bluuebunny/crossref_metadata_2025 huggingface dataset:
Plastic Buckling of Metallic and Nonmetallic Thin-Walled Tubes under Static Axial Compression
Authors: Albadrany Ayad Aied Mahuof
Published: June 2022

An experimental study for series of tests were conducted on stainless steel 304 and polyvinylchloride circular tubes loaded statically and axially at room temperature. The specimens tested with same variation of slenderness ratio for both materials with constant axial length. Load-deflection characteristics for stainless steel 304 and polyvinylchloride circular tubes specimens and the influence of plastic properties and collapsing load were illustrated .The experimental results are compared with other experimental published and give good agreement. It is showed that the values of initial peak load ,yield end load and plastic work increase with increasing slenderness ratio at constant length. Also it is observed that the collapse modes are different for both materials.
Study of Using Gabion to Protect Downstream Slope of Stone Weirs
Authors: Hayawee Ghanyah A. , Hayawee Hanaa A. , Hayawee Yusraa A.
Published: June 2022

In the present research, the stability of stone weirs protected by gabions and subjected to overtopping flow rates under the effect of high flow rates has been studied experimentally. Four weir models with different downstream slopes [1V:2.5H, 1V:3H, 1V:4H, 1V:5H, 1V:7.5H ] were constructed and tested. sixty experiments were carried out for four cases of gabions laying on the downstream slope, laying gabions with one layer and no connections (M-1), laying gabions with lateral connections (M-H), laying gabions with longitudinal connections (M-V), laying gabions with two layers (M-2] using three gravel diameters (11.11,15.9 and 22.25)mm. From the data analysis, many equations were obtained for the estimation of failure unit discharge in terms of equivalent gravel diameter, relative submerged intensity of gabions, gabions layer solidity, and tangent of internal friction angle of gabions, for each case of gabions laying. A simple method was presented for the design of stone weirs protected by gabions in terms of maximum failure discharge with the help of design charts obtained from the present study. Comparing results of the present study with those of other investigations show that stone weirs protected by gabions stand higher failure unit discharge than rockfill and earth weirs protected by gabions.
Study the Effect of Rotational Speed and Pouring Temperature on the Wear Resistance and Hardness of Alloy (A380) Reinforced with Different Volume Fraction of Alumina Particles
Authors: Mahdi Farouq Mansor , Abtan Najeb Salman , Al-Khazraji Mohaned A. H.
Published: June 2022

In this study, a cylindrical liner was produced by horizontal centrifugal casting process. The liner was composed from aluminum alloy (A380) matrix reinforced with alumina particles (Al2O3) with grain size of (63−125)μ and volume percent of 10,15 and 20%. The die was rotated at different speeds and its temperature was remained constant at (350)oC. In this present study, it was concluded that any increase in temperature difference between pouring and die temperature will reduce the surface defects. This study reveals that increasing the rotational speed refines the grain size but cause the alumina particles to be concentrated at the outer surface. Finally, it was found that the addition of alumina particles increases both hardness and wear resistance of the alloy.
Gestação gemelar: frequência de pré-eclâmpsia, diabetes gestacional e prematuridade
Authors: Pinto Bianca de Paiva , Abalem Giovanna Câmara , Mol Laura Ribeiro , Almeida Maria Eduarda Guilherme de Oliveira , Braga Maria Emília Castro , Oliveira Marina Mendonça Alvim de , Machado Marcela Rodrigues , Daldegan Isabelle Reis , Zimmermmann Juliana Barroso
Published: June 2022

Objetivo: Avaliar a frequência de diabetes gestacional e síndromes hipertensivas em gestantes gemelares e associação com a corionicidade. Métodos: Tratou-se de uma coorte histórica onde foram estudadas 121 pacientes, sendo 63 gestações gemelares. Como não expostas, foram estudadas 58 gestantes do baixo risco obstétrico, atendidas no mesmo período.  Resultados: A média de idade das gestantes foi de 28,60 ± 7,05 anos, de 2,14 ± 1,49 gestações, 0,80 ± 1,15 partos e 0,25 ± 0,64 abortos. A grande maioria das gestações gemelares foi natural, sendo a Fertilização In Vitro (FIV) identificada apenas em 7,0% dos casos. As gestações monocoriônicas foram identificadas em 12,7% dos casos. O ganho de peso materno no pré-natal foi de 9,50 ± 4,31 quilos nas gestações únicas e de 13,7 ± 6,77 nas gestações múltiplas (p<0,05). As síndromes hipertensivas foram diagnosticadas em 8% dos casos, estando associada às gestações gemelares (p<0001; X2=28,3). O diabetes gestacional foi identificado em 10,9% das gestantes, estando associado à gestação gemelar (p<0,001; X2=12,8). A corionicidade não foi fator relevante para o DMG e síndromes hipertensivas (p>0,05). Conclusão: As gestações gemelares se associaram a maior ganho de peso maternal, diabetes gestacional síndromes hipertensivas na gravidez e prematuridade.
Electron Transfer of Functionalised Quinones in Acetonitrile
Authors: Hsu Tzu-Yao , Berthin Roxanne , Serva Alessandra , Reeves Kyle , Salanne Mathieu , Jeanmairet Guillaume
Published: June 2022

