Modification of Reinforced Concrete Retaining Wall at Pilangbango Reservoir Construction Project Madiun, East Java

The reservoir is the tendon of water in order to accommodate the excess rain water in the rainy season and its utilization in the dry season for various purposes, both in the field of agriculture as well as the interests of the community. To find out the cause of the crack wall of the reservoir Pilangbango Madiun, East Java, then do the test strongly press on concrete walls and soil investigations on the area of the reservoir. Spunpile 400 mm in diameter used by the mounting distance 200 cm and a depth of 12 m and pole mounted on the heels of concrete walls. Manual calculation of the results and analysis of the Finite Element program it can be concluded that in the presence of an additional retaining her 400 spunpile mm using a distance 200 cm and a depth of 12 m, retaining wall construction is then quite able to hold style pillow case and Sliding with style has a safety factor more than 1.5. So the movement of the sliding walls do not happen again

Komunikasi Data Bluetooth untuk Perangkat Informasi Persebaran Ikan (Portable Virtual Assistant) pada Kapal Nelayan Tradisional

Informasi mengenai data persebaran ikan merupakan informasi yang sangat berguna untuk nelayan dalam menemukan lokasi persebaran ikan. Informasi tersebut dikeluarkan oleh Balai Riset dan Observasi Laut dari kementrian Kelautan yang berupa data lokasi latitude dan longitude. Layanan ini berupa peta digital, peta tersebut kita kenal dengan Peta Perkiraan Daerah Penangkapan Ikan (PPDPI). Pada Kenyataannya masih banyak nelayan yang kurang memanfaatkan informasi tersebut yang menyebabkan hasil tangkap ikan oleh nelayan kurang maksimal. Penelitian ini membuat prototipe perangkat portabel navigasi untuk menemukan lokasi sebaran ikan. Prototipe bekerja berdasarkan data informasi yang berupa data latitude dan longitude dari Balai Riset dan Observasi Laut. Dengan memasukan data persebaran ikan maka jarak lokasi dan arah lokasi target dapat diketahui. Data informasi dapat dimasukkan kedalam prototipe navigasi dengan menggunakan komunikasi bluetooth  yang kemudian data tersebut diolah oleh mikrokontroller. Sensor yang digunakan dalam perangkat adalah sensor GPS dan sensor kompas. Hasil penelitian didapatkan prototipe navigasi dapat menghitung jarak lokasi tujuan terhadap lokasi awal dengan tingkat keberhasilan sebesar 99.404106% dan pengukuran sudut target lokasi tujuan dengan tingkat keberhasilan sebesar 99.0271%

Profil Pasien dengan Gangguan Tidur yang Menjalani Polisomnografi (PSG) di Rumah Sakit Saiful Anwar Malang 2014 – 2017.

Latar Belakang : Gangguan tidur merupakan kumpulan kondisi yang dapat dinilai dari adanya gangguan dalam durasi, kualitas, atau waktu tidur. Polysomnography (PSG) merupakan salah satu pemeriksaan diagnostik gangguan tidur namun belum banyak dilakukan di Indonesia. Rumah Sakit Saiful Anwar (RSSA) Malang adalah salah satu rumah sakit yang memiliki pelayanan pemeriksaan polysomnography. Penelitian ini bertujuan untuk mengetahui profil pasien yang menjalani pemeriksaan PSG di RSSA. PSG penting untuk instrumen diagnostik gangguan tidur. Metode : Studi deskriptif non analitik dari rekam medik 46 pasien yang menjalani pemeriksaan PSG di RSSA Malang 1 Juli 2014 - 31 Maret 2017. Hasil : Sampel berjumlah 46 orang yang terdiri dari 22(47.8%) orang laki-laki dan 24(52.2%) orang wanita. Kelompok usia 0-11 tahun 10(21.7 %) orang, 12-25 tahun 11(23.9 %) orang, 26-45 tahun 10(21.7 %) orang, 46-65 13(28.3%) dan diatas 65 tahun 2(4.3 %). Pasien dengan Mallampati Skor (MS) 1 8(17.4 %) orang, MS 2 21(45.7%) orang, MS 3 15(32.6%) orang, MS 4 2(4.3%) orang. Pasien dengan keluhan sulit tidur 10(21.7%) orang, mengorok 29(63%), mudah mengantuk 5(10.9%) orang dan keluhan lain 2(4.3%). Hasil pemeriksaan Apnea Hypopnea Indeks (AHI) dengan PSG, didapatkan hasil normal 11(23.9%) orang, mild Obstructive Sleep Apnea (OSA) 6(13%) orang, moderate OSA 20(43.5 %) orang dan severe OSA 9( 19.6%) orang. Kesimpulan: Hasil pemeriksaan PSG di RSSA terbanyak adalah wanita, dengan usia terbanyak adalah usia 46-65 tahun, dengan skor Malampati 2 dan keluhan terbanyak adalah mengorok. Hasil indeks AHI paling banyak moderate OSA

