1,721,395 research outputs found
PEMANFAATAN SKRAP KARET ALAM UNTUK PRODUKSI BROWN CREPE (BRCR) MENGGUNAKAN PENGERING SURYA DAN PENGERING SEMI TERBUKA
Full text linkSkrap adalah koagulum yang berasal dari lateks pada saat penyadapandan menggumpal secara alami pada bidang sadap pohon karet, hingga saat ini masih belum dimanfaatkan secara optimal. Pada penelitian ini skrap dicoba dijadikan brown crepe (BRCR) dengan menggunakan mesin giling kreper, dilanjut dikeringkan dengan menggunakan pengering surya. Perlakuan terdiri atas jenis bahan olah karet (skrap dan lum mangkok) dan metode pengeringan (ruangan semi terbuka dan ruangan pengering matahari). Parameter yang diamati terdiri atas lama pengeringan, penentuan mutu secara visual dan penentuan mutu teknis (plastisitas awal/Po, indeks ketahanan plastisitas/PRI, viskositas Mooney dan kadar abu). Hasil penelitian menunjukkan bahwa skrap dapat digunakan sebagai bahan baku pembuatan BRCR, baik menggunakan ruangan semi terbuka maupun ruangan pengering surya. Pengeringan menggunakan ruangan pengering surya lebih cepat dibandingkan ruangan semi terbuka. Produk BRCR yang diolah dari skrap hanya memenuhi persyaratan jenis mutu BRCR 3X. Produk BRCR dari skrap mempunyai nilai plastisitas dan viskositas yang lebih rendah dibandingkan BRCR dari lum mangkok, tetapi mempunyai kadar abu yang lebih tinggi
Kuuk, Skrap, and the Resistance Vernacular
No full textHow are gendered identities enabled, contested, and performed through Nordic popular music? Building on relevant approaches in popular music analysis, this article offers an investigation into the function/s of language and musical style in enabling and engendering agency and subjectivity via two case studies in Norwegian popular music. Gender and language are crucial factors in this. In a global context of popular music, bands and artists who choose to sing in their local language may be seen to take up marginal positions compared to artists who choose to sing in English, as the choice of language would naturally limit their audience. I argue that this overlooks the efficacy of using one’s local language to express points of view that are relevant on a local level; what is more, it overlooks the possibility of subverting globalized trends and using these to one’s own ends. In this article, I offer close readings of Norwegian-language albums by two all-female groups: the hip-hop duo Kuuk (Live fra Blitz) and the electronica duo Skrap (Atlantis). Applying Russell A. Potter’s (1995) concept of the ‘resistance vernacular’ as it has been expanded and operationalized by Tony Mitchell (2004), I contend that the bands’ use of their local language opens their music to a broader set of possibilities when it comes to subverting gender and genre norms at the same time as it enhances the music’s political potential. Working in discernible genres enables both bands to create music that expresses a feminist stance; in the case of Kuuk, deconstructing and subverting expectations of gendered behaviour through parodying hip-hop misogyny, and in the case of Skrap, drawing on strategic naïvety to steer clear of gender stereotypes. I denne artikkelen tar jeg opp spørsmål om kjønnede identiteter i norsk populærmusikk. Med utgangspunkt i relevante teorier fra feltet populærmusikkforskning foretar jeg en utforskning av hvilke funksjoner språk og ulike musikkstiler kan ha i identitetsforhandlinger, og hvordan artister kan etablere agens og subjektivitet gjennom musikken. Språk og kjønn er avgjørende faktorer i det musikalske uttrykket. Grupper og artister fra ikke-engelsktalende land som velger å bruke morsmålet kan ses som at de velger marginale uttrykk, ettersom språket vil føre til at de når ut til et begrenset publikum i forhold til grupper og artister som synger på engelsk. Min påstand er at en slik innstilling overser viktigheten av det lokale språket for å uttrykke synspunkter som er relevante for et lokalt publikum, og at man dessuten kan komme til å overse hvordan band og artister anvender globaliserte musikkuttrykk til å skape egne uttrykk. Mine case-studier i artikkelen er to norske grupper: hip hop-duoen Kuuk og elektronika-duoen Skrap. I analysen bruker jeg Russell A. Potters teori om ”motstandsspråk” (resistance vernaculars) og Tony Mitchells teori om ”lingvistisk skade” (linguistic damage), hvor bruken av lokalmål gjør grupper og artister i stand til å motstå språklig strømlinjeforming. Dette åpner for min påstand om at gruppenes bruk at sitt eget språk, og sine egne dialekter, åpner for utvidete muligheter til å undergrave begrensende kjønnsnormer og sjangerkonvensjoner samtidig som det styrker musikkens politiske potensial. Begge band arbeider innenfor musikalske uttrykk som gir dem muligheten til å lage musikk med et uttalt feministisk tilsnitt: Kuuk dekonstruerer og undergraver forventninger til kjønnet oppførsel gjennom å parodiere hip-hop-sjangerens misogynistiske holdninger, og Skrap benytter strategisk naivitet til å gå klar av kjønnsstereotypier
Kuuk, Skrap, and the Resistance Vernacular
Full text linkHow are gendered identities enabled, contested, and performed through Nordic popular music? Building on relevant approaches in popular music analysis, this article offers an investigation into the function/s of language and musical style in enabling and engendering agency and subjectivity via two case studies in Norwegian popular music.
