bluuebunny/crossref_metadata_2025 huggingface dataset:
UJI PRESTASI MESIN PENDINGIN KOMPRESI UAP YANG MENGGUNAKAN REFRIGERAN R22 DENGAN METODE PENGUJIAN AKTUAL DAN SIMULASI
Authors: Cappenberg Audri Deacy , Ramadan Haris
Published: May 2021

AbstrakSistem pengkondisian udara yang mengatur temperatur dan  kelembaban udara dalam ruangan, dalam pengoperasiannya membutuhkan refrigeran yang mudah menyerap dan melepaskan kalor. Setiap refrigerant memiliki karakteristik yang berbeda-beda yang mempengaruhi efek refrigerasi dan koefesien prestasi yang dihasilkan. R 22 adalah salah satu refrigeran yang memiliki karakteristik yang baik pada mesin pendingin. Software Genetron properties adalah sebuah software simulasi yang dapat menghitung aliran fluida atau refrigerant pada mesin pendingin. Genetron properties melakukan simulasi termodinamika untuk siklus kompresi uap dan memberikan hasil dalam bentuk tabulasi dan pada diagram Mollier diagram (h-s diagram). Pengujian prestasi mesin pendingin yang menggunakan  R-22 dilakukan secara aktual dan simulasi dengan menggunakan software genetron properties. Hasil pengujian dan perhitungan menunjukkan bahwa : Kerja kompresor, COP dan performance factor  pada mesin pendingin kompresi uap ketika high speed  adalah 0,528 kW,  8,42 dan 0,1187;  saat low speed adalah 0,528 kW; 8,52 dan 0,117.  COP dari   hasil pengujian dengan software genetron properties ketika high speed 2,193 saat low speed 1,415 hal ini dikarenakan mesin pendingin kompresi uap dalam keadaan tidak optimalKata Kunci : Mesin Pendingin, Kompresi Uap, COP AbstractAir conditioning system that regulates temperature and humidity in the room, in operation requires refrigerants that are easy to absorb and release heat. Each refrigerant has different characteristics that affect the effects of refrigeration and the performance coefficients produced. R 22 is one of the refrigerants that has good characteristics on cooling system. Genetron properties is a simulation software that can calculate fluid flow or refrigerant on a cooling sistem. Genetron properties perform thermodynamic simulations for vapor compression cycles and provide results in tabulation and Mollier diagram diagrams (h-s diagrams). Testing the performance of cooling system using R-22 is done in actual and simulated using genetron properties software. The test results and calculations show tha the work of compressor, COP and performance factors on vapor compression cooling system when high speed is 0.528 kW, 8.42 and 0.1187; when low speed is 0.528 kW; 8.52 and 0.117. COP from the results of testing with genetron software properties when high speed 2,193 at low speed 1,415 this is because the vapor compression of cooling system is in an optimal condition Keyword: Cooling system, vapor compression, COP
ANALISA PERHITUNGAN DAYA POMPA SENTRIFUGAL DI GEDUNG UNIVERSITAS 17AGUSTUS 1945 JAKARTA
Authors: Hidayat M Fajri , Fajri Nor
Published: May 2021

AbstrakPompa adalah suatu alat atau mesin untuk memindahkan cairan dari satu tempat ketempat lain melalui suatu media perpipaan dengan cara menambahkan energi pada cairan yang dipindahkan dan berlangsung secara terus menerus. Pompa yang digunakan dalam analisa ini yaitu Pompa Sentrifugal yang terdapat di gedung Universitas 17 Agustus 1945 Jakarta. Tujuan dari analisa ini yaitu untuk mengetahui kebutuhan air pada gedung Universitas 17 Agustus 1945 Jakarta. Kebutuhan air pada gedung Universitas 17 Agustus 1945 Jakarta dihitung berdasarkan luas lantai gedung dan pemakaian setiap dosen, karyawan, mahasiswa, dan rektorat di Universitas 17 Agustus 1945 Jakarta. Hasil analisa di dapatkan total kebutuhan air bersih pada gedung Universitas 17 Agustus 1945 Jakarta adalah 1.7910 Liter/hari. Kapasitas pompa sebesar 0.06 m3/s. Head total pompa sebesar 31.99 m. Putaran poros pompa yaitu 1500 rpm. Daya pompa sebesar 0.817 kW. Kecepatan spesifik sebesar 48.51 rpm. Dari hasil analisa dapat dinyatakan bahwa Pompa Sentrifugal yang berada di gedung Universitas 17 Agustus 1945 Jakarta sudah layak untuk digunakan. Kata Kunci : Kebutuhan air, kapasitas pompa, pompa sentrifugal Abstract          A pump is a device or a machine to move liquids from one place to another via a piping medium by adding energy to the fluid that is moved and continuous. The pump used in this analysis is the Centrifugal Pump contained in the building University 17 August 1945 Jakarta. The purpose of this analysis is to determine the needs of water in the building University 17 August 1945 Jakarta. Water requirement at University building August 17, 1945 Jakarta is calculated based on building floor and usage of every lecturer, staff, student, and rectorate in University 17 August 1945 Jakarta. The result of the analysis in obtaining the total clean water requirement at the building University 17 August 1945 Jakarta is 1.7910 Liter / day. The pump capacity is 0.06 m3 / s. The total pump head is 31.99 m. The rotation of the pump shaft is 1500 rpm. The pump power is 0.817 kW. Specific speed of 48.51 rpm. The results of the analysis can be stated that the Centrifugal Pump located in the building University 17 August 1945 Jakarta is feasible to use. Keywords : Water requirement, pump capacity, centrifugal pump
OPTIMASI DESAIN GATING SYSTEM PROSES DIE CASTING COLD CHAMBER MENURUNKAN CACAT PRODUK
Authors: Krisbianto Dedy , Rahmalina Dwi , Suwandi Agri
Published: May 2021

