bluuebunny/crossref_metadata_2025 huggingface dataset:
Design of Symmetric Magnetic Lenses with Optimum Operational Conditions
Authors:   Department of Physics, College of Science, Al-Nahrain University, Jadriayh, P.O.Box 64055, Baghdad, Iraq, Faiz Abd Alghane Basma , K. Ahmad Ahmad ,   Department of Physics, College of Science, Al-Nahrain University, Jadriayh, P.O .Box 64055, Baghdad, Iraq
Published: March 2021

In the present paper, the geometrical and optical object properties of symmetrical magnetic lens are designed and analyzed using the electron optical design (EOD) program. The effect of the axial aperture diameter (D), the air gap between the poles (s), the thickness of the poles (t), the excitation parameter NI of the lens are all studied for the best optical properties like the object focal length fo, the spherical and chromatic aberrations coefficients (Cs and Cc respectively). It was found that the optical properties of the object significantly improved with a decrease in the axial aperture diameter and width of the air gap of this lens. Upon our study, it was found that the best properties are achieved when the air gap width (S2 mm), and the axial hole diameter (D=6 mm). The effect of the electrode face thickness on the magnetic properties of the proposed magnetic lens is studied, it was found that the best magnetic properties and the highest value of magnetic flux and the lowest value of the axial magnetic field strength bandwidth were at electrode face thickness equal to (3 and 4 mm).Therefore, the best magnetic lens in our design with the best optical properties was S=2mm, D=6mm and t=3mm.
Semi-Analytic Technique for Solving Fractional Partial Differential Equations with Conformable Derivatives
Authors:   Department of Mathematics, College of Science, Al-Nahrain University, Baghdad, Iraq, I. Ibrahim Noor , H. Mohammed Osama ,   Department of Mathematics, College of Science, Al-Nahrain University, Baghdad, Iraq
Published: March 2021

In this work, we present a semi-analytical technique to find an approximate result of the conformable fractional partial differential equations (CFPDEs). The fractional order derivative will be in the conformable (CFD) sense. This definition is effective and simple in the solution of the fractional differential equations that have intricate solution with classical fractional derivative definition like Riemann-Liouville and Caputo. Furthermore, the result obtained by the proposed technique is like those in previous studies that used other types of approximate methods like (Homotopy analysis method) but it has the advantage of being simpler than the rest of these methods. In addition, results demonstrate obtained the Precision and effectiveness of the suggested technique.
Forged Copy-Move Recognition Using Convolutional Neural Network
Authors:   Department of Computers Science, Collage of Science, Al-Nahrain University, Baghdad, Iraq, Fadhel Homady Sewan Ayat , Sahib Mahdi Altaei Mohammed ,   Department of Computers Science, Collage of Science, Al-Nahrain University, Baghdad, Iraq
Published: March 2021

Due to the extreme robust image editing techniques, digital images are subject to multiple manipulations and decreased costs for digital camera and smart phones. Therefore, image credibility is becoming questionable, specifically when images have strong value, such as news report and insurance claims in a crime court. Therefore, image forensic methods test the integrity of the images by applying various highly technical methods set out in the literature. The present work deals with one important research module is the recognition of forged part that applied on copy move forgery images. Two datasets MICC-F2000 and CoMoFoD are used, these datasets are usually adopted in the field of interest. The module concerned with recognizing which is the source image portion and which is the target one of that already detected. Thus, the two detected tampered parts of the image are recognized the original one from them, the other is then referred as forged or tampered part. The proposed module used the buster net of three neural networks that basically adopted the principle of training by using Convolution Neural Network (CNN) to extract the most important features in the images. The first and second networks are parallel working to detect and identify areas that have been tampered with, and then display them through two masks. While the last network classifier takes a copy of these two catchers to decide which is the source image portion from the two detected ones. The achieved recognition results were about F-score 98.98% even if the forged area is rotated or scaled or both of them. Also, the recognition results of the forged image part was 98% when using images do not contributed in the training phase, which refers to that the proposed module is more confident and reliable.
Beyond the Saturation Point
Authors: Annette Arlander
Published: March 2021

Why does one continue beyond the saturation point? This bilingual exposition discusses repetition and difference while performing with trees, and uses as an example the video Year of the Pig with a Tatarian Maple performed in Nobelparken in Stockholm during 2019 as part of the project Performing with Plants at Stockholm University of the Arts. The exposition consists of a brief version of the video, documentation of the working process, and an essay with references. The aim is to show how repetition produces small (and big) differences and therefore makes a difference. And how it in this case led to a new project, Meetings with Remarkable and Unremarkable Trees.
Minuting. Rethinking the Ordinary Through the Ritual of Transversal Listening
Authors: Jacek Smolicki
Published: March 2021

This exploratory essay introduces selected sound recordings along with notes and observations from Minuting – a practice of sonic journaling I have performed daily since July 2010 in numerous locations and settings. I weave these observations together in a way that resonates closely with the idea of repetition, in multiple forms: protest, automation, cycle, and ritual, as well as the repetition inherent to my acts of recording. While introducing sounds from the archive of Minuting, I reflect on how this constrained and systematically enacted form of listening, recording, and re-listening leads to a transversal type of sonic reflexivity. It is a form of alertness to sound that stretches beyond the immediate resonance of the 'now' – towards spatially and temporarily distant, yet to some extent intertwined, objects, subjects, events, and environments. The text evolves across three interrelated layers: annotated recordings from the project's archive, a set of thoughts and associations triggered by re-listening to the material, and a discursive analysis that opens up the project to a dialogue with other thematically resonant debates and practices. Drawing on perspectives from media studies, the philosophy of technology, sound studies and durational art, I discuss Minuting as an art work, a creative constraint and a transversal listening practice. Lastly, I propose it as an existential media technique for composing critical and reflective positions towards one's surrounding space, experience of time, and use of sound technologies.
Haunted houses
Authors: Emelie Carlén
Published: March 2021

