bluuebunny/crossref_metadata_2025_split huggingface dataset:
Kajian Karakteristik Proses Pengomposan Limbah Tanaman Jagung yang Diberi Tambahan Kipahit dan Pupuk Kandang Sapi
Authors: Dwiratna Sophia , Suryadi Edy , Kendarto Dwi Rustam , Amaru Kharistya , Sugandi Wahyu Kristian , Hartono Nur Ilham Tri 
Published: January 2022

Corn waste, tithonia and cattle manure are three materials that have different characteristics. These charactersitics differences if used together in the composting process will complement each other and potentially produce good compost. This research was conducted to find out how the composting process characteristics by utilizing the three raw materials with different characteristics in a composting process. The composting process was carried out using a berkeley method which was stacked with a layered bioreactor. The decomposition process that occurs involving decompisted bacteria, so the composting process runs aerobically. Aerobic composting corn waste with the addition of tithonia and cattle manure finished in about 4-5 weeks to become a mature compost. The quality of the compost produced is quite good because the content contained in compost fulfills most of the quality standards regulated in SNI 7763: 2018. The addition of tithonia and cattle manure has a positive impact in the process of composting corn plants in terms of duration and good compost. Key words : aerobic, cattle manure, composting, corn waste, tithonia
Uji Kinerja Alat Penghancur Kohe Kambing Tipe Basah
Authors: Saputra Aldi , Lanya Budianto , Suharyatun Siti , Haryanto Agus 
Published: January 2022

Goat manure is one of the manure which is widely used in agriculture. Due to its hard physical nature, goat manure needs to be crushed before being applied to facilitate the decomposition process. Currently, there is a wet type of goat dung grinder or crusher used by the community. This study aims to test the performance of the goat manure crusher based on the engine rotation speed (rpm). The research was conducted using 3 different rotation speed of the blade shaft, namely 968 rpm, 1208 rpm, 1454 rpm. The experiment parameters included working capacity, fuel consumtion, and degree of crushing. The results showed that the wet type goat manure crusher had the best working capacity at 1208 rpm blade rotation with 255,78 kg/h working capacity, 1.43 lt/h fuel consumption, and 99.3% crushing uniformity. Keywords: manure, rpm, wet goat manure crusher
Penambahan Tepung Ubi Ungu (Ipomea batatas L.) Terhadap Sifat Organoleptik dan Kimia dalam Pembuatan Pizza
Authors: Wati Andra Tersiana , Intani Ertha Martha 
Published: January 2022

ABSTRACT Purple sweet potato flour (Ipomea batatas L.) can be developed as a partial substitute in processing wheat flour-based food products such as pizza. Pizza has a thin round shape with the addition of various toppings on it. This study aims to determine the effect of adding purple sweet potato flour in pizza making on the organoleptic and chemical characteristics of the resulting pizza product. There were 6 variations of pizza with purple sweet potato flour substitution concentration of 0%, 10%, 20%, 30%, 40% and 50%. This study used a completely randomized design method with two repetitions. The resulting pizzas were tested sensory including preference tests as well as differentiation tests (sweet potato flavor, sweet potato aroma, dark purple color, and soft texture). Furthermore, the selected pizzas were analyzed chemically, including proximate analysis and antioxidant activity. Based on statistical tests showed that the addition of purple sweet potato flour was quite favorable at a concentration of 30% with a water content of 44.45%, ash content of 3.48 (% db), protein content 10.26 (%db), carbohydrate content 74.89 (%db) with energy 239.58 (cal/100 g) and antioxidant activity (RSA) 71.26%. Keywords: antioxidant activity, pizza, purple sweat potato flour, purple sweat potato, sensory test
Penentuan Daya Tampung Sungai Mayang Terhadap Beban Pencemaran Menggunakan Persamaan Streeter-Phelps
Authors: Wahyuningsih Sri , Novita Elida , Paradiba Kiki 
Published: January 2022