Untuk mendapatkan hasil akhir produk yang baik pada proses produksi die casting cold chamber dengan bahan material aluminium ADC12 yang sering dihadapi untuk proses akhir proses produksi die casting antara lain  porosity , sebelum pembuatan produk perlu dilakukan simulasi desain produk. Modifikasi  desain produk dapat memakai program Solidworks baik untuk desain simulasi 3D, manfaat simulasi desain produk untuk mengetahui secara dini hasil produk yang akan dibuat, yang perlu diperhatikan adalah desain gate runner pada die casting karena dapat mengetahui kecepatan aliran logam ke desain produk, untuk mengatuhui aliran cairan logam yang masuk ke dies, bisa melakukan simulasi dengan memakai program simulasi MAGMASOFT dapat mendeteksi cacat produk akhir tanpa melakukan try and error manual.Diperlukan  parameter yang dilakukan, slow shot, A 0.4, B 0.5 m/s, fast shot, A3.5, B 3.5 m/s, temperatur Molten, 670, B 670 ◦c, cycle time, A 55, B 55 detik, diameter biskuit, A85, B 90 mm. Dalam  desain modifikasi gating system A dari hasil X-Ray porosity pada produk mencapai 12.18% sedangkan pada desain modifikasi B menunjukan  penurunan cacat porosity mencapai 3.17% sehingga desain B dapat direkomendasikan untuk produk masal.
PENGARUH KECEPATAN PENGELASAN MIG PADA PIPA SC-80 TERHADAP STRUKTUR MIKRO DAN KEKERASAN DENGAN POSISI PENGELASAN 1G
Authors: Maret Rishi Nur , Syaripuddin Syaripuddin , Susetyo Ferry Budhi
Published: May 2021

AbstrakDilakukan penelitian dengan variasi kecepatan pengelasan menggunakan alat bantu pengelasan untuk memutar spesimen. Variasi kecepatan putar alat bantu pengelasan 1, 1,5 dan 2 rpm. Penelitian ini bertujuan untuk mengetahui karakteristik hasil pengelasan pipa SC-80 pada las MIG dengan variasi putaran alat bantu. Posisi pengelasan yang digunakan 1G, dengan arus yang diatur tetap 100A, kecepatan wire feeder yang digunakan 4m/menit dan kawat las ER 70S-6 berdiameter 0,8 mm. Spesimen hasil pengelasan di lakukan uji kekerasan dan pengamatan struktur mikro. Spesimen yang memiliki nilai kekerasan tertinggi adalah spesimen dengan kecepatan putar alat bantu pengelasan 2 rpm. Dengan nilai kekerasan daerah HAZ  sebesar 161,33 HV, dan Weld Metal 164,33 HV. Spesimen yang memiliki nilai kekerasan terendah adalah spesimen dengan kecepatan putar alat bantu pengelasan pipa 1 rpm. Dengan kekerasan daerah HAZ sebesar 148,67 HV, dan Weld Metal sebesar 146,33 HV. Kata kunci: SC-80, MIG, Kekerasan, Struktur Mikro AbstractConducted research with welding speed variations using welding aids to rotate the specimen. Variation of the rotating speed of welding aids 1, 1.5 and 2 rpm. This study aims to determine the characteristics of the SC-80 pipe welding results in MIG welding with a variety of tool rotation. The welding position used is 1G, with the current set to 100A, the wire feeder speed used is 4m / min and the ER 70S-6 welding wire is 0.8 mm in diameter. Welding specimens are tested hardness and microstructure observation. Specimens that have the highest hardness value are specimens with a rotating speed of welding aids of 2 rpm. With a HAZ area hardness value of 161.33 HV, and Weld Metal 164.33 HV. Specimens that have the lowest hardness value are specimens with a rotating speed of 1 rpm pipe welding aids. With HAZ area hardness of 148.67 HV, and Weld Metal of 146.33 HV. Keywords: SC-80 , MIG , hardness , microstructure
ANALISIS INTENSITAS DAN COVERAGE PROSES SHOT PEENING TERHADAP TEGANGAN SISA DAN KEKERASAN PADUAN AL 7075 T7351
Authors: Fikri Agus , Rifky Rifky , Djeli Mohammad Yusuf
Published: May 2021

AbstrakShot peening merupakan metode pengerjaan dingin dengan menumbukkan permukaan logam menggunakan partikel-partikel bulat yang berukuran kecil dan berkecepatan tinggi. Dengan proses shot peening dapat dikurangi inisiasi dan propagasi retak yang menyebabkan terjadinya kegagalan terhadap logam. Tujuan penelitian ini adalah untuk mengetahui pengaruh intensitas dan coverage shot peening terhadap tegangan sisa dan kekerasan pada permukaan Al 7075 T7351. Penelitian dilaksanakan dengan menembakkan permukaan logam dengan intensitas 0,0062 A dan 0,0091 A, serta coverage masing-masing 100% dan 200%, kemudian dilakukan pengujian kekerasan permukaan dan tegangan sisa. Hasil penelitian menunjukkan bahwa shot peening menyebabkan terjadinya perubahan tegangan sisa, yaitu 92,5021 MPa pada keadaan tanpa shot peening menjadi -111,8726 sampai -170,5675 MPa setelah dilakukan dishot peening. Selain itu kekerasan pada permukaan meningkat antara 23,4% sampai dengan 44,7%. Meningkatnya kekerasan menunjukkan bahwa terjadi pengerjaan dingin yang besar pada permukaan logam. Pengaruh pelapisan (coverage) 200% ternyata meningkatkan besarnya tegangan sisa dan kekerasan permukaan walaupun belum melampaui intensitas yang lebih besar. Kata kunci : shot peening, intensitas, coverage, kekerasan permukaan, tegangan sisa AbstractShot peening is a cold working method by striking metal surfaces using small, high-speed and round particles. Shot peening can reduce the initiation and propagation of cracks that cause metal failure. The purpose of this analysis is to determine the effect of shot peening intensity and coverage on residual stress and hardness on the surface of Al 7075 T7351. The research was carried out by firing metal surfaces with intensities of 0.0062 A and 0.0091 A, and coverage of 100% and 200%, respectively, then testing surface hardness and residual stress. The results showed that shot peening caused a residual stress change, which was 92.5021 MPa in the state without shot peening to -111.8726 to -170.5675 MPa after it was shot peening. In addition, surface hardness increased from 23.4% to 44.7%. Increased hardness indicates that there is large cold working on the metal surface. The effect of 200% coverage apparently increases the amount of residual stress and surface hardness even though it has not exceeded the greater intensity. Keywords: shot peening, intensity, coverage, surface hardness, residual stress
Analisa Rietvield Pada Material Barium Zirkonium Titanat (BZT)
Authors: Adnan Septian Rahmat
Published: May 2021

