bluuebunny/crossref_metadata_2025_split huggingface dataset:
PENGARUH VARIASI TEMPERATUR KALSINASI TERHADAP BARIUM M-HEKSAFERIT DIDOPING Zn MENGGUNAKAN FOURIER TRANSFORM INFRA RED
Authors: Doyan Aris , Halik Ilham , Susilawati Susilawati 
Published: January 2018

Abstrak: Barium M-heksaferit (BaM) merupakan bahan magnet permanen yang tergolong hardmagnetic tetapi tidak sesuai untuk beberapa aplikasi, sehingga perlu dilakukan rekayasa untuk menurunkan sifat kemagnetannya menjadi softmagnetic. Penelitian ini bertujuan untuk mengetahui pengaruh temperatur kalsinasi terhadap barium M-heksaferit didoping Zn menggunakan pengukuran FTIR. Proses sintesis barium M-heksaferit menggunakan metode kopresipitasi dengan memvariasikan konsentrasi dopannya 0,0; 0,3; 0,6; dan 0,9 serta memvariasikan temperatur kalsinasi 80oC, 400oC, 600oC dan 800oC. Setelah melakukan proses sintesis selanjutnya dilakukan pengujian sampel menggunakan FTIR (Fourier Transform Infra Red). Penelitian ini telah berhasil melakukan sintesis dengan hasil berupa serbuk barium M-heksaferit berwarna coklat muda hingga coklat tua. Berdasarkan hasil pengujian FTIR didapatkan puncak-puncak pada bilangan gelombang 3447cm-1, 2345cm-1, 1615cm-1, 530cm-1, 470cm-1 masing-masing mengindikasikan adanya gugus fungsi O-H, Ba-O, Fe-O dan Zn-O pada sampel. Puncak yang timbul pada ikatan O-H semakin mengecil menandakan bahwa ikatan pada gugus fungsi tersebut semakin melemah atau bahkan hilang. Hasil pengujian FTIR tersebut menyatakan bahwa temperatur kalsinasi sangat berpengaruh pada proses sintesis BaM. Semakin tinggi temperatur kalsinasi, bahan pengotor seperti air dan CO pada barium M-heksaferit semakin berkurang, ini menunjukkan barium M-heksaferit yang dihasilkan dapat digunakan sebagai bahan softmagnetic.Kata Kunci: Barium M-Heksaferite, sintesis, kopresipitasi, magnet, FTIRÃÂ Abstract: Barium M-hexaferrite (BaM) is a permanent magnetic material which is relatively hardmagnetic but it is not appropriate for some applications that need to be engineered to degrade the nature ofÃÂ magnetism to be softmagnetic. This study aims to determine the effect of calcinations temperature on Zn doped BaM using FTIR measurements. Synthesis of BaM using coprecipitation method by varying the concentrate of dopan 0,0; 0,3; 0,6; dan 0,9 and varying the calcinations temperature 80oC, 400oC, 600oC dan 800oC. After synthesis of BaM and than the samples were studied using FTIR (Fourier Transform Infra Red). This study has success to synthesis of BaM and the product is a brown powder. Based on the test result of FTIR has been obtained peaks in wave number 3447cm-1, 2345cm-1, 1615cm-1, 530cm-1, 470cm-1 indicated a functional group O-H, Ba-O, Fe-O dan Zn-O on the powder sample. The peak on O-H shrinking indicates that the bond of functional groups are weakened or even disappear.The result of FTIR said that calcinations temperature has effect to BaM synthesis process. It is found that water and CO decrease with increase in calcinations temperature, it is showed the product BaM can be used to softmagnetic.Key Words : Barium M-Hexaferrites, synthesis, coprecipitasi, magnet, FTIR
PENGEMBANGAN PERANGKAT PEMBELAJARAN BERBASIS PENDEKATAN SAINTIFIK MODEL GUIDED DISCOVERY DAN EFETIVITASNYA TERHADAP KEMAMPUAN BERPIKIR KREATIF SISWA SMA NEGERI 1 BAYAN
Authors: Sumiadi Raden , Dyah Jekti Dwi Soelistya , Jamaluddin Jamaluddin 
Published: January 2018

