bluuebunny/crossref_metadata_2025 huggingface dataset:
Perancangan dan Realisasi Antena Mikrostrip Log Periodik dengan Elemen Parasitik Air Gap untuk Aplikasi TV Digital DVB-T2
Authors: SURJATI INDRA , ALAM SYAH , NINGSIH YULI KURNIA
Published: May 2019

ABSTRAKPenelitian ini mengusulkan desain dan prototipe antena mikrostrip log periodik yang dikembangkan dengan metode parasitik air gap (celah udara) untuk aplikasi TV digital pada rentang frekuensi 478-694 MHz. Penggunaan elemen parasitik dengan celah udara bertujuan untuk meningkatkan nilai gain pada antena. Dari hasil pengukuran diperoleh nilai return loss sebesar -20.27 dB dan VSWR sebesar 1.31 pada frekuensi kerja 600 MHz. Bandwidth yang dihasilkan dari antena yang telah dipabrikasi adalah 273 MHz dengan rentang frekuensi kerja 461 MHz – 734 MHz. Gain yang dihasilkan dari antena mikrostrip log periodik dengan elemen parasitik adalah 16.67 dB pada frekuensi kerja 600 MHz atau meningkat 40.02 % dibandingkan dengan log periodik konvensional yang telah didesain sebelumnya. Dari keseluruhan hasil yang diperoleh maka dapat disimpulkan bahwa antena yang diusulkan dapat digunanakan sebagai antena penerima untuk aplikasi TV Digital di Indonesia.Kata kunci: antena, mikrostrip, log periodik, parasitik, celah udara ABSTRACTThis study proposes the design and prototype of log periodic microstrip antenna which was developed using the parasitic air gap for digital TV applications with a frequency range of 478-694 MHz. The use of parasitic elements with air gap aims to increase the gain of the antenna. From the measurement results, proposed antenna obtained return loss of -20.27 dB and VSWR of 1.31 at the working frequency of 600 MHz. The bandwidth produced from proposed antenna is 273 MHz with a working frequency range of 461 MHz - 734 MHz. The gain generated from log periodic microstrip antenna with parasitic element is 16.67 dB at the working frequency of 600 MHz or increased 40.02 % compared with conventional log periodic that have been designed before. From the overall results obtained, it can be concluded that the proposed antenna can be used as receiver antenna for Digital TV applications in Indonesia.Keywords: antenna, microstrip, log periodic, parasitic, air gap
PENGEMBANGAN DAN VALIDASI METODE KROMATOGRAFI CAIR KINERJA TINGGI (KCKT) UNTUK ESTIMASI KADAR SIMULTAN ANTIEMETIK PIRIDOKSIN HIDROKLORIDA DAN PIRATIAZIN TEOKLAT DALAM BENTUK SEDIAAN TABLET
Authors: Alatas Fikri , Sujono Hernandi , Sucipto Woro Artati
Published: May 2019

Abstrak

 

Metode kromatografi cair kinerja tinggi (KCKT) dengan detektor ultra lembayung telah dikembangkan dan divalidasi untuk estimasi kadar secara simultan campuran piridoksin hidroklorida (PH) dan piratiazin teoklat (PT)dalam sediaan tablet antiemetik. Proses pemisahan terjadi dalam kolom Inertsil® ODS-3 pada panjang gelombang 280 nm dengan laju alir 1,0 mL/menit. Fase gerak yang optimal untuk pemisahan adalah campuran methanol-asam asetat 1% (20:80) dengan waktu retensi PH dan PT berturut-turut adalah 1,2 dan 9,8 menit. Perolehan kembali PH dan PT berturut-turut adalah 100,13 dan 99,78 %. Batas deteksi untuk PH dan PT berturut-turut adalah 0,21 dan 0,22 µg/mL, sedangkan batas kuantisasinya berturut-turut adalah 0,70 dan  0,72 µg/mL. Metode ini dapat diterapkan sebagai metode untuk estimasi kadar campuran piridoksin hidroklorida dan piratiazin teoklat dalam bentuk sediaan tablet secara simultan.

 

Kata kunci: Piridoksin hidroklorida, piratiazin teoklat, KCKT, tablet

 

Development and validation of high performance liquid chromatography (HPLC) method for simultaneous estimation of antiemetic pyridoxyne hydrochloride and pyrathiazine theoclate in tablet dosage form

 

Abstract

 

The high performance liquid chromatography (HPLC) method with an ultra violet detector has been developed and validated for simultaneous estimation of pyridoxine hydrochloride (PH) and pyrathiazine theoclate (PT) in antiemetic tablet preparations. The separation process occurs in the Inertsil® ODS-3 column at a wavelength of 280 nm with a flow rate of 1.0 mL /min. The optimal mobile phase for separation is a mixture of methanol-acetic acid 1% (20:80) with the retention times of PH and PT 1.2 and 9.8 minutes respectively. The recoveries of PH and PT were 100.13 and 99.78%, respectively. The detection limits for PH and PT were 0.21 and 0.22 µg / mL respectively, while the quantisation limits were 0.70 and 0.72 µg / mL, respectively. This method can be applied as a method for simultaneous estimating the levels of pyridoxine hydrochloride and pyrathiazine theoclate in tablet dosage form.

