bluuebunny/crossref_metadata_2025_split huggingface dataset:
The application of phytoremediation Lemna perpusilla to increase the production performance of Nile tilapia Oreochromis niloticus in a recirculation system
Authors: Utami Rina Hesti , Nirmala Kukuh , Rusmana Iman , Djokosetiyanto Daniel , Hastuti Yuni Puji 
Published: March 2018

ABSTRACTThis study aimed to evaluate the production performance and physiological of Nile tilapia using Lemna perpusilla as a phytoremediator in a recirculation system. A completely randomized design with two treatments and three replications was applied. The treatments were Nile tilapia cultured with L. perpusilla (TL) and without L. perpusilla (L). The experimental fish in this study was the juvenile of Nile tilapia with a body length of 9.98 ± 0.08 cm and an average weight of 36.27 ± 1.07 g. The stocking density was 46 fish/pond and the container size was 275×100×60 cm3 and was separated in two areas using a fiber separator screen of 55.9% area for fish culture and 44.1% for L. perpusilla. The Nile tilapias were reared for 60 days, fed with commercial diet and fresh L. Perpusilla with amount 2% and 1% of biomass, respectively. They were fed three times a day with fresh L. perpusilla at noon and commercial diet in the morning and afternoon. The results showed that the Nile tilapia reared with L. perpusilla phytoremediation had normal physiological condition and production performance. The predominances of this system were lower feed conversion ratio value, more optimal values of feeding efficiency, and higher coefficient of weight uniformity. Keywords: Lemna perpusilla, physiological condition, phytoremediation, production performance. ABSTRAKPenelitian ini bertujuan mengevaluasi kinerja produksi dan fisiologi ikan nila dengan penggunaan Lemna perpusilla sebagai fitoremediator pada sistem resirkulasi. Rancangan penelitian yang digunakan adalah acak lengkap dengan dua perlakuan dan tiga ulangan. Ikan nila dipelihara pada kolam tanpa L. perpusilla (TL) dan ikan nila dipelihara pada kolam dengan L. perpusilla (L). Ikan yang digunakan dalam penelitian ini adalah benih ikan nila dengan panjang baku 9,98 ± 0,08 cm dan bobot rata-rata 36,27 ± 1,07 g. Padat tebar ikan tiap kolam pemeliharaan 46 ekor/kolamdengan ukuran kolam 275×100×60 cm3. Setiap kolam diberi sekat dengan luasan 44,1% L. perpusilla dari luasan kolam. Ikan nila dipelihara selama 60 hari pemeliharaan dengan pakan berupa pakan komersial dan L. perpusilla dengan jumlah pakan masing-masing 2% dan 1% dari biomassa. Pada pagi dan sore hari diberi pakan komersial, dan siang hari ikan diberi pakan L. perpusilla. Hasil penelitian ini menunjukkan bahwa ikan nila yang dipelihara dengan fitoremediasi L. perpusilla menghasilkan kinerja produksi dan kondisi fisiologis yang normal. Keunggulan sistem ini adalah menghasilkan nilai konversi pakan yang lebih rendah, nilai efisiensi pemberian pakan, dan koefisien keseragaman bobot yang lebih tinggi. Kata kunci : fitoremediasi, Lemna perpusilla, kondisi fisiologis, kinerja produksi.
PENGEMBANGAN PALUDARIUM SEBAGAI MEDIA PEMBELAJARAN BIOLOGI POKOK BAHASAN EKOSISTEM DI SMA
Authors: Komala Ratna , Suryanda Ade , Lismana Diana Dia 
Published: March 2018

Paludarium is one the art of landscape design in a container with visualizing terrestrial ecosystem, aquatic ecosystem, and air ecosystem, so looks like a real in nature. Paludarium can be potential as a media of learning ecosytem. The aims of this research was to develop paludarium as Biology learning media on the subject of ecosystem and know the feasibility of paludarium as learning media. The research was held at Senior High School 38 Jakarta with using research and development method. Analysis of potential and problems, paludarium design, validation design, paludarium revision, paludarium try out were the steps in the research. Paludarium received the average score was 84,2% that achieved good interpretation. The average value to limited field try out (36 students) of the test after using paludarium was 82.77. The average value to wide scale field try out (72 students) of the test after using paludarium was 83.54. The mastery of classical learning to limited field try out after using paludarium was 97.2% and to wide scale field try out after using paludarium was 81.9%. The result of this research showed that the paludarium could be utilized as one of Biology learning media on the subject of ecosytem at senior high school.
PENGARUH PENERAPAN MODEL PEMBELAJARAN GROUP INVESTIGATION (GI) TERHADAP KEMAMPUAN BERPIKIR ANALISIS SISWA PADA MATERI PENCEMARAN LINGKUNGAN
Authors: Suryanda Ade , Azrai Eka Putri , Wari Nares 
Published: March 2018