Quinones are redox active organic molecules that have been proposed as an alternative choice to metal-based materials in electrochemical energy storage devices. Functionalization allows to fine tune not only their chemical stability but also the redox potential and the kinetics of the electron transfer reaction. However, reaction rate constant is not solely determined by the redox species but is also impacted by solvent effects. In this work, we show how the functionalization of benzoquinone with different functional groups impacts the solvent reorganization free energies of electron transfer half-reactions in acetonitrile. The use of molecular density functional theory, whose computational cost for studying electron transfer reaction is considerably reduced compared to state-of-the art molecular dynamics simulations, enables to perform a systematic study. We validate the method by comparing the predictions of the solvation shell structure and the free energy profiles for electron transfer reaction to reference classical molecular dynamics simulations in the case of anthraquinone solvated in acetonitrile. We show that all the studied electron transfer half-reactions follow Marcus’ description, regardless of functional groups. Consequently, the solvent reorganization free energy decreases as the molecular size increases.
Regioselective anti-Silyllithiation of Propargylic Alcohols
Authors: Karad Somnath N. , Saito Hayate , Shimokawa Jun , Yorimitsu Hideki
Published: June 2022

Among the known hydrosilylation or carbosilylation conditions of alkynes, anti-addition of the two units across the triple bond is considered rare compared to the syn counterpart. For anti-silylative vicinal difunctionalizations, transition-metal catalysts, such as ruthenium or palladium complexes, are generally required. Accordingly, silyl alkali metals have not been employed for those anti-addition transformations. Here we demonstrate that silyllithiums can add across the triple bond of a series of propargylic alkoxides regioselectively in an anti-fashion. Upon treatment with a variety of electrophiles, the tri-substituted alkenyl lithium intermediates were transformed into highly functionalized β-silyl allylic alcohols with high regio-control, eventually providing tri- or tetrasubstituted alkenylsilanes stereoselectively. A classic trick for anti-addition with propargylic alkoxides has transformed anti-silylative functionalizations into a robust and reliable strategy.
Metal-Catalyzed and Metal-Free Nucleophilic Substitution of 7-I-B18H21
Authors: Anderson Kierstyn , Djurovich Peter , Rubio Victoria , Liang Aimee , Spokoyny Alexander
Published: June 2022

In this work, two pathways of reactivity are investigated to generate site-specific substitutions at the B7 vertex of the luminescent boron cluster, anti-B18H22. First, a palladium-catalyzed cross-coupling reaction utilizing the precursor 7-I-B18H21 and a series of model nucleophiles was developed, ultimately producing several B-N and B-O substituted species. Interestingly, the B-I bond in this cluster can also be substituted in an uncatalyzed fashion, leading to the formation of various B-N, B-O, and B-S products. This work highlights intricate differences corresponding to these two reaction pathways and analyzes the role of solvents and additives on the product distributions. As a result of our synthetic studies, seven new B18-based clusters were synthesized, isolated, and characterized by mass spectrometry and Nuclear Magnetic Resonance (NMR) spectroscopy. The photoluminescent properties of two structurally similar ether and thioether products were further investigated, with both exhibiting blue fluorescence in solution at 298 K and long-lived green or yellow phosphorescence at 77 K. Overall, this work shows for the first time the ability to perform substitution of a boron-halogen bond with nucleophiles in a B18-based cluster, resulting in the formation of photoluminescent molecules.
Lipidomic Comparison of 2D and 3D Colon Cancer Cell Culture Models
Authors: Tobias Fernando , Hummon Amanda B
Published: June 2022

Altered lipid metabolism is one of the hallmarks of cancer. Cellular proliferation and de novo synthesis of lipids are related to cancer progression. In this study, we evaluated the lipidomic profile of two-dimensional (2D) monolayer and multicellular tumor spheroids from the HCT 116 colon carcinoma cell line. We utilized serial trypsinization on the spheroid samples to generate three cellular populations representing the proliferative, quiescent, and necrotic regions of the spheroid. This analysis enabled a comprehensive identification and quantification of lipids produced in each of the spheroid layer and 2D cultures. We show that lipid subclasses associated with lipid droplets form in oxygen-restricted and acidic regions of spheroids and are produced at higher levels than in 2D cultures. Additionally, sphingolipid production, which is implicated in cell death and survival pathways, is higher in spheroids relative to 2D cells. Finally, we show that increased numbers of lipids comprised of polyunsaturated fatty acids (PUFAs) are produced in the quiescent and necrotic regions of the spheroid. The lipidomic signature for each region and cell culture type highlights the importance of understanding the spatial aspects of cancer biology. These results provide additional lipid biomarkers in the tumor microenvironment that can be further studied to target pivotal lipid production pathways.
The occurrence of ansamers in the synthesis of cyclic peptides
Authors: Yao Guiyang , Kosol Simone , Wenz Marius , Irran Elisabeth , Keller Bettina , Trapp Oliver , Süssmuth Roderich
Published: June 2022

α-Amanitin is a bicyclic octapeptide composed of a macrolactam with a tryptathionine cross-link forming a handle. Previously, the occurrence of isomers of amanitin, termed atropisomers has been postulated. Al-though the total synthesis of α-amanitin has been accomplished this aspect still remained unsolved. We performed the synthesis of amanitin analogues, accompanied by in-depth spectroscopic, crystallographic and molecular dynamics studies. The data unambiguously confirmed the synthesis of two amatoxin-type isomers, for which we propose the term ansamers. The natural structure of the P-ansamer can be ansa-selectively synthesized using an optimized synthetic strategy. We believe that the newly described terminology does also have implications for many other peptide structures, e.g. norbornapeptides, lasso peptides, tryptorubins and others, and helps to unambiguously describe conformational isomery of cyclic peptides.
EL GIRO DEPENDENTISTA LATINOAMERICANO. LOS ORÍGENES DE LA TEORÍA MARXISTA DE LA DEPENDENCIA
Authors: Cárdenas Juan Cristóbal , Lana Seabra Raphael
Published: June 2022