 

Keywords: Pyridoxine hydrochloride, pyrathiazine theoclate, HPLC, tablet
Кристаллическая структура Na2[OsCl6]
Authors: Рудницкая О.В. , Култышкина Е.К. , Доброхотова Е.В. , Терёшина Т.А. , Попова А.С. , Зубавичус Я.В. , Хрусталёв В.Н.
Published: May 2019

Взаимодействием Н2[OsCl6]⋅nH2O с NaCl в кипящей концентрированной соляной кислоте получена соль Na2[OsCl6]. По данным рентгеноструктурного анализа вещество кристаллизуется в кубической сингонии, пр. гр. Fm-3m, а = 9.7461(11) Å, V = 925.8(3) Å3, Z = 4, R1 = 0.029, wR2 = 0.070 Соединение охарактеризовано методами электронной абсорбционной и ИК спектроскопии.
Синтез и электрофоретическое концентрирование наночастиц гидроксиапатита в обратных мицеллах оксиэтилированного ПАВ
Authors: Подлипская Т.Ю. , Булавченко А.И.
Published: May 2019

Методом фотон-корреляционной спектроскопии исследовано образование наночастиц гидроксиапатита в обратных мицеллах оксиэтилированного ПАВ — Tergitol NP-4 в зависимости от солюбилизационной емкости мицеллярного раствора. Получены стабильные органозоли и в присутствии анионного ПАВ—AOT проведено электрофоретическое концентрирование и отделение наночастиц гидроксиапатита от избытка ПАВ и побочных продуктов синтеза. По данным просвечивающей электронной микроскопии, форма наночастиц гидроксиапатита вытянутая (длина 40—80 нм, толщина 5—20 нм), что хорошо согласуется с n-усредненным гидродинамическим диаметром, определенным методом фотон-корреляционной спектроскопии. Наночастицы положительно заряжены, их ζ-потенциал изменяется от 10 мВ до 42 мВ в зависимости от типа ПАВ и растворителя.
Two novel tungstate metal-organic complexes: Crystal structures and anticancer activity in osteogenic sarcoma
Authors: Wang Z. , She W. , Luo X.-L. , Zeng Y.-H. , Wang W.-J.
Published: May 2019

Two novel metal-organic compounds based on tungstate ― [Ni(HL1)2(Mo8O26)]⋅5H2O (1, L1 = 4-[5-(1H-pyrazol-4-yl)-4H-[1,2,4]triazol-3-yl]-pyridine) and [{Ni4(L2)4(H2O)6}(H3PMo12O40)]⋅7H2O (2, L2 = 2-(3-carboxypyridin-2-yl) nicotinic acid) ― are hydrothermally synthesized and characterized by single crystal X-ray diffraction as well as elemental analysis. In addition, the in vitro anticancer activity of compounds 1 and 2 on three human osteogenic sarcoma cells (MG63, U2OS, and 143B) is further determined via the MTT assay.
Comportamiento agonístico del mosquero de Hammond (Empidonax hammondii) en el sapo pinero (Incilius occidentalis)
Authors: Alvarez-Alvarez Edson A. , Santos-Ramírez Ulises , Almazán-Núñez R. Carlos
Published: May 2019

La agresividad es un comportamiento agonístico importante en los animales, con influencia en la supervivencia y éxito reproductivo de las especies. Los papamoscas (Tyrannidae) exhiben conductas sociales altamente visibles, pero poco se ha documentado sobre su comportamiento agonístico. Registramos una conducta agresiva del mosquero de Hammond (Empidonax hammondii) sobre el sapo pinero (Incilius occidentalis) en un bosque de pino-encino de Omiltemi, Guerrero, México. De acuerdo con nuestra observación y a lo reportado en la literatura para otros mosqueros, E. hammondii puede presentar conductas atípicas relacionadas con el ataque o la depredación de anfibios de talla pequeña.
ANALISIS KEJADIAN BENCANA TANAH LONGSOR TANGGAL 12 DESEMBER 2014 DI DUSUN JEMBLUNG, DESA SAMPANG, KECAMATAN KARANGKOBAR, KABUPATEN BANJARNEGARA, PROVINSI JAWA TENGAH
Authors: Naryanto Heru Sri
Published: May 2019

AbstrakKejadian bencana tanah longsor semakin sering terjadi di Indonesia, termasuk di Kabupaten Banjarnegara. Bencana tanah longsor kembali menimpa warga Dusun Jemblung, Desa Sampang, Kecamatan Karangkobar, Kabupaten Banjarnegara, Provinsi Jawa Tengah pada hari Jumat, 12 Desember 2014 jam 17.30 WIB. Tipologi tanah longsor yang terjadi adalah tipe rotasi, yang kemudian ke arah bawah berkembang menjadi aliran debris akibat material longsoran yang bercampur dengan massa air yang sangat jenuh. Faktor-faktor yang mempengaruhi terjadinya tanah longsor di Banjarnegara 12 Desember 2014 antara lain adalah: geomorfologi terbentuk oleh perbukitan di sedang sampai terjal, batuan penutup berupa soil berasal dari pelapukan batuan breksi vulkanik, terbentuknya rekahan batuan di bagian atas mahkota longsor, curah hujan yang sangat ekstrim, terbentuk mataair pada bagian atas dan tengah bukit, tataguna lahan yang sudah banyak berubah dan aktivitas manusia yang sudah menjarah daerah kritis. Banyak faktor-faktor yang mempengaruhi terjadinya tanah longsor, tetapi dari hasil analisis ada tiga faktor utama penyebab terjadinya tanah longsor yaitu: terjadinya hujan ekstrim (lebat) selama tiga hari berturut-turut sebelum terjadi longsor, topografi pembentuk tanah longsor sangat terjal, tanah (soil) hasil pelapukan batuan sangat tebal dan bersifat menyerap air sehingga mudah jenuh. Berkaitan dengan hal tersebut sangat dibutuhkan berbagai kegiatan pengurangan risiko bencana (PRB) untuk meminimalisasi jumlah korban baik jiwa maupun harta. Kata kunci: Tanah Longsor, Banjarnegara, Topografi Terjal, Soil Tebal, Curah Hujan Ekstrim, Pengurangan Risiko Bencana
ANALISIS GEMPA SUMBA BARAT 2016 ATAS MINIMNYA DAMPAK YANG DITIMBULKAN
Authors: Wisyanto Wisyanto
Published: May 2019