This exposition uncovers the thought process behind and around the artworks Haunted Houses and Cold Readings. I focus my research on the two modernist buildings of E1027 and Villa Müller and the architects behind them. Through the production of these works I have been concerned with how narratives about these houses have been constructed and re-told – and how these narratives have changed as they have been 'rehearsed'. I have applied the methodology of rehearsal to my process in order to outline how historical writings and archival research can be used with the aim of finding alternative outcomes to what has already been written and said.
An in-situ MRI method for quantifying temperature change of hydrate growth in a porous medium
Authors: Zhang Lunxiang , Sun Mingrui , Yang Lei , Zhang Xiaotong , Zhao Jiafei , Song Yongchen
Published: March 2021

The intricacy of the thermo-hydro-chemically coupled process of hydrate
phase transition requires real-time in-situ observations, therefore,
thermometry maps are of particular value to reveal the heat transfer
process during crystal growth and dissociation. By using the temperature
dependence of water proton chemical shift, the temporally- and
spatially-resolved thermometry of tetrahydrofuran hydrate growths is
presented in this study. Images of temperature changes were
synchronously obtained by a 9.4 T 1H Magnetic Resonance Imaging (MRI)
system, in order to predict the saturation of aqueous solution, solid
hydrate phases, and the positive temperature anomaly of exothermic
reaction. Variations of MRI signal decrease and histories of temperature
rise differ significantly in space and time, which have a great use for
analyzing the physical micro-mechanism and the heat transfer process of
hydrate growth. The extension of these predicted results could have
important implications for optimizing the phase transition process of
gas hydrates.
Asymptotic synchronization of fractional order non-identical complex dynamical networks with Parameter Uncertainties
Authors: Aadhithiyan S , Raja R. , Kou Bo , Selvam G , Niezabitowski Michal , Lim C.P , Cao Jinde
Published: March 2021

This article specically deals with the asymptotic synchronization of
non-identical complex dynamic fractional order networks with
uncertainty. Initially, by using the Riemann-Liouville derivative, we
developed a model for the general non-identical complex network, and
based on the properties of fractional order calculus and the direct
Lyapunov method in fractional order, we proposed that drive and response
system if nonidentical complex networks ensuring asymp-totic
synchronization by using neoteric control. Second, taking into account
the uncertainties of non-identical complex networks in state matrices
and evaluating theirrequirements forasymptotic synchronization. In
addition, to explain the eectiveness of the proposed approach, two
numerical simulations are given.
ACE I/D AND ACE2 RECEPTOR GENE (RS2106809, RS2285666) POLYMORPHISMS IS NOT RELATED TO THE CLINICAL COURSE OF COVID-19; A CASE STUDY
Authors: Çelik Sevim Karakaş , Genç Güneş Çakmak , Piskin Nihal , Acikgoz Bilgehan , Altınsoy Bülent , İşsiz Başak Kurucu , Dursun Ahmet
Published: March 2021

Objectives: Coronavirus disease 2019 (COVID-19) is an infectious
disease, that’s the reason for the currently ongoing pandemic, caused by
severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).
Angiotensin-converting enzyme (ACE2) has been recognized as the specific
receptor of the SARS-CoV-2 virus. Although the possible effect of ACE2
gene polymorphism remains unknown, human ACE2 receptor expression
influences SARS-CoV-2 susceptibility and COVID-19 disease outcome. In
this study, we aimed to investigate the relationship between ACE gene
I/D polymorphism, ACE2 receptor gene polymorphism, and Covid-19
severity. Methods: ACE gene I/D polymorphism and ACE2 receptor gene
rs2106809 and rs2285666 polymorphisms were determined using PCR and
PCR-RFLP methods, respectively in 155 Covid19 patients who were divided
into 3 groups (mild, moderate, and severe) according to clinical
symptoms. Results: However, the distribution of genotype and allele
frequencies of ACE gene I/D, ACE2 receptor gene rs2106809, and rs2285666
polymorphisms was not statistically significant in all groups.
Conclusions: In conclusion, in the study population, ACE gene I/D, ACE2
receptor gene rs2106809, and rs2285666 polymorphisms were not associated
with the severity of Covid-19 infection. Although, ACE2 receptor gene
expression may affect the susceptibility to Covid-19, there is no
existing evidence that the ACE or ACE2 gene polymorphisms are directly
associated with Covid-19 severity. Interindividual differences in
covid-19 severity might be related to epigenetic mechanisms of ACE2
receptor gene expression or variations in other genes suggested to have
critical role in COVID-19 pathogenesis such as proinflammatory
cytokines, coagulation indicators. Keywords: COVID-19 , ACE , ACE2,
rs2106809, rs2285666
Personalised External Aortic Root Support -- how to implant it?
Authors: Nemec Petr , Kolarik Miroslav , Fila Petr
Published: March 2021