The analytical thinking skill is a part of the higher order thinking process. The analytical thinking skill is needed to solve a problem in learning process. The analytical thinking has 5 process, there are matching, classifying, analyzing errors, generalizing, and specifying. Group Investigation (GI) model is applied in learning to improve the analytical thinking skill of students in environmental pollution. This research aimed to determine the influence of applying Group Investigation (GI) model on student analytical thinking skill in environmental pollution. This research was held on second semester of academic year 2015/2016 on April until May 2016 in Labschool Kebayoran Junior High School. The kind of this research is a quantitative research with quasi experiment methods. The subject of this research is students in Class VII-B and VII-F Labschool Kebayoran Junior High School. The instrument which used are essay post-test with 15 questions and carried out-learning observations sheet. Based on the result of research, obtained the mean of the analytical thinking skills score test in experiment class is higher than control class, that is 78,46 > 69,43. The prerequisite test shows that data normally distributed and class groups derived from a homogenous population. The hypothesis test uses t-test on 0,05 significant level shows that there is an influence of applying Group Investigation (GI) model on student analytical thinking skill in environmental pollution.
MODEL LATIHAN SMASH SEPAKTAKRAW BERBASIS STAND BALL UNTUK ATLET DKI
Authors: Munandar Haris 
Published: March 2018

Tujuan dari penelitian dan pengembangan ini adalah untuk menghasilkan model latihan smash sepaktakraw berbasis standball untuk atlit DKI Jakarta. Penelitian ini menggunakan metode penelitian pengembangan Research & Development (R & D) dari Borg and Gall. Subyek dalam penelitian dan pengembangan ini adalah Atlit DKI Jakarta yang terdiri dari 20 atlit ujioba terbatas (ujicoba kelompok kecil), 40 atlit ujicoba utama (field testing) dan 50 Uji efektifitas model. Uji efektifitas model menggunakan tes smash sepaktakraw untuk mengetahui tingkat kemampuan smash sepaktakraw untuk atlet DKI Jakarta sebelum pemberian treatmen berupa model latihan smash sepaktakraw yang didesain dan untuk mengetahui tingkat kemampuan smash sepaktakraw setelah perlakuan atau treatmen model smash sepaktakraw berbasis standball yang didesain tersebut, dari tes awal yang dilakukan diperoleh tingkat smash sepaktakraw atlit sebesar 11,80, kemudian setelah diberikan perlakuan berupa model smash sepaktakraw berbasis standball diperoleh tingkat kemampuan smash sepaktakraw atlet sebesar 20,68. Maka model latihan smash sepaktakraw ini efektif dalam meningkatkan latihan smash sepaktakraw untuk atlet DKI Jakarta. Berdasarkan hasil pengembangan dapat disimpulkan bahwa: (1) Dengan model latihan smash sepaktakraw berbasis standball untuk atlet DKI Jakarta dapat dikembangkan dan diterapkan dalam latihan smash sepaktakraw (2) Dengan model latihan smash sepaktakraw berbasis standball untuk atlet DKI Jakarta yang telah dikembangkan, diperoleh bukti adanya peningkatan ini di tunjukan pada hasil pengujian data hasil pretes dan posttest adanya perbedaan yang signifikan antara sebelum dan sesudah adanya perlakuan model smash sepaktakraw berbasis standball.
HUBUNGAN KOORDINASI MATA KAKI, DAYA LEDAK OTOT TUNGKAI DAN PERCAYA DIRI DENGAN HASIL LARI SPRINT 100 METER PADA ATLET PPLP BANGKA BELITUNG
Authors: Anggara Topan 
Published: March 2018