Gempa Sumba Februari 2016 yang berepisenter di darat dan dengan magnitudo 6,6 Mb ternyata tidak membawa dampak serius di Sumba Barat. Hal ini telah menarik perhatian, sehingga dilakukan kajian lapangan terhadap peristiwa ini. Metoda kajian yang dilakukan, selain dengan pemahaman data sekunder, juga dilakukan kajian lapangan disepanjang lintasan Kota Waykabubak sampai ke pesisir selatan di sekitar Daerah Wanokaka, dimana episenter berada. Kajian lapangan meliputi pengamatan aspek geologi, dampak gempa terhadap bangunan dan pengukuran kuat struktur gedung. Hasil kajian menunjukkan bahwa tingginya kestabilan kerak kontinen yang menjadi batuan dasar Pulau Sumba, tipisnya soil sehingga fondasi bangunan langsung menumpu pada batuan dan masih banyaknya rumah panggung / rumah adat telah meminimalisir dampak gelombang gempa yang terjadi.
THE USE OF ONLINE WEB-BASED SOFTWARE I-TREE CANOPY AS AN ALTERNATIVE IN SUPPORTING COMMUNITY BASED ZERO DELTA Q PLANNING
Authors: Raharjo Akhmadi Puguh
Published: May 2019

Zero Delta Q is a policy to ensure that any additional surface runoff due to development does not further burden the drainage or river system. In case of Zero Delta Q application planning at the community level, a software is needed that can help classify and quantify the existing land cover class in area where the community is located. The purpose of this study is to look at the time needed and reliability of the i-Tree Canopy web-based software online in classifying and quantifying land cover classes on one of the sub-catchments in the Pesanggrahan River Basin. The land cover class is divided into six: trees, grasses / undergrowth plants, open area, water bodies, pavement / road and roof of the building. For comparison, an RBI map is used from the same area to see the extent of each class of land cover. Observation of each point requires an average time of 5.2 ± 1.0 seconds. The difference between direct sub-basin measurements using i-Tree Canopy and detailed analysis results from the RBI map is within the range of 0.41% or 0.36 Ha for each individual class of land cover. For a relatively small study area (under 100 ha) and when supported with reliable internet access, this web-based online software is sufficiently reliable in assisting the application planning process to support Zero Delta Q policy.
PARTISIPASI MASYARAKAT DALAM MENGURANGI RISIKO KERUSAKAN SITU-SITU DI KECAMATAN CIMANGGIS, KOTA DEPOK
Authors: Dewanti Tiffa Yuki , Naryanto Heru Sri
Published: May 2019

ABSTRACTDepok City has a function as a water catchment in reducing flooding in Jakarta City and in Depok City itself, the existence of existing sites is very important to be maximized. At present there are only 21 small lake in Depok City whose existence is still maintained. The conditions there each year decrease both in terms of quality and quantity. There are 6 small lake in Cimanggis subdistricts, namely: Situ Gadog, Situ Pedongkelan, Situ Rawa Kalong, Situ Tipar, Situ Jemblung, and Situ Rawa Gede, which as a whole have an area of 32.4 Ha. To maintain small lake preservation in the Cimanggis sub-district, damage risk reduction is urgently needed to sustain the small lake's existence in a sustainable manner. There are 5 variables of community participation in damage risk reduction in Cimanggis sub-district. Five variables to measure the level of community participation are community participation in the form of thoughts, community participation in the form of property, community participation in the form of energy, community participation in the form of skills, and community participation in social forms. Keywords: Community participation, small lake, Cimanggis, damage risk reduction
Pelatihan Motivasi dan Orientasi Masa Depan Peserta Didik dengan Menggunakan Peta Mimpi
Authors: Khairunnisa Yasmine , Rizkiana Fitria , Apriani Herlina , Prasiska Emilda
Published: May 2019

Abstrak: Sebagian besar anak-anak di SMAN 1 Kandangan tidak memiliki rencana masa depan yang jelas sesuai dengan keinginan mereka; masa depan mereka ditentukan oleh orang tua ataupun keadaan. Maka dari itu, kegiatan pengabdian kepada masyarakat dilaksanakan dengan tujuan untuk memupuk motivasi siswa-siswi di sekolah melalui pelatihan atau workshop untuk membantu mereka menemukan semangat belajarnya demi meraih cita-cita yang diinginkannya, serta membantu peserta didik yang masih kebingungan untuk memutuskan rencana masa depannya agar mampu secara mandiri merencanakan kehidupannya. Kegiatan ini dilaksanakan dalam bentuk workshop atau pelatihan dengan konsep seminar menggunakan media peta mimpi yang berisikan bagan rencana dari tahun 2018 hingga 2028. Pada kertas tersebut, peserta didik menuliskan secara rinci rencana masa depannya dalam rentang waktu 10 tahun. Kegiatan pengabdian kepada masyarakat di SMAN 1 Kandangan ini berjalan dengan lancar dan mendapat antusiasme yang besar dari siswa. Namun, kurang panjangnya waktu yang disediakan menyebabkan siswa kesulitan untuk mengisi peta mimpinya karena siswa terkesan dituntut untuk tiba-tiba menuliskan rencana masa depan secara detail tanpa diberikan waktu untuk berpikir. Dari hasil angket siswa didapatkan bahwa sebagian besar siswa memiliki minat yang besar untuk belajar dan meneruskan pendidikannya, serta mereka memiliki motivasi yang mendasari semangat mereka untuk belajar yang dipengaruhi oleh orang tua, teman, dan lingkungan sekitarnya. Kata kunci: motivasi; masa depan; peta mimpi
PEMBUATAN MINYAK KELAPA SECARA ENZIMATIS MENGGUNAKAN RIMPANG JAHE SEBAGAI KATALISATOR
Authors: Jannah Miftahul
Published: May 2019