Pada penelitian ini dilakukan proses Rietvield refinement pada material Barium Zirkonium Titanat (BZT) yang ditumbuhkan pada substrat Silikon (Si) untuk mengetahui sruktur kristal BZT. Dari hasil kurva XRD yang dicocokan dengan data base COD didapatkan bidang kristal yang muncul adalah (110), (101), (111), dan (200) .Hasil refinement kurva XRD menunjukan menunjukan struktur kristal BZT adalah Tetragonal dengan parameter kisi c/a : 1,01. Kurva error antara kurva hasil eksperimen XRD dan hasil refinement menunjukan perbedaan yang sangat kecil serta hasil  chi – squared menunjukan tren linier. Dari hasil tersebut dapat dinyatakan bahwa lapisan BZT telat berhasil tumbuh pada substrat Silikon (Si)
Analisis Simulasi Kinematik Mesin Gergaji Dengan Metode Bilangan Kompleks
Authors: Arman Rizky , Mahyoedin Yovial , Mahyoedin Yovial
Published: May 2021

AbstrakAKinematika dan dinamika mesin melibatkan desain mesin atas dasar kebutuhan gerak mereka. Kombinasi bagian yang saling berhubungan memiliki gerakan yang pasti dan mampu melakukan pekerjaan yang berguna dapat disebut mesin. Mekanisme adalah komponen dari mesin yang terdiri dari dua atau lebih badan diatur sedemikian rupa sehingga gerakan satu memaksa gerakan yang lain. Desain kereta listrik otomotif (sejenis mesin) sangat  ditentukan oleh beberapa mekanisme, termasuk hubungan slider-engkol, cam dan follower hubungan, dan kereta gigi. Banyak mekanisme yang melibatkan gerak planar, gerak dalam satu pesawat atau di aset bidang sejajar. Kasus yang lebih umum, gerak spasial, berlaku untuk mekanisme di mana gerakan harus dijelaskan dalam tiga dimensi. Analisis kinematika dilakukan di bawah grafis pada umumnya, seperti metode poligon yang menangkap mekanisme dalam satu saat. Cara alternatif lain untuk masalah ini adalah melibatkan metode matematika. Solusi ini memberikan cara yang akurat dan tercepat karena didukung oleh teknologi komputer. Tujuan dari proyek ini adalah untuk menentukan rumus untuk posisi, kecepatan, dan pernyataan percepatan mesin gergaji dengan menggunakan Mathlab. Kata kunci: mekanisme, gerak (posisi, kecepatan dan percepatan), metode poligon AbstractKinematics and dynamics of machinery involve the design of machines on the basis of their motion requirements. A combination of interrelated parts having definite motions and capable of performing useful work may be called a machine. A mechanism is a component of a machine consisting of two or more bodies arranged so that the motion of one compels the motion of the others. The design of an automotive power train (a type of machine) is concerned with several mechanism, including slider-crank linkages, cam and follower linkages, and gear trains. Many mechanisms undergo planar motion, motion in a single plane or in asset of parallel planes. The more general case, spatial motion, applies to mechanism in which the motion must be described in three dimensions. Kinematics analysis is done under graphically in general, such as polygon method which capture the mechanism in one moment. Another way to alternate this problem is involve any mathematical method. This solution gave the accurate and fastest way because supported by computer technology. The aim of this project is to determine the formula for position, velocity, and acceleration statement of the sawing machine by using Mathlab.Keywords: mechanism, motion (position, velocity and acceleration), polygon method
Аnаlіsіs Іnstаlаsі Pіpа Dіstrіbսsі LPG Dі SPBЕ Pаtrа Trаdіng Plսmpаng
Authors: Hidayat M Fajri , Suganda Pandu Aditya
Published: May 2021

