bluuebunny/crossref_metadata_2025_split huggingface dataset:
KARAKTERISASI VOLUME KALIBRATOR ALAT PENAKAR CURAH HUJAN MENGGUNAKAN METODE GRAVIMETRI
Authors: Mushoddiqoh Diina Qiyaman , Sirenden Bernadus H. , Maftukhah Tatik , Tjahyo Eka Nur 
Published: February 2019

<p>Badan Meteorologi, Klimatologi, dan Geofisika (BMKG) memiliki alat ukur curah hujan yang tersebar di 180 lokasi stasiun pemantau cuaca di seluruh daerah Indonesia. Alat ukur ini perlu dikalibrasi secara berkala untuk menjamin hasil pengukuran dan ketertelusurannya. Tim peneliti Puslit Metrologi LIPI bekerjasama dengan BMKG mengembangkan kalibrator curah hujan yang dapat dibawa dan mudah untuk digunakan. Karakterisasi dilakukan pada kalibrator ini sebagai jaminan hasil pengukuran dan pengujian untuk memenuhi standar. Karakterisasi dilakukan dengan metode gravimetri menggunakan timbangan mengacu pada prosedur kalibrasi Laboratorium Volume Puslit Metrologi LIPI. Kecepatan aliran air diatur dengan pompa dalam satuan Pulse Width Modulation (PWM), dan parameter – parameter pengukuran ditampilkan pada aplikasi di dalam komputer. Telah dilakukan pengambilan data untuk karakterisasi kalibrator curah hujan dengan hasil volume rata – rata pada kondisi standar (20oC) sebesar 970 ml, 966 ml, dan 971 ml pada PWM pompa 100, 150, dan 255. Ketidakpastian bentangan yang didapat sebesar 3 ml. Dari hasil karakterisasi dan simulasi perhitungan didapat ketidakpastian bentangan sebesar 1% untuk curah hujan di atas 18 mm. Hasil tersebut memenuhi standar ketidakpastian maksimal pengukuran curah hujan sebesar 2% untuk kadar curah hujan 0 – 500 mm. </p>
PEMENUHAN PERSYARATAN STANDAR PENGELOLAAN WISATA SELAM REKREASI
Authors: Kristiningrum Ellia , Isharyadi Febrian 
Published: February 2019

<p>Persyaratan minimal penyelenggaraan usaha wisata selam rekreasi serta pedoman best practices sertifikasi usaha wisata selam rekreasi, diatur dalam standar usaha wisata selam dalam bentuk Peraturan Menteri Pariwisata dan Ekonomi Kreatif. Kesesuaian dengan standar membantu meyakinkan konsumen bahwa produk yang dihasilkan aman, efisien, dan baik untuk lingkungan. Riset ini bertujuan untuk mengetahui tingkat kemampuan dive center dalam memenuhi persyaratan standar usaha wisata selam rekreasi. Terdapat 3 aspek dalam standar usaha wisata selam yang harus dipenuhi oleh pelaku usaha. Aspek pelayanan yang meliputi penyampaian informasi pelayanan merupakan hal utama yang harus dipenuhi oleh pelaku usaha disamping faktor keselamatan dan penanganan kesehatan konsumen. Sedangkan pada aspek produk, hal utama yang perlu dipenuhi adalah peryaratan kompetensi untuk pemandu dan instruktur selam, kepemilikan peralatan permukaan sebagai pendukung keselamatan, kepemilikan peralatan dan paket penyelaman. Aspek pengelolaan termasuk bentuk organisasi, akses layanan kesehatan, sumber daya manusia, dan sarana prasarana juga menjadi persyaratan yang harus dipenuhi. Riset ini juga menghasilkan konsep ekowisata yang mencakup 14 indikator pengelolaan konservasi, 9 indikator manfaat ekonomi, 6 indikator untuk memaksimalkan manfaat bagi masyarakat, pengunjung dan budaya serta meminimalkan dampak negatif, serta 12 indikator untuk manfaat bagi lingkungan dan meminimalkan dampak negatif konservasi. Kesimpulan dari riset ini menunjukkan sebanyak 108 responden pelaku usaha wisata selam (dive center) telah mampu memenuhi persyaratan yang terdapat dalam standar yang telah ditetapkan pemerintah, dan berharap untuk dapat mencapai tujuan keberlangsungan pengelolaan aset wisata dengan dukungan dari pemerintah, masyarakat lokal dan wisatawan. </p>
POTENSI PENGEMBANGAN STANDAR NASIONAL INDONESIA (SNI) PRODUK FURNITUR DARI KAYU
Authors: Wibowo Ari , Anggraeni Putty 
Published: February 2019