A new high-performance proton-conducting electrolyte for next-generation solid oxide fuel cells

N. Radenahmad and A. Afif are thankful to Universiti Brunei Darussalam for sponsoring the UBD graduate scholarship to perform Ph.D. work at Brunei Darussalam. The authors are also grateful to the late Professor Sten Eriksson for supporting a summer scholarship for NR to accomplish a part of this work at Chalmers University of Technology, Sweden. This work was also partially funded by research grant UBD/OVAORI/CRGWG(006)/161201.Conventional solid oxide fuel cells (SOFCs) are operable at high temperatures (700 – 1,000 °C) with the most commonly used electrolyte, yttria‐stabilized zirconia (YSZ). SOFC R&D activities have thus been carried out to reduce the SOFC operating temperature. At intermediate temperatures (400 – 700 °C), barium cerate (BaCeO3) and barium zirconate (BaZrO3) are good candidates for use as proton‐conducting electrolytes due to their promising electrochemical characteristics. Here, we combined two widely studied proton‐conducting materials with two dopants and discovered an attractive composition for the investigation of electrochemical behaviors. Ba0.9Sr0.1Ce0.5Zr0.35Y0.1Sm0.05O3‐δδ(BSCZYSm), a perovskite‐type polycrystalline material, has shown very promising properties to be used as proton‐conducting electrolytes at intermediate temperature range. BSCZYSm shows a high proton conductivity of 4.167×10−3 S cm−1 in a wet argon atmosphere and peak power density of 581.7 mW cm−2 in Ni‐BSCZYSm | BSCZYSm | BSCF cell arrangement at 700 °C, which is one of the highest in comparison to proton‐conducting electrolyte‐based fuel cells reported till now.PostprintPeer reviewe

Study of the unknown HONO daytime source at a European suburban site during the MEGAPOLI summer and winter field campaigns

International audienceNitrous acid measurements were carried out during the MEGAPOLI summer and winter field campaigns at SIRTA observatory in Paris surroundings. Highly variable HONO levels were observed during the campaigns, ranging from 10 ppt to 500 ppt in summer and from 10 ppt to 1.7 ppb in winter. Significant HONO mixing ratios have also been measured during daytime hours, comprised between some tenth of ppt and 200 ppt for the summer campaign and between few ppt and 1 ppb for the winter campaign. Ancillary measurements, such as NOx , O3 , photolysis frequencies, meteorological parameters (pressure, temperature, relative humidity , wind speed and wind direction), black carbon concentration , total aerosol surface area, boundary layer height and soil moisture, were conducted during both campaigns. In addition, for the summer period, OH radical measurements were made with a CIMS (Chemical Ionisation Mass Spectrometer). This large dataset has been used to investigate the HONO budget in a suburban environment. To do so, calculations of HONO concentrations using PhotoStationary State (PSS) approach have been performed, for daytime hours. The comparison of these calculations with measured HONO concentrations revealed an underestimation of the calculations making evident a missing source term for both campaigns. This unknown HONO source exhibits a bell-shaped like average diurnal profile with a maximum around noon of approximately 0.7 ppb h−1 and 0.25 ppb h−1 , during summer and winter respectively. This source is the main HONO source during daytime hours for both campaigns. In both cases, this source shows a slight positive correlation with J (NO2) and the product between J (NO2) and soil moisture. This original approach had, thus, indicated that this missing source is photolytic and might be heterogeneous occurring at ground surface and involving water content available on the ground. Published by Copernicus Publications on behalf of the European Geosciences Union. 2806 V. Michoud et al.: Study of the unknown HONO daytime sourc

Hubungan Kadar HbA1c dan Risiko Obstructive Sleep Apnea Syndrome dengan Normal Tension Glaucoma di Kabupaten Malang.