AbstrakSіstеm pеrpіpааn mеrսpаkаn sаlаh sаtս sіstеm yаng еfеktіf dаn еfіsіеn dі іndսstrі mіgаs bаіk dі sеktоr hսlս mаսpսn hіlіr sеbаgаі mеdіа prоsеs prоdսksі dаn pеndіstrіbսsіаn mіgаs, оlеh kаrеnа іtս pеrеncаnааn dаn mаіntеnаncе pаdа sіstеm pеrpіpааn dаn pеrаlаtаn pеndսkսng lаіnnyа hаrսs dіpеrhіtսngkаn dеngаn bаіk. Kаrеnа hаl dіаtаs pеnսlіs аkаn mеlаkսkаn аnаlіsіs Hеаd lоss dаn pеnеntսаn pоmpа pаdа іnstаlаsі pіpа dіstrіbսsі LPG dі SPBЕ Pаtrа Trаdіng Plսmpаng  yаng mеmіlіkі vаrіаsі dіmеnsі pіpа, vаrіаsі sаmbսngаn, sеrtа vаrіаsі аksеsоrіs. Dаrі hаsіl аnаlіsіs yаng dіlаkսkа,  nіlаі hеаdlоss pаdа bаgіаn sսctіоn sеbеsаr 0.755 m dаn Pаdа bаgіаn dіschаrgе sеbеsаr 22.27 m Sеhіnggа dаpаt dі аkսmսlаsіkаn tоtаl nіlаі hеаd lоss pаdа  іnstаlаsі pіpа dіstrіbսsі LPG sеbеsаr 23 m. Hеаd tоtаl pоmpа sеbеsаr 136 m. Sеhіnggа dаyа pоmpа yаng dіbսtսhkаn sеbеsаr 5.82 hp dаn dаpаt dіtеntսkаn jеnіs pоmpа yаng dіpаkаі yаіtս Cеntrіfսgаl pսmp Sіnglе-stаgе rаdіаl flоw kаpаsіtаs mеnеngаh (20-60 m^3/h) , dаn tеkаnаn mеnеngаh (5-50 〖kg/cm〗^3)  Pоsіsі pоrоs mеndаtаr, dеngаn pеnggеrаk mоtоr lіstrіk 16.3 hp, 3-Phаsе АC, 50 HZ, 380 v Еxplоіsоn Prооf. Kata kunci: Hеаd lоss, Hеаd tоtаl pоmpа, іnstаlаsі pіpа, LPG, Dаyа pоmpа AbstractThе pіpіng systеm іs оnе оf thе mоst еffеctіvе аnd еffіcіеnt systеms іn thе оіl аnd gаs іndսstry іn thе սpstrеаm аnd dоwnstrеаm sеctоrs аs а mеdіսm fоr thе prоdսctіоn аnd dіstrіbսtіоn оf оіl аnd gаs, thеrеfоrе plаnnіng аnd mаіntеnаncе оf thе pіpіng systеm аnd оthеr sսppоrtіng еqսіpmеnt mսst bе tаkеn іntо аccоսnt wеll. Bеcаսsе оf thе аbоvе, thе wrіtеr wіll аnаlyzе thе hеаd lоss аnd dеtеrmіnе thе pսmp іn thе LPG dіstrіbսtіоn pіpе іnstаllаtіоn аt SPBЕ Pаtrа Trаdіng Plսmpаng whіch hаs vаrіаtіоns іn pіpе dіmеnsіоns, vаrіаtіоns іn jоіnts, аnd vаrіаtіоns іn аccеssоrіеs. Frоm thе rеsսlts оf thе аnаlysіs cаrrіеd оսt, thе hеаd lоss vаlսе іn thе sսctіоn sеctіоn іs 0.755 m аnd аt thе dіschаrgе sеctіоn іs 22.27 m. Sо thаt thе tоtаl hеаd lоss vаlսе іn thе LPG dіstrіbսtіоn pіpе іnstаllаtіоn іs 23 m. Thе tоtаl pսmp hеаd іs 136 m. Sо thаt thе rеqսіrеd pսmp pоwеr іs 5.82 hp аnd іt cаn bе dеtеrmіnеd thе typе оf pսmp սsеd, nаmеly thе cеntrіfսgаl pսmp Sіnglе-stаgе rаdіаl flоw mеdіսm cаpаcіty (20-60 m^3/h), аnd mеdіսm prеssսrе (5-50〖 kg/cm〗^3) Hоrіzоntаl shаft pоsіtіоn, wіth 16.3 hp еlеctrіc mоtоr drіvе, 3-Phаsе АC, 50 HZ, 380 v Еxplоіsоn Prооf. Keywords: Hеаd lоss, hеаd pսmp, pіpе іnstаllаtіоn, LPG, pսmp pоwеr
Bacterial Composition of Biofilms of a Local Tigernut Drink Processing Unit in Yenagoa, Nigeria
Authors: O.P. Juliana , B.A. Adenike
Published: May 2021

Microorganisms grow and form biofilms on surfaces of equipment employed in food processing. These biofilms are considered as the major sources of contamination in the food industry. The study determined the bacterial load and composition on surfaces of equipment and utensils employed in tigernut drink production, from a vendor with a production unit located in an open market in Yenagoa, Nigeria. Swabs were taken from different sampling points made of varying materials—the grinding machine (metal), the collection bowls, water storage containers (thick plastic) and retail bottles (light plastic). These were analysed for total heterotrophic bacterial counts (THBC) and bacterial diversity using standard procedures. The THBC of water used in the drink production was also determined. The THBC of the sampling points ranged from log 3.28±0.06 cfu/cm2 to log 5.18±0.05 cfu/cm2, and log 5.13±0.07 cfu/ml for the water sample. The grinder and water recorded higher bacterial load with a statistically significant difference (P<0.05). The retail bottles had the least bacterial count. Shigella spp. were the most isolated (27.451%), then Salmonella spp. (21.568%) and E. coli (15.686%). Streptococcus spp., Staphylococcus spp. and Vibrio spp. were the least isolated (11.765% each). Shigella and Salmonella species occurred at all sampling points but not on the retail bottles. E. coli was present in the water collection bowls and retail bottles while Streptococcus, Staphylococcus and Vibrio were found only in the retail bottles. On diversity, four bacterial genera (39.216%) were isolated from the retail bottles, three (25.490%) from the water storage containers and two (17.647%) from the grinder and collection bowls. The microorganisms possibly had preference for attachment to the surfaces based on the material makeup and nutrient availability. Their occurrence and high numbers reflect the low level of hygiene employed prior to drink production. This could be of public health concern.
The Nature of Ghanaian Music and Dance Syllabus and the Challenges of Teaching its Contents in Tamale International School
Authors: O.A. Emmanuel , K.M. Isaac
Published: May 2021

This paper examined the nature of the Junior High School (JHS) music and dance syllabus in the context of growing cultural education and current socio-cultural transitions in Ghana. It also sought to highlight the challenges of teaching the syllabus in the schools. The design used was a case study while archival document analysis and interview incorporated the data collection instruments to collect the appropriate data to answer the research questions. The content of the syllabus was analyzed while two main participants of the study were also interviewed. The study reveals a mismatch in the relationship between the content of the music and dance taught in the classroom and what actually exists in the syllabus to be taught. It is recommended that music teachers properly align their instructional content to the syllabus since it contains enough African music content that can prepare the pupils to appreciate their musical culture.
The Predictive Influence of Peer Pressure and School Environment on Social Anxiety Disorder Among Adolescents
Authors: Kapoor Isha , Sharma Shaveta , Khosla Mohua
Published: May 2021