El gran mérito y originalidad de este libro reside en que analiza el proceso de la creación de la teoría marxista de la dependencia investigando los escritos de sus fundadores, ya fallecidos, y a través de las reflexiones actuales de varios de sus colaboradores más cercanos. Las actuales generaciones de estudiantes e investigadores quizás no conozcan esta teoría y su significación o sólo tengan una idea vaga sobre ella debido a que fue formulada hace más de medio siglo y fue desplazada por el giro dogmático neoliberal. Los invito a leer este libro para responder a los desafíos actuales rescatando y renovando el pensamiento crítico latinoamericano (Cristobal Kay).
Behavior Financial Theory and Analysis of Investor Behavior in the Capital Markets in Lebanon
Authors: Abd Ali Zinah Najem , . ALhamad Akram M.
Published: June 2022

This paper discussed the market emergence in the Middle and East generally and Lebanon specifically. We first consider the main components of market emergence in Lebanon, including the size, depth, activity, and transparency of the market, and proceed to a descriptive analysis. Aggregating these observations into four bootstrapped indexes, we analyze the factors leading to market emergence with a probity model. We find that market size and activity seem to affect market emergence, whereas pricing and transparency do not. Finally, decomposing country-level probabilities and implementing a cluster analysis suggest that the average process of market emergence is more pronounced in the Lebanon region than it is in other emerging areas, such as Latin America and Eastern Europe. Overall, the results suggest that the Lebanon capital markets may attract more capital flows in the future. However, the markets are still heterogeneous: Whereas Turkey, Jordan, and Egypt are moving closer to the standards of developed countries, Lebanon, Tunisia, and Morocco can still be viewed as frontier markets.
COMPORTAMIENTO DEL CONSUMIDOR ADOLESCENTE, AREQUIPA 2021
Authors:   UNIVERSIDAD CATOLICA DE SANTA MARIA, AREQUIPA-PERU, Villanueva Paredes Grace Ximena , Aragón Zegarra Frank Piero ,   UNIVERSIDAD CATOLICA DE SANTA MARIA, AREQUIPA-PERU, Delgado García Vivianne Nikol ,   UNIVERSIDAD CATOLICA DE SANTA MARIA, AREQUIPA-PERU, Delgado Gutierrez Juan Eduardo ,   UNIVERSIDAD CATOLICA DE SANTA MARIA, AREQUIPA-PERU, Fernandez Enriquez Dayana Estefani ,   UNIVERSIDAD CATOLICA DE SANTA MARIA, AREQUIPA-PERU, Flores Mercado Fresia Nicole ,   UNIVERSIDAD CATOLICA DE SANTA MARIA, AREQUIPA-PERU, Rodríguez Polar Santiago ,   UNIVERSIDAD CATOLICA DE SANTA MARIA, AREQUIPA-PERU, Rojas Castillo Fátima Steffania ,   UNIVERSIDAD CATOLICA DE SANTA MARIA, AREQUIPA-PERU
Published: June 2022

This research allows to know the behavior of the adolescent consumer, which has varied year after year due to brand tendencies and other factors that influence their demands. Four techniques were used that allowed the collection of information through documentary observation, interviews, focus groups and surveys, which were analyzed and interpreted, separating the adolescent into two groups, early age (10 to 14) and mature age (15 to 19), thereby obtaining a complete analysis of the current situation. The results show that the thinking of the early adolescent and the mature adolescent are different, mainly due to the environment in which they develop and interact, as well as the influences that people have had on them. Since their needs of the types of teens are different, companies and brands choose different ways to captivate the teen consumer.
DESAFÍOS JURÍDICOS A PROPÓSITO DEL DERECHO AL ACCESO A LA INFORMACIÓN PÚBLICA EN MATERIA DE SALUD
Authors:   UNIVERSIDAD CATOLICA DE SANTA MARIA, AREQUIPA-PERU, Fernández Salguero James
Published: June 2022

The 1993 Political Constitution contains parts that cannot be modified and that at the doctrinal level are called “dogmatic”, since they contain essential prerogatives for the protection of the fundamental rights of the person, such as the case of the right to access to the public information on health. There are many international legal instruments and antecedents that recognize this right aimed at building a more democratic and transparent society, such is the case, for example, the Pact of San José or the International Covenant on Civil and Political Rights. In this sense, based on a review of current doctrine and jurisprudence, the different nuances of the right of access to public information on health will be analyzed, in order to contrast it with a conjunctural issue, that is, the acquisition of vaccines regarding the spread of covid-19. Such analysis will show that, currently, there is an urgent need to generate more specific standards regarding the content of the right of access to health information, since, as will be indicated later, there is no constitutionally legitimate justification that legitimately prevents the citizens to know the price of the Sinopharm vaccine. Keywords: Right to health; Access to public information; vaccination
LAS MEDIDAS CORRECTIVAS Y PROVISIONALES EN EL PROCEDIMIENTO ADMINISTRATIVO SANCIONADOR, UNA MIRADA CRÍTICA
Authors:   UNIVERSIDAD CATOLICA DE SANTA MARIA, AREQUIPA-PERU, Del Carpio Ugarte César Alejandro
Published: June 2022

The objective of this research work is to determine if the acknowledgment of administrative responsibility by the offending company can avoid causing damage to the company. That is why the principles of the State's sanctioning power have been analyzed, as well as the main characteristics of due process within the framework of the State's sanctioning activity, such as the right to contradiction, access to the file, the double administrative instance between others, the same ones that in their joint application allow the company to exercise its right of defense and oppose the decisions of the administrative authority. On the other hand, it has been determined that corrective measures are those measures that are dictated at the end of a sanctioning procedure and that can be dictated jointly to the sanctioning administrative process and that have the objective of returning things to the state prior to the commission of the punishable fact; in turn, it has been determined that the provisional measures are those that are issued within the framework of a sanctioning procedure and whose objective is to ensure compliance with the content of the resolution that puts an end to the procedure. That is why the recognition of administrative responsibility should not have an impact on the damage generated by the issuance of corrective measures as they are procedures that can be given in separate channels. Keywords: Administrative sanctioning procedure, acknowledgment of responsibility.
Challenges and innovations in undergraduate medical education during the COVID-19 pandemic – A systematic review
Authors:   Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Tan Claire Jing-Wen , Cai Cathryn ,   Department of Women’s Anaesthesia, KK Women’s and Children’s Hospital, Singapore, Ithnin Farida ,   Department of Women’s Anaesthesia, KK Women’s and Children’s Hospital, Singapore, Lew Eileen ,   Department of Women’s Anaesthesia, KK Women’s and Children’s Hospital, Singapore
Published: June 2022