TUJUAN: Untuk mengevaluasi korelasi antara HbA1c dan obstructive sleep apnea syndrome (OSAS) dengan normal-tension glaucoma (NTG) di Daerah Pedesaan METODE: Sebanyak 128 responden atau 256 mata dari Desa Sidorahayu, Cepokomulyo, dan Mendalanwangi di Malang, Jawa Timur, Indonesia dilakukan pemeriksaan meliputi usia, jenis kelamin, berat badan, dan tinggi badan. Variabel bebas yang diukur meliputi kadar HbA1c, risiko OSAS yang diukur dengan kuesioner STOP-Bang, pengukuran tekanan darah sistolik/diastolik, dan obesitas yang diukur dengan body mass index (BMI). Variabel dependen yang diukur meliputi NTG, mean defect (MD) yang diukur melalui perimetri serta retinal nerve fiber layer (RNFL), dan cup-to-disc ratio (CDR) vertikal yang diukur melalui optical coherence tomography. Hubungan antar variabel diuji dengan menggunakan uji regresi logistik. HASIL: Tidak ada hubungan antara skor STOP-Bang dengan NTG, MD, RNFL, dan CDR meskipun ketika kami stratifikasi sampel untuk responden obesitas (BMI 30 kg/m²), ditemukan bahwa risiko OSAS yang tinggi memiliki pengaruh yang signifikan terhadap CDR (p = 0,02; ATAU = 4,22). Jika responden memiliki risiko OSAS tinggi, risiko CDR besar empat kali lebih tinggi daripada risiko OSAS ringan. Ada hubungan antara kadar HbA1c tinggi (≥7%) dengan NTG (p = 0,03; OR = 3,33), RNFL (p = 0,04; OR = 2,22), dan CDR (p = 0,05; OR = 2,05). Jika responden menderita diabetes, risiko NTG tiga kali lebih tinggi, risiko penipisan RNFL dua kali lebih tinggi, dan risiko CDR besar dua kali lebih tinggi dari HbA1c normal. Hasil menunjukkan hubungan yang signifikan secara statistik antara BMI dengan NTG dan MD, sistol dengan NTG, dan usia dengan NTG, MD, dan CDR. KESIMPULAN: Responden dengan kadar HbA1c tinggi memiliki peningkatan risiko NTG. Pada responden obesitas, risiko OSAS yang tinggi meningkatkan risiko CDR yang besar. Hubungan antara usia, sistol, dan BMI dengan NTG juga diidentifikasi

Improved mechanical strength, proton conductivity and power density in an ‘all-protonic’ ceramic fuel cell at intermediate temperature

The authors AA and NR would like to thank Universiti Brunei Darussalam for providing a UGS scholarship to perform this research. This work was supported by the UBD CRG project: UBD/OVACRI/CRGWG(006)/161201.Protonic ceramic fuel cells (PCFCs) have become the most efficient, clean and cost-effective electrochemical energy conversion devices in recent years. While significant progress has been made in developing proton conducting electrolyte materials, mechanical strength and durability still need to be improved for efficient applications. We report that adding 5 mol% Zn to the Y-doped barium cerate-zirconate perovskite electrolyte material can significantly improve the sintering properties, mechanical strength, durability and performance. Using same proton conducting material in anodes, electrolytes and cathodes to make a strong structural backbone shows clear advantages in mechanical strength over other arrangements with different materials. Rietveld analysis of the X-ray and neutron diffraction data of BaCe0.7Zr0.1Y0.15Zn0.05O3−δ (BCZYZn05) revealed a pure orthorhombic structure belonging to the Pbnm space group. Structural and electrochemical analyses indicate highly dense and high proton conductivity at intermediate temperature (400–700 °C). The anode-supported single cell, NiO-BCZYZn05|BCZYZn05|BSCF-BCZYZn05, demonstrates a peak power density of 872 mW cm−2 at 700 °C which is one of the highest power density in an all-protonic solid oxide fuel cell. This observation represents an important step towards commercially viable SOFC technology.Publisher PDFPeer reviewe

GrassPlot v. 2.00 – first update on the database of multi-scale plant diversity in Palaearctic grasslands

Abstract: GrassPlot is a collaborative vegetation-plot database organised by the Eurasian Dry Grassland Group (EDGG) and listed in the Global Index of Vegetation-Plot Databases (GIVD ID EU-00-003). Following a previous Long Database Report (Dengler et al. 2018, Phyto- coenologia 48, 331–347), we provide here the first update on content and functionality of GrassPlot. The current version (GrassPlot v. 2.00) contains a total of 190,673 plots of different grain sizes across 28,171 independent plots, with 4,654 nested-plot series including at least four grain sizes. The database has improved its content as well as its functionality, including addition and harmonization of header data (land use, information on nestedness, structure and ecology) and preparation of species composition data. Currently, GrassPlot data are intensively used for broad-scale analyses of different aspects of alpha and beta diversity in grassland ecosystems