Personalized External Aortic Root support (PEARS) is an evolving method
of treatment for patients with dilated aortic root or ascending aorta.
The treatment is adopted in still more centres. For the sake of the
safety of the procedure a standardized surgical technique is necessary.
The authors describe surgical technique of the implantation that is
derived from their extensive experience.
Climate drivers of adult insect activity are conditioned by life history traits
Authors: Belitz Michael , Barve Vijay , Doby Joshua , Hantak Maggie , Larsen Elise , Li Daijiang , Oswald Jessica , Sewnath Neeka , Walters Mitchell , Barve Narayani , Earl Kamala , Gardner Nicholas , Guralnick Robert , Stucky Brian
Published: March 2021

Insect phenological lability is key for determining which species will
adapt under environmental change. However, little is known about when
adult insect activity terminates, and overall activity duration. We used
community-science and museum specimen data to investigate the effects of
climate and urbanization on timing of adult insect activity for 101
species varying in life history traits. We found detritivores and
species with aquatic larval stages extend activity periods most rapidly
in response to increasing regional temperature. Conversely, species with
subterranean larval stages have relatively constant durations regardless
of regional temperature. Multivoltine and univoltine species both
extended their period of adult activity similarly in warmer conditions.
Longer adult durations may represent a general response to warming, but
voltinism data in subtropical environments is likely underreported. This
effort provides a framework to address drivers of adult insect phenology
at continental scales, and a basis for predicting species response to
environmental change.
Limited cross-species transmission and absence of mutations associated with SARS-CoV-2 adaptation in cats: A case study of infection in a small household setting
Authors: Chaintoutis Serafeim C. , Siarkou Victoria I , Mylonakis Mathios E , Kazakos George M , Skeva Panagiota-Nefeli , Bampali Maria , Dimitriou Marios , Dovrolis Nikolaos , Polizopoulou Zoe S , Karakasiliotis Ioannis , Dovas Chrysostomos I
Published: March 2021

In the present study, the course of SARS-CoV-2 natural infection in two asymptomatic cats is investigated. The source of the virus for the cats was their COVID-19-affected owner, with whom they were in continuous proximity, in a small household setting. Oropharyngeal and fecal swabs were collected to investigate the course of SARS-CoV-2 RNA concentrations, as well as the directionality of the chain
Adiponectin Alleviates Diet-Induced Inflammation in the Liver by Suppressing MCP-1 Expression and Macrophage Infiltration
Authors: Ryu Jiyoon , Hadley Jason T. , Li Zhi , Dong Feng , Xu Huan , Xin Xiaoban , Zhang Ye , Chen Cang , Li Senlin , Guo Xiaoning , Zhao Jared L. , Leach Robin J. , Abdul-Ghani Muhammad A. , DeFronzo Ralph A. , Kamat Amrita , Liu Feng , Dong Lily Q.
Published: March 2021

Adiponectin is an adipokine that exerts insulin-sensitizing and anti-inflammatory roles in insulin target tissues including liver. While the insulin-sensitizing function of adiponectin has been extensively investigated, the precise mechanism by which adiponectin alleviates diet-induced hepatic inflammation remains elusive. Here, we report that hepatocyte-specific knockout (KO) of the adaptor protein APPL2 enhanced adiponectin sensitivity and prevented mice from developing high-fat diet–induced inflammation, insulin resistance, and glucose intolerance, although it caused fatty liver. The improved anti-inflammatory and insulin-sensitizing effects in the APPL2 hepatocyte–specific KO mice were largely reversed by knocking out adiponectin. Mechanistically, hepatocyte APPL2 deficiency enhances adiponectin signaling in the liver, which blocks TNF-α–stimulated MCP-1 expression via inhibiting the mTORC1 signaling pathway, leading to reduced macrophage infiltration and thus reduced inflammation in the liver. With results taken together, our study uncovers a mechanism underlying the anti-inflammatory role of adiponectin in the liver and reveals the hepatic APPL2–mTORC1–MCP-1 axis as a potential target for treating overnutrition-induced inflammation in the liver.
Diabetes Distress, Daily Functioning, and A1C in Older Black Individuals With Diabetes and Mild Cognitive Impairment
Authors: Barman Navajyoti R. , Casten Robin J. , Rovner Barry W.
Published: March 2021

OBJECTIVE

The purpose of the cross-sectional study was to identify associations of diabetes distress, physical functioning, and cognition with A1C in older Black individuals with diabetes and mild cognitive impairment.

METHODS

The investigators analyzed previously collected data from 101 older Black individuals with diabetes and mild cognitive impairment. Participants were administered surveys at baseline to assess diabetes distress, physical functioning, and cognitive functioning and had A1C testing.

RESULTS

The mean age of participants was 68.4 years, and 62% were women. Participants with higher A1C showed worse self-reported daily functioning (r = −0.28, P <0.01). Three of four diabetes distress factors were positively correlated with A1C: emotional (r = 0.28, P <0.01), regimen-related (r = 0.33, P <0.01), and interpersonal distress (r = 0.27, P <0.01). In a multivariate regression with A1C as the dependent variable, only regimen-related diabetes distress (β = 0.32, P = 0.008) and self-reported daily functioning (β = −0.33, P = 0.019) were significant.

