bluuebunny/crossref_metadata_2025_split huggingface dataset:
ANALISIS KANDUNGAN MERKURI (Hg) PADA PADA EKOSISTEM SUNGAI WAELATA DAN SUNGAI ANAHONI YANG TERDAMPAK AKTIFITAS PERTAMBANGAN EMAS DI PULAU BURU, MALUKU
Authors: . Irsan , Male Yusthinus T. , Selanno Debby A. J. 
Published: July 2021

Sungai Waelata dan Sungai Anahoni merupakan dua sungai tempat beroperasinya trommel untuk pengolahan material emas Gunung Botak dan Gogrea. Melalui aliran sungai, limbah merkuri hasil pengolahan trommel terangkut dan terbawa ke muara yang pada akhirnya akan mencemari perairan laut Teluk Kayeli. Kerang Polymesoda erosa merupakan salah satu jenis kerang yang sering digunakan dalam pemantauan logam berat merkuri, terutama pada wilayah muara sungai. Penelitian ini bertujuan untuk menganalisis kadar logam berat merkuri(Hg) pada air, sedimen dan kerang Polymesoda erosadi Muara Sungai Waelata dan Sungai Anahoni Kabupaten Buru. Hasil penelitian menunjukan konsentrasilogamberat merkuripada air di Muara Sungai Waelata dan Sungai Anahoni tidak terdeteksi di semua stasiun penelitian dan dibawah baku mutu air laut untuk biota laut berdasarkan Kepmen LH No. 51 Tahun 2004 sebesar 0,001 ppm. Konsentrasilogamberat merkuripada sedimenmemilikikisaranrata­ratasebesar0,134­0,874ppm dan dibawah baku mutu sedimen berdasarkan ANZECC/AMRCANZ (2000) sebesar 1,0 ppm. Konsentrasilogamberat merkuripada kerang Polymesoda erosamemilikikisaranrata­ratasebesar0,123­0,206 ppm dan dibawah Batasan Maksimum Cemaran Logam Berat Dalam Pangan merujuk pada Standar Nasional Indonesia (SNI) No. 7387 Tahun 2009 sebesar 1,0 ppmABSTRACT The Waelata River and the Anahoni River are the two rivers where trommel operates for the processing of gold material from Gunung Botak and Gogrea. By the river, mercury waste from the processing of trommel is transported through estuary which will ultimately pollute the waters of the Kayeli Bay. Polymesoda erosa shells are one type of shellfish that is often used in monitoring heavy metals of mercury, especially in the estuary region. This study aims to analyze the concentration of heavy metal mercury (Hg) in water, sediments and Polymesoda erosa shells in the Waelata River and Anahoni River in Buru Regency. The results showed that the concentration of mercury heavy metals in water in the Waelata River and Anahoni River were not detected at all research stations and were below sea water quality standard for marine biota based on Minister of Environment Decree No. 51 of 2004 which is 0.001 ppm. The concentration of mercury heavy metals in sediments has an average range of 0.1340.887 ppm and is below the sediment quality standard based on ANZECC/AMRCANZ (2000) of 1.0 ppm. The concentration of mercury heavy metals in Polymesoda erosa shells has an average range of 0.1230.206 mg/kg and under the Maximum Limit of Heavy Metal Contamination in Food refers to the Indonesian National Standard (SNI) No. 7387 of 2009 which is 1.0 ppm.
PENYERAPAN ION Pb(II) MENGGUNAKAN ADSORBEN DARI LIMBAH PADAT LUMPUR AKTIF PENGOLAHAN AIR MINUM
Authors: Lestari Intan , Mahraja Mahra , Farid Faizar , Gusti Diah Rizki , Permana Edwin 
Published: July 2021