Pasar domestik furnitur tumbuh pesat seiring pertumbuhan di sektor properti perumahan, kondominium, hal tersebut membuka celah impor di pasar lokal setidaknya dalam 5 tahun terakhir. Dalam rangka melindungi pasar domestik, meningkatkan daya saing industri furnitur dan mendorong peningkatan ekspor, Pemerintah memiliki peran penting untuk mewujudkan hal tersebut. Penerapan Standar Nasional Indonesia (SNI) merupakan salah satu kebijakan dan strategi penting Pemerintah untuk meningkatkan daya saing industri. Tujuan penelitian ini adalah untuk mengidentifikasi pengembangan SNI produk furnitur dari kayu sehingga diharapkan dapat memperkuat daya saing produk furnitur. Data sekunder diperoleh melalui desk study Sistem Informasi SNI, ISO, IEC, sedangkan data primer diperoleh melalui kuesioner, wawancara dan Forum Grup Discussion dengan peneliti di bidang Standardisasi dan Serangga. Hasil penelitian menunjukan bahwa national differences perlu menjadi unsur yang ada dalam persyaratan SNI produk furnitur. Iklim Indonesia memiliki suhu udara yang hangat namun memiliki kelembaban udara yang tinggi menjadikan surga bagi rayap, faktor iklim Indonesia (negara tropis) dapat menjadi faktor national differences bagi pengembangan SNI. Rayap, jamur dan bubuk kayu di Indonesia memiliki variasi dibanding negara subtropis, sehingga Uji ketahanan rayap, Uji hama bubuk kayu, Uji ketahanan jamur, Uji kestabilan dimensi, Uji kadar air perlu dikembangkan dalam SNI produk furnitur dari kayu. Saat ini terdapat 84 SNI produk furnitur yang terdiri SNI produk (33%), metode uji (64%) dan Standar Dasar (1,5%), Lain-lain (1,5%).
PENGETAHUAN MASYARAKAT DKI JAKARTA TERHADAP PRODUK BERTANDA SNI
Authors: Wibowo Ari 
Published: February 2019

<p>Pemerintah melalui Badan Standardisasi Nasional hingga tahun 2017 telah menetapkan sebanyak 9766 SNI mencakup standar barang, jasa, sistem, proses dan personil. Standardisasi merupakan salah satu alat yang dapat digunakan untuk meningkatkan mutu, efisiensi produksi, memperlancar transaksi perdagangan, mewujudkan persaingan usaha yang sehat dan transparan. Penerapan tanda SNI pada suatu produk dapat membantu meyakinkan masyarakat bahwa produk tersebut aman, efisien dan baik untuk digunakan. Penelitian ini bertujuan untuk mengetahui pengetahuan masyarakat DKI Jakarta terhadap produk bertanda SNI, menggunakan teknik <em>convenience sampling</em> dengan kombinasi pertanyaan terbuka dan tertutup dalam wawancara. Hasil penelitian menunjukan bahwa 97% masyarakat mengetahui tentang SNI, Informasi didapat melalui produk sebesar 97%, media elektronik sebesar 81,6%, media cetak sebesar 57,6%, Lain-lain 13,6%. Walaupun pengetahuan masyarakat DKI Jakarta terhadap SNI sangat tinggi sebesar 97%, namun dari 38 produk SNI yang diujikan, pengetahuan didominasi terhadap produk tertentu yaitu helm pengendara kendaraan bermotor roda dua (97%), mainan anak (62%), Air Minum Dalam Kemasan (28%), Minyak Goreng (18%), Lampu (16%), Biskuit (12%), Garam (11%), Lain-lain (9%). Kesadaran masyarakat terhadap produk bertanda SNI masih rendah, Pemerintah perlu secara terus menerus dan berkesinambungan untuk memberikan program pendidikan dan pemasyarakatan sejak dini kepada masyarakat.</p><h3>Kata Kunci : Masyarakat, Standar Nasional Indonesia, Produk, tanda SNI</h3>
ANALYSIS OF AIRY POINT APPLICATION ON LINE SCALE CALIBRATION IN RCM LIPI
Authors: Kartika Nadya Larasati , Alfiyati Nurul 
Published: February 2019

