: Argamassa. Resíduos de PET. Trabalhabilidade.
A utilização do agregado fuligem como uma alternativa sustentável para mistura do concreto
Authors: Silva Junior Gean Pereira da , Berti João Vitor Meneguetti , Paschoal Jose Antonio Armani
Published: December 2019

O objetivo deste trabalho é apresentar um estudo experimental desenvolvido em trabalho de conclusão de curso, com a utilização de fuligem escura como material (agregado) secundário na produção de concreto para construções. A utilização da fuligem tem como base fundamental aumentar a resistência do concreto ao atingir a cura, evitando-se a utilização maior de agregados e de cimento, além de que, o uso dessa fuligem é de grande importância para a preservação da natureza, pois, este produto é descartado na natureza sem nenhum tipo de tratamento, o que resulta em prejuízos ambientais.

PALAVRAS-CHAVE: Fuligem escura. Concreto. Sustentabilidade. Substituição.
Avaliação do coeficiente hidráulico de solos arenosos a partir de acréscimos percentuais gradativos de cimento visando a impermeabilização de fundos de aterros e lagoas de estabilização
Authors: Magagnato Matheus Henrique , Hatano Paula Mayumi , Lodi Paulo César
Published: December 2019

Devido à necessidade de impermeabilização de determinadas obras no contexto geotécnico e ambiental, torna-se necessária a criação de mecanismos de controle de parâmetros como o coeficiente de permeabilidade uma vez que este é responsável pelo controle do fluxo que poderá migrar para o subsolo e/ou lençol freático. Nesse sentido, este trabalho avaliou a determinação do coeficiente de permeabilidade de solo arenoso de Bauru (SP) na condição natural e com adição de diferentes percentuais de cimento (2, 4, 6, 8 e 10%). Os ensaios foram conduzidos com permeâmetro de carga variável de acordo com a NBR 14545. O solo utilizado é uma areia média à fina pouco argilosa retirado da Faculdade de Engenharia (FE) na profundidade de 0,95m. Foram utilizadas amostras deformadas e os corpos de prova foram moldados com grau de compactação de 95% e umidade de 10,8%. A moldagem foi realizada em função dos parâmetros ótimos (Proctor Normal) obtidos: massa específica seca máxima 1,955 g/cm3 e umidade ótima 10,8%. Os percentuais de cimento foram adicionados em relação à massa seca do solo. Os principais resultados mostram que a adição de cimento no solo diminui o coeficiente de permeabilidade. Essa diminuição é proporcional ao aumento do teor de cimento. A adição de 2%, por exemplo, apresentou um valor de 2,2 x 10-4 cm/s. Aumentando-se o teor para 6%, esse valor alterou-se para 9,0 x 10-6 cm/s. Finalmente, com 10% de cimento, o valor obtido foi de 2,3 x 10-6 cm/s. Os resultados obtidos estão em concordância com a literatura técnica.

PALAVRAS-CHAVE: Impermeabilização. Solo-cimento. Ensaio de laboratório.
Avaliação da Acessibilidade e Caminhabilidade em Centros de Bairro de São Carlos
Authors: Ribeiro Kaio Cesar da Rocha , Ribeiro Rochele Amorim
Published: December 2019

O planejamento urbano tem se voltado cada vez mais à qualidade de vida dos cidadãos e na forma como as interações com o meio em que vivem afetam esta qualidade de vida. Os centros das cidades possuem uma grande visibilidade e representam um núcleo de interações sociais, portanto boa parte destes estudos têm como foco a avaliação destas regiões, porém de forma isolada. Dessa forma, este estudo identifica as regiões de centro de bairro no município de São Carlos (SP), como extensões das relações que ocorrem nas áreas nucleadas do centro da cidade, observando as características e qualidade das calçadas avaliando a mobilidade dos pedestres e os fatores que impedem ou favorecem a caminhabilidade nos centros de bairro. Os resultados obtidos nos centros de bairro são discutidos e é feita uma análise comparativa entre centros de bairro. Evidenciou-se uma grande diferença quanto à qualidade entre o centro e os centros de bairro, expondo a inferioridade da qualidade de caminhabilidade nos centros de bairro. Relaciona-se a este fato à visibilidade das áreas centrais ao município, à concentração de serviços utilizados pela população e à existência de uma fiscalização e planejamento mais rigorosos nas áreas próximas ao centro. Já nos centros de bairro observa-se a apropriação das calçadas localizadas em frente aos lotes pelos moradores e utilização menos controlada destes espaços, sendo necessária a tomada de medidas da gestão pública e do coletivo de moradores para garantir a qualidade da caminhabilidade.

PALAVRAS-CHAVE: Caminhabilidade. Centros de bairro. Calçadas