Timbal merupakan salah satu polutan yang paling banyak digunakan dalam beberapa kegiatan industri seperti penambangan, peleburan, pemurnian minyak bumi, percetakan, produksi pigmen, dan pembuatan baterai. Permasalahan logam berat dapat ditanggulangi dengan penurunan kadar logam berat menggunakan teknik penyerapan. Salah satu adsorben yang digunakan untuk penyerapan ion Pb(II) adalah limbah padat lumpur aktif dari pengolahan air minum. Penelitian ini bertujuan untuk menggunakan limbah padat lumpur aktif yang di ambil dari sisa pengolahan air minum PDAM Tirta Mayang Jambi dan diaktifasi menggunakan KOH. Adsorben digunakan untuk penyerapan ion Pb(II) dengan metoda penyerapan dilakukan secara statis. Adsorben dikarakterisasi menggunakan FTIR, SEM dan XRF. Ion Pb(II) dalam larutan dianalisis dengan menggunakan metoda Spektrofotometer Serapan Atom (SSA). Parameter penyerapan yang dipelajari adalah pH diperoleh pada pH 5, massa adsorben 0,2 g, waktu kontak 45 menit dan konsentrasi ion Pb(II) adalah 300 mg/L dengan kapasitas adsorbs 25,42 mg/g.ABSTRACT The lead metal is one of the pollutants most widely used in several industrial activities such as mining, smelting, refining petroleum, printing, pigment production, and battery production. Heavy metal problems can be overcome by decreasing heavy metal content using adsorption techniques. One of the adsorbents used for Pb(II) ion adsorption is avtivated sludge solid waste from drinking water treatment. This study aims using activated sludge solid waste from drinking water treatment Local Water Company Tirta Mayang Jambi and activated using KOH. The adsorbent used for adsorption of Pb(II) ion by batch technique. Adsorbents are characterized using FTIR. SEM, XRF. Pb(II) ion in the solution analysis with Adsorption Atomic Spectrophotometer (AAS). The adsorption parameters studied were pH was pH 5, adsorbent mass was 0.2 g, contact time was 45 minute and concentration of Pb(II) ion was 300 mg/L with adsorption capacity was 25.42 mg/g.
ANALISIS KONDUKTIVITAS DAN TERMAL PADA POLIMER ELEKTROLIT DARI KITOSAN/PVA/GLISEROL/LiClO4 UNTUK APLIKASI BATERAI ION LITIUM
Authors: . Nurhadini , Fabiani Verry Andre , Putri Megawati Ayu , Lestari Iin 
Published: July 2021

Penggunaan polimer ramah lingkungan merupakan tantangan bagi industri baterai ion litium saat ini dikarenakan sifatnya yang mudah terbiodegradasi menjadi keunggulan polimer alam seperti kitosan dengan bahan baku dari alam yang melimpah. Komposisi polimer elektrolit dalam penelitian ini terdiri atas kitosan, PVA, gliserol yang didopan dengan LiClO4. Penelitian ini bertujuan untuk menganalisis sifat konduktivitas dan termal dari polimer elektrolit kitosan/PVA/gliserol/LiClO4. Pembuatan polimer elektrolit ini menggunakan metode casting. Peningkatan massa kitosan dalam komposisi polimer elektrolit menyebabkan adanya peningkatan intensitas pada bilangan gelombang 1718 cm-1 dan peningkatan intensitas serapan pada bilngangan gelombang 1271 cm-1 dengan masing-masing puncak serapan tersebut adalah gugus fungsi dari C=O dan gugus fungsi C-O. Berdasarkan data konduktivitas menunjukkan bahwa komposisi 70/30/20/20 (kitosan /PVA/Gliserol/LiClO4) memiliki konduktivitas tertinggi sebesar 4,8 x 10-5S/cm. Hasil kurva TGA menunjukkan stabilitas termal komposisi polimer elektrolit hingga 210oC dan peningkatan jumlah kitosan dalam polimer elektrolit menurunkan kestabilan termal. Polimer elektrolit dari kitosan/PVA/Gliserol/LiClO4 dapat diaplikasikan untuk baterai ion litium berdasarkan analisis konduktivitas ionik dan kestabilan termal. ABSTRACT The use of environmentally friendly polymers is a challenge for the lithium-ion batteries industry today because its biodegradable nature is an advantage of natural polymers such as chitosan with abundant raw materials from nature. The polymer electrolyte composition in this study consisted of chitosan, PVA, glycerol doped with LiClO4. This study aims to analyze the conductivity and thermal properties of the polymer electrolyte chitosan/PVA/Glycerol/LiClO4. The polymer electrolyte was made using a casting method. The increasing of the chitosan mass in the polymer electrolyte composition led to an increase in intensity at the wave number 1718 cm-1 and an increase in absorption intensity at the wavenumber of 1271 cm-1 with absorption peaks being a functional group of C=O and C-O respectively. Based on the conductivity data, it showed that the composition of 70/30/20/20 (chitosan/PVA/Glycerol/LiClO4) had the highest conductivity of 4.8 x 10-5S/cm. The results of the TGA curve illustrated that polymer electrolyte had thermal stability until 210oC and the increasing amount of chitosan of polymer electrolyte decreased thermal stability. Polymer electrolyte chitosan
Análise da Estrutura Fundiária do Município de Montes Claros-MG por Meio dos Dados do Cadastro Ambiental Rural (CAR)
Authors: Nobre Bruno Alves , Leite Marcos Esdras , Marques Samuel Carlos Santos 
Published: July 2021