Pembuatan minyak kelapa secara enzimatis menggunakan rimpang jahe sebagai katalisator menggunakan bahan baku santan kelapa. Untuk mendapatkan minyak kelapa digunakan metode enzimatis dengan memanfaatkan jahe merah sebagai sumber enzim zingibain. Enzim zingibain merupakan salah satu dari jenis enzim protease. Enzim zingibain ini digunakan sebagai katalisator yang berfungsi untuk mempercepat terjadinya reaksi terbentuknya minyak pada santan kelapa. Krim santan kelapa yang digunakan pada penelitian ini 200 ml dengan tiap variasi enzim sebanyak 2 ml, 4 ml, 6 ml dan 8 ml serta variasi waktu inkubasi selama 24 jam, 36 jam, 48 jam dan 60 jam. Hasil penelitian menunjukkan volume minyak yang paling tinggi dihasilkan pada penambahan 4 ml enzim dengan waktu inkubasi 48 jam dengan angka indeks bias (1.449), rendemen (25.5%), kadar air (0.0052%), kadar asam lemak bebas (0.1%) dan densitas (0.871).Keyword: Minyak Kelapa, Enzimatis, Jahe merah
Efektivitas Pemerintahan dalam Pelayanan Publik dengan SIKDES (Sistem Informasi Konektivitas Desa) (Studi Kasus di Desa Sidorejo Kecamatan Bandongan Kabupaten Magelang)
Authors: Rihardi Satrio Ageng , Yusliwidaka Arnanda , Mazid Sukron
Published: May 2019

Abstrak

Menghadapi era globalisasi yang penuh tantangan dan peluang, aparatur negara sebagai pelayan masyarakat yang memberikan pelayanan sebaik-baiknya menuju good governance. Salah satu program prioritas yang bersifat strategis adalah mampu menggunakan atau mengoperasionalkan sebuah aplikasi pelayanan yang cepat dan prima. Sistem berbasis IT untuk desa seperti Program aplikasi IT lainya, salah satunya adalah sistem SIKDES yaitu sistem informasi konektivitas desa. Efektivitas pemerintahan dalam pelayanan publik dengan sistem informasi konektivitas desa (SIKDES) studi kasus di Desa Sidorejo Kecamatan Bandongan Kabupaten Magelang memiliki tujuan untuk menjelaskan alasan keberhasilan Desa Sidorejo dalam menerapkan sistem SIKDES, hambatan Desa untuk menerapkan sistem SIKDES dalam pelayanan, peran perangkat desa sangat penting terhadap keberhasilan tersebut dan respon yang dirasakan masyarakat pengguna layanan SIKDES terkait penerapan sistem tersebut. Metode yang digunakan dalam penelitian ini adalah Metode penelitian yang digunakan dalam penelitian ini adalah jenis penelitian deskriptif kualitatif dengan pendekatan studi kasus. Data penelitian dikumpulkan melalui observasi, wawancara, dan dokumentasi. Keabsahan data dalam penelitian ini diperoleh melalui trianggulasi (sumber dan metode), diskusi ahli, dan pencocokan data dengan teori. Analisis data yang digunakan berdasarkan pada model analisis Miles dan Huberman yaitu reduksi data, penyajian data, dan penarikan kesimpulan. Hasil Penelitian pertama, penerapan SIKDES membawa perubahan pada kinerja pemerintah dan berdampak bagi masyarakat. Adanya sistem SIKDES tidak hanya bertujuan untuk meningkatkan kualitas pelayanan Desa Sidorejo namun juga memudahkan masyarakat untuk mendapatkan kebutuhan surat menyurat dari kantor Desa karena sudah berbasis teknologi. Kedua, Kendala utama penerapan sistem SIKDES adalah kemampuan sumber daya manusia dalam menggunakan sistem SIKDES dipelayanan kantor desa dalam hal ini adalah perangkat desa sehingga menyebabkan masih terhambatnya proses pelayanan, serta ketidakdisiplinan perangkat desa dalam mengikuti pelatihan yang diselenggarakan oleh Kecamatan maupun dari Kabupaten.
Akcijske filmske junakinje na početku novog tisućljeća
Authors: Sever Globan Irena , Kralj Ana
Published: May 2019

Suvremeni mediji su jedan od čimbenika koji sudjeluju u oblikovanju osobnog i društvenog identiteta, kao i vrijednosti na globalnoj razini, čemu pripada i definiranje i oblikovanje rodnih uloga. One se u medijima najčešće prikazuju kroz razne stereotipe, s time da se tradicionalno muške osobine češće naglašavaju kao vrjednije, dok je žena u medijima (posebno onima fikcijskog karaktera) svedena na objekt muške žudnje. Članak stoga pokušava otkriti je li u posljednjem desetljeću došlo do kakvih promjena s obzirom na (ne)stereotipan prikaz filmskih junaka i junakinja akcijskog žanra u holivudskim uspješnicama. Iz tog je razloga metodom analize sadržaja analizirano 86 glavnih i većih sporednih likova u deset najgledanijih filmova prema »Yearly Box Office« između 2007. i 2016. godine te je zaključeno da su rodni stereotipi i dalje prisutni u akcijskim filmskim uspješnicama, posebno s obzirom na premalu prisutnost ženskih glavnih likova te erotizaciju i objektivizaciju ženskog tijela.
Globalizacija migracije i profetizam pape Franje
Authors: Brebrić Stjepan
Published: May 2019