Gender and language are crucial factors in this. In a global context of popular music, bands and artists who choose to sing in their local language may be seen to take up marginal positions compared to artists who choose to sing in English, as the choice of language would naturally limit their audience. I argue that this overlooks the efficacy of using one’s local language to express points of view that are relevant on a local level; what is more, it overlooks the possibility of subverting globalized trends and using these to one’s own ends.
In this article, I offer close readings of Norwegian-language albums by two all-female groups: the hip-hop duo Kuuk (Live fra Blitz) and the electronica duo Skrap (Atlantis). Applying Russell A. Potter’s (1995) concept of the ‘resistance vernacular’ as it has been expanded and operationalized by Tony Mitchell (2004), I contend that the bands’ use of their local language opens their music to a broader set of possibilities when it comes to subverting gender and genre norms at the same time as it enhances the music’s political potential.
Working in discernible genres enables both bands to create music that expresses a feminist stance; in the case of Kuuk, deconstructing and subverting expectations of gendered behaviour through parodying hip-hop misogyny, and in the case of Skrap, drawing on strategic naïvety to steer clear of gender stereotypes.How are gendered identities enabled, contested, and performed through Nordic popular music? Building on relevant approaches in popular music analysis, this article offers an investigation into the function/s of language and musical style in enabling and engendering agency and subjectivity via two case studies in Norwegian popular music.
Gender and language are crucial factors in this. In a global context of popular music, bands and artists who choose to sing in their local language may be seen to take up marginal positions compared to artists who choose to sing in English, as the choice of language would naturally limit their audience. I argue that this overlooks the efficacy of using one’s local language to express points of view that are relevant on a local level; what is more, it overlooks the possibility of subverting globalized trends and using these to one’s own ends.
In this article, I offer close readings of Norwegian-language albums by two all-female groups: the hip-hop duo Kuuk (Live fra Blitz) and the electronica duo Skrap (Atlantis). Applying Russell A. Potter’s (1995) concept of the ‘resistance vernacular’ as it has been expanded and operationalized by Tony Mitchell (2004), I contend that the bands’ use of their local language opens their music to a broader set of possibilities when it comes to subverting gender and genre norms at the same time as it enhances the music’s political potential.
Working in discernible genres enables both bands to create music that expresses a feminist stance; in the case of Kuuk, deconstructing and subverting expectations of gendered behaviour through parodying hip-hop misogyny, and in the case of Skrap, drawing on strategic naïvety to steer clear of gender stereotypes.I denne artikkelen tar jeg opp spørsmål om kjønnede identiteter i norsk populærmusikk. Med utgangspunkt i relevante teorier fra feltet populærmusikkforskning foretar jeg en utforskning av hvilke funksjoner språk og ulike musikkstiler kan ha i identitetsforhandlinger, og hvordan artister kan etablere agens og subjektivitet gjennom musikken.
Språk og kjønn er avgjørende faktorer i det musikalske uttrykket. Grupper og artister fra ikke-engelsktalende land som velger å bruke morsmålet kan ses som at de velger marginale uttrykk, ettersom språket vil føre til at de når ut til et begrenset publikum i forhold til grupper og artister som synger på engelsk. Min påstand er at en slik innstilling overser viktigheten av det lokale språket for å uttrykke synspunkter som er relevante for et lokalt publikum, og at man dessuten kan komme til å overse hvordan band og artister anvender globaliserte musikkuttrykk til å skape egne uttrykk.
Mine case-studier i artikkelen er to norske grupper: hip hop-duoen Kuuk og elektronika-duoen Skrap. I analysen bruker jeg Russell A. Potters teori om ”motstandsspråk” (resistance vernaculars) og Tony Mitchells teori om ”lingvistisk skade” (linguistic damage), hvor bruken av lokalmål gjør grupper og artister i stand til å motstå språklig strømlinjeforming. Dette åpner for min påstand om at gruppenes bruk at sitt eget språk, og sine egne dialekter, åpner for utvidete muligheter til å undergrave begrensende kjønnsnormer og sjangerkonvensjoner samtidig som det styrker musikkens politiske potensial.