The Mayang River in Jember Regency has a length of approximately 145.50 km which is the longest river and can irrigate an area of 5,860 hectares. The use of the Mayang River by the community can produce waste, both domestic waste, agricultural waste, and livestock waste. Waste that enters directly into river bodies can cause a decrease in river water quality and can create a pollution load. Therefore, the measurement of the load capacity of the Mayang River was conducted. Mayang River water samples were taken using the grab sampling method, while the river's capacity was determined using the Streeter Phelps method. The results showed that the average value of the Mayang River pollution load was 219,483 kg/day. Some of the parameters used to determine the carrying capacity of the river are the daily deoxygenation rate of 0.137 mg/L and the dailyy reaeration rate of 1.097 mg/L. It has a critical point (tc) of 0.186, a critical distance (Xc) of 4.753 km, and a critical deficit (Dc) of 0.281 mg/L. Based on these parameters, it is concluded that the Mayang River can accommodate a pollution load of 1.5 kg/day and can carry out proper purification. Keywords : grab sampling method, Streeter Phelps, the deoxygenation rate, the reaeration rate
Uji Kinerja Mesin Pengiris Singkong Tipe Vertikal
Authors: Ichniarsyah Annisa Nur , Widiono Eka , Purboningtyas Titis Pury 
Published: January 2022

Several efforts to improve the efficiency and effectiveness of slicing cassava machine had been conducted. One of them including the development of a prototype cassava slicing machine. This machine has types and classification based on slicing capacity. The purpose of this study was to conduct a machine performance test (verification test, performance test, and ergonomics test), to compare its performance with SNI 0838-1:2014, to analyze the constraints of a vertical cassava slicing machine. A quantitative research approach and descriptive explanatory method were used by observing, measuring, and calculating, the testing of cassava slicing machine. Verification test was to check the suitability of the type and type of engine, motor, transmission type, slicing unit, engine frame, and other supporting components in accordance with the specifications. The performance results of the slicing machine displayed that its capacity was 18.51 kg/hour and performance efficiency of 74.05%. The slicing test obtained an average thickness was 0.73 mm, uniformity level of 64.2%, and damage rate around 9.67%. Ergonomics tests showed that the machine was quite in accordance with the comfort of the operator. There were some obstacles that need evaluations such as the difficulty in adjusting slicing blade, transmission, and technical specifications of the cassava slicing machine. Therefore, the cassava slicing machine needed improvement so that it conforms to the requirements that refer to SNI 0838-1:2014. Keywords: cassava, performance test, slicing, slicing machine, testing
Perbandingan Kualitas Fermentasi Biji Kakao dengan Penambahan Kultur Campur dan Kultur Tunggal Lactobacillus brevis
Authors: Nes Rannes Ran , Setiawan Andree Wijaya , Handoko Yoga Aji 
Published: January 2022

Cocoa beans are one of the plants whose processing process is through fermentation to get quality cocoa beans. The purpose of this study was to determine the quality of fermented cocoa beans with the addition of mixed cultures of Saccharomyces cereviseae, Lactobacillus plantarum, Lactobacillus fermentum, Acetobacter orientalis, Acetobacter tropicalis, and single culture of Lactobacillus brevis and determine the best quality of fermented cocoa beans between mixed culture and single culture of Lactobacillus brevis. This study used a randomized block design with 7 treatments and 4 replications. Each treatment was carried out by adding a single culture and mixed culture in the logarithmic growth phase with a culture concentration of 5%, 10%, and 15%, and as a control, fermentation was conditioned to occur naturally. Observation parameters are pH, temperature, water content, yield, total fat content, total sugar content, lactic acid content, cut test, and organoleptic. The results of the fermentation showed that a good quality was obtained in the P5 treatment (addition of 10% mixed culture) which was perfectly fermented 94% and entered the quality class 1 of SNI 2323:2008. Keywords: cocoa, fermentation, mixed culture, single culture, Lactobacillus brevis
Espacio público y tejido social.
Authors: López Ignacio , Tejeda Isabel 
Published: January 2022

Bajo el título “Espacio público y tejido social: arte colaborativo en tiempos de crisis”, el equipo editorial de “Umática, Revista sobre creación y análisis de la imagen” y el proyecto de Investigación “El barrio como escenario de pedagogías críticas y arte colaborativo”(PGC2018-094351-B-C42), del Ministerio de Economía y Competitividad, presentan un conjunto de aportaciones críticas que revisan las claves teóricas, metodológicas y prácticas asociadas al empuje que desde el impacto de la crisis de 2008 han recibido aquellas políticas participativas o colaborativas en la gestión y en la creación artística vinculadas al barrio como contexto específico. La aportación de la portada del número por parte de Rogelio López-Cuenca supone, más allá del honor con el que los responsables de esta edición la reciben, toda una declaración de intenciones sobre el horizonte al que aspiran las revisiones mencionadas. La imagen se corresponde con la instalación Mapa de Valencia (2015) [1]. Una instalación que documenta el trabajo del colectivo implicado en el taller No/W/Here, coordinado por López-Cuenca y con la colaboración del IVAM y de la UPV[2], y que da cuenta de un cambio de paradigma en el que el impacto de la intervención artística se vislumbra en aquellos lugares que nuestro entorno capitalizado deja al descubierto…
“Corkwood”, un nuevo material natural, renovable y sostenible. Una materia prima única para comunicar naturaleza y sostenibilidad
Authors: Sánchez Martín Miguel Angel 
Published: January 2022

