bluuebunny/crossref_metadata_2025 huggingface dataset:
Analisis Perbandingan Konsentrasi Suspended Particulate Matter (SPM) di Tiga Wilayah di Jakarta Periode Tahun 2006-2019
Authors:   Pusat Pendidikan dan Pelatihan Badan Meteorologi, Klimatologi, dan Geofisika, Widodo Juniarto
Published: December 2020

Suspended Particulate Matter (SPM) adalah polutan berbahaya yang umumnya diakibatkan oleh kontribusi bahan buangan dari asap kendaraan dan mesin pabrik. Penelitian ini untuk mendeskripsikan perbandingan polutan SPM pada tiga wilayah Jakarta yaitu Ancol, Monas dan Glodok berdasarkan analisis data SPM bulanan. Metode pengolahan dalam penelitian adalah analisis kuantitatif dengan memanfaatkan data bulanan SPM dari BMKG dari tahun 2006-2019. SPM diukur menggunakan alat HV Sampler dengan menggunakan kertas filter yang diputar dengan kecepatan tinggi. Hasil penelitian menunjukkan bahwa rata-rata konsentrasi SPM tertinggi terjadi di kawasan perdagangan Glodok (313 μgr.m-3), tertinggi kedua adalah Ancol (223 μgr.m-3) dan terendah terjadi di Monas (193 μgr.m-3). Nilai ambang batas aman SPM di udara adalah 230 μgr.m-3. Frekuensi kejadian SPM di atas ambang batas berturut-turut dari tertinggi hingga terendah adalah Glodok (73%), Ancol (44%) dan Monas (27%). Berdasarkan konsentrasi SPM di atas ambang batas secara rata-rata tahunan, untuk wilayah Ancol berlangsung lebih dari 6 bulan yaitu pada bulan Mei-Nopember, untuk wilayah Monas pada Juni-Agustus, namun untuk wilayah Glodok SPM berlangsung sepanjang tahun dari Januari hingga Desember. Buruknya kualitas udara di Glodok ini menunjukkan bahwa wilayah Glodok perlu mendapatkan penanganan agar udara semakin bersih dan nyaman untuk kesehatan dan kehidupan masyarakatnya.
INTERSEPSI DAN ALIRAN BATANG TANAMAN KOPI DENGAN BERBAGAI NAUNGAN DI SUMBERMANJING WETAN, MALANG
Authors: Mahasidhi Ni Made Sri Gitalaxmi , Prijono Sugeng
Published: December 2020

The current climate change has an impact on crop production, especially coffee plants. Rainfall is one of the climate elements that influences the process of crop cultivation, because of its role in the availability of water crops. Raindrops that fall on the vegetated land cover does not directly reach to ground, but will temporarily be accommodated by a canopy, stems and plant branch. Once those places saturated with water, the raindrops will drop to the soil surface through the canopy, stem flow and partially evaporated back into the atmosphere that called interception. The study aims to determine the effect of the shade of coffee plants on the interception, and stemflow of plant canopy. As well as knowing the relationship between rainfall with throughfall, stemflow, and interception. This research was conducted at smallholder coffee plantation in Sumbermanjing Wetan District on the use of gamal shade coffee grown, sengon shade coffee grown, and sun-grown coffee. The results showed that the value of canopy throughfall in the three land uses was not statistically significantly different, but there was a tendency for monoculture coffee plants which has a greater yield that is 66,38% of the total rainfall of 15,32 mm. The highest stemflow value is in the sengon shade coffee grown of 3,07% of the total rainfall of 15,32 mm. Interception in the gamal shade coffee grown is the highest compared to other land uses that results obtained are 36,92% of the total rainfall of 17,1 mm. Rainfall has a relationship with the value of stemflow, throughfall and interception. Based on the correlation analysis test the results were significantly correlated with strong relationship.
PENINGKATAN EFISIENSI PEMUPUKAN FOSFOR PADA ULTISOL DENGAN MENGGUNAKAN ABU TERBANG BATUBARA
Authors: Fahrunsyah F , Mulyadi M , Sarjono Agus , Darma Surya
Published: December 2020

Ultisol is one type of soil that has a very wide distribution in Indonesia, but the use of this soil faces many obstacles. The main problem in ultisol utilization is the low availability of phosphorus (P) and the low absorption efficiency. Coal fly ash (CFA) is a material that can overcome these problems. The objective of this study was to examine the effect of Application CFA on several soil chemical properties (pH, exchangeable Al, exchangeable Ca and available P), plant growth, yield, and absorption efficiency of P fertilizer. This study used a completely randomized factorial design consisting of two factors. The first factor was CFA that consisted of three levels of treatment, namely: A0 = 0 t ha-1 or without CFA, A1 = 40 t CFA ha-1, A2 = 80 t CFA ha-1. The second factor was P fertilizer that consisted of four levels of treatment, namely: P0 = 0 kg ha-1, P1 = 30 kg P ha-1, P2 = 60 kg P ha-1 and P3 = 90 kg P ha-1. The results of the study showed that the application of 80 t CFA ha-1 increased the pH by 13.41%, reduced exchangeable Al by 59.53% and increased exchangeable by Ca 192.66% compared to control. The combination 80 t CFA ha-1 and 90 kg P ha-1 increased available P by 986.79% compared to control. The application of 80 t CFA ha-1 resulted in the highest total plant dry weight and total P uptake. The treatment resulted in total plant dry weight of 172.96 g and total P uptake of 187.62 mg plant-1, increased 62.39% and 100.21% respectively compared to the control. The application of 90 kg P fertilizer ha-1 resulted in the highest total dry weight of maize, and total P uptake, namely 167.49 g and 174.39 mg plant-1, respectively, which means that the total plant dry weight increased by 51.00% and the total uptake P increased 69.79% compared to control. The highest seed dry weight was obtained in the combination of 80 t CFA ha-1 and 90 kg P ha-1, namely 39.33 g, an increase of 715.53% compared to the control. The combination of 40 t CFA ha-1 and 30 kg P ha-1 resulted in the highest absorption efficiency of P fertilizer, namely 30.43%. This means that in this treatment, maize can absorb 30.43% of the applied P fertilizer.
OS MOTORISTAS DA PLATAFORMA UBER: FATOS, JULGADOS E CRÍTICA
Authors: Oliveira Murilo Carvalho Sampaio , Costa Joelane Borges , Assis Anne Karolline Barbosa de
Published: December 2020