<p>Calibration of line scale in the Research Center for Metrology LIPI Indonesia (RCM-LIPI) is traceable to one dimensional measuring machine (SIP machine). Capability of the SIP machine table used as the base of line scale, however, covers only up to 400 mm and can be extended to 1000 mm using shifting methods. Supporting point as a method to maintain line scale still straight during measurement should be applied on machine table. For line scale ranged 400 mm, supporting point can be attached because the whole artefact is on the table, while some of the industrial instruments have scales above 400 mm, this mean slightly difficult to attach supporting point. This paper described an appropriate supporting points setting and their influence in line scale calibration ranged 500 mm by designed two systems supporting point attachment, they are L = 500 mm and L = 350 mm. As for the supporting points, airy points were used, because they were the most suitable for line scales with the pattern at the top plane. Each design is analysed using error graph and E<sub>n </sub>score to determine the most suitable design for 500 mm line scale calibration<em>.</em></p>
A real-time optimal inverse planning for Gamma Knife radiosurgery by convex optimization: description of the system and first dosimetry data
Authors: Levivier Marc , Carrillo Rafael E. , Charrier Rémi , Martin André , Thiran Jean-Philippe 
Published: February 2019

OBJECTIVEThe authors developed a new, real-time interactive inverse planning approach, based on a fully convex framework, to be used for Gamma Knife radiosurgery.METHODSThe convex framework is based on the precomputation of a dictionary composed of the individual dose distributions of all possible shots, considering all their possible locations, sizes, and shapes inside the target volume. The convex problem is solved to determine the plan, i.e., which shots and with which weights, that will actually be used, considering a sparsity constraint on the shots to fulfill the constraints while minimizing the beam-on time. The system is called IntuitivePlan and allows data to be transferred from generated dose plans into the Gamma Knife treatment planning software for further dosimetry evaluation.RESULTSThe system has been very efficiently implemented, and an optimal plan is usually obtained in less than 1 to 2 minutes, depending on the complexity of the problem, on a desktop computer or in only a few minutes on a high-end laptop. Dosimetry data from 5 cases, 2 meningiomas and 3 vestibular schwannomas, were generated with IntuitivePlan. Results of evaluation of the dosimetry characteristics are very satisfactory and adequate in terms of conformity, selectivity, gradient, protection of organs at risk, and treatment time.CONCLUSIONSThe possibility of using optimal, interactive real-time inverse planning in conjunction with the Leksell Gamma Knife opens new perspectives in radiosurgery, especially considering the potential use of the full capabilities of the latest generations of the Leksell Gamma Knife. This approach gives new users the possibility of using the system for easier and quicker access to good-quality plans with a shorter technical training period and opens avenues for new planning strategies for expert users. The use of a convex optimization approach allows an optimal plan to be provided in a very short processing time. This way, innovative graphical user interfaces can be developed, allowing the user to interact directly with the planning system to graphically define the desired dose map and to modify on-the-fly the dose map by moving, in a very user-friendly manner, the isodose surfaces of an initial plan. Further independent quantitative prospective evaluation comparing inverse planned and forward planned cases is warranted to validate this novel and promising treatment planning approach.
Hypopituitarism after Gamma Knife surgery for postoperative nonfunctioning pituitary adenoma
Authors: Oh Ji Woong , Sung Kyoung Su , Moon Ju Hyung , Kim Eui Hyun , Chang Won Seok , Jung Hyun Ho , Chang Jin Woo , Park Yong Gou , Kim Sun Ho , Chang Jong Hee 
Published: February 2019