CONCLUSION

Regimen-related diabetes distress and self-reported daily functioning were found to compromise glycemic control in Black individuals with mild cognitive impairment and diabetes. This finding suggests that diabetes interventions should be multifaceted to improve glycemic control in the high-risk population of Black individuals with diabetes.
PENGARUH PELUKAAN BUAH JERUK NIPIS (Citrus aurantifolia S.) TERHADAP KANDUNGAN KLOROFIL DAN AKTIVITAS ENZIM DEHIDROGENASE SELAMA PEMATANGAN
Authors: Adinata Putra , Zulkifli Zulkifli , Ellyzarti Ellyzarti
Published: March 2021

Penelitian dilakukan pada bulan April 2012 untuk menentukan apakah pelukaan fisik mempengaruhi degradasi klorofil dan aktivitas enzim dehidrogenase selama proses pematangan buah eruk nipis. Penelitian dilakukan dalam percobaan faktorial 2x2 denga faktor A 2 taraf waktu pengukuran: 4 hari dan 8 hari setelah pelukaan. Faktor B adalah 2 perlakuan: tidak dilukai dan dilukai. ANOVA dilakukan pada taraf nyata 5%. Hubungan antara dehidrogenase dan klorofil ditentukan dengan regresi. Hasil menunjukkan bahwa pelukaan secara nyata mempengaruhi klorofila, b, total. Klorofil a, b dan total pada perlakuan lebih rendah dari kontrol. Waktu pengukuran secara nyata hanya mempengaruhi a dan b, tetapi tidak klorofil total. Klorofil a, b pada kontrol 8 hari setelah pelukaan lebih rendah dari 4 hari, tetapi klorofil b lebih tinggi. Hasil juga menunjukkan bahwa waktu pengukuran secara nyata mempengaruhi aktivitas dehidrogenase. Dehidrogenase 8 hari setelah pelukaan lebih rendah dari 4 hari. Pengaruh pelukaan terhadap hubungan antara aktivitas dehidrogenase dan kandungan klorofil terlihat 8 hari setelah pelukaan. Pelukaan mengubah hubungan dari negative menjadi positif dan pelukaan mempengaruhi degradasi klorofil, tetapi tidak berpengaruh terhadap aktivitas dehidrogenase.
KEANEKARAGAMAN FORAMINIFERA BENTIK DALAM SEDIMEN DASAR PERAIRAN TELUK BALIKPAPAN, KALIMANTAN TIMUR
Authors: Widianingsih Mastuti , Widiastuti Endang Linirin , Dewi Kresna Tri
Published: March 2021

Foraminifera bentik merupakan salah satu Protozoa yang dapat terawetkan dalam sedimen perairan. Organisme bersel tunggal ini telah banyak digunakan sebagai indikator lingkungan karena sangat sensitif terhadap perubahan lingkungan di sekitarnya. Penelitian ini bertujuan untuk mengetahui keanekaragaman foraminifera bentik dalam 20 sampel sedimen dasar perairan Teluk Balikpapan, Kalimantan Timur dalam kaitannya dengan beberapa parameter lingkungan air seperti kedalaman, kecerahan, temperatur, pH, turbiditas, salinitas, dan oksigen terlarut serta pembuatan peta sebaran spasialnya. Hasil penelitian menunjukkan bahwa terdapat 3 spesies foraminifera bentik yang mendominasi yaitu Asterorotalia trispinosa (1.553 spesimen) diikuti oleh Rotalia sp.1 dan Rotalia sp.2. Jumlah spesies terbanyak didapatkan pada titik TB-05 (33 spesies) yang terletak di bagian luar teluk Balikpapan. Indeks Keanekaragaman bervariasi dari 0 sampai 4. Besarnya nilai Korelasi Pearson untuk kedalaman, kecerahan, temperatur, pH, turbiditas, salinitas, dan oksigen terlarut berturut-turut yaitu 0,874; 0,962; 0,962; 0,966; 0,829; 0,966; dan 0,968. Nilai korelasi tersebut bervariasi dengan distribusi foraminifera bentik di daerah penelitian.
KARAKTERISTIK POHON UNTUK TIDUR MONYET EKOR PANJANG (Macaca fascicularis) DI KAWASAN YOUTH CAMP TAMAN HUTAN RAYA WAN ABDUL RACHMAN LAMPUNG
Authors: Setiawan Aji , Kanedi M. , Rustiati Elly L. , Panjaitan Ronald H. P.
Published: March 2021

Monyet ekor panjang (Macaca fascicularis) adalah primata yang mudah beradaptasi dengan aktivitas manusia. Jenis monyet ini mudah dijumpai di kawasan hutan yang dekat dengan kawasan pemukiman, perladangan, dan perkebunan, contohnya adalah area Youth Camp di Taman Hutan Raya Wan Abdul Rachman di Kabupaten Pesawaran, Lampung. Penelitian ini dilaksanakan menggunakan Metode Observasi dari bulan Agustus sampai September 2012 di areal Youth Camp Taman Hutan Raya Wan Abdul Rachman Lampung. Parameter yang diamati adalah saat monyet istirahat (immobile), yaitu diam, berdiri, duduk, tidur, serta posisi saat mencari lokasi untuk tidur pada suatu pohon sehingga dapat diketahui jenis pohonnya. Data yang terkumpul diinterpretasikan secara deskriptif. Terdapat enam jenis pohon yang digunakan untuk tidur yaitu bambu (Bambusa sp.), dahu (Dracontomelon dao Merr. Et Rolfe.), ki hujan (Samanea saman (Jacq.) Merr.), pulai (Alstonia pneumatophora Back. Ex don Berger.), dadap (Erythrina variegate L.), benda (Artocarpus elasticus Reinw. ex Blume). Pohon untuk tidur monyet ekor panjang berkarakteristik tinggi dan memiliki tajuk yang luas, serta dekat dengan sumber air.
STUDI TUMBUHAN SUMBER PAKAN MONYET EKOR PANJANG (Macaca fascicularis) DI KAWASAN YOUTH CAMP TAMAN HUTAN RAYA WAN ABDUL RACHMAN LAMPUNG
Authors: Quinda Bona , Kanedi M. , Nurcahyani Nuning , Panjaitan Ronald H. P.
Published: March 2021