A era da indústria 4.0 e o trabalho por “parceria” proposto pelas plataformas digitais ascende no mercado de trabalho como uma nova tendência de produtividade e organização do trabalho, que repete, por sua vez, em novas vertentes, os impasses do Direito Laboral. O presente artigo tem como intuito principal examinar os impactos da economia digital na sociedade contemporânea e sua inovação nas relações de trabalho a partir dos novos arranjos oriundos dos avanços tecnológicos, tomando como exemplo sintomático o padrão da plataforma Uber. Inicia discutindo o cenário da economia digital e suas transformações nos modos de organizar a atividade empresarial, averiguando se tais mudanças se inserem no conceito de disrupção. Adiante, investiga a relação de trabalho promovida a partir da plataforma Uber, analisando como ela se insere nesse novo contexto de economia digital, e o estado de proteção jurídica dos trabalhadores “parceiros”. Com intuito de averiguar a condição formal-jurídica de liberdade dos motoristas parceiros e a plataforma Uber, analisará o perfil dos motoristas, e as condições de trabalho a eles submetidos a partir de resultados colhidos pós aplicação de questionários, afim de aferir o nível da condição econômica de hipossuficiência. Examina ainda as principais decisões judiciais que analisaram a relação jurídica da Uber e os motoristas, para, ao final, possuir elementos para concluir da desnecessidade ou necessidade dessa nova relação laboral estar protegida pelo Direito do Trabalho.
Right to Privacy and Malaysian Practice: A Step Further in Recognising another Aspect of Human Rights
Authors: Hashim Normawati , Mohd Yunus Abd Shukor
Published: December 2020

Privacy is an individual right that is fundamental to protect the dignity of a person, especially in the technological era. Currently, privacy is not part of human right under the Malaysian Federal Constitution. Conversely, European Union, South Africa, Hong Kong, and India were advance in the recognition. This is qualitative research analysing the need to move forward in recognising privacy as part of human right with reference to the practice of the European Union, South Africa, Hong Kong, and India. The outcome of the study is proposing a legal framework recognising privacy as a basic human right in Malaysia
Keywords: privacy; human rights; fundamental liberties; external intrusion
eISSN: 2398-4287© 2020. The Authors. Published for AMER ABRA cE-Bsby e-International Publishing House, Ltd., UK. This is an open access article under the CC BYNC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). Peer–review under responsibility of AMER (Association of Malaysian Environment-Behaviour Researchers), ABRA (Association of Behavioural Researchers on Asians) and cE-Bs (Centre for Environment-Behaviour Studies), Faculty of Architecture, Planning & Surveying, Universiti Teknologi MARA, Malaysia.
DOI: https://doi.org/10.21834/ebpj.v5iSI3.2570
Protection of Child Offenders at the Pre-Trial Process in Malaysia: Are We Doing Enough?
Authors: Ahmad Nadzriah , Hamid Abdul Ghafur , Wok Saodah
Published: December 2020

The adverse effects of the pre-trial process on child offenders are damaging, particularly on their mental, emotional and physical developments. This study adopted the qualitative design, and the results indicate that the majority of the child offenders affirmed that they were subjected to some forms of ill-treatment during the pre-trial process, particularly during the investigation stage, where they are subjected to questioning. Thus, the results can facilitate the policymakers in strengthening and developing the current laws and policies and to introduce diversion programmes as an alternative to the juvenile justice system in Malaysia.
Keywords: pre-trial process; questioning, juveniles; ill-treatment.
eISSN: 2398-4287© 2020. The Authors. Published for AMER ABRA cE-Bsby e-International Publishing House, Ltd., UK. This is an open access article under the CC BYNC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). Peer–review under responsibility of AMER (Association of Malaysian Environment-Behaviour Researchers), ABRA (Association of Behavioural Researchers on Asians) and cE-Bs (Centre for Environment-Behaviour Studies), Faculty of Architecture, Planning & Surveying, Universiti Teknologi MARA, Malaysia.
DOI: https://doi.org/10.21834/ebpj.v5iSI3.2571
The Kayans: Ontology of their tattoos and its meanings
Authors: Abdul Rahim Ruslan , Wan Royer
Published: December 2020