O Cadastro Ambiental Rural (CAR) é um registro público eletrônico georreferenciado de âmbito nacional, obrigatório para todos os imóveis rurais. O CAR, enquanto banco de dados georrefenciados, torna-se um instrumento de monitoramento da estrutura fundiária rural. Portanto, a análise de seus dados em ambiente SIG, cruzados com dados provenientes do sensoriamento remoto, permite melhor compreensão da realidade de uso da terra. Nesse contexto, este trabalho analisou a estrutura fundiária rural de Montes Claros. Para isso, em ambiente do Sistema de Informação Geográfica (SIG), foram cruzados os dados do CAR com informações extraídas de imagens de satélite. Os resultados mostram que a estrutura fundiária ainda está moldada no processo de exclusão social.
A Dinâmica das Formas Espaciais Flutuantes nos Lagos Urbanos do Solimões no Amazonas
Authors: Queiroz Kristian Oliveira de 
Published: July 2021

Nas águas próximas às principais cidades da região do Médio Solimões no Amazonas, Tefé e Coari, centenas de flutuantes exercem funções domiciliares, comerciais, institucionais e de serviços. Compreender o papel dos flutuantes dos lagos urbanos de Tefé e Coari para o desenvolvimento regional e para a integração territorial é o objetivo deste artigo. Primordialmente, realiza-se a identificação das funções e estruturas dos flutuantes nos lagos urbanos destas cidades. Posteriormente, elabora-se a identificação e classificação das formas espaciais flutuantes. Esta análise providencia subsídios para a compreensão das relações sociais e econômicas úteis ou não ao desenvolvimento e à integração territorial nesta fração da formação socioespacial brasileira.
Proposta Metodológica para Mapeamento de Relevos Tecnogênicos em Áreas de Desastres Ambientais
Authors: Eduardo Carolina Campos , Felippe Miguel Fernandes , Silva Telma Mendes da 
Published: July 2021

Na discussão do Antropoceno, o ser humano é considerado um dos responsáveis pelas transformações diretas e indiretas ocorridas na paisagem, atuando como agente geológico-geomorfológico. Nesse contexto, complexos minerários possuem grande capacidade de (re)construção das formas do relevo, criando e induzindo feições tecnogênicas. Este artigo aborda as principais transformações no relevo ocorridas com a deposição de aproximadamente 10 milhões de m³ de rejeitos decorrentes do rompimento da barragem I do Complexo Minerário do Córrego do Feijão, inserida na bacia do Ribeirão Ferro-Carvão, em Brumadinho (Minas Gerais, Brasil). Para tanto, realizou-se pela cartografia retrospectiva a comparação entre a morfologia antes e depois do rompimento, através de técnicas de geoprocessamento, fotointerpretação e trabalho de campo. A classificação dos terrenos tecnogênicos possibilitou a identificação dos diferentes processos morfogenéticos relacionados ao Antropoceno, porém, apresentou limitações na distinção das consequências geomorfológicas do desastre, evidenciando a necessidade de aprimoramento das categorias de análise tecnogênica para melhor compreensão de situações similares.
Self-Awareness Of Persons With Disabilities To Carry Out Rehabilitation, Increasing Participation And Rehabilitation Needs
Authors: Ardesa Yopi Harwinanda 
Published: July 2021