Jenis pakan monyet ekor panjang dapat berupa daun, buah, biji, bunga, serangga, dan telur burung. Tujuan penelitian ini adalah untuk mengetahui jenis-jenis tumbuhan dan bagian tumbuhan yang digunakan sebagai sumber pakan monyet ekor panjang serta lokasi tempat mencari makan. Penelitian ini dilaksanakan dari bulan Agustus sampai dengan September 2012 di kawasan Youth Camp Taman Hutan Raya Wan Abdul Rachman Lampung. Penelitian ini menggunakan metode observasi. Terdapat 10 jenis tumbuhan yang menjadi sumber pakan monyet ekor panjang, yaitu dahu (Dracontomelon dao Merr. Et Rolfe.), hampelas (Ficus tinctoria), bayur (Pterospermun javanicum), waluhan (Cucurbitaceae), waru (Hibicus tiliaceus), keranji (Dalium plattysepalum), bambu (Bambusa sp.), matoa (Pometia pinnata J. R. & G.Forst.), nangka (Arthocarpus integra), dan melinjo (Gnetum gnemon). Bagian pohon yang dimakan berupa buah, daun dan bunga.
LAJU PERTUMBUHAN ZOOPLANKTON Diaphanosoma sp. DENGAN PEMBERIAN PAKAN KOMBINASI FITOPLANKTON Tetraselmis sp., Nannochloropsis sp. DAN Dunaliella sp. DI LABORATORIUM
Authors: Wina Bertha , Murwani Sri , Rusyani Emy
Published: March 2021

Diaphanosoma sp. atau dikenal sebagai kutu laut, berpotensi sebagai pakan hidup untuk larva ikan dan udang karena siklus hidupnya relatif singkat sehingga memungkinkan untuk diproduksi secara masal. Untuk mengetahui pengaruh pemberian pakan kombinasi fitoplankton Tetraselmis sp., Nannochloropsis sp. dan Dunaliella sp terhadap laju pertumbuhan populasi Diaphanosoma sp. maka dilakukan serangkaian penelitian pada skala laboratorium dari bulan Maret sampai April 2013 di Laboratorium Pakan hidup Balai Besar Pengembangan Budidaya Laut Lampung dengan menggunakan Rancangan Acak Lengkap dengan 4 perlakuan dan 5 ulangan. Hasil penelitian menunjukkan bahwa kepadatan, 1064 Ind/L dan pertumbuhan populasi tertinggi, 87,634 %, terdapat pada kultur yang diberi pakan 50 %Tetraselmis sp. + 25 % Nannochloropsis sp. + 25 % Dunaliella sp.. Hasil analisis proksimat menunjukkan bahwa pakan kombinasi Tetraselmis sp. 50 % + Nannochloropsis sp. 25 % + Dunaliella sp. 25 % memiliki kandungan gizi yang paling baik yaitu protein 44,46 %, karbohidrat 10,34 % dan lemak 4,21 %.
HISTOPATOLOGI GINJAL MENCIT (Mus musculus L.) JANTAN AKIBAT RADIASI CAHAYA LAMPU MERKURI
Authors: Hidayat Rahmat , Busman Hendri , Nurcahyani Nuning
Published: March 2021

Lampu merkuri menjadi salah satu pilihan karena memiliki umur nyala yang panjang, hingga 24.000 jam. Radiasi yang dipancarkan lampu ini bukan hanya dalam bentuk fisik tampak, tetapi juga berupa gelombang elektromagnetik dan akan berinterakasi dengan semua materi yang memiliki potensial listrik. Untuk melihat pengaruh radiasi cahaya lampu merkuri terhadap struktur tubulus ginjal mencit (Mus musculus L.) jantan maka telah dilaksanakan penelitian di laboratorium Zoologi Jurusan Biologi FMIPA Universitas Lampung. Pembuatan preparat histologi ginjal dilaksanakan di Laboratorium Patologi Balai Penyidikan dan Pengujian Veteriner (BPPV) Regional III Bandar Lampung. Penelitian ini dilaksanakan dari bulan Oktober sampai November 2012. Kerusakan tubulus ginjal yang ditemukan dalam pemajanan 12 dan 16 jam/hari selama 21 hari berupa perdarahan intertubular, piknosis, karioreksis, kariolisis, kongesti, dan nekrosis. Perdarahan intertubulus hanya ditemukan pada perlakuan 4 jam/hari, sedangkan pada perlakuan 8 jam/hari ditemukan perdarahan intertubulus, piknosis, dan karioreksis.
PENGARUH RADIASI LAMPU MERKURI TERHADAP BERAT DAN PANJANG FETUS MENCIT (Mus musculus L.)
Authors: Selvia Dewi , Nurcahyani Nuning , Busman Hendri
Published: March 2021