In Malaysia, the Kayans are just a minority group and have extensive traditional tattoos among the women folks. Anthropologists credited them as the pioneer of exquisite tattoos. The other tribes in Borneo got inspirations for their own body of art. This expansion of existing study attempts to make sense of the motifs and to address the intrinsic and extrinsic meanings of tattoo motifs and relate to their lives. Interviews among tattooed Kayan women folk provide the first-hand information about the implications of tattoos. The perspective of visual semiotics and semantics analysis ultimately shed light on the distant past.
Keywords: Kayan, Tattoo, Meaning, Motifs
eISSN: 2398-4287© 2020. The Authors. Published for AMER ABRA cE-Bsby e-International Publishing House, Ltd., UK. This is an open access article under the CC BYNC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). Peer–review under responsibility of AMER (Association of Malaysian Environment-Behaviour Researchers), ABRA (Association of Behavioural Researchers on Asians) and cE-Bs (Centre for Environment-Behaviour Studies), Faculty of Architecture, Planning & Surveying, Universiti Teknologi MARA, Malaysia.
DOI: https://doi.org/10.21834/ebpj.v5iSI3.2573
Interactions of Per- and Polyfluoralkyl Substances (PFAS) with Landfill Liners
Authors:   Deakin University, Geelong, Australia. Institute for Frontier Materials (Burwood Campus), Victoria, Australia, Gates Will P , MacLeod Alastair JN , Fehervari Andras , Bouazza Abdelmalek , Gibbs Daniel , Hackney Ryan , Callahan Damien L , Watts Mathew
Published: December 2020

This review synthesises the available published research on interactions of per- and polyfluoroalkyl substances (PFAS) with landfill liners, with the view to inform on the expected behaviour of these persistent environmental pollutants in landfills. The review addresses the nature and significant types of PFAS compounds that are destined for landfills, as well as their by-product. It discusses the known and anticipated interactions with separate landfill liner components, namely geomembranes, geosynthetic clay liners and compacted clay liners. Various water-soluble PFAS are shown to advectively transport through geosynthetic clay liners (GCL) and showcase the limitations of relying on mineral liners alone to retain PFAS. Addition of activated carbon, while increasing saturated hydraulic conductivity, significantly increases PFAS retention by the GCL and reduced PFAS flux to manageable concentrations. An assessment of the relative risk for environmental exposure of different types of PFAS from landfills through interaction with those liner components is achieved with reference to published case studies of PFAS detection in and around landfills from Australia and around the World.
Internet-Based Support and Coaching With Complementary Clinic Visits for Young People With Attention-Deficit/Hyperactivity Disorder and Autism: Controlled Feasibility Study
Authors: Sehlin Helena , Hedman Ahlström Britt , Bertilsson Ingrid , Andersson Gerhard , Wentz Elisabet
Published: December 2020

Background

Individuals with attention-deficit/hyperactivity disorder (ADHD) and autism spectrum disorder (ASD) can experience obstacles in traditional health care situations due to difficulties associated with their impairment.

Objective

This controlled study aims to investigate the feasibility of an internet-based support and coaching intervention (IBSC), including 2 weekly chat sessions and 2 complementary clinic visits with coaches over the course of 8 weeks, for adolescents and young adults with ADHD and/or ASD in 2 naturalistic routine care settings.

Methods

Individuals with ADHD and/or ASD aged 15-32 years were recruited in 2 clinical settings, where they received either IBSC (n=24) or treatment as usual (TAU; n=20). Outcome measures included self-report questionnaires assessing quality of life (Manchester Short Assessment for Quality of Life), sense of coherence (Sense Of Coherence 29), self-esteem (Rosenberg Self-Esteem Scale), and anxiety and depressive symptoms (Hospital Anxiety and Depression Scale [HADS] and Montgomery-Åsberg Depression Rating Scale-Self-reported, respectively).

Results

Significant between-group effects were observed in measures of anxiety (HADS) at postintervention (P=.02) as well as at the 6-month follow-up (P=.004). Significant between-group effects were also noted for depressive symptoms (HADS) postintervention (P=.04). The between-group effects were partially explained by a deterioration in the TAU group. A significant increase in self-esteem (P=.04) as well as a decrease in anxiety (P=.003) at the 6-month follow-up was observed in the intervention group following IBSC. Findings from a qualitative study of the intervention are consistent with the results.

Conclusions

The findings from this study suggest that IBSC holds promise as a feasible complement or alternative to traditional face-to-face health care meetings.
Social Network Analysis of Intensive Care Unit Health Care Professionals Measured by Wearable Sociometric Badges: Longitudinal Observational Study (Preprint)
Authors: Kawamoto Eiji , Ito-Masui Asami , Esumi Ryo , Ito Mami , Mizutani Noriko , Hayashi Tomoyo , Imai Hiroshi , Shimaoka Motomu
Published: December 2020

BACKGROUND

Use of wearable sensor technology for studying human teamwork behavior is expected to generate a better understanding of the interprofessional interactions between health care professionals.

OBJECTIVE

We used wearable sociometric sensor badges to study how intensive care unit (ICU) health care professionals interact and are socially connected.

METHODS

We studied the face-to-face interaction data of 76 healthcare professionals in the ICU at Mie University Hospital collected over 4 weeks via wearable sensors.

RESULTS

We detail the spatiotemporal distributions of staff members’ inter- and intraprofessional active face-to-face interactions, thereby generating a comprehensive visualization of who met whom, when, where, and for how long in the ICU. Social network analysis of these active interactions, concomitant with centrality measurements, revealed that nurses constitute the core members of the network, while doctors remain in the periphery.