Abstrak : Penelitian korelasi ini bertujuan untuk memperoleh informasi tentang, ada tidaknya hubungan antara Koordinasi mata kaki, daya ledak otot tungkai, dan percaya diri dengan hasil lari sprint 100 meter pada atlet PPLP Bangka Belitung. Penelitian ini menggunakan pendekatan kuantitatif, metode survei. Subjek dalam penelitian ini adalah klub PPLP Bangka Belitung sebanyak 30 Orang. Pengambilan sampel dilakukan dengan menggunakan teknik Total Sampling. Berdasarkan Uji hipotesis, penelitian ini menyimpulkan terdapat hubungan antara koordinasi mata kaki dengan hasil lari sprint 100 meter pada atlet PPLP Bangka Belitung sebesar 0,939. Terdapat hubungan antara daya ledak otot tungkai dengan hasil lari sprint 100 meter pada atlet PPLP Bangka Belitung sebesar 0,937. Terdapat hubungan antara percaya diri dengan hasil lari sprint 100 meter pada atlet PPLP Bangka Belitung sebesar 0,981. Pengujian hipotesis yang terakhir terdapat hubungan antara koordinasi mata kaki, daya ledak otot tungkai dan percaya diri secara bersama-sama dengan hasil lari sprint 100 meter pada atlet PPLP Bangka Belitung sebesar 0,991.
ETIKA BISNIS ISLAM PEDAGANG SAPI DAN DAMPAKNYA TERHADAP KESEJAHTERAAN PEDAGANG DI KECAMATAN MASBAGIK KABUPATEN LOMBOK TIMUR
Authors: Hulaimi Ahmad 
Published: March 2018

Penelitian ini bertujuan untuk mengetahui etika bisnis Islami yang diterapkan dan dampaknya terhadap kesejahteraan pedagang sapi di Kecamatan Masbagik Kabupaten Lombok Timur. Metode penelitian yang digunakan adalah metode penelitian kualitatif deskriptif dengan jenis penelitian lapangan (field research). Hasil penelitian ini menemukan bahwa dari kajian terhadap etika bisnis Islam yang diterapkan oleh pedagang sapi di Kecamatan Masbagik belum sepenuhnya menerapkan prinsip etika bisnis Islam, Sedangkan dari kajian terhadap dampak etika bisnis Islam terhadap kesejahteraan, tidak semua pedagang sapi yang ada di Kecamatan Masbagik kabupaten Lombok timur mendapatkan kesejahteraan yang Islami karena belum memenuhi kebutuhan dharuriyatnya (sholat dan haji). Sebagainnya lagi sudah mendapatkan kehidupan yang baik. Karena sudah dapat memenuhi kebutuhan dharuriyatnya. Mereka telah mengatakan berbahagia, karena telah bersyukur atas rizqi yang diterimanya
DISKURSUS KALENDER HIJRIYAH GLOBAL PASCA KONGRES ISTAMBUL TURKI 2016
Authors: Rohmah Nihayatur 
Published: March 2018

; In May 2016, Muslims from several countries held the International Hijri Calendar Unity Congress in Istanbul Turkey. At the end of the congress, the result of the voting concluded and published the single calendar system (singular calendar) based on the visibility of the new moon. Calendar is an expression of the collective activity of the rhythm and reflects the resilience and the strength of a civilization. So the existence of the calendar is accurate and consistent as an civilization imperative and is a prerequisite for a civilization to exist and thrive. The characteristic of the revival civilization is when the civilization was able to answer the challenges of the past. Civilization is a mechanism in the social organization, so there is no problem that can not be settled or compromised unless the issue by political or economic interests. There is no difference with the other calendar, the Islamic calendar is a reality that issued by a handful of elite (read: the ruling group of important people in the community). A public position in the affinity people are consumers of course-and practice-calendar produced by their elite. The feature of Hijrah calendar in a country is a clear reflection of the particulars of their elites. Hijrah calendar unity is nothing but a fruit of the unity of authority, and the authority here is Ulil Amri.
Irrigated Sweet Sorghum Yield as Affected by Plant Spacing and Row Width
Authors: Ottman M.J. , Ray D.T. 
Published: March 2018