Radiasi gelombang elektromagnet yang dipancarkan oleh lampu merkuri dapat mem- pengaruhi proses pembelahan sel embrio mencit. Radiasi yang mengenai sel embrio tersebut akan menyebabkan pertumbuhan tidak normal dan mempengaruhi morfologi fetus mencit. Tujuan penelitian ini adalah untuk mengetahui pengaruh radiasi lampu merkuri terhadap berat dan panjang fetus mencit (Mus musculus L.). Penelitian ini menggunakan pemajanan lampu merkuri selama 18 hari sebagai bentuk perlakuan terhadap mencit bunting. Hasil analisis ragam berat badan fetus dan panjang fetus menunjukkan perbedaan nyata terhadap kontrol, dan uji lanjut BNT 5% pada berat badan menunjukkan hasil bahwa semua perlakuan memiliki pengaruh yang berbeda, kecuali pada perlakuan pemajanan 12 jam/hari dan 16 jam/hari menunjukkan pengaruh yang tidak berbeda. Panjang fetus kontrol menunjukkan perbedaan dengan semua perlakuan, tetapi pemajanan 4 jam/hari tidak berbeda dengan pemajanan 8 jam/hari, begitu juga antara pemajanan 12 dan 16 jam/hari tidak menunjukkan pengaruh yang berbeda.
STUDI VARIASI MORFOLOGI TANAMAN TOMAT GUNUNG (Lycopersicum esculentum Mill. var. cerasiforme) DI BANDAR LAMPUNG
Authors: Fitriyati Fatimah , Ellyzarti Ellyzarti , Lande Martha L.
Published: March 2021

Tomat gunung merupakan tomat pertama yang didomestikasi yang berasal dari Peru dan Chili. Varietas tomat ini memiliki tekstur yang berair, ketika matang berwarna merah menyerupai buah ceri dan berukuran kecil dengan diameter sekitar 1,5 cm. Tujuan penelitian ini adalah untuk mengetahui variasi morfologi tanaman tomat gunung. Penelitian ini telah dilaksanakan dari bulan Mei sampai Agustus 2013. Tahap pertama adalah pengumpulan sampel buah tomat gunung di pasar yang ada di Bandar Lampung. Tahap kedua adalah penanaman biji tomat selama 3 bulan dan pengamatan morfologi batang, daun, bunga dan buah, pada saat tanaman berumur 3 minggu hingga berbuah. Data yang diperoleh dianalisis secara deskriptif dan disajikan dalam bentuk tabel dan foto. Dari hasil pengamatan yang telah dilakukan, diperoleh morfologi batang bulat, beruas-ruas dengan permukaan yang kasar serta berbulu. Batang memiliki banyak cabang dan berwarna hijau kecoklatan. Daun tomat gunung tersusun majemuk menyirip dengan anak daun ganjil, berwarna hijau tua, permukaannya kasar dan berbulu, tepinya dengan toreh berlekuk dan bentuk daun memanjang, ujung daunnya runcing dan pangkal daunnya tumpul. Bunga tersusun majemuk, berbentuk bintang, zigomorf, mahkota berwarna kuning, dan kelopak berwarna hijau tua. Terdapat tiga tipe variasi buah tomat, yaitu bulat, bulat lonjong, dan bulat pipih.
A Study of Techno-Pedagogical Skills and Teachers’ Performance in HTTTC Kumba, Cameroon
Authors: Lyonga Ngemunang Agnes Ngale , Moluayonge Gracemary Eloheneke , Nkeng Asobo J.
Published: March 2021

This study set out to investigate the relationship between techno-pedagogic skills and teachers’ performance in HTTTC Kumba. It was hypothesized that Techno-pedagogical skills have no significant relationship with teachers’ performance in HTTTC Kumba. A multistaged sampling technique was used for the study and all the fourteen departments in HTTTC Kumba were included in the study. A total of 42 teachers were selected using a simple random sampling technique. The instrument used for the study was a questionnaire. The data was analysed using frequencies and percentages for descriptive statistics while the Chi-Square Test and Pearson’s Coefficients of Correlation were used for testing the hypothesis in SPSS version 21. The results revealed that there is a significant positive relationship between techno-pedagogical skills and teachers’ performance in HTTTC Kumba. Based on the results of the findings, it was concluded that techno-pedagogical skills have a significant positive relationship with teachers’ performance in HTTTC Kumba. It was recommended that educational practitioners should know how to weave subject area content, pedagogy and technology effectively in their classroom interaction. Lack of knowledge in the part of teachers regarding techno-pedagogical skills is a major constraint in blending these aspects.
Demographic carrying capacity model: A tool for decision-making in Rapa Nui
Authors: Bergamini Kay , Moris Roberto , Ángel Piroska , Zaviezo Daniela , Gilabert Horacio
Published: March 2021

The increase of population in Rapa Nui (Easter Island) has fueled concerns within the community, given the uncertainty of its impacts. These concerns have driven a socio-political process that triggered the enactment of Law 21,070, which regulates the access and permanence of visitors in the territory as a way to cushion the pressure on different environmental, social, and infrastructure components that affect the local quality of life. However, for its application, this law requires technical foundations that allow restrictions to be applied and, therefore, knowledge about the demographic capacity of the territory is also needed. To this end, a dynamic model was built, which consists of different variables that are sensitive to population growth and also can be projected into the future, thus delivering timely information for decision-making. This paper describes the socio-political context for the creation of this instrument, as well as its elaboration process and main results.
DAMPAK PERDAGANGAN INTERNASIONAL TERHADAP PERTUMBUHAN EKONOMI INDONESIA PADA TAHUN 2009-2019
Authors: Yuni Revita
Published: March 2021