CONCLUSIONS

Our social network analysis using the comprehensive ICU interaction data obtained by wearable sensors has revealed the leading roles played by nurses within the professional communication network.
Citizen Assessments of Government Actions in the COVID-19 Outbreak in China
Authors: Zha Hao , Zhang Youlang , Zhao Jing , Zhu Xufeng
Published: December 2020

This study investigates citizen assessments of government actions in the COVID-19 outbreak in China. Empirical analyses based on a large-scale online survey indicate that the Chinese public expects the government to improve its support for the frontline medical staff, management of public stress and anxiety, and disclosure of government information. Specifically, indirect exposure to COVID-19 through second-hand information is negatively associated with citizen assessments of government actions; by contrast, the first-hand frontline experience with the epidemic is positively associated with citizen assessments of government actions. Findings suggest that citizens with first-hand experience might be more able to judge government actions under the actual constraints of resources and opportunities, and are less likely to overemphasize the costs or risks associated with government actions than others without frontline experience. Our work suggests that governments should effectively communicate detailed information regarding government actions to the public during public health emergencies, as more informed citizens might be more supportive of governments with limited resources and, probably, more actively collaborate with governments.
Combating COVID-19 through Collaborative Governance: Lessons from East Asia
Authors: Mao Yexin
Published: December 2020

Collaborative governance plays a significant role in crisis management and greatly contributes to the fight against COVID-19. This article demonstrates how East Asia effectively combats COVID-19 through collaboration with enterprises, nonprofit organizations, and citizens. By comparing different countries’ responses, this study proposes three different types of collaborative governance models employed in combating the pandemic, namely the Chinese state-led cooperation model, South Korea's state-society synergy model, and Japan's social voluntary cooperation model. The findings demonstrate that there is no one-size-fits-all model to respond to the COVID-19 crisis. The specific response initiative that the government adopts is shaped by its state intervention and coercion capacity, as well as the social voluntary cooperation norm. Each country should take anti-pandemic measures based on its specific conditions. Achieving a balance between preventing the pandemic and maintaining social economic development is a challenge for governments. The three collaboration models drawn from the East Asian experience provide valuable lessons for combating the global pandemic and future crises.
Exploring the Drivers and Catalysts of Intra-agency Collaboration in the Local Service Delivery
Authors: Hsieh Jun Yi , Liou Kuotsai Tom
Published: December 2020

This study examines critical local service delivery issues to understand the drivers and catalysts of intra-agency collaborative domains. Based on the survey data of public employees in the Taipei Household Registration Office, this study provides empirical evidences to support the relationship between intra-agency collaboration and perceived organizational performance. The findings reveal the mediating role of central administrative organization and information sharing, but do not support the direct influence of stakeholder assistance. Implications of these findings are emphasized for future studies of local collaborative governance.
Instructional Leadership Styles on Students’ Academic Performance in Public Secondary Schools in Tarime Urban District, Mara-Tanzania
Authors: Musumi Kaitira , Mkulu Demetria Gerold
Published: December 2020

This study explores the instructional leadership styles on students' academic performance in public secondary schools in Tarime Urban District, Mara-Tanzania. The study identifies the contribution of instructional leadership styles on students' academic performance, find out the challenges encountered by heads of school on the practice of instructional leadership styles towards students' academic performance and to establish measures to be taken to enhance the instructional leadership styles to promote students' academic performance. The study adopted a mixed research approach and a convergent parallel design where qualitative and quantitative were used in a single study. The questionnaires and interview guide tools were used to collect data. A sample size of 90 respondents out of 151 populations was used. Qualitative data were categorized to get themes while quantitative data was analyzed using descriptive with the aid of Statistical Package for Social Science (SPSS) version 21. Instruments such as questionnaires were validated and reliability was checked and gives the correlation coefficient of 0.725 indicating that the instruments were valid and reliable to go to the field for data collection. Data were analyzed using descriptive and inferential statistics and the findings indicated that the use of instructional leadership style by well-defining school vision and goal to teachers, providing adequate instructional resources, supervising and monitoring them effectively can improve their job performance which enhances student academic performance. However, this study unveiled that instructional leadership style is hindered by several challenges including shortage of funds, poor school infrastructures, shortage of teaching and learning resources and students and teachers truancy. The study concluded that the government should provide in-service training to school heads to improve their leadership skills especially on instructional leadership style, also ensure a conducive working environment including infrastructures and teaching and learning materials.
Building the Picture Behind a Dataset
Authors: Madden Frances , Ashton Jan , Cope Jez
Published: December 2020

As part of the European Commission funded FREYA project The British Library wanted to explore the possibility of developing provenance information in datasets derived from the British Libraryâ€™s collections, the data.bl.uk collection. Provenance information is defined in this context as â€˜information relating to the origin, source and curation of the datasetsâ€™. Provenance information is also identified within the FAIR principles as an important aspect of being able to reuse and understand research datasets. According to the FAIR principles, the aim is to understand how to cite and acknowledge the dataset as well as understanding how the dataset was created and has been processed. There is also reference to the importance of this metadata being machine readable. By enhancing the metadata of these datasets with additional persistent identifiers and metadata a fuller picture of the datasets and their content could be understood. This also adds to the veracity and understanding the dataset by end users of data.bl.uk.
Data Sources and Persistent Identifiers in the Open Science Research Graph of OpenAIRE
Authors: Schirrwagen Jochen , Bardi Alessia , Czerniak Andreas , Loehden Aenne , Rettberg Najla , Mertens Mike , Manghi Paolo
Published: December 2020

In this article, we give an overview of the data source typologies used in OpenAIRE and provide an outline on the role of persistent identifiers in the aggregation, curation and provision workflows that lead to the generation of the Research Graph in OpenAIRE.
International Scientific Conference “Opera in Musical Theatre: History and Present Time” (Moscow, November 11–15, 2019)
Authors: Susidko Irina
Published: December 2020

The paper is dedicated to the findings of the International Scientific Conference “Opera in Musical Theatre: History and Present Time”, held by the Gnesins Russian Academy of Music and the State Institute for Art Studies. The conference is dedicated to 75th anniversary of the establishment of both schools. Researchers from major scientific institutions and schools of 16 world countries (Russia, Austria, UK, Germany, Greece, Spain, Italy, Kazakhstan, China, Lithuania, Mexico, Poland, USA, Thailand, Ukraine and Croatia) took part in this global project.