Está científicamente probado que la exposición al ruido tiene efectos negativos no solo en el confort sino también en la salud de las personas. En este sentido, “España se sitúa entre los países más ruidosos del mundo”. Por ello, es necesario disponer de un buen aislamiento y acondicionamiento acústico para garantizar el bienestar y la salud de las personas. Esta investigación está enfocada a desarrollar un material con propiedades fonoabsorbentes sin precisar complejos sistemas de mecanizado ni renunciar al diseño. Además estas cualidades de aislamiento permiten un ahorro energético en las viviendas lo que le aporta un valor añadido a la estética del lugar.
Una mirada “cromática” al Diseño industrial sudamericano
Authors: Neumarkt Alan 
Published: January 2022

El Diseño Industrial en Sudamérica puede observarse desde diferentes puntos de vista, tanto en su recorrido histórico como también en su distribución geográfica siendo el territorio sudamericano una conjunción de diez países y diversas culturas e influencias, variedad de corrientes inmigratorias y diferentes mestizajes.
Esta visión “cromática” coincidirá en que en el diseño sudamericano lo “híbrido” está siempre presente y que la relación diseñador-proyecto con (o contra) empresa-producción genera un grado de dificultad mayor en la búsqueda de identidad. En el diseño puede encontrarse la tensión centro-periferia en su fase de proyecto, o la tensión inversa, periferia-centro, en sus etapas de industrialización.
Physiological vitality of Norway spruce (Picea abies L.) stands along an altitudinal gradient in Tatra National Park
Authors: Jamnická Gabriela , Konôpková Alena , Fleischer Peter , Kurjak Daniel , Petrík Peter , Petek Anja , Húdoková Hana , Fleischer Peter , Homolová Zuzana , Ježík Marek , Ditmarová Ľubica 
Published: January 2022

Abstract
Nowadays, a large area of Norway spruce forest stands in Europe is disturbed by windstorm and, subsequently, bark beetle outbreaks. We investigated the state of three disturbed spruce stands along an altitudinal gradient in Tatra National Park (Slovakia) through various physiological processes. Tree-growth characteristics, the mineral nutrition in the needles, and photosynthetic efficiency were assessed. Two techniques of chlorophyll a fluorescence and analyses of assimilatory pigments were used to detect the changes in photosynthesis functioning. Also, the heat sensitivity of photosystem II was tested. Our results showed that these stands are located in nutrient-poor environments. We recorded similar contents of nitrogen, phosphorus, potassium, sodium, zinc, and iron in all stands. Down the vertical transect, the contents of calcium, magnesium, and manganese significantly decreased and the non-essential aluminium increased. Based on stem circumference measurements, water deficit occurred during the vegetation season in all stands, but with the smallest magnitude highest U–stand. We found some photosynthetic constraints: slightly lower chlorophyll contents in all stands were recorded; however, seasonal dynamics with increasing chlorophyll concentration in the highest U–stand were observed. Moreover, the photochemistry of the lowest D–stand was the most negatively influenced by simulated heat, as the photosynthetic performance index, and the density of the active reactions centres significantly decreased and the values of the K–step and basal fluorescence increased. Therefore, we can conclude the different levels of physiological vitality in these naturally damaged spruce stands, with the best physiological performance of the trees in the highest stand.
Impact of the European bark beetle Ips typographus on biochemical and growth properties of wood and needles in Siberian spruce Picea obovata
Authors: Konôpková Alena , Vedernikov Konstantin E. , Zagrebin Egor A. , Islamova Nadezhda A. , Grigoriev Roman A. , Húdoková Hana , Petek Anja , Kmeť Jaroslav , Petrík Peter , Pashkova Anna S. , Zhuravleva Anastasia N. , Bukharina Irina L. 
Published: January 2022