Perdangangan internasional sangat mempengaruhi pertumbuhan ekonomi suatu negara. Salah satu indikator pertumbuhan ekonomi adalah dengan Produk Domestik Bruto (PDB). PDB merupakan indikator kesejahteraan perekonomian di suatu negara dan dapat menjadi rujukan untuk mengukur kesejahteraan masyarakat yang diukur dengan tingkat pendapatan (income). Maka semakin meningkat ekspor suatu negara, pendapatan masyarakat akan meningkat pula. Metode Penelitian yang digunakan dalam penelitian ini adalah dengan menggunakan analisis deskriptif kualitatif. Dengan cara mendeskripsikan fenomena-fenomena yang terjadi akibat dampak perdagangan internasional terhadap ekonomi Indonesia. perdagangan luar negeri dengan kegiatan ekspor dan impor memiliki pengaruh atau dampak terhadap pertumbuhan ekonomi. Hal ini juga sejalan dengan teori perdagangan internasional yang dikemukakan oleh Heckscher-Ohlin yang menyebutkan bahwa Net-Ekspor atau ekspor netto merupakan salah satu faktor terpenting dari Gross National Product (GNP), sehingga dengan berubahnya nilai Net-Ekspor maka akan memberikan pengaruh terhdap perubahan dari pendapatan nasional.
The Prevalence of Fast Food Consumption Among Undergraduates: Evidence from Malaysia
Authors: Mokhtar Marziah , Yusoff Sabariah , Muhamad Murad Nur Aqilah
Published: March 2021

The fast food industry has been growing rapidly since its first opening in Malaysia in 1980s. The trend of consuming fast food continues to grow at a rapid rate especially among students. Therefore, the purpose of this study is to investigate various key determinants of fast food consumption among Malaysian undergraduates as they constitute a large percentage of fast food consumers. A set of validated questionnaires was used in gathering data on the key determinants of fast food consumption prevalence namely consumer behaviour, personal lifestyle, and product attributes. A quantitative investigation was conducted on the data using SPSS package. Few analyses namely Descriptive, Reliability and Multiple Regression were used. The Pearson Correlation indicates product attributes have a strong correlation while there is a moderate one for both consumer behaviour and personal lifestyle. Multiple Regression Analysis results highlight that personal lifestyle and product attributes are both positively significant while consumer behaviour, which positively affects fast food consumption among the Malaysian undergraduates, is not a significant determinant.
Factors Influencing Cyberbullying Behavior among Malaysian Tertiary Students
Authors: Abdul Rahman Nor Azian , Hussein Norashikin , Rusdi Syezreen Dalina , Abd Aziz Zarith Delaila
Published: March 2021

Cyberbully is an evolvement from traditional and physical bully to bullying through internet. The advancement of internet and social media has provided new platform through which children, adolescents, and young adults to explore the virtual world and exposes them to be involved in cyberbully as a target or an aggressor. Past studies have demonstrated that cyberbullying behavior has adverse physical and mental health consequences for individuals. However, study on cyberbully behaviour in the context of Malaysia is still limited. In fact tertiary students remain an understudied population regarding cyberbullying.  Tertiary students are an important population due to the fact that this phase of age forms habits that persist into young adulthood which consequently shape the community in future. Thus, the aims of this study is to determine the relationship between netiquette, loneliness and emotional availability of parents and cyberbullying behavior. Based on the findings, it was found that only netiquette has a negative significant relationship with cyberbullying behavior. This study is significant to the Ministry of Education, instititutions of higher learning education and community on identifying the factors and subsequently creating awareness programs in dealing with cyberbullying behaviours.
Knowledge and Attitudes of Academicians Towards Organ Donation: A Concept Paper
Authors: Ali Husin Liatul Izian , Mohamad Mozie Noorizan , Ghazali Norfazlina , Azizam Nor Azmaniza
Published: March 2021

The purpose of this paper is to examine the contributing factors towards the intention to become an organ donor. The literature reviews on the main issues about the awareness of public about organ donation. In Malaysia only 420,601 pledgers of organ donation which is equivalent to 1.3 percent of the total population of Malaysia. This figures in not sufficient to meet the demand from patients in the organ waiting list. Literature reported that the level of awareness in Malaysia is still low. Low organ donation rates have been linked to a lack of public awareness and knowledge about organ donation.  In order to get a better insight of what factors that may contribute to the intention of a person to become an organ donor, this paper, based on the past literature propose two factors: Knowledge and attitude as the predictor variables towards intention. The study intends to collect data from the academician in the Universiti Teknologi MARA, Selangor.
The effect of financial liberalization towards financial stability of Islamic banks in Malaysia
Authors: Muhamad arifin Nur Afizah , Mohd Arifin Noraini , Ramly Zulkufly , Mohd Hashim Maryam Jameelah , Abdul Aziz Nor Farradila , Kamaralzaman Surianor
Published: March 2021

Financial liberalization will affect the stability of the financial system due to excessive risk. Liberalization effort in Islamic banks players raises the issues of the ability of how Islamic banks can survive in the financial liberalization regime. Financial liberalization induced competition and thus impact on financial stability due to excessive risk taking. Malaysia is operating in dual financial system, the effect of mediating roles of competition and interest rate between financial liberalization is expected to be vary at some extend due to shariah constraint. This paper aims to analyze the effect financial liberalization and financial stability. Structural equation model – Partial least square (PLS-SEM) is used to analyze the research model with a comprehensive data set covering the Islamic banks over 1994 -2017. The empirical results denote a significant negative impact of financial liberalization on Islamic banks' financial stability in Malaysia. Lastly, it can be concluded that this study has an implication for policymakers and the banking industry