Introduction: The COVID-19 pandemic has caused significant disruption to undergraduate medical education globally, with worldwide implementation of social distancing and lock-down measures. This systematic review aims to identify challenges in undergraduate medical education during the pandemic and report creative approaches that have been employed to ensure continuity of education. Methods: A MEDLINE (PubMed) search was performed for articles published between 1 February 2020 and 1 September 2020, corresponding to the pandemic’s global upsurge. Studies, commentaries, perspectives, and correspondence reporting challenges, adaptations and innovations in undergraduate medical education were screened. Data was grouped in accordance with the research questions it sought to address and analysed qualitatively. Results: 43 studies were included. The COVID-19 pandemic has resulted in lost opportunities for clinical exposure, reduced motivation, and heightened anxiety among medical students. Traditional teaching and assessment methods have transitioned to virtual platforms, harnessing video conferencing, social media, and virtual or augmented reality technologies. The long-term effectiveness of these solutions is uncertain, but immediate benefits conferred include increased access, improved time management, and cultivation of self-directed learning. The lack of authentic clinical experiences and patient interaction remains a major concern. Technical challenges and digital fatigue were also highlighted as pertinent challenges. Conclusions: The COVID-19 pandemic has provided unexpected, yet invaluable opportunities to explore new pedagogies that may be instrumental in shaping medical education in the new norm. As future members of the healthcare workforce, medical students should be integrated into current healthcare systems to equip them with knowledge and skills to manage future pandemics.
Pengembangan Kelembagaan dan Pembiayaan Geopark di Indonesia: Tantangan dan Strategi
Authors: Lestari Forina , Indrayati Ira
Published: June 2022

Geopark development is one of the national priority programs currently being intensified by the government at both the central and regional levels. There are three pillars of geopark development, namely conservation, economy (tourism), and education, that form the basis for sustainable regional development. This research focuses on institutional development and financing with case studies in Indonesia. Methods used in this research include literature study, online surveys to the Geopark Management Agency in Indonesia, and focus group discussions with experts and the central and regional governments. A content analysis was carried out with a descriptive approach to formulate alternative strategies for institutional development and financing in Indonesia. Results of this research show that institutions are the key to achieving independent, professional, and sustainable governance. In terms of financing, the Geopark management agency needs to be proactive in increasing alternative sources of financing such as innovation in geoproducts and geoservices, opportunities for collaboration with the private sector and the community, grant and loan, geo-sites assets management and others.
Mitigasi Gempa dan Tsunami melalui Flipped dan Online Class pada Organisasi Wanita se-Sumatera Barat
Authors: Isrona Laila , Wati Westi Permata , Yulistini Yulistini , Syah Nur Afrainin , Hardisman Hardisman
Published: June 2022

Provinsi Sumatera Barat berada diantara pertemuan Lempeng Eurasia, Lempeng Indo-Australia dan patahan (sesar) Semangko. Ketiganya merupakan daerah seismik aktif sehingga ada dua bencana yang mengintai Sumatera Barat terutama Kota Padang yakni gempa dan tsunami. Hal yang disayangkan adalah masih banyak masyarakat yang kurang memahami apa yang harus dipersiapkan dan dilakukan ketika bencana ini terjadi dan saat ini pun Indonesia juga dihadapkan pada pandemi Covid-19 sehingga terdapat tendensi bahwa daerah cenderung terlalu fokus pada pencegahan penyebaran COVID-19 dan tidak menyertakan mitigasi bencana alam dalam strategi penanganan COVID-19. Kegiatan Pengabdian Masyarakat ini bertujuan untuk meningkatkan pengetahuan masyarakat mengenai mitigasi gempa dan tsunami dengan menggunakan metode flipped class dan online class pada organisasi wanita se-Sumatera Barat. Kegiatan ini dibagi menjadi 2 sesi. Sesi 1 dihadiri 103 peserta dan sesi 2 dihadiri 80 peserta. Hasil evaluasi menunjukkan bahwa pengetahuan peserta mengenai mitigasi gempa dan tsunami mengalami peningkatan setelah seminar ditandai dengan peningkatan nilai post-test. Kegiatan ini diharapkan dapat meningkatkan kesadaran masyarakat untuk berpatisipasi aktif dalam membagi ilmunya terutama dalam keluarga sehingga risiko yang ditimbulkan oleh bencana dapat diminimalkan.
Revitalisasi Berbasis Translokal: Menghidupkan Kembali Puta Dino, Tenun Tidore yang Telah Punah
Authors: Solihat Ade , Mastuti Dwi Woro Retno , Harapan Ari Anggari
Published: June 2022