Core Ideas
The highest biomass yield was at the closest three spacings in 2010 and the closest four spacings in 2012.The highest theoretical sugar yield was at the closest four spacings both years.Row width did not affect biomass or theoretical sugar yield.Stalk diameter, leaves per stalk, weight per stalk, stalks per plant, and juice extraction increased in response to greater plant spacing and row width.Biomass and theoretical sugar yield were more tolerant of greater distance between plants and wider row spacing than has been reported in other regions.
Greater plant spacing and row width than is commonly used in sweet sorghum [Sorghum bicolor (L.) Moench] can reduce lodging and facilitate the use of a sugarcane harvester in the case of greater row width. The hypothesis for this study is biomass and theoretical sugar yield are more tolerant of greater distance between plants and wider row spacing in the desert Southwest than other climatic regions with less insolation. The study was conducted with the sweet sorghum variety ‘M81E’ in 2010 and 2012 at the Campus Agricultural Center in Tucson, AZ, on a Gila very fine sandy loam (coarse‐loamy, mixed, superactive, calcareous, thermic Typic Torrifluvents). The treatments consisted of five within‐row plant spacings (20, 25, 51, 102, and 203 cm) at 102 cm row width and two row widths (102 and 203 cm) at 20 cm plant spacing. The highest biomass yield was at the closest three spacings in 2010 and the closest four spacings in 2012. The highest theoretical sugar yield was at the closest four spacings both years. The yield of the 203 cm plant spacing compared to the others averaged 59% for biomass and 64% for sugar. Row width did not affect biomass or theoretical sugar yield. Stalk diameter, leaves per stalk, weight per stalk, stalks per plant, and juice extraction increased in response to greater plant spacing and row width. Biomass and theoretical sugar yield were more tolerant of greater distance between plants and wider row spacing than has been reported in other regions.
Kinetics of Molybdenum Adsorption and Desorption in Soils
Authors: Sun Wenguang , Selim H. Magdi 
Published: March 2018

Much uncertainty exists in mechanisms and kinetics controlling the adsorption and desorption of molybdenum (Mo) in the soil environment. To investigate the characteristics of Mo adsorption and desorption and predict Mo behavior in the vadose zone, kinetic batch experiments were performed using three soils: Webster loam, Windsor sand and Mahan sand. Adsorption isotherms for Mo were strongly nonlinear for all three soils. Strong kinetic adsorption of Mo by all soils was also observed, where the rate of retention was rapid initially and was followed by slow retention behavior with time. The time‐dependent Mo sorption rate was not influenced when constant pH was maintained. Desorption or release results indicated that there were significant fractions of Mo that appeared to be irreversible or slowly reversibly sorbed by Windsor and Mahan. X‐ray absorption near edge structure (XANES) analysis for Windsor and Mahan soils indicated that most of Mo had been bound to kaolinite, whereas Webster had similar XANES features to those of Mo sorbed to montmorillonite. A sequential extraction procedure provided evidence that a significant amount of Mo was irreversibly sorbed. A multireaction model (MRM) with nonlinear equilibrium and kinetic sorption parameters was used to describe the adsorption–desorption kinetics of Mo on soils. Our results demonstrated that a formulation of MRM with two sorption sites (equilibrium and reversible) successfully described Mo adsorption–desorption data for Webster loam, and an additional irreversible reaction phase was recommended to describe Mo desorption or release with time for Windsor and Mahan soils.Core IdeasMolybdenum sorption was kinetic and strongly nonlinear in three different soils.Adsorption and desorption of Mo on soils were well described using a multireaction model.The XANES analysis for Windsor and Mahan soils indicated that most of Mo was bound to kaolinite.
Comparative Study of a Long‐Established Large Weighing Lysimeter and a State‐of‐the‐Art Mini‐lysimeter
Authors: Ruth Conall E. , Michel Dominik , Hirschi Martin , Seneviratne Sonia I. 
Published: March 2018

Core Ideas
We saw generally high agreement between lysimeters, despite substantial design differences.
Large‐lysimeter processing was optimized in light of highly resolved mini‐lysimeter data.
Smoothing filter and setting of ET to zero in wet hours was useful for the large lysimeter.
Lysimeter precipitation types were identified using an opto‐electric precipitation monitor.
Protrusion of the large lysimeter may cause precipitation under‐catch by flow distortion.
Weighing lysimeters are a well‐established means of accurately obtaining local‐scale estimates of actual evapotranspiration (ET), precipitation, and seepage within soils. At the Rietholzbach research catchment in northeastern Switzerland, two weighing lysimeters are in operation. One is a recently installed state‐of‐the‐art monolithic mini‐lysimeter with a tension‐controlled lower boundary; the other is a large backfilled free‐drainage lysimeter in operation since 1976. For this study, the mini‐lysimeter measurements were processed using the Adaptive‐Window and Adaptive‐Threshold (AWAT) filter. The resulting water‐balance estimates were then compared with those of the lower resolution large lysimeter, whose processing has remained unchanged since its installation. A number of additional, retrospectively applicable processing steps for the large lysimeter were then tested to mitigate the main sources of error for this instrument. Those found to be most beneficial were the application of a 10‐min moving average to the mass measurements and the setting of ET and condensation to zero in hours with liquid precipitation. In spite of the differences in design, a generally close agreement between the two lysimeters was observed, which was further improved with the optimized large‐lysimeter processing. A comparison of the lysimeter mass increases associated with liquid precipitation further revealed, however, that the large lysimeter experiences a previously unknown under‐catch of about 11.5%, which could also be important for other lysimeter facilities. This under‐catch led to a reduction in large‐lysimeter seepage during the analyzed period, although the ET flux was not found to be affected.
A Forest Evapotranspiration Paradox Investigated Using Lysimeter Data
Authors: Teuling Adriaan J. 
Published: March 2018