Background: Rehabilitation of persons with disabilities increases productivity. Self-awareness motivates participation in rehabilitation. This study aims to analyze the relationship between self-awareness and rehabilitation.
Methods: This research is a quantitative descriptive study with a cross sectional approach with a population of people with disabilities in Colomadu District, Karanganyar. Sampling using purposive sampling technique with the inclusion criteria of persons with physical disabilities as many as 23 subjects. The research instrument used a questionnaire. Data collection was carried out in December 2019. The data analysis technique used the non-parametric Rank Correlation test Spearman test.
Results: The results of data analysis showed that self-awareness was not related to the rehabilitation of persons with physical disabilities with a value of r = 0.108, (p>0.05). The adjustment value (R2) is 0.118, meaning that 11.8% of individual autonomy variations can be explained by variations in self-awareness. While 88.2% was caused by other factors. Self-awareness does not improve rehabilitation implementation.
Conclusion: External supporting factors are needed to increase the participation of persons with disabilities and self-awareness as internal motivation to strengthen external supporting factors in the implementation of rehabilitation.
Raudondvaris prie Raudonojo Dvaro ežero: 400 metų istorinės raidos atspindžiai
Authors: Kačinskaitė Indrė 
Published: July 2021

Šio straipsnio tikslas – pateikti turimas žinias apie šiandien dar egzistuojantį Gulbinų Raudondvario dvaro sodybos ansamblį, kuriame do- minuoja medinis užstatymas, įvertinti šio objekto svarbą Lietuvos dvarų paveldui. Medinis dvarų paveldas – bene labiausiai šiandien nykstanti, besikeičianti paveldo dalis, dėl savo apgailėtinos būklės dažnai estetiškai nebepatraukli, vartotojiškos visuomenės vertinama kaip jau prarasta – „argi čia dvaras, rūmai?“, todėl verta kur kas išsamesnės analizės.
Straipsnyje, remiantis istoriniais, kartografiniais šaltiniais, architektūriniais tyrimais, atskleidžiama vienos seniausių išlikusių medinių dvarų sodybų Lietuvoje – Raudondvario sodybos Riešės seniūnijoje, Vilniaus rajone, istorinio vaizdo kaita, pastatų architektūra, atspindinti 400 metų trukusios raidos bruožus.
THE EFFECT OF THE UTILIZATION OF INFORMATION TECHNOLOGY AND ORGANIZATIONAL CULTURE ON EMPLOYEE MOTIVATION AND PERFORMANCE
Authors: Prasiani Ni Komang , Yuesti Anik , Sudja Nengah 
Published: July 2021

The purpose of this study is to determine the relationship between organizational culture variables, information technology, and employee performance, whether or not technology plays a role in improving employee performance. The population in this study is the Information System Users (SINERGY) in the Bali Design and Business Institute, consisting of 81 lecturers and employees. Data relating to research variables were collected using questionnaires that were distributed to all respondents and filled in by the respondents themselves based on the respondents' perceptions. Based on the instrument test performed, it was proven that all statement items in the questionnaire are valid and reliable. This study uses Structural Equation Modeling (SEM) analysis. The results indicate that: the use of information technology has a positive and significant effect on motivation. Organizational culture has a positive effect on motivation. The use of information technology has a positive on employee performance. Organizational culture has a positive effect on employee performance. Motivation has a positive and significant effect on employee performance.
Keywords: Information Technology, Organizational Culture, Motivation and Employee Performance.
Pengaruh Manajemen Tenaga Pendidik Terhadap Prestasi Belajar Peserta Didik di SD Harapan Indonesia Kota Bekasi
Authors: Marpaung Netti Natarida 
Published: July 2021