Abstract
European spruce bark beetle Ips typographus is an important driver of ecological processes in spruce stands, with severe effects on forestry economies. To prevent bark beetle outbreaks, early detection of infestations is a crucial step in forest management. It is expected that bark beetle infestation modifies biochemical composition of wood and needles, alters physiological responses in the early stage of infestation, which results in the reduction of tree growth and ultimately a tree death. Therefore, we studied the differences in biochemical composition of wood, content of photosynthesis-related pigments, shoot morphology, and growth between the healthy Siberian spruce trees (Picea obovata) and trees which were infested by I. typographus. The study was performed in five experimental plots established in the south of the Udmurt Republic in the European part of the Russian Federation. Three infested and three non-infested trees were chosen on each plot. Our results showed no significant effect of bark beetle infestation on the content of main structural components of wood – holocellulose (cellulose and hemicellulose) and lignin. On the other hand, we found differences in the content of extractive substances in the wood. Specifically, we found a higher tannin content in the non-infested trees. The content of photosynthesis-related pigments differed between the non-infested and infested trees as well. Unexpectedly, bark beetle infestation caused the overproduction of both pigment types rather than their degradation. Moreover, we observed that a higher amount of total extractive substances positively affected the incremental growth, whereas tannins supported the growth of shoots and needles.
Am I getting my point across? Microstructure of English classroom discourses by Acehnese teachers
Authors: Keumala Meta , Fitrisia Dohra , Samad Iskandar Abdul , Gani Sofyan Abdul 
Published: January 2022

For English teaching practice, productive talks that spur students’ comprehension, creativity, and problem-solving ability are vital. This research aimed at finding out the spoken discourse based on six phases of microstructure in English classrooms. The data were obtained recordings and observations of two English teachers, chosen through purposive sampling, from Islamic senior high schools in Aceh. The data were concerned with the lexical density or the ratio of content to grammatical or function words within a clause. They were analyzed through thematic analysis which consists of five steps: data familiarization, code generation, theme search, themes revision, and theme definition. It was found that the total lexical density obtained by the first teacher in Class A was 63.66% and in class, B was 66.52%, while the second teacher in Class A was 71. 74% and in Class B was 68.12%. The second teacher 2 in Class A had a higher lexical density than the first teacher even though both of them are considered to produce a high lexical density of around 60-70%. The formality of spoken discourse of the two teachers shows that the first teacher produced 172.5 while the second teacher produced 184. It means that the second teacher's spoken discourse was more formal than the first teacher’s discourse. To analyze the utterances of teachers and to find the density of language used in the classrooms during the teaching and learning process is important because they implicitly inform whether the language used is understandable for the students or not.
Non-millennial teachers’ strategies in coping with the online teaching during the COVID-19 pandemic
Authors: Sasongko Febry Khunto , Kristina Diah , Asib Abdul 
Published: January 2022

This article discusses the strategies used by five non-millennial teachers (aged 54-59 years old) of a junior high school in coping with the online teaching during the COVID-19 pandemic, in Ngawi, East Java, Indonesia. The teachers were interviewed, and the data were transcribed and analyzed by creating a data repository, expanding the codes, describing the coded data, and drawing conclusions. The results revealed that the teachers had several strategies used, which were to increase students’ interest in learning, provide students with knowledge and attention, create efficient learning resources, and use SIMPEL (Sistem Informasi Manajemen Pembelajaran or Learning Management Information System), which is specifically available only in Ngawi. SIMPEL was specially developed by the Ngawi district education office, to ensure that the learning processes in Ngawi Regency continue to run optimally during the COVID-19 outbreak. SIMPEL substituted the use of online YouTube videos and materials because the materials were already provided by the system, decreasing the need for the teachers to depend on other resources. Despite these teachers also using other online platforms, hence issues such as the slow internet connection, running out of quotas and blackouts, hindered their efforts to use these platforms at times. Hence, WAG was the most used media to conduct their online learning due to its simplicity and availability. These teachers continued to strive to learn digital technologies ever since they changed from their previous face-to-face teaching strategies.
Importancia de la obtención de recubrimientos para alimentos a partir de residuos agrícolas del Valle de Ciudad Serdán, Puebla México
Authors: Bernabé Salas María Del Rosario , Juárez Cadena José Felipe Fausto , Rivera Cruz José Luis , Cruz Guerra Elías , Hernández Jiménez José Pascual 
Published: January 2022