Begge band arbeider innenfor musikalske uttrykk som gir dem muligheten til å lage musikk med et uttalt feministisk tilsnitt.: Kuuk dekonstruerer og undergraver forventninger til kjønnet oppførsel gjennom å parodiere hip-hop-sjangerens misogynistiske holdninger, og Skrap benytter strategisk naivitet til å gå klar av kjønnsstereotypier
Smaller, softer, lower-impedance electrodes for human neuroprosthesis: a pragmatic approach
No full textFinding the most appropriate technology for building electrodes to be used for long term implants in humans is a challenging issue. What are the most appropriate technologies? How could one achieve robustness, stability, compatibility, efficacy, and versatility, for both recording and stimulation? There are no easy answers to these questions as even the most fundamental and apparently obvious factors to be taken into account, such as the necessary mechanical, electrical and biological properties, and their interplay, are under debate. We present here our approach along three fundamental parallel pathways: we reduced electrode invasiveness and size without impairing signal-to-noise ratio, we increased electrode active surface area by depositing nanostructured materials, and we protected the brain from direct contact with the electrode without compromising performance. Altogether, these results converge toward high-resolution ECoG arrays that are soft and adaptable to cortical folds, and have been proven to provide high spatial and temporal resolution. This method provides a piece of work which, in our view, makes several steps ahead in bringing such novel devices into clinical settings, opening new avenues in diagnostics of brain diseases, and neuroprosthetic applications. © 2014 Castagnola, Ansaldo, Maggiolini, Ius, Skrap, Ricci and Fadiga
Pengaruh Penambahan Fluks Kalsium Karbonat (Caco3) Terhadap Penurunan Persentase Mangan Pada Peleburan Campuran Skrap Baja
No full textIndustri peleburan logam memegang peranan penting dalam pembuatan komponen kendaraan bermotor, dengan skrap baja sebagai bahan baku utama. Namun, kandungan mangan (Mn) tinggi pada skrap, sekitar 0,70-0,71 wt%, dapat meningkatkan kekerasan produk akhir secara signifikan dan berisiko menyebabkan retak saat pemakaian. Penelitian ini bertujuan untuk menganalisis pengaruh variasi fluks kalsium karbonat (CaCO3) terhadap penurunan kadar Mn dalam skrap baja, menganalisis karakteristik slag hasil peleburan, serta mengevaluasi kesetimbangan massa, energi, dan estimasi biaya produksi pada skala industri. Proses peleburan dilakukan dalam tungku induksi berkapasitas 250 gram dengan variasi skrap high Mn dari 100% hingga 25% serta penambahan fluks CaCO3 sebesar 2%, 4%, dan 6%. Hasil X-Ray Diffraction (XRD) menunjukkan fluks CaCO3 terdekomposisi menjadi CaO yang bereaksi dengan Mn membentuk senyawa kompleks seperti Ca2FeMnO5 , CaMnO6Si2, dan CaMnO3. Analisis X-Ray Fluorescence (XRF) menunjukkan slag mengandung CaO sebesar 45,15%, yang berpotensi dimanfaatkan sebagai material konstruksi. Penambahan fluks CaCO3 sebesar 2% menghasilkan kadar Mn akhir sebesar 0,31 wt%, masuk dalam rentang standar industri (0,20–0,40 wt%) dan menunjukkan efisiensi biaya tertinggi. Hasil ini membuktikan bahwa penggunaan fluks CaCO3 dalam kadar optimum dapat menjadi solusi efektif untuk menurunkan kadar Mn dalam proses peleburan skrap baja.