This research aims to determine and analyze the influence of teaching staff management on learning achievement. The research in this paper uses a quantitative method with an associative approach. The variables related in this study are teaching staff management (X), and learning achievement (Y). The data sources used consist of primary data, namely data obtained directly from research respondents through questionnaires, the samples in this research parents and teachers who were taken randomly totaling 80 people. The test was carried out using SPSS 25. The results obtained from this research indicate that teacher management has a positive and significant effect on student learning achievement at Harapan Indonesia Elementary School in Bekasi City. Based on the results of the partial test (t test) it can be concluded that the teacher management variable has a significant effect on student learning achievement because the value of tcount (25.659) > t table (0.1984) with a significance of 0.000 t table (0.1984) with a significance of 0.066
Abstrak
Penelitian ini bertujuan untuk mengetahui dan menganalisis pengaruh manajemen staf pengajar terhadap prestasi belajar. Penelitian dalam tulisan ini menggunakan metode kuantitatif dengan pendekatan asosiatif. Variabel yang terkait dalam penelitian ini adalah manajemen staf pengajar (X1), dan prestasi belajar (Y). Sumber data yang digunakan terdiri dari data primer yaitu data yang diperoleh langsung dari responden penelitian melalui kuesioner, sampel dalam penelitian ini adalah orangtua murid dan guru yang diambil secara acak berjumlah 80 orang. Pengujian dilakukan dengan menggunakan SPSS 25. Hasil yang diperoleh dari penelitian ini menunjukkan bahwa manajemen guru berpengaruh positif dan signifikan terhadap prestasi belajar murid di SD Harapan Indonesia di Kota Bekasi. Berdasarkan hasil uji parsial (uji t) dapat disimpulkan bahwa variabel manajemen guru berpengaruh signifikan terhadap prestasi belajar murid karena nilai thitung (25,659) > t tabel (0,1984) dengan signifikansi sebesar 0,000 t tabel (0,1984) dengan signifikansi 0,066
Uniform Forward-modeling Analysis of Ultracool Dwarfs. I. Methodology and Benchmarking
Authors: Zhang 张 Zhoujian 周健 , Liu Michael C. , Marley Mark S. , Line Michael R. , Best William M. J. 
Published: July 2021

Abstract
We present a forward-modeling framework using the Bayesian inference tool Starfish and cloudless Sonora-Bobcat model atmospheres to analyze low-resolution (R ≈ 80–250) near-infrared (1.0–2.5 μm) spectra of T dwarfs. Our approach infers effective temperatures, surface gravities, metallicities, radii, and masses, and by accounting for uncertainties from model interpolation and correlated residuals due to instrumental effects and modeling systematics, produces more realistic parameter posteriors than traditional (χ
2-based) spectral-fitting analyses. We validate our framework by fitting the model atmospheres themselves and finding negligible offsets between derived and input parameters. We apply our methodology to three well-known benchmark late-T dwarfs, HD 3651B, GJ 570D, and Ross 458C, using both solar and nonsolar metallicity atmospheric models. We also derive these benchmarks’ physical properties using their bolometric luminosities, their primary stars’ ages and metallicities, and Sonora-Bobcat evolutionary models. Assuming the evolutionary-based parameters are more robust, we find our atmospheric-based, forward-modeling analysis produces two outcomes. For HD 3615B and GJ 570D, spectral fits provide accurate T
eff and R but underestimated

log
g

(by ≈1.2 dex) and Z (by ≈0.35 dex), likely due to the systematics from modeling the potassium line profiles. For Ross 458C, spectral fits provide accurate

log
g

and Z but overestimated T
eff (by ≈120 K) and underestimated R (by ≈1.6×), likely because our model atmospheres lack clouds, reduced vertical temperature gradients, or disequilibrium processes. Finally, the spectroscopically inferred masses of these benchmarks are all considerably underestimated.
A Study of the Soft X-Ray Emission Lines in NGC 4151. I. Kinematic Properties of the Plasma Wind
Authors: Grafton-Waters S. , Ahmed M. , Henson S. , Hinds-Williams F. , Ivanova B , Marshall E. , Udueni H. , Theodorakis D. , Dunn W. 
Published: July 2021