Abstrak: Penelitian ini bertujuan untuk mengembangkan perangkat pembelajaran berbasis pendekatan saintifik dengan model guided discovery dan mengetahui efektivitasnya terhadap kemampuan berpikir kreatif siswa. Perangkat pembelajaran yang dikembangkan terdiri dari Silabus, rencana pelaksanaan pembelajaran (RPP), lembar kegiatan discovery siswa (LKDS), buku ajar siswa (BAS), tes penguasaan konsep (TPK), tes berpikir kreatif (TBK). Pengembangan perangkat pembelajaran menggunakan model 4D dari Tiagrajan,ÃÂ S. Semmel & Semmel yang terdiri dari empat tahap, yaitu tahap define, design, development dan disseminate. ÃÂ Perangkat pembelajaran dikembangkan pada materi sistem pernapasan, hasil pengembangan perangkat pembelajaran selanjutnya dianalisis menggunakan rumus presentase rata-rata dan disesuaikan dengan tabel kriteria validasi. Untuk mengetahui efektivitas perangkat pembelajaran terhadap kemampuan berpikir kreatif siswa, perangkat pembelajaran di ujicoba pada kelompok terbatas di kelas XI IPA 1 dan kelas XI IPA 2 dengan jumlahÃÂ siswa 47 orang, dan dianalisis menggunakan rumus presentase ketuntasan individu. Kesimpulan hasil penelitian ini antara lain; 1) perangkat pembelajaran yang dikembangkan dikategorikan baik (valid) dan sangat baik (sangat valid) sehingga layak digunakan dalam proses pembelajaran di SMA Negeri 1 Bayan, 2) perangkat pembelajaran efektif dapat meningkatkan kemampuan berpikir kreatif siswa.ÃÂ Kata Kunci: Perangkat Pembelajaran, Pendekatan saintifik, Model guided discovery, Berpikir kreatifAbstract:ÃÂ The purposes of this research are to develop learning device based on scientific approach with guided discovery and to know the effectiveness of peripheral learning to ability of mastering biological concept and creative thinking ability of student. Learning device of developed study consist of Syllabus, plan execution of study, sheet activity of student discovery, book teach student, domination concept of tes, think creatively tes. Developing learning device uses 4D model from Tiagrajan, S. Semmel & Semmel which consist of four steps: difine, disaign, development, and disseminate. The results of developing peripheral learning analyzed using mean precentage criteria which adapted from criteria validation table. To know the effectiveness of the peripheral to mastery bioligical concept and creatively student think ability, the learning device was tested in class XI IPA 1 and class XI IPA 2 with total 47 students. The result was analyzed using percentage formula of individual mastery. In conclusion 1) the developed learning device was categorized good (valid) and very good (very valid) so that it can be used in learning processes in SMAN Bayan 2) the developed learning device is effective to improve the studentÃ¢â¬â¢s creative thinking.Keywords: learning device, scientific approach, guided discovery, creative thinking.
PENGEMBANGAN MULTIMEDIA INTERAKTIF BERBASIS KONTEKSTUAL UNTUK MENINGKATKAN KETERAMPILAN BERPIKIR KRITIS SISWA KELAS XI PADA MATERI POKOK SISTEM KOLOID
Authors: Surachman Mardhika , - Muntari , Savalas Lalu Rudyat Telly 
Published: January 2018