Puta dino adalah istilah untuk kain atau wastra di Tidore. Masyarakat Tidore pada masa kini masih mempertahankan berbagai tradisi dengan menggunakan kain adat. Namun, dalam ritual adat, masyarakat Tidore yang diwajibkan mengenakan pakaian adat tidaklah menggunakan kain adat khas Tidore, melainkan kain beragam motif dari wilayah Indonesia di luar Tidore. Tidak ditemukannya kain adat khas Tidore dalam berbagai pelaksanaan ritual adat tersebut, mendorong komunitas Ngofa Tidore (pemuda Tidore) untuk menghidupkan kembali kebudayaan menenun di Tidore. Tim Pengabdian kepada Masyarakat (Pengmas) Universitas Indonesia, menyambut ajakan Ngofa Tidore untuk bermitra dalam upaya menghidupkan kembali puta dino di masyarakat Tidore. Metode yang digunakan adalah penerapan Ipteks bagi Masyarakat, dengan Model Revitalisasi Berbasis Translokal. Model revitalisasi ini mengarahkan kepada proses memunculkan kembali puta dino yang bukan saja melibatkan kondisi dan potensi masyarakat di Tidore, namun juga melibatkan potensi masyarakat di Jepara dan Jakarta. Para penenun dikirim ke Jepara untuk mempelajari teknik menenun. Adapun Jakarta adalah tempat munculnya inspirasi untuk melahirkan kembali puta dino dan tempat bagi proses sosialisasi serta promosi puta dino, sebagai salah satu wastra nusantara. Hasil dari pendampingan ini adalah menguatnya motivasi para penenun, dan terbangunnya kesadaran dari banyak pihak untuk turut mendukung revitalisasi puta dino sebagai produk unggulan Tidore. Revitalisasi puta dino juga telah memperkokoh identitas sekaligus menunjukkan kontribusi Tidore dalam mewarnai mozaik wastra nusantara.
Analysis on Affecting Factors for the Income and Farming Scale Using the Panel Model
Authors:   Korean Institute of Smart Media, Jung Da-Eun , Kang Chang-Soo , Yang Sung-Bum , Park Yong-Soo
Published: June 2022

The purpose of this study is to analyze affecting factors on the income, farming scale, and farming implementation of graduates of the Korea National College of Agriculture and Fisheries using panel model. For this, we used a generalized estimation equation among the panel analysis methods. The factors that have a positive (+) effect on income were men, married people, and successive farmers. In the case of parents' cooperative farming, dairy farming or poultry farming, matching the major at the time of graduation with the main items, the income was also high. Factors that have a positive (+) effect on farming scale were unmarried people, parents' cooperative farming, aquaculture cultivation, and poultry farming. The factors that implemented the mandatory farming implementation well were men, married people, parents' cooperative farming, aquaculture cultivation, and pig farming. Through the results of this study, it will be possible to help manage and support graduates and enrolled students.
Inventarisasi Famili Ericaceae Di Taman Wisata Alam Danau Sicikeh-Cikeh Desa Lae Hole Kecamatan Parbuluan Kabupaten Dairi Sumatera Utara
Authors: Lubis Fitri Asyiah , Manalu Kartika , Rahmadina Rahmadina
Published: June 2022

ABSTRACT

The Ericaceae family has benefit as medicines and ornamental plants, because several types of the Ericaceae family have very attractive colors, fruits and flower shapes, besides that they have important ecological and economic values. This study aims to determine the types and morphology of the Ericaceae family in the Sicikeh-cikeh Lake Nature Tourism Park Lae Hole Village Parbuluan District Dairi Regency Sumatera Utara. This research were conducted in October - January 2020 using the exploration methods, namely by exploring along the path of the research location. The results of studies that have been carried out found 7 types of family Ericaceae, such as 4 of the genus Rhododendron, 1 of the genus Vaccinium, 1 of the genus Diplycosia, and 1 of the genus Cavendishia. The types of the Ericaceae family were found in this study had the same morphology, which has a taproot. The shape of the stem was round, and the direction grows perpendicular (erectus). The leaves are single leaves. Flowers including majmuk flowers, (terminal), and has flower parts, namely the crown of flowers, stamens and pistil. The fruit had a capsule and buni fruit.

 

Keywords : Inventory, Ericaceae Family, Morphology, Sicikeh-cikeh Lake Nature Tourism Park
INVENTARISASI TUMBUHAN PARASIT DI TAMAN WISATA ALAM DANAU SICIKEH-CIKEH DESA LAE HOLE KECAMATAN PARBULUAN KABUPATEN DAIRI SUMATERA UTARA
Authors: Hutasuhut Melfa Aisyah , Febriani Husnarika , Azizah Nur
Published: June 2022

Parasitic plants were usually considered harmful in the forest ecosystem, the changes of parasities is a counterweight to the ecosystem which is expected to tbe able to give benefits to the community. This study was aimed to determine the types of characteristic of parasitic plants in the natural tourist park of Lake Sicikeh-cikeh which was conducted in Oktober-December 2019 by using exploration method or roaming method and by utilizing qualitative descriptive as data collection techniques. The research result showed that were 7 species of parasitic plants were included become 5 families. those were 2 species of Balanophoraceae family, named (Balanophora papuana Schltr. and Rhopalocnemis palloides Jungh.), 2 species of Loranthaceae family, named (Macrosolen avenis Danser and Scurrula sp). 1 species of Santalaceae family, named (Dendromyza reinwardtiana (Blume ex Korth.) Danser), 1 species of Rafflesia family, named (Rafflesia meijeri Wiriad. & Sari), and 1 species of Orchidaceae family, named (Gastrodia sp.). Based on the characteristics of the hosts, Loranthaceae and Santalaceae family were parasite on tree, Balanophoraceae and Rafflesiaceae were parasite on roots and Orchidaceae family with Gastrodia sp. Species were parasite on fungus.
UJI ANTIBAKTERI Virgin Coconut Oil DARI BERBAGAI MEREK TERHADAP BAKTERI Staphylococcus aureus dan Enterococcus faecalis
Authors: Mayasari Ulfayani , Sapitri Alfi , Putri Sri Maulida
Published: June 2022

Virgin Coconut Oil (VCO) has the ability as an antivirus, antibacterial and antifungal, it is due to the content of lauric acid, caprylic acid, Staphylococeus aureus and Enterococcus faecalis are bacteria that act as normal flora in the human body. If it exceeds a certain limit, both of these bacteria can become pathogens. The purpose of this study is to find out Virgin Coconut Oil from various brands can inhibit the growth of Staphylococcus aureus and Enterococcus faecalis.