The paper analyses the issues of the proceedings, indicates the preferred trends and approaches in the modern study of opera art, such as studying opera in various contexts, pursuing historical accuracy, historical re-enactment and others. It also suggests ways of further development of science in studying musical theatre.
The 8th International Research-to-Practice Conference “Current Aspects of Air Transport Development” (AVIATRANS-2019), timed to coincide with the 50th anniversary of the establishment of Rostov affiliated branch, Moscow State Technical University of Civil Aviation (Rostov-on-Don, June 21–23, 2019)
Authors: Akopov Grigoriy
Published: December 2020

The 8th International Research-to-Practice Conference “Current Aspects of Air Transport Development” was held in Rostov-on-Don. About 300 participants from more than 50 entities from Russia and several foreign countries attended the conference. They discussed numerous relevant matters of civil aviation development: issues of management and safety in air transport, current aspects of implementation of communication technologies in Russia and worldwide, the strategy of cooperation between CIS countries and China in the development of passenger air transportation, and others. The domestic and international researchers presented their studies findings. A collection of papers with over 1000 pages in two volumes, as well as a joint scientific monograph were issued as a result of the conference.
COVID-19: Understanding the Pandemic Emergence, Impact and Infection Prevalence Worldwide
Authors: Dey Priyadarshini , Vaijayanthimala S. , Dalvi Vivek S. , Jain Ashu , Gola Deepak , Bajpai Medha , Bharti Randhir K. , Chauhan Nitin
Published: December 2020

Coronavirus disease (COVID-19) has showed high transmission across the continents due to Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-CoV-2) with total infected cases of around ~ 44 million people. This communicable virus that initiated from the Wuhan city of China in the month of December 2020 has now spread to 189 different countries with 1.1 million fatalities worldwide (till 28 Oct, 2020). The World Health Organization (WHO) declared this outbreak as Public Health Emergency of International Concern in January, 2020. The infection spreads mainly due to contact with infected droplets or fomites, highlighting flu like symptoms initially, which may further progress into severe pneumonia and respiratory failure, often observed in elderly patients with prehistory of other diseases. The diagnosis is based on detection of viral antigen, human antibody and viral gene (RT-PCR). Further, various other diagnostic tools including X-ray, CT-scan are used for imaging purpose, recently artificial intelligence based imaging (contactless scanning) gained popularity. Generally testing of existing drugs (repurposing) and development of new molecules are the main strategies adopted by researchers. However, as per initial findings, various drugs, monoclonal antibody and plasma therapy were found to show effectiveness against COVID-19. Further, many vaccine candidates have entered or will soon enter phase III clinical testing. This disease has further challenged the global economy. Thus, this review uniquely compares the strategies adopted by developed and developing countries worldwide including protective measures like lockdown, continuous testing, utilizing latest tools (artificial intelligence) in curbing this infection spread.
Can COVID-19 Be Transmitted Sexually by Semen?
Authors: Taha Ahmed E.
Published: December 2020

Information on the severe acute respiratory syndrome-coronavirus-2 (SARS-CoV-2) has amplified quickly since its spread; however, many issues remain unclear. SARS-CoV-2 is mainly transmitted through respiratory secretions. However, the potential for SARS-CoV-2 sexual transmission by semen is worthy of study. The cell-receptors of SARS-CoV-2, the angiotensin-converting enzyme-2 receptors, are highly expressed in human testis and may enable this virus to cause testicular tissue damage with bad effect on male fertility. SARS-CoV-2 presentation ranges from asymptomatic carriage to acute respiratory distress and fatal pneumonia, and elderly persons with underlying comorbidities usually suffer from a severe clinical picture. Asymptomatic individuals can spread the virus through their respiratory secretions and possibly through sexual transmission. SARS-CoV-2 can persist viable if cryopreserved in semen samples in sperm cryobankes. As far as I know, there is a gap in knowledge about SARS-CoV-2 transmission through semen, indicating the need for further research. This review attempts to understand the SARS-CoV-2 sexual transmission by semen. One recent study confirmed the theoretical risk of SARS-CoV-2 transmission by semen, but few studies negate this theory. Given that, an increasing number of asymptomatic and reactivated SARS-CoV-2 cases are being reported, attention to semen safety and SARS-CoV-2 transmission should be considered particularly in high-risk areas, to ensure the safety of male gametes for artificial reproduction and the general public. Avoiding cryopreservation of male gametes, condom use or even abstinence might be of paramount importance for these persons.
COVID-19 in South Korea: Focusing on Club Infections
Authors: Shim Moon-Jung , Kang Yun-Jung
Published: December 2020

On January 20, 2020, the first COVID-19 case in Korea was confirmed. The Korean government handled the situation by early identification and quarantine along with transparent disclosure of information, while announcing a National Guideline to practice aggressive prevention policies. Consequently, the government changed its social distancing policy into a casual-distancing-in-daily-lives policy. However, on the very day when the new policy started, a new male patient who had visited a club in Itaewon, Seoul, was confirmed to be the start of a club infection. This incident gave rise to three possible problems for Korea. Firstly, asymptomatic infection, which means a patient can spread the virus having only slight or no symptoms at all, can increase. Secondly, the fourth infection occurred due to local transmission by confirmed cases related to the club infection. Thirdly, the change in awareness among the 20s and 30s age groups is required to minimize the COVID-19 situation. As there is no established cure for COVID-19, both the government and the public should exert care.
Technical Parameters Affecting the Spray Drying of Roselle (Hibiscus Sabdariffa) Powder
Authors: Minh Nguyen Phuoc
Published: December 2020