OBJECTIVEThis study investigated long-term follow-up data on the combined pituitary function test (CPFT) in patients who had undergone transsphenoidal surgery (TSS) for nonfunctioning pituitary adenoma (NFPA) to determine the clinical parameters indicative of hypopituitarism following postoperative Gamma Knife surgery (GKS).METHODSBetween 2001 and 2015, a total of 971 NFPA patients underwent TSS, and 76 of them (7.8%) underwent postoperative GKS. All 76 patients were evaluated with a CPFT before and after GKS. The hormonal states were analyzed based on the following parameters: relevant factors before GKS (age, sex, extent of resection, pre-GKS hormonal states, time interval between TSS and GKS), GKS-related factors (tumor volume; radiation dose to tumor, pituitary stalk, and normal gland; distance between tumor and stalk), and clinical outcomes (tumor control rate, changes in hormonal states, need for hormone-related medication due to hormonal changes).RESULTSOf the 971 NFPA patients, 797 had gross-total resection (GTR) and 174 had subtotal resection (STR). Twenty-five GTR patients (3.1%) and 51 STR patients (29.3%) underwent GKS. The average follow-up period after GKS was 53.5 ± 35.5 months, and the tumor control rate was 96%. Of the 76 patients who underwent GKS, 23 were excluded due to pre-GKS panhypopituitarism (22) or loss to follow-up (1). Hypopituitarism developed in 13 (24.5%) of the remaining 53 patients after GKS. A higher incidence of post-GKS hypopituitarism occurred in the patients with normal pre-GKS hormonal states (41.7%, 10/24) than in the patients with abnormal pre-GKS hormonal states (10.3%, 3/29; p = 0.024). Target tumor volume (4.7 ± 3.9 cm3), distance between tumor and pituitary stalk (2.0 ± 2.2 mm), stalk dose (cutoffs: mean dose 7.56 Gy, maximal dose 12.3 Gy), and normal gland dose (cutoffs: maximal dose 13.9 Gy, minimal dose 5.25 Gy) were factors predictive of post-GKS hypopituitarism (p < 0.05).CONCLUSIONSThis study analyzed the long-term follow-up CPFT data on hormonal changes in NFPA patients who underwent GKS after TSS. The authors propose a cutoff value for the radiation dose to the pituitary stalk and normal gland for the prevention of post-GKS hypopituitarism.
Volume-staged Gamma Knife radiosurgery for orbital venous malformations
Authors: Liu Dong , Li Yanhe , Zhang Yipei , Zhang Zhiyuan , Song Guoxiang , Xu Desheng 
Published: February 2019