Social anxiety disorder is the most prevalent and chronic type of anxiety disorder worldwide. It affects the educational and social affairs of adolescents. Adolescents spend a lot of time in school, necessitating a considerable amount of social interaction with peer group and teachers. The present study attempts to find the predictive influence of peer pressure and school environment on social anxiety disorder among adolescents. Data was collected from 500 adolescents studying in government and self-financed schools in Punjab. The sample was drawn from ten randomly selected districts of Punjab state. The data was collected using the social anxiety disorder scale by Nagpal (2018), the Peer pressure scale by Singh and Saini (2010) and the School environment scale by Misra (2012). The findings reveal that social anxiety disorder is negatively related to peer pressure. A significant negative relationship exists between social anxiety disorder and the school environment. It is apparent from the regression model summary that the conjoint effect of peer pressure and school environment on social anxiety disorder among adolescents is higher than their individual effects. It implies that peer pressure and school environment would contribute towards predicting social anxiety disorder both independently and conjointly.
Depression Among Adolescents in Relation to Spiritual Intelligence and Mindfulness
Authors: Varghese P. J.  , Sharma Shaveta Sharma
Published: May 2021

The present study aims to investigate depression among adolescents with spiritual intelligence and mindfulness. The study was conducted on 500 adolescents studying in government and private schools/colleges in Karnataka. The sample of 500 adolescents was drawn from five randomly selected districts in Karnataka. The Spiritual Intelligence Scale (SIS-MK) by Misra (2014) Misra (2014), the Mindfulness Attention Awareness Scale (MAAS) by Brown and Rayan (2003) and the Mental Depression Scale by Dubey (2006) were used for data collection. The results reveal that there is a significant and negative relationship between depression and spiritual intelligence. A significant and negative relationship also exists between depression and mindfulness. The results further indicate that the conjoint effect of spiritual intelligence and mindfulness on depression among adolescents is higher than their individual effects. Spiritual intelligence and mindfulness would contribute towards the prediction of depression of adolescents both independently and conjointly.
Home Environment of Adolescents Studying in Eighth Class in Schools of Jammu District
Authors: Rana Nishta , Padhiar Kimi
Published: May 2021

The present study attempts to examine the home environment of adolescents studying in eighth class in relation to some selected variables. The study is quantitative in nature. Sample of the study consists of 200 adolescents of eighth class (100 males and 100 females) randomly selected from 5 government and 5 private schools of Jammu. Home Environment Inventory (HEI) developed by Misra (1989) has been used for collection of data. Results show that adolescents from rural residential background have perceived their home environment as better in comparison to adolescents from urban residential background. However, there were no significant gender and type of school differences in the perceived home environment of adolescents studying in eighth class. The combined effect of gender and type of school on perceived home environment was found to be significant in favour of female students studying in government schools in comparison to private schools. Significant combined effect was obtained among gender, residential background and school type on perceived home environment of adolescents.
Constipación crónica. Conceptos actuales desde la fisiopatología hasta el tratamiento
Authors: García-Zermeño Karla Rocío
Published: May 2021

Chronic constipation is one of the most frequent gastrointestinal pathologies worldwide, and it negatively impacts the quality of life of patients. The objective of this narrative review is to present the most innovative and relevant information in relation to chronic constipation, from its pathophysiology to treatment. It is recognized that there are at least three subtypes of primary chronic constipation that are functional, that associated with irritable bowel and that related to evacuation disorders. It is considered that there are multiple causes of secondary chronic constipation, especially drugs and the entity called opioid-induced constipation is specifically detailed. The pathophysiological mechanisms of functional chronic constipation are multiple (they include motor and sensory alterations, dysbiosis, and structural and functional alterations of the pelvic floor) and frequently overlap. No test provides a complete description of defecation; therefore in general, a combination of these is generally used to assess motor and sensory structure and function. Advanced diagnostic studies of the function of the colon, rectum, and anus are recommended in patients with chronic constipation in whom the first-line treatment have failed. Regarding treatment, the usefulness of hygienic-dietary measures, exercise, fiber, the laxatives, the new drugs (such as prucalopride, lubiprostone, linaclotide, plecanatide), biofeedback therapy, probiotics, and other therapies fecal microbiota transplantation and surgery.
O uso de recursos tecnológicos no ensino de tabela periódica: relato de uma experiência
Authors: Castro de Oliveira Ricardo
Published: May 2021

Os recursos tecnológicos vêm ganhando cada vez mais destaque no Ensino de Química. Este trabalho apresenta um relato de experiência, envolvendo 24 licenciandos em Química do Instituto Federal de Educação, Ciência e Tecnologia de São Paulo, Câmpus Catanduva, durante a disciplina de Tecnologia da Informação e Comunicação no Ensino de Química. Ao longo da disciplina, os estudantes construíram uma tabela periódica em QR Code e a disponibilizaram para todos os estudantes do câmpus. Foi possível constatar grande engajamento dos licenciandos na construção da tabela periódica, desde o processo de planejamento até a sua montagem. Esse recurso foi amplamente utilizado pelos estudantes da Instituição, que se deslumbraram com a possibilidade de acessar as principais informações dos elementos químicos a partir do seu celular ou tablet. Espera-se que este relato possa incentivar e promover reflexões nos licenciandos, a respeito da importância dos recursos tecnológicos na aprendizagem de Química.
Critique of the International Legal Regime Applicable to Terrorism
Authors: Orina Nabil Mokaya
Published: May 2021

Terrorism is a global phenomenon that permeates state borders and predominantly causes immeasurable suffering to civilians. The need for international cooperation and concerted efforts in combating terrorism cannot be gainsaid. Already, sectoral instruments have been passed to regulate certain aspects of terrorism. However, without a single terrorism specific instrument, acts of terrorism generally classified will fall under spheres of international law which include; public international law, international criminal law, international humanitarian law, human rights and refugee law. This paper makes a critical analysis of these spheres of international law and how they apply to states’ counter-terrorism efforts.
Regulating Terrorism Before the Act of Terror: A comparative study
Authors: Fedynyshyn Frederick B.
Published: May 2021