Antibacterial power test is done by the diffusion method to use the cylinder cup, and antibacterial power measured by the diameter of the urea inhibiting microbial growth by using a caliper. Antibacterial test results for Staphylococeus aureus bacteria on brand “A” (96.3 mm), brand “B” (10.3 mm), brand “C” (11 mm).The average brand “D” (8.6 mm), and in the bacteria Enterococcus faecalis in the brand “A” (3mm), brand “B” (6,1 mm), brand “C” (5.6 mm). Virgin Coconut Oil from various merck able to inhibit Staphylococeus aureus and Enterococcus faecalis bacteria.
PENGARUH PEMBERIAN KONSENTRASI GULA TERHADAP DAYA TAHAN SIMPAN SIRUP MANGGA ARUMANIS
Authors: Simahate Mawar , Rahmadina Rahmadina
Published: June 2022

Arumanis mango syrup is a thick juice produced from the flesh of the mango fruit arummanis with the addition of liquid sugar as a natural preservative to maintain durability save syrup. This research aims to know the concentration of sugar with a variation of different sugars can provide durability syrup mango fruit is longer. This type of research is research using the method of experimentation with proven influence durability save syrup fruit mango arummanis with 40% sugar, sugar 50%, 60%, 70%. The result showed that the concentration of sugar in the variation of 40% have staying power save syrup fruit mango fruit mango is low, i.e., on the 7th day already moldy syrup, sugar concentration at 50% also already moldy on day 8. Note that the concentration of sugar in the variation of 40% and 50% have a staying power save syrup mango fruit is lower, at 60% and sugar concentration of 70% have good conditions until the day to 27. This suggests that the higher the concentration of sugar then endurance save syrup mangoes will be increasingly long.
UJI DAYA HAMBAT ANTIJAMUR BUAH BELIMBING WULUH (Averrhoa bilimbi L.) TERHADAP PERTUMBUHAN Pityrosporum ovale PENYEBAB KETOMBE
Authors: Marliana Marliana , Mayasari Ulfayani
Published: June 2022

One of the plants that can be used as medicine is Wuluh starfruit (Averrhoa bilimbi L.). Starfruit fruit has antipyretic, antiseptic, anti-inflammatory properties, treats coughs and treats rashes. Wuluh starfruit (Averrhoa bilimbi L.) contains chemical compounds of flavonoids, saponins, alkaloids, and tannins. This study aims to determine the anti-fungal inhibition of star fruit (Averrhoa bilimbi L.) on the growth of Pityrosporum ovale which causes dandruff. The method used to obtain the extract of starfruit (Averrhoa bilimbi L.) through a maceration process using ethanol 96% solvent. The anti-fungal inhibition test used the agar diffusion method by sticking disc paper on the media that had been grown by the fungus Pityrosporum ovale. The results of phytochemical screening showed that the fruit of starfruit (Averrhoa bilimbi L.) contained flavonoid, alkaloid, tannin and saponin compounds. The resulting inhibitory power was indicated by the formation of a clear zone at each concentration of 20%, 40%, 60%, 80%, and as a comparison, a positive control of 10% ketonazole was made. The average diameter obtained was 6.26 mm, 7.09 mm, 7.57 mm, 8.07 mm, and 17.29 mm. Based on the results of the study, it was concluded that the extract of starfruit (Averrhoa bilimbi L.) had an inhibitory power against the growth of Pityrosporum ovale.
ANALISIS STRUKTUR DAN KOMPOSISI TUMBUHAN ASING INVASIF (INVASIVE SPECIES) PADA KAWASAN GUNUNG SIBUATAN DESA NAGALINGGA KECAMATAN MEREK KABUPATEN KARO SUMATERA UTARA
Authors: Noviyanti Ika Siti , Manalu Kartika , Hutasuhut Melfa Aisyah
Published: June 2022

ABSTRACT

Foreign Plants Invasive (Invasive Species) have the ability to grow and develop very quickly in an ecosystem so that they can cause environmental damage. The purpose of this research is to find out the structure and composition of weed plants in the area of Mount Sibuatan, Nagalingga Village, Brand District, Karo Regency, North Sumatra, using the checkered line method with 10 x 10 m in size plot which is placed by purposive sampling. Based on the research that has been carried out, it was obtained 20 families of 34 species with 452 individuals that divided into three levels of vegetation, namely trees, sapling and basic vegetation. The dominant families found consisted of the Asterceae and Euphorbiaceae families with 64.12% and 76.43% of percentage, the co-dominant families were the Poaceae and Rosaceae families with 17.06 and 16.20% of percentage. The highest Importance Value Index (INP) of the area is the species of Austroeupatorium inulifolium (Kunth) R.M.King & H. Rob with a value of 92.37. The invasive plants diversity index has moderate abundance of plant diversity. The spread patterns of invasive plants are include into the category of groups.
KEANEKARAGAMAN JENIS TUMBUHAN HIAS DI GUNUNG SIBUATAN DESA NAGALINGGA KECAMATAN MEREK KABUPATEN KARO SUMATERA UTARA
Authors: Ananda Rizky , Manalu Kartika , Hutasuhut Melfa Aisyah
Published: June 2022