The aims of this study were to: 1) generate interactive multimedia of colloidal system which is suitable to be implemented in schools, and to test the effectiveness of the interactive multimedia by: 2) knowing whether critical thinking skill of students who use context-based interactive multimedia is better than critical thinking skill of students who do not use context-based interactive multimedia on subject matter of the colloidal system. The method used in this study was research and development (R&D) according to the model of Borg & Gall’s development. The results of the expert validation by 4 validators and limited testing by 10 students showed that the interactive multimedia was very suitable to be used, with scores of 4.21 and 4.36 for expert validation and limited testing, respectively. Field trial using a non-equivalent control group design with 2 class samples, resulted in the critical thinking skill of probability value of 0.00 (p < 0.05). From this research we can conclude that: 1) context-based interactive multimedia can be developed by means of analyzing the materials in each sub materials as the basis for developing primary form of product, then tested for it’s feasibility, effectiveness, and revised through an expert validation, limited field testing, and main field testing, consecutively, so that the resulting product is considered to be suitable for learning process, and 3) critical thinking skill of students who use context-based interactive multimedia is better than critical thinking skill of students who do not use context-based interactive multimedia on the subject matter of the colloidal system. Keywords: interactive multimedia, context learning, concept mastery, critical thinking skill
PENGEMBANGAN ALAT PERAGA KOTAK ENERGI MODEL INKUIRI TERBIMBING (APKEMIT) SEBAGAI PENUNJANG PEMBELAJARAN FISIKA SMA PADA MATERI SUHU DAN KALOR
Authors: Basuki Budiono , Doyan Aris , Harjono Ahmad 
Published: January 2018

The purpose of this research is to develop APKEMIT as learning tool for high school physics on temperature and heat concepts. This study used Borg & Gall approach on R & D which includes the step of development, pilot testing, and final testing. In the development stage, five APKEMIT models are produced: PKTSB, PW, PPSTUB, PK, and AB. Pilot testing stage is divided into two phase, limited testing and large scale testing. The first limited testing carried out on 6 eleventh grade science students in SMA 3 Mataram. The second phase carried on 2 groups (12 students) of accelerated tenth graders in SMA Negeri 1 Woha. Large-scale trials given to 8 groups (46 students) of tenth graders in SMA Negeri 3 Mataram. Pilot testing shows that APKEMIT is very good and ready to be used in learning activity. APKEMIT final testing stage is the stage to determine the effect of APKEMIT on the improvement of learning outcomes, which is determined by the Gain Score. Analysis shows that the gain of each model is: PKTSB Score of 0.50 (medium), PW of 0.15 (low), PPSTUB of 0.40 (medium), PK at 12:27 (low), AB of 0.34 (medium) and overall Gain Score at 0:36 (medium). This development received good response from the students with score 80.8% and according to observers, learning process has been going very well. The result of research and validation of test show that the developed APKEMIT become as references in subject temperature and heats concepts.
Intensity-corrected Herschel Observations of Nearby Isolated Low-mass Clouds*
Authors: Sadavoy Sarah I. , Keto Eric , Bourke Tyler L. , Dunham Michael M. , Myers Philip C. , Stephens Ian W. , Di Francesco James , Webb Kristi , M. Stutz Amelia , Launhardt Ralf , J. Tobin John 
Published: January 2018

Abstract
We present intensity-corrected Herschel maps at 100, 160, 250, 350, and 500 μm for 56 isolated low-mass clouds. We determine the zero-point corrections for Herschel Photodetector Array Camera and Spectrometer (PACS) and Spectral Photometric Imaging Receiver (SPIRE) maps from the Herschel Science Archive (HSA) using Planck data. Since these HSA maps are small, we cannot correct them using typical methods. Here we introduce a technique to measure the zero-point corrections for small Herschel maps. We use radial profiles to identify offsets between the observed HSA intensities and the expected intensities from Planck. Most clouds have reliable offset measurements with this technique. In addition, we find that roughly half of the clouds have underestimated HSA-SPIRE intensities in their outer envelopes relative to Planck, even though the HSA-SPIRE maps were previously zero-point corrected. Using our technique, we produce corrected Herschel intensity maps for all 56 clouds and determine their line-of-sight average dust temperatures and optical depths from modified blackbody fits. The clouds have typical temperatures of ∼14–20 K and optical depths of ∼10−5–10−3. Across the whole sample, we find an anticorrelation between temperature and optical depth. We also find lower temperatures than what was measured in previous Herschel studies, which subtracted out a background level from their intensity maps to circumvent the zero-point correction. Accurate Herschel observations of clouds are key to obtaining accurate density and temperature profiles. To make such future analyses possible, intensity-corrected maps for all 56 clouds are publicly available in the electronic version.
Spitz, Berne, Grégoire, le protocole et les états du moi du tout-petit
Authors: Évrard Brigitte 
Published: January 2018