OBJECTIVEThis article is a preliminary evaluation of the efficacy of volume-staged Gamma Knife radiosurgery (GKRS) in the treatment of patients with orbital venous malformations (OVMs).METHODSTwenty patients with moderate to large OVMs were treated with volume-staged GKRS between March 2005 and October 2015. The series included 8 male and 12 female patients with an average age of 22.5 years (range 9–45 years). The diagnoses were confirmed intraoperatively and at pathological examination in 14 cases and presumed in accordance with clinical and imaging findings in 6 cases. The median OVM volume was 12.2 cm3 (range 7.1–34.6 cm3). The median interval between stages was 10 months (range 6–12 months). The tumor margin dose for each stage ranged from 11.0 to 13.5 Gy. The median duration of follow-up was 45.5 months (range 18–98 months).RESULTSPeriodically scheduled MRI studies demonstrated evidence of a significant reduction of the original OVM volume in all cases. Visual acuity (VA) was preserved in 18 cases (90%). Five patients (25%) experienced vision improvement of varying degrees, and 13 (65%) experienced long-term preservation of VA at their pre-GKRS level. Deterioration in VA was observed in only 2 cases (10%). MRI demonstrated OVM regression after treatment in all cases, and all patients were found to have reduction of exophthalmos after volume-staged GKRS. Follow-up MRI revealed recurrence in only 1 case (5%). Three patients (15%) developed transient conjunctival edema.CONCLUSIONSThis retrospective investigation indicates that volume-staged GKRS provides an effective management option in selected patients with OVMs, providing excellent visual outcomes. The study adds substantial support for volume-staged GKRS as a major treatment for OVMs.
Distortion in magnetic resonance images obtained for stereotactic localization
Authors: Walton Lee , Hampshire Anna , Vaughan Paul , Forster David M. C. , Kemeny Andras A. , Radatz Matthias W. R. 
Published: February 2019

✓ The purpose of this paper was to note a potential source of error in magnetic resonance (MR) imaging. Magnetic resonance images were acquired for stereotactic planning for GKS of a vestibular schwannoma in a female patient. The images were acquired using three-dimensional sequence, which has been shown to produce minimal distortion effects.
The images were transferred to the planning workstation, but the coronal images were rejected.
By examination of the raw data and reconstruction of sagittal images through the localizer side plate, it was clearly seen that the image of the square localizer system was grossly distorted.
The patient was returned to the MR imager for further studies and a metal clasp on her brassiere was identified as the cause of the distortion.
Image registration and calculation of a biologically effective dose for multisession radiosurgical treatments
Authors: Knisely Jonathan P. , Bond James E. , Yue Ning J. , Studholme Colin , de Lotbinière Alain C. J. 
Published: February 2019

✓ The purpose of this study was to develop techniques for registering image sets associated with staged or multifraction radiosurgical treatments of large targets with the Leksell gamma knife to transform shot coordinates between treatment sessions and produce cumulative dose distributions and to investigate the theoretical biological effects of such protracted treatments by means of such concepts as the linear—quadratic model and biologically effective dose.
An image registration technique based on normalized mutual information was adapted to produce one fused-image study from an imaging series acquired during distinct treatment sessions. A spreadsheet computer program was developed to determine coordinate transformations between the associated stereotactic coordinate systems based on digitized coordinates of fiducial markers appearing on the fused images. Coordinates of shots used during one treatment session could then be transformed to the stereotactic space of another session, and cumulative dose distributions could be computed. The procedure was applied to the two-stage treatment of a giant arteriovenous malformation (AVM). Overall uncertainty in each transformed shot position is approximately 0.7 mm.
An effective single-fraction dose (Deff) was defined and computed for the two-stage AVM treatment. The simple summed dose distribution was compared with the Deff distribution. Because dose values differ significantly in overlap regions between the individual distributions, the clinical usefulness of the simple cumulative distribution is dubious. It may be useful for a future update of the GammaPlan treatment planning software to generate effective single-session dose distributions for such cases.
A feasibility study of 18F-fluorodeoxyglucose positron emission tomography targeting and simultaneous integrated boost for intensity-modulated radiosurgery and radiotherapy
Authors: Solberg Timothy D. , Agazaryan Nzhde , Goss Bryan W. , Dahlbom Magnus , Lee Steve P. 
Published: February 2019