In light of the growing risks that terrorism presents to civilised society, Western governments have adopted a broad range of laws and administrative regulations designed to thwart terrorists before they can commit acts of terror. Beyond mere conspiracy or attempt, these laws have sought to proscribe activity that exists as a stand-alone offence but that acts as a proxy for the sorts of offences that constitute true terror activity. This article serves to examine these various approaches. It groups these approaches into four categories: prohibitions on membership in terror organisations; intangible support to terror organisations; restrictions on travel to areas that have terror groups operating openly; and money laundering and other financial crimes tied to the financing of terror organisations. It then identifies a single example within each group to use as a case study to explore the contours of the specific approach, while tying the example to larger trends within Western countries’ legal systems. Finally, this article considers the implications for countries considering adopting one or more of these approaches, including the ways that multiple approaches can work in tandem. The article does not make specific recommendations, but rather recognises that each country’s government must consider the benefits and costs of adopting these approaches carefully and with an eye to both its security and its society.
Islam and Terrorism: The Blurred Boundary Between the Cosmic and this World
Authors: Ochieng Ahaya L.
Published: May 2021

Today the barbarity of crimes in the name of religion is all the more disturbing particularly when one considers the righteous religious language in which such heinous acts are cloaked. Violence perpetrated in the name of God continues to engage the world at alarming levels. It is in this regard that this study examines the general relationship between violence and religion in the specific context of Islam from the point of view of the cosmic war theory as advanced by Mark Juergensmeyer. The study observes that violent activities related to Islam are a result of the blurring of boundaries between the symbolic cosmic world of religion and this world, as a result of which the symbolic violence of religion translates into real violence. This translation is occasioned by violent groups in Islam legitimising their violence on the inherent symbolic violence of religions as they respond to ‘unfavourable’ local and global structural conditions.
The ‘Great Escape’: In Pursuit of President Al Bashir in South Africa
Authors: Asin Jerusha
Published: May 2021

In 2008 the first Chief Prosecutor of the International Criminal Court (‘the Court’ or ‘ICC’) Luis Moreno Ocampo, had shifted his prosecutorial strategy with regard to the situation in Sudan by deciding to pursue the serving President of Sudan, Omar al Bashir, whereas before, his strategy had been to request the Pre-Trial Chamber to issue summons for persons deemed to be mid-level individuals in the Khartoum government. Acting on that referral, the Prosecutor initiated investigations into the situation in Darfur beginning June 2005. On 14 July 2008, the Prosecutor filed an application requesting the Pre-Trial Chamber to issue a warrant of arrest against President Bashir, which was granted on 4 March 2009. Subsequently, warrants of arrest were issued for Al Bashir on 4 March 2009 and on 12 July 2010, with the second warrant being issued to reflect the inclusion of the charge of genocide in the indictment. This article examines how this "Great Escape", on the light of the last events.
Late Follow-Up of Rastelli Operation After One-Stage Repair with Right Ventricular Remodeling
Authors: Maluf Miguel
Published: May 2021

We report long-term outcomes after one-stage, surgical repair, at an 11-year-old, girl with pulmonary atresia with a ventricular septal defect and anomalous origin of the left coronary artery from the right coronary artery, crossing the right ventricular outflow tract. The operation was carried out with the remodeling of the right ventricle, using a swine valved conduit prosthesis (22mm). Twenty-nine years later, the patient is in excellent clinical condition, CF I (NYHA), with normal peripheral oxygen saturation. Recent invasive and not invasive imaging show: the absence of intracardiac shunt, despite presenting prosthesis calcification and signs of mild double lesion of the prosthetic valve. The pulmonary flow is directed uniformly for both lungs. Patients undergoing the implantation of valved conduits during childhood, present mismatch, after a few years of follow-up, and are required to undergo frequent reoperations. In this patient, the indication of a Blalock-Taussig shunt, during childhood, allowed to postpone the surgery and implant a valved conduit with a larger diameter, achieving a long follow-up with a single prosthetic implant.
Advance Demand Information as a Tool for Value Chain Planning of Biofortified Foods in Brazil
Authors: Voese Simone Bernardes , Dos Santos Bortolocci Espejo Marcia Maria , Planells Mariana
Published: May 2021

Biofortified foods represent an alternative to minimize extreme and “hidden” hunger in people. Aiming to look at this sector as a business, this study seeks to identify potential demand in the consumer market regarding fortified foods in Brazil. In order to do these, multiple sources of data collection were adopted to access different markets for these products. In the first part of the research a survey of Brazilian government programs was carried out, which could encourage the demand of biofortified foods. In addition a conversation was undertaken with stakeholders seeking to identify the perception of agents who take part in the value chain, which included the project developer in Brazil (Embrapa) to the food industry. Additionally a quantitative research was carried out using Mann-Witney and Chi-square tests, and also Multiple Correspondence Analysis, aiming to evaluate the perception of final consumers regarding biofortified foods. Looking at the results a potential demand was identified for biofortified foods, through government programs as well as via the food industry, despite needing larger promotion amongst the Brazilian population, as the sample showed a considerable lack of awareness. In relation to biofortified foods each market showed different interests, such as Cascavel, Parana, which showed greater interst in School Meals with corn and cassava. While in the food industry the interest was more considerable for sweet potato, and amongst the final consumers there was a bigger interest in corn and beans. A potential demand in several markets for all biofortified foods was also shown.
Breathing Underwater
Authors: Green Chris E. W.
Published: May 2021

The first part of this article explores traditional Augustinian theologies of evil, particularly as received and rearticulated by John Wesley. The second, longer part offers a series of constructive theses challenging certain aspects of the Augustinian and Wesleyan position or positions, arguing that Christians should not say that God allows evil, at least not in the usual sense, or that God uses evil for good. Instead, Christians should insist on the hope of a final transformation in which God sets all things right, not merely by rewarding those who have suffered evil but by rectifying the wrongs. In the meantime, believers are called to join God in resisting evil until the promised end, especially when it seems that their efforts are in vain.
Producción de queso ricota a través de un prototipo de proceso continuo
Authors: Salvador Bonilla Felipe Santiago , Sorto Salmerón José
Published: May 2021