Cet article explore l’expérience de l’être humain et sa relation au monde avant l’acquisition du langage. Brigitte Evrard tente d’appréhender ainsi la structuration précoce du moi, tout en se distanciant de la perspective dissociative du modèle structural classique. S’appuyant sur le modèle des états du moi proposé par José Grégoire, elle nous convie à une exploration phénoménologique vivifiante des 18 premiers mois de vie de l’enfant. Cet exposé reprend les apports de Spitz, de la psychanalyse de la relation d’objet, ainsi que de Cornell, pour dresser une description dépathologisante de l’organisation précoce du moi. C.L.
Some-body knows the trouble I’ve seen
Authors: Oates Steff , Blondel Agnès 
Published: January 2018

Cet article a d’abord été publié en 2004 dans un journal britannique intitulé Transactions, disparu depuis. Il a été largement développé et mis à jour pour ce numéro des Actualités en Analyse Transactionnelle. L’objectif initial de l’article consistait à rassembler les concepts de l’analyse transactionnelle, de la psychothérapie corporelle et de la neurophysiologie. Le but était ainsi de créer un dialogue autour du travail thérapeutique impliquant le vécu au niveau du protocole (Berne, 1971a), là où les mots et une narration cohérente peuvent être peu accessibles. Depuis 2004, la littérature d’analyse transactionnelle s’est abondamment enrichie dans ce domaine (Cornell & Landaiche, 2006 ; Oates, 2007 et 2015 ; Guglielmotti, 2008 ; Caizzi, 2012 ; Novak, 2015 ; Deaconu, 2016). En remaniant cet article, j’espère maintenant associer perspectives récentes et plus anciennes.
La question de la vie privée en psychanalyse de groupe
Authors: Neri Claudio 
Published: January 2018

Je traiterai quatre thèmes, étroitement liés entre eux : la question de la vie privée en psychanalyse de groupe ; les fantasmes et les peurs des patients avant d’entrer dans le groupe ; le changement rapide qui se produit dès que s’établit l’appartenance ; et la disparition au même moment, comme par enchantement, des problèmes de vie privée.
Water Tracing Test in the Tianshengan Region, Yunnan - China at High Water Level
Authors: Kogovšek Janja , Liu Hong 
Published: January 2018

Podani so rezultati sledenja na območju Tianshengan-a, Lunan v provinci Yunnan na Kitajskem. Sledenje je bilo nadaljevanje raziskav pretakanja vode na tem delu krasa v sodelovanju s kitajskimi raziskovalci v okviru slovensko-kitajskega znanstvenega sodelovanja. Sledenje je bilo izvedeno septembra 1997 ob visokem vodostaju in je pokazalo 2 krat večje hitrosti v primerjavi s pretakanjem vode na tem območju ob srednjem vodostaju julija 1996. The results of water tracing in the Tianshengan region, Lunan, Yunnan province, China are given. This water tracing presents a continuation of water flow studies in this part of the karst based on Slovene-Chinese scientific co-operation. In September 1997 a water tracing test at high water level was carried out and showed greater velocities double compared to water flow in this area at medium water level in July 1996.
Fosilne cevke iz brezstrope jame - verjetno najstarejši ostanki jamskega cevkarja Marifugia (Annelida: Polychaeta)
Authors: Mihevc Andrej 
Published: January 2018