Aktualni svjetski fenomen migracija početkom trećega tisućljeća poprima takve razmjere da je opravdano govoriti o globalizaciji migracije. Izbjeglice i migranti za mnoge su lokalne političke zajednice, društva i kulture izazov s kojim se ne mogu i ne znaju uvijek suočiti na pravi način. Znatno bolja situacija nije niti s kršćanskim i drugim religijskim zajednicama u odnosu prema ovoj problematici, a konkretna rješenja još uvijek niti u dovoljnoj mjeri niti na adekvatan način nije u stanju ponuditi međunarodna politička zajednica. O suvremenim migracijama stoga se uglavnom govori kao o migrantskoj krizi današnjice. Papa Franjo, koji je od početka svojega pontifikata duboko ganut tragedijom izbjeglica i migranata naočigled ravnodušnosti pojedinaca i zajednica, glasno podiže svoj proročki glas, koji prate znakovite geste i konkretni prijedlozi sustavnoga i programskoga prevladavanja ove krizne situacije svijeta, čije uzroke razotkriva u dubokoj antropološkoj krizi čovječanstva. Njegovo proročko tumačenje suvremenih migracija kroz koncilsku kategoriju znakova vremena prvenstveno smjera promjeni mentaliteta ljudi i zamjeni paradigme dekadentnoga humanizma paradigmom cjelovitoga i kršćanski kompatibilnoga solidarnog humanizma budućnosti. Uočavajući pozitivne aspekte globalizacije migracije, potiče sve ljude na prihvaćanje i aktivno sudjelovanje u povijesnoj prilici globaliziranja bratstva, solidarnosti i ljubavi. To su općeniti okviri teološko-pastoralnih razrada pojedinačnih tema kroz koje se u ovome radu iščitavaju profetička obilježja pontifikata pape Franje u odnosu na fenomen suvremenih migracija.
Obrazovanje i evangelizacija
Authors: Novina Marina
Published: May 2019

Cilj je ovoga rada istaknuti ulogu i značenje obrazovanja kao jednog od oblika evangelizacije. Štoviše, detaljnijim uvidom u proces obrazovanja, odnos obrazovanja i kulture, te mjesta obrazovanja u društveno-političkom kontekstu ovo istraživanje dovodi do zaključka da su obrazovanje i evangelizacija dva moćna i neodvojiva procesa oblikovanja identiteta osobe jer svaka informacija ujedno je i formacija. Stoga možemo govoriti o nužnosti zauzetog sudjelovanja Crkve u odgojno-obrazovnim procesima i njegovu kreiranju. Briga za istinu i upoznavanje čovjeka s istinom o njegovu podrijetlu, dostojanstvu, pravima i odgovornostima, Crkvu čini odgovornom za informaciju koja ima moć transformacije, tj. oblikovanja čovjekova identiteta i lica. Briga za istinu implicira brigu za informaciju, srž je procesa evangelizacije i brige za čovjeka, njegov identitet i lice i put Crkve koji ona nikada ne smije napustiti.
Ground water quality of selected areas of Punjab and Sind Provinces, Pakistan: Chemical and microbiological aspects
Authors: Int Chem
Published: May 2019

The assessment of groundwater is essential for the estimation of suitability of water for safe use. An attempt has been made to study the groundwater of selected areas of Punjab (Sheikhupura & Sahiwal) and Sindh (Sindh, Jawar Dharki and Dharki), Pakistan. The results indicate that pH, color and odor were all within limits of WHO that is pH ranges 6.5–8.5, colorless and odorless, respectively. The high values of suspended solids were observed in the Sindh-1 and Dharki samples. Microbiologically only Sahiwal and Jawar Dharki were found fit for drinking purpose. Trace metals analysis of Sheikhupura-1 and Sindh-1 showed that values do not fall within limits of WHO for Iron. The ionic concentration analysis showed that high bicarbonate (HCO3-), ions are present in the samples of Sahiwal and Dharki; Sindh-1 and Jawar Dharki samples showed very high concentration for chloride ions, all samples were satisfactory level for sulphate (SO42-), sodium, magnesium and phosphate ions except samples of Sindh-1 and Jawar Dharki. High concentration of calcium and potassium ions was observed in samples of Sindh-1, while all other samples were found fit for drinking purposes in respect of nitrate, nitrite and ammonium ions. The high concentration of Fluoride was found only in Sheikhupura-2 samples.
MATERI PELATIHAN KADER POSBINDU PENYAKIT TIDAK MENULAR (PTM) : HIPERTENSI
Authors: Izhar M. Dody
Published: May 2019

Materi pelatihan Kader Posbindu Penyakit Tidak Menular Hipertensi adalah kegiatan pelatihan kepada kader bagaimana upaya promotif dan preventif diantaranya monitoring faktor risiko bersama PTM secara rutin dan periodik; konseling faktor risiko PTM tentang diet, aktifitas fisik, merokok, stress; penyuluhan / dialog interaktif sesuai dengan masalah PTM yang ada; Aktifitas fisik bersama seperti olah raga bersama, kerja bakti, senam, jalan santai; dan rujukan kasus faktor risiko sesuai kriteria klinis ke Puskesmas.
On the belief that beliefs should change according to evidence: Implications for conspiratorial, moral, paranormal, political, religious, and science beliefs
Authors: Pennycook Gordon , Cheyne James Allan , Koehler Derek J. , Fugelsang Jonathan Albert
Published: May 2019

Does one’s stance toward evidence evaluation and belief revision have relevance for actual beliefs? We investigate the role of having an actively open-minded thinking style about evidence (AOT-E) on a wide range of beliefs, values, and opinions. Participants indicated the extent to which they think beliefs (Study 1) or opinions (Studies 2 and 3) ought to change according to evidence on an 8-item scale. Across three studies with 1,692 participants from two different sources (Mechanical Turk and Lucid for Academics), we find that our short AOT-E scale correlates negatively with beliefs about topics ranging from extrasensory perception, to respect for tradition, to abortion, to God; and positively with topics ranging from anthropogenic global warming to support for free speech on college campuses. More broadly, the belief that beliefs should change according to evidence was robustly associated with political liberalism, the rejection of traditional moral values, the acceptance of science, and skepticism about religious, paranormal, and conspiratorial claims. However, we also find that AOT-E is more strongly predictive for political liberals (Democrats) than conservatives (Republicans). We conclude that socio-cognitive theories of belief (both specific and general) should take into account people’s beliefs about when and how beliefs should change – that is, meta-beliefs – but that further work is required to understand how meta-beliefs about evidence interact with political ideology.
Powerful Moderator Variables in Behavioral Science? Don’t Bet on Them (Version 3)
Authors: Sherman Ryne A. , Pashler Harold
Published: May 2019