En esta investigación se diseñó y creó un prototipo de proceso continuo para obtener queso ricota a partir del lactosuero. La metodología comprendió, el diseño del prototipo de temperaturas óptimas; construyendo uno a escala de laboratorio y después se procedió a escala industrial, dando paso a las respectivas pruebas de funcionalidad; para estimar el valor nutricional inocuidad del producto y propiedades organolépticas, se realizaron pruebas fisicoquímicas, microbiológicos y sensoriales; además fueron comparados con los resultados de muestras de queso ricota preparado de forma artesanal e industrial. Los resultados evidenciaron un rendimiento de 5.6 kilogramos por 100 litros de lactosuero, el queso ricota preparado con el prototipo, presento valores de proteínas de 10.8 %, de grasas del 0.18% y una muestra de queso ricota obtenida del mercado local presento un valor de proteínas 1.90%, de grasas 21.61%, mientras que una muestra de ricota de marca comercial presento proteínas de 8.48% y grasas 4.12%. Respecto al análisis microbiológico, los resultados están dentro de los paramentos normales, en todas las muestras analizadas. En el análisis sensorial se evaluaron atributos como: apariencia, textura, sabor, color y aroma, encontrando diferencias significativas en aroma, resultando mejor evaluada la muestra de queso ricota prepara de forma artesanal, en segundo lugar, la muestra obtenido con el prototipo y en la misma categoría la muestra obtenida de marca comercial. Se logró un 64% de eficiencia en tiempo para preparar queso ricota con el prototipo de temperaturas óptimas, y una capacidad de procesamiento de 200 litros de lactosuero por hora
Criterios de mancomunidad hacia el desarrollo sustentable de la arquitectura vernácula para viviendas dignas con enfoque y adaptación al cambio climático.
Authors: Miranda Alvarenga Marvin Saúl
Published: May 2021

La presente investigación determina el impacto del modelo habitacional de 22 comunidades en dos grupos locales del Bajo Lempa: Los Calix y Amando López. La investigación tiene en cuenta enfoques de levantamiento de información de forma participativa con equidad de género, fomentados en talleres de Educación Popular, en las comunidades intervenidas por los proyectos de infraestructura básica comunitaria en dos secciones específicas: La vivienda como objeto de estudio social, y la vivienda como objeto de estudio arquitectónico. En estas secciones se evalúan indicadores de impactos: tecnológicos, institucionales, económicos, políticos, socioculturales y ambientales de las comunidades en gestión. La investigación hace hincapié en la búsqueda de un modelo tipológico de vivienda digna con enfoque ambiental y adaptación al cambio climático.
Clinical outcome in patients with hand lesions associated with complex regional pain syndrome after arthroscopic rotator cuff repair
Authors: Imai Takaki , Gotoh Masafumi , Fukuda Keiji , Ogino Misa , Nakamura Hidehiro , Ohzono Hiroki , Shiba Naoto , Okawa Takahiro
Published: May 2021

Background: Complex regional pain syndrome (CRPS)-related hand lesions are one of the complications following arthroscopic rotator cuff repair (ARCR). This study aimed to investigate the clinical outcomes of patients with CRPS-related hand lesions following ARCR.Methods: Altogether, 103 patients with ARCR were included in this study (mean age, 63.6±8.2 years; 66 males and 37 females; follow-up period, preoperative to 12 months postoperative). Clinical assessment included the Japanese Orthopaedic Association (JOA) score, University of California, Los Angeles (UCLA) score, Constant score, 36-item short form health survey (SF-36) score, and Quick Disabilities of the Arm, Shoulder, and Hand (QuickDASH) score from preoperative to 12 months postoperatively. The patients were either assigned to the CRPS group or non-CRPS group depending on CRPS diagnosis until the final follow-up, and clinical outcomes were then compared between the groups.Results: Of 103 patients, 20 (19.4%) had CRPS-related hand lesions that developed entirely within 2 months postoperatively. Both groups showed significant improvement in JOA, UCLA, and Constant scores preoperatively to 12 months postoperatively (P<0.0001). Comparisons between the two groups were not significantly different, except for SF-36 “general health perception” (P<0.05) at 12 months postoperatively. At final follow-up, three patients had residual CRPS-related hand lesions with limited range of motion and finger edema.Conclusions: CRPS-related hand lesions developed in 19.4% of patients following ARCR. Shoulder or upper-limb function improved in most cases at 12 months, with satisfactory SF-36 patient-based evaluation results. Patients with residual CRPS-related hand lesions at the last follow-up require long-term follow-up.
Clinical study on treatment of TOSSY type III acromioclavicular joint dislocation with clavicular hook plate combined with coracoclavicular ligament repair
Authors: Sun Fulu , Wang Shunchao , Zhang Fei
Published: May 2021

Objective: To explore the treatment of TOSSY type III acromioclavicular joint dislocation with clavicular hook plate combined with coracoclavicular ligament repair and its clinical effect.Methods: 80 patients with TOSSY type III acromioclavicular joint dislocation who were admitted to our hospital from January 2014 to January 2019 were selected. They were randomly divided into the control group (n = 39, treated with clavicular hook plate) and the observation group (n = 41, treated with clavicular hook plate combined with coracoclavicular ligament repair) by the random number table method. The clinical efficacy in 12 months after operation, related clinical indicators, 12-month postoperative recovery and postoperative complications were compared between the two groups.Results: The excellent and good rate was 92.68% (38/41) in 12 months after operation in the observation group, which was higher than that (76.92%, 30/39) in the control group (p < .05). There were no significant differences in the duration of surgery, intraoperative blood loss and HLOS between the observation group and the control group (p > .05). In 12 months after operation, abduction activity and forward flexion activity of the observation group were higher than those of the control group, and visual analogue score (VAS) was lower than that of the control group (p < .05). The incidence of complications in the observation group was slightly lower than that in the control group, but there was no statistically significant difference between the two groups (p > .05).Conclusions: For TOSSY type III acromioclavicular joint dislocation, clavicular hook plate combined with coracoclavicular ligament repair has a good clinical efficacy. It can improve shoulder joint function, alleviate shoulder pain and have fewer complications. It can provide a reference for clinical treatment of this type of acromioclavicular joint dislocation.
Examining English Language Learning Apps from A Second Language Acquisition Perspective
Authors: Almousawi Sayed Ahmad
Published: May 2021