Članek je poročilo o odkritju cevk jamskega cevkarja v brezstropi jami v kamnolomu nad Črnim kalom. Opisano je nahajališče ter oblika fosilnih cevk. Živali so živele pritrjene na fasetirano steno rova. Rov je nato zapolnila ilovica, nato pa še več metrov debela siga. Strop rova in njegov gornji del je kraška denudacija že odstranila, tako da sega siga že na površje. Na skalni steni so se ohranili prirasli deli cevk različno velikih živali, deli cevk, ki so rasli pravokotno na steno pa so se odlomili, vendar so se ohranili v sedimentu. Cevke so po dimenzijah in obliki podobne cevkam recentnega jamskega cevkarja Marifugia cavatica Absolon in Hrabe. Po legi ohranjenih cevk ter dataciji bližnjih sedimentov s paleomagnetno metodo sodimo, da so ostanki cevkarjev najmanj pliocenske starosti. The paper is a report on the discovery of tubes of a fossilized cave serpulid in a roofless cave in the quarry above Črni Kal village. The site and shape of the fossilized tubes are described. The animals lived attached to the scallops in the wall of the passage. The passage was later filled with clay deposits, followed by a layer of flowstone several metres thick. The roof of the passage has been removed by karst denudation and flowstone now reaches to the surface. Fragments of tubes of animals of various sizes have been preserved, attached to the rock wall; those tubes which grew at a right angle to the wall have broken off but have been preserved in the sediment. In terms of their dimension and shape the tubes remind one of the tubes of the more recent cave serpulid Marifugia cavatica Absolon and Hrabe. The positions of the preserved tubes and the dating of the nearby sediments by palaeomagnetic method indicate that the remains of the serpulids are from the Pliocene epoch or older.
Synoptic ozone, cloud reflectivity, and erythemal irradiance from sunrise to sunset for the whole earth as viewed by the DSCOVR spacecraft from the earth–sun Lagrange 1 orbit
Authors: Herman Jay , Huang Liang , McPeters Richard , Ziemke Jerry , Cede Alexander , Blank Karin 
Published: January 2018

Abstract. EPIC (Earth Polychromatic Imaging Camera) on board
the DSCOVR (Deep Space Climate Observatory) spacecraft is the first earth
science instrument located near the earth–sun gravitational plus centrifugal
force balance point, Lagrange 1. EPIC measures earth-reflected radiances in
10 wavelength channels ranging from 317.5 to 779.5 nm. Of these channels,
four are in the UV range 317.5, 325, 340, and 388 nm, which are used to
retrieve O3, 388 nm scene reflectivity (LER: Lambert equivalent
reflectivity), SO2, and aerosol properties. These new synoptic
quantities are retrieved for the entire sunlit globe from sunrise to sunset
multiple times per day as the earth rotates in EPIC's field of view.
Retrieved ozone amounts agree with ground-based measurements and satellite
data to within 3 %. The ozone amounts and LER are combined to derive the
erythemal irradiance for the earth's entire sunlit surface at a nadir
resolution of 18 × 18 km2 using a computationally efficient
approximation to a radiative transfer calculation of irradiance. The results
show very high summertime values of the UV index (UVI) in the Andes and
Himalayas (greater than 18), and high values of UVI near the
Equator at equinox.
Ocean acidification of a coastal Antarctic marine microbial community reveals a critical threshold for CO2 tolerance in phytoplankton productivity
Authors: Deppeler Stacy , Petrou Katherina , Schulz Kai G. , Westwood Karen , Pearce Imojen , McKinlay John , Davidson Andrew 
Published: January 2018