Financial liberalization will affect the stability of the financial system due to excessive risk. Liberalization effort in Islamic banks players raises the issues of the ability of how Islamic banks can survive in the financial liberalization regime. Financial liberalization induced competition and thus impact on financial stability due to excessive risk taking. Malaysia is operating in dual financial system, the effect of mediating roles of competition and interest rate between financial liberalization is expected to be vary at some extend due to shariah constraint. This paper aims to analyze the effect financial liberalization and financial stability. Structural equation model – Partial least square (PLS-SEM) is used to analyze the research model with a comprehensive data set covering the Islamic banks over 1994 -2017. The empirical results denote a significant negative impact of financial liberalization on Islamic banks' financial stability in Malaysia. Lastly, it can be concluded that this study has an implication for policymakers and the banking industry
A Possible Compatibility of Buddhist and Western Economics: A Cohesiveness Agendum to the Emerging Global Issues
Authors: Wangchuk Dorji , Subba Tara
Published: March 2021

The principles of Buddhist economics have commenced to gain impetus among the business and well-being scholars, however, with little impact on the negligence and constriction principles of Western economics. Therefore, this review article explores the conceptualism dichotomy of Buddhist economics and Western economics, and principles of Buddhist economics as a pragmatic way of attaining sustainable well-being and happiness. In addition, the article examines the reliability of Buddhist economics as an economic development policy. Articles were retrieved from the web-based databases and academic search engines using thematic key words like Buddhist economics, Western economics, well-being, happiness and global issues. The data generated through detailed reading of the 66 articles were analysed within and across using constant comparison analysis technique of QUAL approach. The findings suggest that the compatibility of Buddhist and Western economics is a cohesive solution to the emerging global issues. This article also draws attention of the policymakers and economic experts to reexamine their economic policies for the common well-being of global populace and the sustainability of the economy itself.
Theorizing University Students’ Engagement Behavior in Learning: A Faculty of Business and Management Perspective
Authors: Shariff Siti Halijjah , Putit Lennora , Kamarul Zaman Maliza Delima
Published: March 2021

Engagement studies have been widely researched over the past decade. This theoretical paper highlights the need to examine influential factors such as students’ attitude, academics’ influence, and perceived control on knowledge and skills are affecting students’ engagement behavior in the learning developmental process. The study employs a quantitative research design by using quota-sampling technique. A total of 300 survey questionnaires are to be distributed to undergraduate students from the business and management faculty of a public university. Descriptive and inferential statistical procedures for data analysis would be carried out using both SPSS and Smart PLS-SEM statistical software. This study holds potential contribution towards generation of knowledge in understanding the psychological drives for learning engagement and its behavioral outcomes. By assuring active learning engagement amongst university students, it can attainably assist towards nation building of employable graduates who are knowledgeable, skillful, and resilient upon embracing the Industry Revolution 4.0.
Cash Waqf for education: Prospects and challenges
Authors: Bakar Ridzwan
Published: March 2021

This article is written based on author’s personal experience with waqf program implementation (philantrophy activities) mainly in executing cash waqf for education in Malaysia, Indonesia and Cambodia. In particular, the article provides brief literature on waqf and cash waqf, describes success story, highlights prospects and challenges in implementing cash waqf for education.
Application of normative frameworks for assessing availability of socio-economic policies based on maqasid al shari’a principles in Muslim countries: A proposal
Authors: Abubakar Mustapha , Ringim Kabiru Jinjiri
Published: March 2021

The objective of this paper is to propose a framework that will assess the availability of maqasid al shari’a  based socio-economic policies in Muslim countries, and whose nebulous institutions are perturbed by the statistic that 504 million people are living in multi-dimensional poverty, suffering from range of deprivations in forty-three member countries of the Islamic Development Bank (IDB). Lack of or weak access to adequate resources remain the primary issues faced by many nations. In the midst of this though, there is a recurring argument that the level of socio economic development of human well-being must be improved. To understand development challenges of  socio-economic framing in the current Muslim world,  factors such as education, health, spirituality, lives and property, economy, food security as well as youth employment as based on maqasid al shari’ah framework model merit consideration. Accordingly, this paper seeks to address the gap in the current literature by incorporating education and youth unemployment factors into the socio-economic development model which is based on maqasid al sharia’h framework. The study adapted the principles of Islamic divine law that ensures an inclusive socio-economic development policy devoid of tribal, ethnic or religious sentiments. The study offered  recommendations for further research on maqasid al sharia’ah  applications on the socio-economic development of both Muslim and Muslim-minority countries.
Measurement of Return on Asset (ROA) based on Comprehensive Income and its Ability to Predict Investment Returns: an Empirical Evidence on Go Public Companies in Indonesia before and during the Covid-19 Pandemic
Authors: Kusuma Marhaendra
Published: March 2021

Purpose - The concept of recognizing all inclusive income, which is used by IFRS and Indonesian SAK, is the basis for presenting other comprehensive income in the income statement. This change in format became the idea of developing a financial performance measurement.Methodology - Testing the effect of attributable comprehensive income ROA and attributable ROA net income on future cash flows and net income, as a proxy for the ability to provide future returns, and applying them in measuring performance before and during the Covid-19 pandemic.Findings - ROA net income is better able to predict future investment returns. ROA comprehensive income has more relevance value, when only other items of comprehensive income that have the potential to be realized are included. In assessing performance, users are advised to keep using the ROA of the net income version, and when using the ROA of the comprehensive income version, it is advisable to include only OCI which will be reclassified. The financial performance of companies in many industrial sectors experienced a decline during the Covid 19 pandemic using two ROA measures.Novelty - Development of ROA formulation by including other comprehensive income and profit attribution, so far ROA is only based on net income.