Core Ideas
There is disagreement in the sign of reported forest impacts on evapotranspiration.
Independent lysimeter data show higher evaporation over forest.
Lysimeter data show a strong effect of tree age and height on average evapotranspiration.
In spite of the large number of studies on the role of forests in affecting local and global water and energy cycles, conflicting reports on even the sign of the change in evapotranspiration over forest compared with non‐forest land cover can be found depending on the type of data used. Whereas studies based on closure of the water balance suggest higher evapotranspiration over forests, studies based on turbulent exchange and/or energy balance closure suggest generally higher latent heat flux over non‐forest sites. In this study, this forest evapotranspiration paradox was investigated using data from four long‐term lysimeter stations in western Europe with contrasting land cover conditions. The results were consistent with evapotranspiration estimates from catchment‐scale water balance studies rather than with eddy covariance estimates. They were also found to be largely consistent with a model previously proposed to predict forest cover effects on evapotranspiration. The results of this study suggest that eddy covariance data should be treated with care when used to assess long‐term average water balance impacts of land use.
Uncertainty assessment of future projections on water resources according to climate downscaling and hydrological models
Authors: Lee Moon-Hwan , Bae Deg-Hyo 
Published: March 2018

Abstract
Quantifying the uncertainty of future projection is important to assess the reliable climate change impact. In this sense, this study is aimed at investigating the uncertainty sources of various water variables (seasonal dam inflow, 1-day maximum dam inflow, and 30-day minimum dam inflow) according to downscaling methods and hydrological modeling. Five regional climate models (RCMs), five statistical post-processing methods and two hydrological models were applied for the uncertainty analysis. The changes for seasonal dam inflow are 0.1, 58.8, 5.1, and 1.1 mm for the SWAT model and 2.1, 76.1, −8.5, and −2.9 mm for the VIC model in spring, summer, autumn, and winter, respectively. The effects of the hydrological model is smaller than that of RCM for future projections of the seasonal dam inflow. The changes of annual 1-day maximum dam inflow vary according to the selection of RCM whereas the changes of annual 30-day minimum dam inflow are sensitive to the selection of hydrological model. The RCM is the dominant source of uncertainty of all seasonal dam inflow (except for winter) and high flow, whereas the hydrological model is the dominant source of uncertainty in winter dam inflow and low flow. Considering these results, the appropriate multi-model ensemble chain according to target variable will be necessary for reliable climate change impact assessment.
Ecological evaluation of reach scale channel configuration based on habitat structures for river management
Authors: Choi Mikyoung , Takemon Yasuhiro , Yu Wansik , Jung Kwansue 
Published: March 2018

AbstractEcological evaluation of riverbed geomorphology is essential for environmental assessment of river works as well as for establishment of target images in river management planning. In this paper, we analyzed inter-relationships between the reach-scale channel configuration (RSCC) and habitat structure on the riverbed based on the historical changes of riverbed geomorphology on the Kizu River in Japan. The analyses used nine sets of aerial photographs taken from 1948 to 2012, which resulted in a total of eight RSCC types classified as Single Sinuous, Semi-Wandering-Straight, S-W-Sinuous, Wandering-Straight, W-Sinuous, Bifurcated-Straight, B-Sinuous, and Braided Sinuous. Aquatic habitats were classified into four lotic habitats (Main Slow, Secondary Slow, Gently Bending Riffle, and Sharply Bending Riffle) and four lentic habitats (Bar-Head Wando, Bar-Tail Wando, Active Pond, and Terrace Pond), and their richness and diversity indices were analyzed in relation to RSCC types. The results showed that Braided Sinuous channels had the maximum number of habitats, and Wandering-Straight and Bifurcated-Sinuous channels showed higher habitat diversity than the others. These results indicated that the target image of the Kizu River management will be Braided-Sinuous channels in terms of habitat abundance, whereas they will be Wandering-Straight and Bifurcated-Sinuous channels from the aspect of habitat diversity.