The current upsurge of interest in research replicability (and the exposure of many failures of reproducibility) has led to a much discussion about the possible role of statistical moderation (i.e., variable × variable interactions) in behavioral and social science. These interactions are so widespread and powerful, it is often argued, that we should hardly be surprised when attempts to reproduce important findings frequently lead to failure. Prior literature provides little empirical evidence about how common powerful moderation is. Using five large-scale behavioral research datasets we sought to shed light on the issue. The data reflected several thousand people engaging in a variety of behaviors over considerable periods of time, and included hundreds of demographic and psychological independent variables (IVs). For each outcome variable, we measured the interaction of every pair of IVs. Many IVs had sizable main effects on behavior, but interactions were usually very small in magnitude. While there is no doubt that interactions can occur in behavioral science contexts, the priors revealed here suggest that this should be postulated as a last, not a first resort.
Non-invasive brain stimulation and fear extinction. A systematic review
Authors: Herrmann Martin J.
Published: May 2019

Background: Despite the high prevalence of stress- and anxiety-related disorders, corresponding therapeutic measures have not yet reached their full potential. Recently, a number of studies have investigated the additional benefit of non-invasive brain stimulation (NIBS) in the psychotherapy of anxiety disorders. In order to further improve the effectiveness of brain stimulation in combination with psychotherapy, it is necessary to focus more on the modulation of therapy-relevant learning processes. Methods: This systematic review presents the studies to date that have investigated modulation of fear extinction in humans using NIBS. Results: A total of 7 studies were identified and analyzed using either repetitive transcranial magnetic stimulation (rTMS) or transcranial direct current stimulation (tDCS) for fear extinction. Conclusions: The review shows that NIBS can improve extinction learning. The transfer of these results into clinical trials has already begun and will provide clarity on the optimal stimulation parameters in the coming years.
Reclaiming Stigmatized Narratives: The Networked Disclosure Landscape of #MeToo
Authors: Gallagher Ryan J. , Stowell Elizabeth , Parker Andrea G. , Welles Brooke Foucault
Published: May 2019

The social stigma looming over disclosures of sexual violence discourages many women from publicly sharing their stories, limiting their ability to seek support and obscuring the epidemic of sexual violence against women. By inviting women to share their ordinarily silenced stories, the hashtag #MeToo surfaced a network of survivors to confront this stigma. Through a mixed-methods analysis of over 1.5 million tweets posted during the first two weeks after #MeToo gained widespread popularity in 2017, we map the landscape of disclosures that emerged and disentangle the effects of network-level reciprocal disclosures, or disclosures made in reaction to seeing others disclose. We detail how survivors disclosed a diversity of sexual violence experiences in solidarity with others, composing nearly half of all authored tweets and comprising a disproportionate number of interactions within the #MeToo network. Further, we show that the more disclosures an individual potentially saw prior to disclosing, the more likely they were to share details with their disclosure. We argue that such network-level reciprocal disclosures may have reduced stigma, creating a counterpublic space safe for disclosure which, subsequently, generated more disclosures. Our work illustrates how feminist hashtag activism, like #MeToo, can unify individual and collective narratives to dismantle the stigma surrounding disclosures of sexual violence. Content warning: This article heavily discusses issues of sexual violence against women.
Stochastic and Momentum Analysis of Nepalese Stock Market
Authors: Vaidya Rashesh
Published: May 2019

The stochastic oscillator is one of the popular tools used by technical analysts. The tools are used mainly to find the overbought and oversold position in the stock market. The stochastic values are between 0-100 which helps to determine the market scenario. The two stochastic indicators are comprised of two lines namely; %K and %D. The investors using the short-term moving average follows %K and for long-term moving average for %D. Though, both are used for buy signal or sell signal by the investors. The basic concept is if, the value of %K is seen above %D, which reflects to sell position, which in context to Nepalese stock market, the scenario is seen during the month of June-July of every fiscal year. At the same time, momentum uses transaction signal or trade signal or the zero ‘0’ line to find the bearish or bullish trend of the market. The momentum of NEPSE index clearly pictures out the bullish and the bearish trend for a specific duration. If the momentum line touches the ‘zero line’, the NEPSE has changed its trend.
Research and Outcomes at the Truth and Reconciliation Commission
Authors: Miller James R.
Published: May 2019

Compared to other commissions of inquiry, the Truth and Reconciliation Commission (trc) that investigated residential schools in Canada has had a modest research output and influence on public policy. Although the commissioners worked hard to carry out their mandate and raise awareness of the importance of resolving the legacy of residential schooling and promoting reconciliation, their effectiveness was hampered by several factors. Opposition from some interest groups, including the federal government, complicated their efforts, while some of their own characteristics and approaches also contributed to their difficulties. The limitations imposed by the Indian Residential School Settlement Agreement that defined their assignment, the heavy reliance on legal talent within the commission, and the sheer size of the task they faced were some of the challenges confronting the trc. Ironically, the emphasis of the commission reports on the centrality of history and the commission’s definition of “reconciliation” might prove to be two of the most enduring elements of the trc’s legacy.
Scaling Up Programs: Reflections on the Importance of Process Evaluation
Authors: Parrott Andria , Carman Joanne Genova
Published: May 2019

Abstract: For more than a decade, policy makers and funding agencies have been focused on identifying innovative and successful programs and bringing them to scale. Evaluators play an important role in these scaling efforts by helping to document what works and by monitoring program implementation. They can also monitor the replication of taking innovative programs to scale. In this research and practice note, we reflect on our evaluation experiences with a public-private partnership designed to scale up a health and wellness program within a large, urban school district at ten elementary schools. In doing so, we highlight the importance of conducting a process evaluation at the beginning of the program to ensure that the program is being implemented as intended. We also describe how these early evaluation findings helped to improve the program during its second year.
Broken Exhaust Valve
Authors: Kallenbach Rudolf , Fichter Rudolf
Published: May 2019