La preocupación de la industria de los alimentos por obtener o encontrar nuevas alternativas para recubrir los alimentos postcosecha que tengan mayor durabilidad en anaquel, la tendencia de la población por tener estilos de vida saludables y con la conciencia de consumir alimentos listos para degustar y que sean mínimamente procesados, las cifras alarmantes de la FAO en cuanto al desperdicio de alimentos por no ser conservados adecuadamente, hace que se lleven a cabo investigaciones en las cuales se analicen diversos desechos agrícolas para obtener recubrimientos que sean biodegradables y prolonguen la vida de anaquel de los productos hortofrutícolas. En la región de Ciudad Serdán, se tienen diferentes fuentes de residuos agrícolas con potencial de utilización para la elaborar películas y/o recubrimientos para ser aplicados a alimentos. Esta investigación muestra el trabajo realizado con la pulpa de calabaza de castilla utilizada como una alternativa para la elaboración de recubrimientos de frutas y hortalizas con la finalidad de prolongar su vida de anaquel. Uno de los resultados obtenidos es un recubrimiento a partir de la pulpa de calabaza de castilla que es desechada por los agricultores de la zona, además de lograr registrar una solicitud de patente de este procedimiento ante el Instituto Mexicano de la Propiedad Industrial.
Efectividad de dos tratamientos alternativos (própolis et allium sativum) en el control de mastitis subclínica bovina, en el departamento de Estelí Nicaragua, febrero 2020
Authors: Landero Amaya Jaime Antonio , Castillo Tórrez Dayana Marina , Altamirano Silva Pamela Guadalupe 
Published: January 2022

El estudio experimental se realizó en Estelí, en las fincas: “Los Chilamates” y “Tres ojos de agua”, el objetivo fue evaluar el efecto del Propóleos y el ajo en casos de mastitis subclínica bovina. Entre las variables en estudio se contemplan: diagnóstico de mastitis subclínica, bacterias predominantes, eficacia de los tratamientos sobre las bacterias y análisis beneficio costo. El experimento consistía en la aplicación de 5 ml de cada tratamiento en el pezón más afectado de cada vaca con mastitis, previamente se realizaron pruebas para diagnosticar cuáles de las vacas eran las que estaban positivas. Durante los cinco días de aplicación del tratamiento estuvimos extrayendo muestra de leche para posteriormente realizar cultivos bacteriológicos y observar si durante la aplicación del tratamiento surgían cambios. Para obtener nuestros resultados, se realizó un estudio descriptivo de corte transversal para la variable incidencia de mastitis obteniendo como resultados un 29%. Se realizó una tinción de Gram para identificar las siguientes bacterias: Staphylococus aureus 12 %, Escherichia coli 25 %, Streptococcus dygalactie 17 %, Streptococcus agalactie 21 %, Pseudomonas 25 %. Se procedió a realizar un análisis de varianza para la variable efectividad de los tratamientos, el resultado fue el siguiente: el valor de P fue 0.001 indicándonos que hay diferencia estadística entre cada tratamiento obteniendo mejor resultado el propóleos, mientras que el tratamiento a base de ajo dio resultados negativos. Al hacer un análisis beneficio costo pudimos constatar que el propóleos es una opción eficaz y económica, dado que se obtuvo un 1.43% en índice de ganancia, es por esta razón que se recomienda utilizar el propóleos en casos de mastitis subclínica
Family Perceptions Toward Muslim Corpses Management of COVID-19 Patients in Padang City
Authors: Hidayat Taufik , Susanti Rika , Zhuhra Rahma Tsania 
Published: January 2022

Dr. M. Djamil Hospital as a referral center of COVID-19 cases in West Sumatera has a COVID-19 protocol in managing the corpses of COVID-19 patients. This study explores factors that affect patient’s family perception toward procedures of handling COVID-19 corpses. We held a qualitative study with phenomenological design to explore the family perceptions toward Muslims corpses management of COVID-19. Ten deep interviews were conducted with the ones who had their family members died by probable or confirmed COVID-19 and the corpses were managed according to COVID-19 protocols. Data triangulation was accomplished via in depth-interviews with two mortuary officers in Dr. M. Djamil Hospital. Three main themes were identified are the corpse management in COVID-19 patients, contributing factors regarding burial procedure during the COVID-19 pandemic, and challenges in managing corpses of COVID-19 patients