Object. The authors hypothesized that the efficacy of intensity-modulated radiation therapy (IMRT) can be enhanced by selectively increasing the radiation dose to the biologically active positron emission tomography (PET)-documented positive tumor subregions while simultaneously maintaining the overall clinically established target dose.
Methods. The authors undertook a feasibility study to evaluate IMRT PET/computerized tomography (CT) protocol for boost treatment in selected cancer patients. Prior to treatment, FDG-PET and CT scans were acquired using an integrated PET/CT scanner, ensuring accurate correlation between image sets. After acquisition, tumor volume and objects-at-risk (OARs) were outlined on the CT scans; any PET-positive tumor subregions were similarly outlined. Daily dosages of 1.8 to 2 Gy were prescribed to tumor volume and the margin whereas additional dosages of 10 to 20% were delivered to PET-positive subregions. Dosage—volume histogram—derived constraints were used in inverse planning to specify the desired dose to one or more PET-positive tumor subregions, CT-delineated tumor volume, and OARs. The IMRT treatment was delivered using a micromultileaf collimator.
Simultaneous integrated boost radiation was successfully delivered using IMRT with PET/CT planning. Excellent dose conformality was achieved in the tumor volume and the dose to PET-positive tumor subregions was increased while minimizing the dose to OARs.
Conclusions. When coupled with IMRT, PET/CT scanning allows dose escalation to biologically active subregions within the tumor volume. Further study is needed to determine if dose escalation to FDG-PET—active sites correlates with improved treatment outcome. Finally, in extracranial sites, PET scanning should only be performed with a dedicated PET/CT device because present image fusion technologies are inadequate for accurately registering deformable objects.
KAJIAN MUTU STIK KENTANG (Solanum tuberrasum L.) DENGAN LAMA PERENDAMAN DALAM NATRIUM BISULFIT
Authors: Saputrayadi Adi , Marianah Marianah 
Published: February 2019

Tujuan dari penelitian ini adalah untuk mendapatkan mutu stik terbaik dengan perlakuan lama perendaman dalam Natrium Bisulfit yang disukai konsumen dan untuk mengetahui waktu lama perendaman terbaik dalam Natrium bisulfit untuk menghasilkan stik kentang yang baik dari sifat kimia dan organoleptiknya. Metode yang digunakan dalam penelitian ini adalah metode eksprimental. Tahapan penelitian ini terdiri dari: (1) proses pengolahan kentang menjadi stik dengan perlakuan lama perendaman dalam natrium bisulfit, (2) analisis kadar air dan kadar abu stik kentang, (3) analisis sifat organoleptik stik kentang. (4) Pengolahan dan Analisis data. Berdasarkan hasil analisis, semakin lama waktu perendaman dalam natrium bisulfit, maka kadar air stik kentang semakin turun. Hal tersebut disebabkan karena Semakin lama waktu perendaman dalam natrium bisulfit maka semakin banyak pula natrium bisulfit yang diserap stik kentang, sehingga akan semakin banyak dapat menyerap air. Hal tersebut disebabkan karena natrium bisulfit bersifat garam, dan garam itu sendiri bersifat higroskopis atau dapat menyerap air. Jadi semakin lama waktu perendaman stik kentang dalam natrium bisulfit maka akan semakin banyak pula air yang diserap, sehingga kadar air pada bahan akan semakin berkurang. Sebaliknya untuk analisis kadar abu menunjukkan bahwa semakin lama waktu perendaman dalam natrium bisulfit, maka kadar abu yang terdapat dalam stik kentang semakin tinggi. Hal ini ditunjang oleh pendapat Winarno, bahwa semakin lama waktu perendaman dalam natrium bisulfit maka semakin tinggi provitamin A ( Abu ) yang terkandung dalam bahan pangan. Senada dengan pendapat Puspitasari menyatakan bahwa abu merupakan residu organik dalam bahan pangan. Jumlah komposisi abu dalam minaral tergantung pada bahan pangan serta metode analisis yang digunakan, salah satunya waktu perendaman. Pada penilaian terhadap sifat organoleptik stik kentang terhadap parameter warna, aroma, rasa dan tekstur menunjukkan bahwa stik kentang dengan lama perendaman 60 menit tingkat kesukaan tertinggi dibandingkan dengan keempat perlakuan yang lainnya. Hal ini disebabkan karena dengan waktu perendaman selama 60 menit dalam natrium bisulfit menghasilkan warna kuning hinga putih kekuningan, tekstur yang renyah, serta rasa dan aroma yang paling disukai panelis.