A broken exhaust valve from the cylinder of a motor car had a 30-mm disk diam and 8-mm stem diam. The site of the fracture was directly where the valve cone joined the cylindrical stem. Both the cone and the stem were heavily scaled in the vicinity of the fracture; in some parts the scale has flaked off. Furthermore, the rim of the disk was badly damaged by secondary mechanical action. The core of the valve had a very fine austenitic microstructure with precipitations of numerous granular and very fine, mostly rounded carbides and tine segregation bands. A hard alloy facing was welded on to the valve seat. Fracture was a consequence of fatigue corrosion cracking, itself strongly promoted by the presence of sulphur compounds. The origin of these corrosive sulphur compounds could not be explained.
Contact Fatigue Failure of an Axle Shaft Spur Pinion
Authors: Alban Lester E.
Published: May 2019

One end of an axle shaft containing the integral spur pinion was submitted for examination, along with the report of a tooth pitting failure. The spur pinion, integral to the axle shaft, operated in a medium-size, off-highway truck at an open-pit mine, for “a relatively short time.” Only the pinion head had been returned. The shaft portion had been torch-cut away. Chemical analysis along with the microstructure confirmed the specified material was SAE 43BV12 Ni-Cr-Mo alloy steel. The mode of failure was surface contact fatigue through the shear plane subsurface at the lowest point of single-tooth contact. The cause of failure was tooth-tip interference from the mating gear teeth. Because the mating parts within the assembly had not been returned or examined, unanswered questions remained.
Thermal Analyses of a Polymer Failure
Authors: Kusy Robert P. , Whitley John Q.
Published: May 2019

Thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) were used to analyze an automotive polyoxymethylene (POM) sensor housing that was depolymerizing during service. It was found that a combination of heat, oxygen, and sulfuric acid attacked and caused premature failure of the part. POM should not be selected for automotive applications where elevated temperatures and acidic environments can exist. If exposure to acid is suspected, sodium bicarbonate should be applied to neutralize the surrounding environment, followed by copious quantities of water, and repeated until no effervescence is observed.
Creep Rupture in a Superheated Steam Transfer Line
Authors: da Silveira T.L. , Le May I.
Published: May 2019

Rupture occurred at a bend in a superheated steam transfer line between a header and a desuperheater of a boiler producing 230 t/h of steam at 540 deg C and 118 kPa. The boiler had operated for 77,000 h. Rupture occurred along the outer bend radius of the 168 mm diam tube, this being of 1 Cr, 0.5 Mo steel with a wall thickness of 14 mm. The design temperature of this tube was 490 deg C, but there is evidence that it was operating at a temperature much above 500 deg C. Metallographic analysis disclosed an advanced stage of creep damage accumulation in the form of local cracks, microcracks, and aligned damage centers which showed up as voids upon repeated polish-etch cycles. Because of the local nature of creep damage that can occur, any inspection that involves in situ metallography must be conducted at exactly the right or critical position or the presence of damage may not be detected.
Failure Analysis of a Large Centrifugal Blower
Authors: Tait R.B. , Garrett G.G. , Spencer D.P.
Published: May 2019

A fracture mechanics based failure analysis and life prediction of a large centrifugal fan made from low-carbon, medium-strength steel was undertaken following shortcomings in attempts to explain its fatigue life from start stop cycles alone. Measurements of the fracture toughness and flaw size at failure, coupled with quantitative SEM fractography using striation spacing methods, revealed that the cyclic stress amplitudes just prior to failure were much larger than expected, in this particular case. Subsequent improvements in fan design and fabrication have effectively alleviated the problem of slow, high cycle fatigue crack growth, at normal operating stresses in similar fans.
Turbine Blade Failures, Who Pays?
Authors: Missimer Jack R.
Published: May 2019

The assignment of financial liability for turbine blade failures in steam turbines rests on the ability to determine the damage mechanism or mechanisms responsible for the failure. A discussion is presented outlining various items to look for in a post-turbine blade failure investigation. The discussion centers around the question of how to determine whether the failure was a fatigue induced failure, occurring in accordance with normal life cycle estimates, or whether outside influences could have initiated or hastened the failure.
Failure Analysis of Brass Tubes
Authors: Lawrence Samuel J. , Bodnar Richard L.
Published: May 2019

Admiralty brass (Alloy C44300) cooling tubes which were part of a heat exchanger in a turbogenerator that provided electricity to a manufacturing plant failed. A mixture of non-recirculating city and “spring pit” water flowed through bundles of tubes to cool the oil in which they are immersed. However, a problem developed when several of the brass tubes cracked transversely, allowing cooling water to mix with the oil. The presence of a tensile stress, intergranular cracks, and a corrosion product suggested the tube failures resulted from stress-corrosion cracking. The main corrosion product was cupric hydroxychloride. In addition to switching to a more corrosion-resistant alloy, extreme care should be taken in the manufacturing of the replacement tube bundles to avoid imparting any residual tensile stresses in the tubing. Analyses of city and spring-pit water were recommended also, to determine which contained the least-harmful corrosive chemicals.
Recovery of a Type 304 Stainless Steel Piping System Contaminated with Chlorides
Authors: Stein A. A. , Zilberstein V. , Clancy W. S. , Davis G. J.
Published: May 2019

One inch diam Type 304 stainless steel piping was designed to carry containment atmosphere samples to an analyzer to monitor hydrogen and oxygen levels during operational and the design basis accident conditions that are postulated to occur in a boiling water reactor. Only one of six lines in the system had thru-wall cracks. Shallow incipient cracks were detected at the lowest elevations of one other line. The balance of the system had no signs of SCC attack. Chlorides and corrosion deposits in varying amounts were found throughout the system. The failure mechanism was transgranular, chloride, stress-corrosion cracking. Replacement decisions were based on the presence of SCC attack or heavy corrosion deposits indicative of extended exposure time to chloride-contaminated water. The existing uncracked pipe, about 75 percent of the piping in the system, was retained despite the presence of low level surface chlorides. Controls were implemented to insure that temperatures are kept below 150 deg F, or, walls of the pipe are moisture-free or the cumulative wetted period will never exceed 30 h.
Investigation of Intergranular Stress Corrosion Cracking in the Fuel Pool at Three Mile Island Unit 1
Authors: Czajkowski Carl J.
Published: May 2019