Roselle (Hibiscus sabdariffa) was a member of Malvaceae family. Its calyxes had bright red color due to presence of anthocyanin with an excellent antioxidant property. Raw roselle (Hibiscus sabdariffa L.) calyx was highly perishable due to its high moisture content. In order to diversify products from this plant, this research evaluated the possibility of spray drying for roselle extract into dried powder for long-term consumption. We focused on the effect of sugar alcohols (mannitol, sorbitol, isomalt, xylitol, erythritol) at 8%, carrier agents (maltodextrin, gum arabic, glutinous starch, whey protein concentrate, carboxymethyl cellulose) at 12%, operating parameters of spray dryer (inlet/outlet air temperature, feed rate) on physicochemical quality (bulk density, solubility, total phenolic content, total flavonoid content, anthocyanin content) of rosselle powder. Results showed that the optimal spray drying variables for rosselle powder should be 8% isomalt, 12% whey protein concentrate, inlet/ outlet air temperature 140/85oC/oC, feed rate 12 ml/min. Based on these optimal conditions, the highest physicochemical attributes of the dried roselle calyx powder would be obtained.
Green Synthesis and Antimicrobial Potential of Silver/Gold Nanoparticles Functionalized with Debregeasia salicifolia D. Don
Authors: Bawazeer Sami , Rauf Abdur , Rahman Khaliq Ur , Ali Jawad , Uddin Ghias , Begum Fatima , Mubarak Mohammad S. , Ramadan Mohamed Fawzy
Published: December 2020

The aim of the current study was to detect various secondary metabolites in the extract of Debregeasia salicifolia, and to synthesize stable silver/gold nanoparticles (Ag/AuNPs) from D. salicifolia methanol crude extract. The antioxidant, antibacterial, and antifungal activities of the methanol crude extract, various isolated fractions, and the synthesized nanoparticles were evaluated. Phytochemical analyses of the methanol extract/fractions indicated the presence of tannins, saponins, flavonoids, steroids, terpenoids, coumarins, emodins, and soluble starch. Gold and silver nanoparticles have been subsequently synthesized from the methanol crude extract by green synthesis, and characterized by UV and IR spectroscopic techniques. Size of the particles was determined with the aid of an atomic force microscope (AFM). The results revealed that the size of AuNPs was 5-100 nm, and that of AgNPs was in the range 5-100 nm. Bioactivity screening revealed that chloroform and n-hexane fractions exhibited significant 2,2-diphenyl-1-picrylhydrazyl (DPPH·) radical scavenging potential against quercetin. Additionally, the extract/fractions and AuNPs were also subjected to antimicrobial activity screening against a number of strains of microbes. Among extracts, n-hexane fraction showed good antifungal activity as compared to other fractions, whereas in the case of anti-bacterial activity, extract and fractions were active against Gram positive and Gram negative bacterial strain. AuNPs were exhibited moderate activity against all tested bacterial strains.
Prevalence of Bacteria in Primary Schools
Authors: F. El-Kased Reham , Gamaleldin Noha M.
Published: December 2020

Pathogenic microorganisms are serious threats in schools, where contact with many microorganisms occur frequently throughout the school day. Classrooms are considered an optimal place for contact between microorganisms and young children. The aim of the current study was to study the prevalence of bacteria isolated in samples from different sites in primary schools and to show whether schools are sanitized and clean for children or it is just the core reason for their illness. The study was done in a highly standard private school and a public school in order to study the effect of variance in the social classes on the cleanliness of the schools. Different colonies were separated and identified by staining techniques and biochemical tests. Thirteen different types of bacteria with different amounts were isolated from 176 samples collected from different surfaces. It was found that the number of bacteria in public school is higher than that of the private school. The distribution of bacterial strains isolated from the two schools averaged 37.1% for Staphylococcus sp. followed by 11.3% for Enterobacter sp. and then 7.3%, 7.1% and 6.3% for Yersinia sp. Streptococcus sp. and Micrococcus sp. respectively. Other strains ranged between 5.9% to 1.5%. Bacterial isolates were tested for their susceptibility by well diffusion test against three commercial disinfectants commonly used for surface and hand cleaning in schools, namely; Clorox, Renol and Dettol. The highest percentage of resistance was seen against Renol (50%) followed by Dettol (38%) and was identified to be Escherichia coli, while least resistance occurring among all isolates was noticed against Clorox (18%). Children in private and public schools are at high risk of catching serious bacterial infections and they are surrounded by a cram of microorganisms. The current research shows that new ways must be developed to improve our schools’ hygiene to make it a healthier and safer place to learn in.
Technique of Tooth Relieving for Gear Cutting Hobs
Authors: Sandler A. I.
Published: December 2020