Abstract
We present our analysis of the narrow emission lines produced in the plasma regions within the bright active galactic nucleus of NGC 4151, from an ORBYTS research-with-schools public engagement project. Our goal was to test whether the properties of these plasma regions changed between XMM-Newton observations spanning 15 yr from 2000 to 2015, by measuring the outflow velocities and distances. From this study, we found that NGC 4151 has at least two to three plasma regions. There is no evidence of the outflowing wind properties changing as the velocities and distances are consistent throughout the observations.
The Scientific Value of a Sustained Exploration Program at the Aristarchus Plateau
Authors: Glotch Timothy D. , Jawin Erica R. , Greenhagen Benjamin T. , Cahill Joshua T. , Lawrence David J. , Watkins Ryan N. , Moriarty Daniel P. , Kumari Nandita , Li Shuai , Lucey Paul G. , Siegler Matthew A. , Feng Jianqing , Breitenfeld Laura B. , Allen Carlton C. , Nekvasil Hanna , Paige David A. 
Published: July 2021

Abstract
The Aristarchus plateau hosts a diversity of volcanic features, including the largest pyroclastic deposit on the Moon, the largest sinuous rille on the Moon, and intrusive and extrusive examples of evolved, Th-rich silicic lithologies. We provide an overview of previous remote-sensing measurements of the Aristarchus plateau and provide new analyses of Diviner Lunar Radiometer thermal IR data, Lunar Prospector Gamma Ray Spectrometer Th data, Chang’e-5 Microwave Radiometer data, and hyperspectral and multispectral visible/near-infrared images and spectra from the Chandrayaan-1 Moon Mineralogy Mapper and the Kaguya Multispectral Imager. The rich diversity of volcanic features on the Aristarchus plateau presents an opportunity for a sustained science and exploration program. We suggest a series of missions to the Aristarchus crater floor or ejecta, the Cobra Head, and Herodotus Mons to investigate the link between pyroclastic, effusive basaltic, and silicic volcanism in the region. Such missions would enable analyses of silicic rocks that are rare in the Apollo sample collection and demonstrate in situ resource utilization of FeO- and H2O-bearing pyroclastic materials.
Clinical Significance of Macula-Off Rhegmatogenous Retinal Detachment Preoperative Features on Optical Coherence Tomography
Authors: Felfeli Tina , Murtaza Fahmeeda , Abueh Barilee , Mandelcorn Mark S. , Wong David D. , Mandelcorn Efrem D. 
Published: July 2021

BACKGROUND AND OBJECTIVE:
To evaluate the clinical significance of preoperative spectral-domain optical coherence tomography (OCT) features and their association with postoperative outcomes in eyes with primary macula-off rhegmatogenous retinal detachment (RRD).

PATIENTS AND METHODS:
This is a retrospective case series of all consecutive cases undergoing repair of primary macula-off RRD at two tertiary care academic centers between January 2018 to January 2021.

RESULTS:

Among 406 eyes, baseline visual acuity (β = 0.184,
P
= .001) and time to surgery (β = 0.009,
P
= .033) were predictive of postoperative visual acuity at 1-year follow-up after adjusting for age, sex and lens status, as well as presence of preoperative features on OCT such as outer retinal corrugations and height of the retinal detachment.

CONCLUSION:
Baseline visual acuity and time to surgical repair are the best predictors of vision outcomes following macula-off RRD repair.

[
Ophthalmic Surg Lasers Imaging Retina
. 2021;52:S23–S29.]