This study aims to determine the diversity of species of plants that have the potential as ornamental plants in Mount Sibuatan, Nagalingga Village, Brand District, Karo Regency, North Sumatra. This study uses a single plot method by means of purposive sampling. The results of research that have been conducted at Mount Sibuatan, Nagalingga Village, Brand District, Karo Regency, North Sumatra, obtained 31 species, namely Amydrium humile Schott, Epipremnum pinnatum (L.) Engl, Pinnata sp, Dianella ensifolia (L.) Redout, Aspelnium nidus L, Asplenium normale D. Don, Sphaeropteris polypoda (Baker) RM Tryon, Calystegia sp, Tripterospermum trinerve Blume, Aeschynanthus pulcher (Blume) G. Don, Codonoboea crinita (Jack) CLLim, Hypnodendron sp, Huperzia phlegmaria (L.) Rothm, Medinilla beamanii Regalado, Anoectochilus longicalcaratus JJSm, Ceratostylis subulata Blume, Coelogyne xyrekes Ridl, Erythrodes blumei (Lindl.) Schltr, Mesophlebion motleyanum (Hook) Holttum, Freycinetia javanica Blume, Davallia denticulata (Burm.f.) pumila (Blume) Fern.Vill, Argostemma involucratum Hemsl, Argostemma parvifolium Benn, Mycetia angustifolia Ridl, Selaginella caudata (Desv.) Spring, Cayratia mollissima (Wall.) Gagnep, Gl obba marantina L and Hedychium cylincdricum Ridl. The Diversity Index of potential ornamental plants on Mount Sibuatan is categorized as medium with a value of 1.623, which is those with stable communities. The potential plant habitats for ornamental plants that are obtained are grouped into 3 types, namely habistus liana, terrestrial and epiphytic.

 
INVENTARISASI JAMUR DI TAMAN HUTAN RAYA (TAHURA) BERASTAGI KABUPATEN KARO, SUMATERA UTARA
Authors: RAHMADINA RAHMADINA
Published: June 2022

This study aims to determine the types of mushrooms, mushroom identification methods, the benefits of mushrooms, and how to collect mushrooms which was carried out from August to November 2019 at the Berastagi Forest Park (TAHURA), Karo Regency, North Sumatra. The sampling site was taken towards the North where the typography of the field is partly flat, steep and hilly with an air temperature of 23°C. Geographically, this Forest Park is located at 001'16"-019"32 North Latitude and 9812'16"- 9841'00" East Longitude. The method used is the Cruise Method or the method of cruising as far as 1 Km. Based on the results of research that has been carried out, it was found that 5 macroscopic mushroom families were Pythiaceae, Marasmiaceae, Ganodermataceae, Coprinaceae, Polyporaceae and 11 species of macroscopic fungi namely, Pythya vulgaris, Trametes versicolor, Ganoderma sp1, Ganoderma sp2, Ganoderma sp3, Marasmius siccus, Coprinus sp1, Coprinus sp2, Coprinus sp3, Laetiporus sp. The benefits of mushrooms in Trametes versicolor can be used for the treatment of HIV. Marasmius siccus is an edible mushroom species. Coprinus sp, a type of fungus used as an antioxidant and 6 species of macroscopic fungi that are toxic (poisonous), namely Pythya vulgaris, Ganoderma sp1, Ganoderma sp2, Ganoderma sp3, Laetiporus sp. Macroscopic mushrooms were collected by cutting the base of the fruit stem.

 

Keywords: Inventory, Mushrooms, Berastagi Forest Park.
Kepuasan Kerja dengan Intensi Turnover Pada Karyawan
Authors: Fadli Achmad , Adriansyah Muhammad Ali , Nur Rahmah Dian Dwi
Published: June 2022

Job satisfaction that is appropriate an expected by employee is loyal to the regulation and goals of the organization. This study aims to determine the correlation between job satisfaction on turnover intention in employee for regional enterprise of warehousing and miscellaneous business in Samarinda. This study used quantitative approach. Research subjects were all 30 employees of regional enterprise of warehousing and miscellaneous business in Samarinda and were then selected by using the technique of saturation sampling. The data obtained in this study are using by turnover intention and job satisfaction scale. Research data analyzed with a pearson r correlation analysis test and the partial correlation test. The results showed that there was a correlation between job satisfaction and turnover intention with a correlation coefficient (r) of -0.653 with a significance value of p = 0.000 (<0.05) which means that the two variables have a strong correlation, but show a negative correlation direction. Kepuasan kerja yang sesuai dengan harapan setiap karyawan yaitu loyal terhadap nilai-nilai dan tujuan organisasi, semakin puas seseorang terhadap pekerjaannya maka sedikit keinginan karyawan untuk meninggalkan organisasi. Penelitian ini bertujuan untuk mengetahui hubungan antara kepuasan kerja dengan intensi turnover pada karyawan Perusahaan Daerah Pergudangan dan Aneka Usaha Kota Samarinda. Penelitian ini menggunakan pendekatan kuantitatif. Subjek penelitian ini adalah seluruh karyawan PDPAU yang berjumlah 30 orang dan dipilih menggunakan teknik saturation sampling. Metode pengumpulan data yang digunakan adalah skala intensi turnover dan kepuasan kerja. Data yang terkumpul dianalisis dengan uji analisis berupa pearson r correlation dan uji korelasi parsial. Hasil penelitian menunjukkan bahwa terdapat hubungan antara kepuasan kerja terhadap intensi turnover yaitu dengan koefisien korelasi (r) sebesar -0.653 dengan nilai signifikansi p = 0.000 (< 0.05) yang artinya bahwa kedua variabel memiliki korelasi yang kuat.
Alienasi Pemuda dalam Politik: Peran Nilai dan Kepercayaan Politik Pada Partisipasi Politik Pemilih Pemula
Authors: Munawarah Rabiatul , Kristanto Andreas Agung
Published: June 2022