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The metal smelting industry plays a vital role in manufacturing automotive components, with steel scrap serving as the primary raw material. However, high manganese (Mn) content in scrap, approximately 0.70–0.71 wt%, can significantly increase the mechanical hardness of the final product, posing a risk of cracking during service. This study aims to analyze the effect of varying calcium carbonate (CaCO3) flux concentrations on Mn reduction in steel scrap, examine the characteristics of the resulting slag, and evaluate mass balance, energy balance, and production cost estimates on an industrial scale. The smelting process was conducted using a 250 gram capacity induction furnace, with high-Mn scrap composition ranging from 100% to 25% and CaCO3 flux additions of 2%, 4%, and 6%. X-Ray Diffraction (XRD) analysis confirmed that CaCO3 decomposed into CaO, which reacted with Mn to form complex compounds such as Ca2FeMnO5, CaMnO6Si2, dan CaMnO3. X-Ray Fluorescence (XRF) results showed that the slag contained 45.15% CaO, indicating potential reuse as construction material. The addition of 2% CaCO3 flux resulted in a final Mn content of 0.31 wt%, within the industrial standard range (0.20–0.40 wt%) and achieved the highest cost efficiency. These findings demonstrate that optimal CaCO₃ addition can be an effective solution for Mn reduction in high-Mn steel scrap smelting
Causal Role of the Sensorimotor Cortex in Action Simulation: Neuropsychological Evidence
No full textInterest in sensorimotor cortex involvement in higher cognitive functions has recently been revived, although whether the cortex actually contributes to the simulation of body part movements has not yet been established. Neurosurgical patients with selective lesions to the hand sensorimotor representation offer a unique opportunity to demonstrate that the sensorimotor cortex plays a causal role in hand action simulations. Patients with damage to hand representation showed a selective deficit in simulating hand movements compared with object movements (Experiment 1). This deficit extended to objects when the patients imagined moving them with their own hands while maintaining the ability to visualize them rotating in space (Experiment 2). The data provide conclusive evidence for a causal role of the sensorimotor cortex in the continuous update of sensorimotor representations while individuals mentally simulate motor acts
Pathological switiching between languages following frontal lesions in a bilingual patient
No full textCerebral lesions may alter the capability of bilingual subjects to separate their languages and use each language in appropriate contexts. Patients who show pathological mixing intermingle different languages within a single utterance. By contrast, patients affected by pathological switching alternate their languages across different utterances (a self contained segment of speech that stands on its own and conveys its own independent meaning). Cases of pathological mixing have been reported after lesions to the left temporoparietal lobe. By contrast, information on the neural loci involved in pathological switching is scarce. In this paper a description is given for the first time of a patient with a lesion to the left anterior cingulate and to the frontal lobe-also marginally involving the right anterior cingulate area-who presented with pathological switching between languages in the absence of any other linguistic impairment. Thus, unlike pathological mixing that typically occurs in bilingual aphasia, pathological switching may be independent of language mechanisms
Pathological switching between languages following frontal lesion in a bilingual patient
No full textPENGARUH VARIASI KOMPOSISI BAHAN KOMPOSIT LIMBAH KULIT METE/PHENOLIC DENGAN PENGUAT SKRAP ALUMUNIUM TERHADAP SIFAT FISIK DAN MEKANIK SEBAGAI BAHAN ALTERNATIF KAMPAS REM NON ASBESTOS
Full text linkKampas rem adalah produk pendukung kendaraan bermotor yang sangat penting untuk mengurangi laju kendaraan dan memberikan keselamatan bagi pengguna jalan. Penggunaan bahan asbes friksi asbes memiliki kelemahan yaitu dapat menyebabkan resiko penyakit kanker bagi para pekerja dan pemakai. Oleh karena itu, penggunaan abu mete yang dicampur dengan serbuk aluminium dijadikan bahan alternative pengganti kampas rem yang berbahan dasar asbes. Penelitian ini menggunakan limbah kulit mete sebagai bahan dasar serta sekrap aluminium sisa permesinan sebagai bahan penguat dan resin phenolic sebagai bahan pengikat. Penelitian ini bertujuan untuk untuk mengetahui karakteristik sifat fisik dan mekanik dari komposisi berdasarkan variasi fraksi berat serbuk limbah kulit mete/geram alumunium sebagai bahan gesek untuk kampas rem. Variasi fraksi berat terdiri dari phenolic resin dijaga konstan sebesar 10 %, sedangkan serbuk kulit mete dan serbuk skrap alumunium divariasikan sebesar (70:20; 65:25; 60:30; 55:35; 50:40)%. Pengujian mekanik meliputi uji keausan uji kekerasan dan uji lentur. Pengamatan fisik secara makro dan mikro agar dapat terlihat karakteristik keausan kampas rem untuk masing-masing komposisi. Hasil pengujian diperoleh nilai kekerasan tertinggi pada komposisi20% skrap aluminium dan 70% serbuk kulit mete sebesar 42,5 BHN. Nilai laju keausan paling rendah sebesar 0.485 mm2/kg pada komposisi20% skrap aluminium dan 70% serbuk kulit mete. Sedangkan nilai defleksi paling tinggi sekitar 8.56 N/mm2 pada komposisi20% skrap aluminium dan 70% serbuk kulit mete. Kata kunci : Kampas Rem, Limbah Kulit Mete, Phenolic Resin, Laju Keausa
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