Затылованная поверхность боковой стороны зубьев червячной фрезы - это аналог винтовой поверхности с углом подъема, увеличенным для одной и уменьшенным для другой стороны зуба относительно угла подъема производящей поверхности. Основные недостатки действующей технологии затылования: искажение профиля производящей поверхности в ходе переточек фрез для восстановления режущих свойств инструмента, зависимость наладки процесса затылования от диаметра шлифовального круга и высокая трудоемкость достижения требуемой точности профиля производящей рейки фрезы.Предложено изготавливать боковые поверхности зубьев фрезы как эвольвентные, так как теоретически точная эвольвентная винтовая поверхность может быть получена шлифованием при параллельных осях шлифовального круга c прямолинейным профилем и шлифуемого изделия. Приведен порядок расчета параметров фрезы и процесса затылования. Разработана методика расчета органической погрешности получаемого профиля производящей рейки фрезы. Определен основной параметр предварительного затылования фрезы – спад затылка зуба на угловом шаге фрезы в зависимости от длины шлифованной части зуба и припуска на шлифование. Исследованы и определены параметры фрезы и процесса затылования, исключающие недопрофилирование затылуемых поверхностей. Приведены примеры расчетов применительно к изготовлению прецизионных фрез класса точности ААА.
Development of a Multifunctional Aggregate Machine for Education and Business
Authors: Repko V. N. , Domnina K. I. , Karakulov M. N. , Surnin D. A.
Published: December 2020

Проблема обеспечения безопасности и непрерывности машиностроительных производств является особенно актуальной в современных условиях изменчивости мира. Неповоротное массивное оборудование постепенно заменяется многозадачными станками, позволяющими быстро развернуть выпуск изделий соответствующего качества с минимальными затратами.Представлены основные этапы разработки нового многофункционального агрегатного станка. Исследование станка проведено с помощью методов системного анализа, построена принципиальная схема с описанием взаимосвязи всех элементов. Станок по конструкции является агрегатным, поэтому большинство деталей и узлов станка стандартизированы, что упрощает его конструирование, проектирование и производство, что не влияет на качество обрабатываемых на станке деталей. На структурной схеме станок представляет собой техническую систему, состоящую из подсистем, – корпуса, оснастки, системы механизации, смазывающе-охлаждающей системы, системы автоматизации, электрообеспечения, которые, в свою очередь, состоят из более мелких элементов.Универсальность разрабатываемого станка заключается в различных схемах сборки. Обеспечивается это конструкцией корпуса, который состоит из одинаковых по конфигурации и размерам блоков. Благодаря этой особенности, корпус можно легко собирать, меняя относительное положение блоков. Так, в зависимости от схемы сборки корпуса можно собирать различные типы станков. Представлены возможные способы сборки и типы собираемых станков для каждой схемы. В зависимости от сферы применения (образование или бизнес) станок будет иметь различные технические и конструктивные параметры, количество схем сборок, показатели производительности, точности, а также различные модификации в автоматизации и системе электрообеспечения.
“Desencantarse del estado”: confrontando los límites del multiculturalismo neoliberal en Colombia
Authors: Dest Anthony
Published: December 2020

La adopción de las políticas multiculturales por parte del estado colombiano en la década de los noventa tuvo implicaciones de largo alcance para las luchas de comunidades negras e indígenas por la autodeterminación y la autonomía. En un contexto de violencia generalizada asociada con el conflicto armado, las políticas multiculturales parecían ofrecer una aparente protección. Sin embargo, después de casi tres décadas de reformas multiculturales, las comunidades negras e indígenas continúan enfrentando la violencia y el despojo a manos del estado, las corporaciones multinacionales, los narcotraficantes y otros grupos armados. Este artículo explora la dialéctica de autonomía/inclusión con el fin de entender por qué algunos movimientos sociales negros e indígenas se están apartando de las políticas del reconocimiento estatal.
Arqueología e historia de africanos y afrodescendientes en el Cauca, Colombia
Authors: Patiño Castaño Diógenes , Hernández Martha C.
Published: December 2020

Este artículo de arqueología histórica analiza evidencias del pasado e historia de los africanos esclavizados y sus descendientes en Popayán y norte del Cauca, durante los siglos XVIII y XIX. Utilizando datos de archivo, investigación de sitios arqueológicos, cultura material y oralidad, el estudio explora las relaciones sociales entre amos y esclavos para dar cuenta de sus asentamientos, áreas de labores domésticas, agrícolas y mineras en el campo. Los datos conducen al análisis de la cotidianidad, la servidumbre, la ancestralidad, la resistencia y la emancipación afrocolombianas, todos temas escasamente investigados en Colombia, especialmente en la región suroccidental. Al ofrecer un panorama inicial sobre estos asuntos, la investigación amplía y fortalece los estudios afrodiaspóricos a través de la historia, las memorias, las tradiciones y los patrimonios en nuestra sociedad pluriétnica colombiana.
Analisis Rekayasa Sub Sistem Penujang Di Salah Satu Sentra Pertanaman Kakao, Kecamatan Kumpeh Ilir, Kabupaten Muaro Jambi
Authors: Suharyon Suharyon
Published: December 2020