Youth’s awareness of the social phenomenon in society makes their political perspective as important as a matter of concern in each upcoming campaign period. Their values and judgments tend to lead them into certain actions or attitudes while participating in terms of politics. In order to understand this matter, this study is aimed to examine the correlation between personal values, political trust, and young voter's political participation. The research has been conducted through a quantitative approach using a political participation scale, personal value scale, and political trust scale. Researcher used accidental sampling technique to retrieve 102 young voters who have been legally registered due to regional law as a sample of respondents. Then, the obtained data were analyzed using Somer's Delta test. The result of Somers’d analysis have been shown that there is a correlation between personal values and political participation (r = 0,399 and p = 0,000; p < 0,05) and there is a correlation between political trust and political participation (r = 0,180 and p = 0,047; p < 0,05).esadaran pemuda yang tinggi terhadap fenomena sosial yang sedang terjadi di masyarakat membuat pandangan mereka terhadap politik menjadi hal yang turut diperhatikan di setiap periode kampanye mendatang. Nilai-nilai dan penilaian mereka cenderung mengarahkan kepada tindakan atau sikap tertentu dalam partisipasi politik. Sehingga, untuk memahami fenomena tersebut akan diteliti hubungan antara nilai personal dan kepercayaan politik dengan partisipasi politik pemilih pemula di kota Samarinda. Penelitian ini bertujuan untuk mengungkap derajat keeratan hubungan antara nilai personal dan kepercayaan politik dengan partisipasi politik. Penelitian dilakukan melalui pendekatan kuantitatif dengan pengumpulan data menggunakan skala partisipasi politik, skala nilai personal, dan skala kepercayaan politik. Penelitian menggunakan teknik accidental sampling dalam metode penarikan sampel. Kemudian, data yang diperoleh dianalisis menggunakan uji Somer’s Delta. Sampel penelitian adalah 102 orang pemilih pemula yang telah terdaftar sebagai pemilih tetap di kota Samarinda. Hasil analisis uji Somers’d menunjukkan bahwa ada hubungan antara nilai personal dengan partisipasi politik yaitu diperoleh nilai r = 0,399 dan p = 0,000 (p < 0,05). Kemudian, ada hubungan antara kepercayaan politik dengan partisipasi politik yaitu diperoleh nilai r = 0,180 dan p = 0,047 (p < 0,05).
Nilai Filosofi Budaya Jawa Terhadap Kebahagiaan Hidup Ditinjau Dari Demografi
Authors: Pratiwi Dea Citra , Adriansyah Muhammad Ali , Rahmah Dian Dwi Nur
Published: June 2022

This study aimed to determine the effect of the value of Javanese cultural philosophy on the happiness of life in terms of demographics on farmers in Sukaraja Village, Penajam Paser Utara. This study uses a quantitative approach. The subjects in this study amounted to 61 farmers who were selected using purposive sampling technique. Teh data collection method used is the Javanese culture scale and the happiness of life. The collected data were analyzed by univariate test. The results of the study indicate that; there is no significant effect between the values terms of demography with a significant value > 0.05.Penelitian ini bertujuan untuk mengetahui pengaruh nilai filosofi budaya Jawa terhadap kebahagiaan hidup ditinjau dari demografi pada petani di Desa Sukaraja, Penajam Paser Utara. Penelitian ini menggunakan pendekatan kuantitatif. Subjek dalam penelitian ini berjumlah 61 petani yang dipilih menggunakan teknik purposive sampling. Metode pengumpulan data yang digunakan adalah skala budaya Jawa dan kebahagiaan hidup. Data yang terkumpul dianalisis dengan uji univariat. Hasil penelitian menunjukkan bahwa; tidak ada pengaruh yang signifikan antara budaya Jawa terhadap kebahagiaan hidup petani ditinjau dari demografi dengan nilai signifikan > 0.05.
Hubungan Religiusitas Dengan Resiliensi Individu Dalam Keluarga Pada Penyintas Covid-19 Di Kota Balikpapan
Authors: Yustifah Syarifah , Adriansyah Muhammad Ali , Suhesty Aulia
Published: June 2022

The Covid-19 pandemic has had a major impact on family members in East Kalimantan, especially the city of Balikpapan with the highest number of positive Covid-19 cases. Family resilience can be formed through high religiosity so that family members can survive with all existing conditions. This study aims to empirically examine whether there is a relationship between family resilience and religiosity in Covid-19 survivors in Balikpapan City. The subjects of this study were 203 people who had tested positive for Covid-19 were selected using a purposive sampling technique. The measuring instrument used in this study is the Likert scale. The data analysis technique using the Pearson Product Moment correlation test resulted in a calculated r value of 0.635 and a P value = 0.000 (p < 0.05). This means that it has a strong relationship strength between the religiosity variable and the resilience variable which is indicated by a causal relationship where if there is an increase in the value of the religiosity variable, it will be followed by an increase in the value of the family resilience variable. Pandemi Covid-19 memberikan dampak yang besar bagi anggota keluarga di  Kalimantan Timur terutama kota Balikpapan dengan jumlah kasus positif Covid-19 tertinggi. Resiliensi keluarga dapat dibentuk melalui religiusitas yang tinggi agar anggota keluarga tetap dapat bertahan dengan segala kondisi yang ada. Penelitian ini bertujuan untuk menguji secara empirik ada atau tidaknya hubungan antara resiliensi keluarga dan religiusitas pada penyintas Covid-19 Di Kota Balikpapan. Subjek penelitian ini adalah 203 orang yang pernah dinyatakan positif terinfeksi Covid-19 dipilih menggunakan teknik purposive sampling. Alat ukur yang digunakan dalam penelitian ini yaitu skala likert. Teknik analisa data memakai uji korelasi Pearson Product Moment menciptakan nilai r hitung sebesar 0. 635 serta nilai P= 0. 000 (p <  0. 05). artinya memiliki kekuatan hubungan yang kuat antar variabel religiusitas dengan variabel resiliensi yang ditunjukan dengan hubungan sebab akibat dimana apabila terjadi penambahan nilai pada variabel religiusitas maka akan diikuti terjadinya penambahan nilai variabel resiliensi keluarga.