An intergranular stress-corrosion cracking failure of 304 stainless steel pipe in 2000 ppm B as H3BO3 + H2O at 100 deg C was investigated. Constant extension rate testing produced an intergranular type failure in material in air. Chemical analysis was performed on both the base metal and weld material, in addition to fractography, EPR testing and optical microscopy in discerning the mode of failure. Various effects of Cl-, O2 and MnS are discussed. Results indicated that the cause of failure was the severe sensitization coupled with probable contamination by S and possibly by Cl ions.
Thermal Exposure Assessment by Quantitative Microscopy and Selective Etching
Authors: Vander Voort George F.
Published: May 2019

The accident at Three Mile Island Unit No. 2 on 28 March 1979 was the worst nuclear accident in US history. By Jan 1990, it was possible to electrochemically machine coupons from the lower head using a specially designed tool. The specimens contained the ER308L stainless steel cladding and the A533 Grade B plate material to a depth of about mid-wall. The microstructures of these specimens were compared to that of specimens cut from the Midland, Michigan reactor vessel, made from the same grade and thickness but never placed in service. These specimens were subjected to known thermal treatments between 800 and 1100 deg C for periods of 1 to 100 min. Microstructural parameters in the control specimens and in those from TMI-2 were quantified. Selective etchants were used to better discriminate desired microstructural features, particularly in the cladding. This report is a progress report on the quantification of changes in both the degree of carbide precipitation and delta ferrite content and shape in the cladding as a function of temperature and time to refine the estimates of the maximum temperatures experienced.
Alloy 430 Ferritic Stainless Steel Welds Fail due to Stress-Corrosion Cracking in Heat-Recovery Steam Generator
Authors: Krafft H.
Published: May 2019

Alloy 430 stainless steel tube-to-header welds failed in a heat recovery steam generator (HRSG) within one year of commissioning. The HRSG was in a combined cycle, gas-fired, combustion turbine electric power plant. Alloy 430, a 17% Cr ferritic stainless steel, was selected because of its resistance to chloride and sulfuric acid dewpoint corrosion under conditions potentially present in the HRSG low-pressure feedwater economizer. Intergranular corrosion and cracking were found in the weld metal and heat-affected zones. The hardness in these regions was up to 35 HRC, and the weld had received a postweld heat treatment (PWHT). Metallographic examination revealed that the corroded areas contained undertempered martensite. Fully tempered weld areas with a hardness of 93 HRB were not attacked. No evidence of corrosion fatigue was found. Uneven temperature control during PWHT was the most likely cause of failure.
Investigation of Turbine Disc Cracking by Field Metallography
Authors: Cervoni A. , Clark M. A.
Published: May 2019

Stress-corrosion cracking of low-alloy steel turbine discs has emerged as a generic concern in nuclear generating stations. An investigation that made extensive use of field metallographic techniques to examine suspected cracking in such a component is described. The crack position, and its relationship to surface topographic features, were examined and recorded by magnetic rubber and high-resolution dental rubber replicating materials. Corrosion deposits on keyway surfaces and within the crack were collected with acetate foil replicas applied and then stripped from the keyway surfaces. Microstructural details were revealed by the use of field metallographic preparation techniques and replicated by acetate foil for examination with optical and scanning electron microscopes. It was possible by these techniques to establish the cracking mechanism as stress corrosion possibly related to chloride or sulphate ion steam contaminants. Subsequent sectioning and conventional metallography confirmed both the validity of the conclusions and the replication techniques.
Corrosion of Copper Cooling-Water Tubing in a Heat Exchanger
Authors: Khan A.H.
Published: May 2019

A straight-tube cooler type heat exchanger had been in service for about ten years serving a coal pulverizer in Georgia. Non-potable cooling water from a local lake passed through the inner surfaces of the copper tubing and was cooling the hot oil that surrounded the outer diametral surfaces. Several of the heat exchangers used in the same application at the plant had experienced a severe reduction in efficiency in the past few years. One heat exchanger reportedly experienced some form of leakage following discovery of oil contaminating the cooling water. This heat exchanger was the subject of a failure investigation to determine the cause and location of the leaks. Corrosion products primarily contained copper oxide, as would be expected from a copper tubing. The product also exhibited the presence of a significant amount of iron oxides. Metallographic cross sectioning of the tubes and microscopic analysis revealed several large and small well rounded corrosion pits present at the inner diametral surfaces. The cause of corrosion was attributed to corrosive waters that were not only corroding the copper, but were corroding steel pipes upstream from the tubing.
Failure Analysis of Boiler Water Wall-Tubes at a Power Generation Plant
Authors: El-Batahgy A. , Metwally W.
Published: May 2019

Several waterwall tubes in a power station boiler failed after ten years of service. The boiler is a suspension type equipped with 30 IK boxes where retractable soot blowers are inserted to clean the inside of the boiler using high-pressure steam. The tubes, which operate at 693 deg F (367 deg C) and 2935 psi (20.5 MPa), failed near the IK boxes as a result of thermal fatigue. Thermal fatigue damage was accelerated by repetitive exposure to water droplets from the soot blower and the associated rapid cooling.
Analysis of an Unusual Failure of a Steel Shaft in a Coal Pulverizer
Authors: Bodzin Jack J. , Houser Gordon W.
Published: May 2019

A shaft can crack twice before it fails. A Detroit electric plant had this experience with one in a coal pulverizer. Because the first crack rewelded partially (by friction) in service, the pulverizer remained serviceable until the second crack developed.