Dalam upaya mengembangkan sistem usahatani dan kelembagaan  tanaman kakao di suatu wilayah diperlukan pendekatan hubungan antara kelompok tani dengan kelembagaan lain yang mendukung. Dengan terjalinnya kerja sama kelembagaan yang baik, masalah yang dihadapi petani bisa diserahkan sekaligus diharapkan terjadi difusi teknologi melalui lembaga atau institusi terkait di daerah. Dengan memberdayakan kelembagaan yang mendukung adopsi teknologi yang diberikan kepada kelompok tani FSA (Farming System Analysis) dalam bentuk kerja sama akan membantu memecahkan masalah-masalah yang dihadapi petani. Berdasarkan pemikiran tersebut, maka perlu dilakukan kajian analisis rekayasa kelembagaan penunjang teknologi usahatani tanaman kakao. Kegiatan ini dilaksanakan di desa Betung, Kecamatan Kumpeh Ilir Kabupaten Muaro Jambi, dengan tujuan menemukan perlakuan/intervensi yang efektif dan meningkatkan pemberdayaan, serta kerja sama kelembagaan guna menjamin adopsi teknologi sistem usahatani tanaman kakao yang berkelanjutan. Pendekatan yang digunakan adalah SWOT ANALYSIS yaitu identifikasi kekuatan, kelemahan, peluang, dan ancaman. Metodologi yang digunakan dalam kegiatan ini dengan menerapkan metode Participatory Research Appraisal (PRA), untuk menggali masalah yang dihadapi oleh petani tanaman kakao. Alternatif intervensi yaitu dibentuknya beberapa kelompok tani atau dapat disebut Gapoktan yang diberi nama Usaha Bersama, diskusi singkat tentang sistem usahatani tanaman kakao , melihat kebutuhan mendesak kelompok tani, dan menghubungkannya dengan lembaga pendukung. Bedasarkan hasil PRA maka permasalahan yang diperioritaskan adalah (1) Bibit kakao yang berkualitas yang masih kurang sampai kepetani, (2), modal, () pupuk bersubsidi,  (4) pertemuan antara kelompok. dan (5) bimbingan teknis untuk tanaman kakao. Tujuan menemukan perlakuan/intervensi yang efektif dan meningkatkan pemberdayaan, serta kerja sama kelembagaan guna menjamin adopsi teknologi sistem usahatani tanaman kakao yang berkelanjutan.
Peran Mikroorganisme Lokal Rebung Bambu Terhadap Pertumbuhan Dan Kandungan Protein Tanaman Kedelai
Authors: Soverda Nerty , Evita Evita
Published: December 2020

Kedelai (Glycine Max L. Merrill) merupakan tanaman pangan ketiga setelah padi dan jagung di Indonesia. Umumnya, kedelai dimanfaatkan sebagai bahan makanan manusia, pakan ternak maupun bahan baku industri. Namun, terdapat beberapa masalah dalam pengelolaan penanamannya, salah satunya adalah kondisi lahan yang tidak optimal untuk mendukung pertumbuhan kedelai, terutama di Jambi. Hal ini karena lahan di jambi umumnya didominasi oleh tanah ultisol yang tingkat kesuburan yang rendah. Tujuan khusus dari penelitian yang direncanakan adalah mempelajari peran mol rebung bambu terhadap pertumbuhan dan kandungan protein tanaman kedelai.  Penelitan akan dilaksanakan dengan menggunakan Rancangan Acak Kelompok (RAK) dengan satu faktor yaitu pemberian berbagai konsentrasi MOL rebung bambu dengan 6 taraf perlakuan, yaitu : m0 : tanpa perlakuan Mol rebung bambu, m1  50  ml/L air,  m2    : 75  ml/L air,  m3 : 100 ml/L air,  m4 : 125 ml/L air dan m5: 150 ml/L air. Variabel yang diamati tinggi tanaman, jumlah polong berisi per tanaman, bobot biji per tanaman, bobot 100 biji, hasil per plot dan kandungan protein kedelai. Berdasarkan hasil pengamatan maka dapat disimpulkan bahwa Pemberian MOL rebung bambu dapat memberikan pengaruh yang nyata terhadap bobot 100 biji pertanaman tetapi tidak memberikan pengaruh pada  variabel lainnya, akan tetapi pemberian MOL memiliki kecendrungan untuk meningkatkan pertumbuhan dan hasil tanaman kedelai. Disamping itu didapat bahwa pemberian MOL rebung bambu dengan konsentrasi 75  ml/L air merupakan konsentrasi terbaik dalam upaya  meningkatkan hasil tanaman kedelai.
Pengaruh Sistem Informasi Sumber Daya Manusia Terhadap Kinerja Pada Pegawai PT Raudah Utama Cianjur
Authors: Rosadi Andri Asoka Sidantara , Purnomo Yudiyanto Joko
Published: December 2020

PT Raudah Utama Cianjur adalah sebuah travel agent  yang melayani perjalanan dalam dan luar negeri, yang mana PT Raudah Utama Cianjur ini membuka kantor Haji, Umroh, Tour dan Tiket di Kota Cianjur,  untuk memenuhi dan memberikan pilihan kepada masyarakat Cianjur dan sekitarnya dalam kebutuhan perjalanan Dinas serta lainnya, dengan konsep dasar melayani dan memuaskan para konsumen yang akan menggunakan jasa travel agent ini. Fenomena yang terjadi pada PT. Raudhah Utama Cianjur adalah . 1). Pelaksanaan sistem informasi SDM telah diaplikasikan dengan baik. 2). Pegawai sudah memahami tata laksana peraturan kerja dengan sistem digital yang telah diberlakukan oleh perusahaan, sehingga kedua belah pihak baik pegawai dan perusahaan mendapatkan manfaat positif dari Sistem Informasi Manajemen Sumber daya Manusia. 3). Pencapaian target rata-rata mencapai hasil yang optimal meskipun dengan beberapa penyimpangan yang tidak terukur menyebabkan target kerja tidak tercapai. Metode penelitian yang digunakan dalam penelitian ini adalah metode deskriptif dan metode asosiatif.Dalam penelitian ini yang menjadi unit analisis adalah individu, yaitu pegawai PT. Raudah Utama Cianjur. Populasi dari penelitian ini adalah pegawai yang berjumlah 30 Orang. Teknik penarikan sampel dalam penelitian ini menggunakan sensus atau sampling jenuh. metode pengumpulan data ini terdiri dari wawnncara, kuesioner dan observasi.