This study set out to explore dedicated language learning apps pedagogically while focusing mainly on aspects of second language acquisition. A total of 20 English language learning apps were collected for analysis. The study took one model of analysing course book materials and another, computer-assisted language learning model and combined them into one analytical framework with bespoke criteria, ensuring the analysis was most suitable for our case. The analytical framework which was developed reached a number of conclusions about dedicated language learning apps (DLLAs). The findings revealed that DLLAs tend to provide mechanical forms-focused practice without facilitating collaborative learning nor focusing on developing users’ communicative competence, which suggests that DLLAs reflect a behaviouristic view of language learning. The conclusion offers some suggestions to improve DLLAs and proposes that, for the time being, educators should look beyond DLLAs and instead investigate how can apps that are not designed for language learning (generic apps) be used in the manner of DLLAs to avoid the issues that this paper identifies with them.
Multifocal Xanthoma of Bone
Authors: Schryver Eric M. , McCandless Martin G. , Al Hmada Youssef , Barr Jennifer S.
Published: May 2021

We report a case of a 40-year-old woman with hyperlipidemia and associated multifocal xanthoma of bone requiring prophylactic fixation of her bilateral femurs. Although xanthomas of bone are themselves a benign process, their presence may indicate that the patient has poorly controlled lipids and is at an increased risk of cardiovascular disease. Lytic lesions may require prophylactic fixation to prevent pathologic fracture.
ON INTERNAL GRAVITY WAVES
Authors: SUN TIEN-YU , CHEN KAI-HUI
Published: May 2021

We are concerned with the steady wave motions in a 2-fluid system with constant densities. This is a free boundary problem in which the lighter fluid is bounded above by a free surface and is separated from the heavier one down below by an interface. By using a contractive mapping principle type argument. a constructive proof to the existence of some of these exact periodic internal gravity waves is proveded.
AN INEQUALITY OF GRUSS' TYPE FOR RIEMANN-STIELTJES INTEGRAL AND APPLICATIONS FOR SPECIAL MEANS
Authors: DRAGOMIR S. S. , FEDOTOV I.
Published: May 2021

In this paper we derive a new inequality ofGruss' type for Riemann-Stieltjes integral and apply it for special means (logarithmic mean, identric mean, etc·. ·).
ON THEOREMS CONNECTING THE LAPLACE TRANSFORM AND A GENERALIZED FRACTIONAL INTEGRAL OPERATOR
Authors: GUPTA K. C. , GOYAL S. P. , SALIM TARIQ O.
Published: May 2021

The aim of the present paper is to establish two theorems connecting the Laplace transform and a certain class of generalized fractional integral operators involving a generalized polynom叫 set. These theorems provide .usful extension and unification of a number of (known or new) results for vaious classes of fractional integral operators. Several interesting applications of the main theorems are also mentioned briefly.
PARTIAL SUMS OF A CLASS OF UNIVALENT FUNCTIONS
Authors: SILVERMAN HERB
Published: May 2021

We investigate the sequence of partial sums $f_n$ of univalent functions $f$ for which Re$f' > 0$ in the unit disk. Radii of univalence for $f_n$ are tracked as a function of $n$.
MAJORIZING SEQUENCES FOR NEWTON'S METHOD
Authors: GUTIERREZ J. M. , HERNANDEZ M. A.
Published: May 2021

Majorizing sequences for Newton's method are analysed from a new standpoint. As a consequence, we give convergence results under assumptions different from the classical Kantorovich conditions.
ELEMENTARY OSCILLATION CRITERIA FOR A THREE TERM RECURRENCE RELATION WITH OSCILLATORY COEFFICIENT SEQUENCE
Authors: ZHANG GUANG , CHENG SUI-SUN
Published: May 2021

Qualitative properties of recurrence relations with coefficients taking on both positive and negative values are difficult to obtain since mathematical tools are scarce. In this note we start from scratch and obtain a number of oscillation criteria for one such relation : $x_{n+1}-x_n+p_nx_{n-r}\le 0$.
Recommendations on sports cardiology and exercise in patients with cardiac arrhythmias, channelopathies, CARDIOMOPATHIA AND implanted dEVICES ACCORDING TO THE LATEST GUIDELINES OF European Society of Cardiology – part 1
Authors: Bajer Magdalena , Kotalczyk Agnieszka , Mazurek Michał , Jędrzejczyk-Patej Ewa
Published: May 2021

Competitive athletes should be screened for cardiovascular diseases associated with an increased risk of sudden cardiac death. Patients with arrhythmias, channelopathies, cardiomyopathies and cardiac implantable electronic devices should be assessed, and the level of acceptable physical activity should be established. It is crucial to personalize the guidelines and involve the patients in shared decision making. The following article provides an overview of exercise recommendations for patients with arrhythmias and cardiac implantable electronic devices on the basis of the 2020 ESC Guidelines on Sports Cardiology and Exercise. It was divided into two parts.
Effective extension of the pacemaker to the CRT-P with simultaneous percutaneous recanalization of the obstructed left brachiocephalic vein
Authors: Rabiej-Krzyś Paulina , Szczasny Marcin , Chromiński Tomasz , Stachyra Milena , Błaszczak Piotr
Published: May 2021

We present a case of a man with a previously implanted DDD pacemaker, NYHA functional class III heart failure and asymptomatic left brachiocephalic vein obstruction.
The DDD pacemaker was extended to the system of resychronization CRT-P despite obstruction of the left brachiocephalic vein.