Abstract. High-latitude oceans are anticipated to be some of the first regions affected by ocean acidification. Despite this, the effect of ocean acidification on natural communities of Antarctic marine microbes is still not well understood. In this study we exposed an early spring, coastal marine microbial community in Prydz Bay to CO2 levels ranging from ambient (343 µatm) to 1641 µatm in six 650 L minicosms. Productivity assays were performed to identify whether a CO2 threshold existed that led to a change in primary productivity, bacterial productivity, and the accumulation of chlorophyll a (Chl a) and particulate organic matter (POM) in the minicosms. In addition, photophysiological measurements were performed to identify possible mechanisms driving changes in the phytoplankton community. A critical threshold for tolerance to ocean acidification was identified in the phytoplankton community between 953 and 1140 µatm. CO2 levels  ≥ 1140 µatm negatively affected photosynthetic performance and Chl a-normalised primary productivity (csGPP14C), causing significant reductions in gross primary production (GPP14C), Chl a accumulation, nutrient uptake, and POM production. However, there was no effect of CO2 on C : N ratios. Over time, the phytoplankton community acclimated to high CO2 conditions, showing a down-regulation of carbon concentrating mechanisms (CCMs) and likely adjusting other intracellular processes. Bacterial abundance initially increased in CO2 treatments  ≥ 953 µatm (days 3–5), yet gross bacterial production (GBP14C) remained unchanged and cell-specific bacterial productivity (csBP14C) was reduced. Towards the end of the experiment, GBP14C and csBP14C markedly increased across all treatments regardless of CO2 availability. This coincided with increased organic matter availability (POC and PON) combined with improved efficiency of carbon uptake. Changes in phytoplankton community production could have negative effects on the Antarctic food web and the biological pump, resulting in negative feedbacks on anthropogenic CO2 uptake. Increases in bacterial abundance under high CO2 conditions may also increase the efficiency of the microbial loop, resulting in increased organic matter remineralisation and further declines in carbon sequestration.
Estrategias didácticas utilizadas en las Conferencias Magistrales y clases subgrupales y su incidencia en el rendimiento académico de los estudiantes de la asignatura Introducción a la Física, impartido por docentes del Departamento de Física
Authors: Zeledón Meza Kelvin Francisco 
Published: January 2018

Se realizó un estudio teniendo como base los resultados de dos informes sobre evaluación de las Conferencias Magistrales por Dirección Académica[1] de UNAN – Managua en el año 2011, en el que se reflejó: poca participación de los estudiantes, falta de coordinación entre docentes de subgrupo y docente que imparte la magistral, inasistencias de los estudiantes, entre otras. De acuerdo a lo anterior y siendo el curso de Introducción a la Física no incluido en esta primera evaluación, surge la necesidad de realizar un análisis minucioso, con la finalidad de conocer el comportamiento del desarrollo de las Conferencias Magistrales y Clases de Subgrupo y así obtener insumos necesarios que permitan mejorar el abordaje de las mismas. Es una investigación de tipo descriptiva, analítica y correlacional; de acuerdo al tiempo de ocurrencia de los hechos y registro de información el estudio es prospectivo; y según el periodo del estudio es transversal.Se encuestaron 189 estudiantes de primer año de las carreras de Geografía, Antropología Social, Comunicación para el Desarrollo, Fisioterapia y Optometría Médica, quienes asistieron a la Conferencia Magistral IF1-02, asimismo se desarrollaron observaciones al desarrollo de las magistrales, entrevistas con docentes y estudiantes y un grupo focal. Se encontró que el docente que impartía la Conferencia Magistral utilizó una metodología tradicional, pero las clases de subgrupo fueron más participativas. Otro aspecto relevante mencionar es que los estudiantes de las carreras que asistieron menos a las conferencias magistrales obtuvieron las mejores notas al final del curso, se obtuvo una relación intrínseca entre los factores actuación del docente y actuación de los estudiantes.[1] A partir del año 2015 cambió a Dirección de Docencia de Grado
Primary breast carcinoma with features of the follicular variant of papillary thyroid carcinoma
Authors: Koufopoulos Nektarios , Kapatou Kasiani Anastasia , Antoniadou Foteini , Nasikas Dimitrios K , Karaitianos Ioannis , Kokkali Stefania , Nasi Despoina , Khaldi Lubna 
Published: January 2018

A 61-year-old female patient with no previous medical history presented to our hospital with a palpable right breast mass as well as palpable axillary lymph nodes. Microscopic examination revealed a bifocal primary carcinoma of the breast displaying characteristics similar to that of follicular variant of papillary thyroid carcinoma. Three axillary lymph nodes contained metastases. Immunohistochemical study for TTF-1, Thyroglobulin, GATA-3, ER and PR was consistent with a primary breast carcinoma, excluding the possibility of a metastatic tumor.The above unusual morphological features were caused by improper fixed tissue. Suboptimal fixation may cause tissue artifacts such as shrinkage, streaming, diffusion, vacuolation and nuclear or cytoplasmic changes as well as decreasing tissue antigenicity. Occasionally, altered morphology may mislead to major diagnostic pitfall.