bluuebunny/crossref_metadata_2025 huggingface dataset:
Risk Factors of Nutritional Rickets among Children Under-five Years of Age
Authors: Mumtaz Ahmed , Akram Jehanzeb , Nazir Nauman , Hasan Abul Hadi , Ali Ramsha , Basharat Ayesha , Tauqeer Alizay , Warraich Jowaria Imtiaz , Warraich Bismah Imtiaz , Khan Tayyab Mumtaz
Published: August 2022

Purpose: Rickets is one of the most common diseases of childhood and is more prevalent in the developing countries. It affects the rapid growth phase of the children. Rickets is affected by different factors which are understudied in Pakistan. This study aimed to identify the risk factors that lead to rickets in children under five years of age among diagnosed cases of the nutritional rickets. This may cause reduction in the incidence of the rickets by prevention of the factors that lead to rickets in the children.

Methodology: This descriptive cross-sectional study was performed in the pediatric outpatients department of the Holy Family Hospital, Rawalpindi, Pakistan for 1 year from June 2021 to June 2022 on 132 diagnosed cases of the nutritional rickets. Patients were enrolled via non- probability convenient sampling technique and a set developed inclusion and exclusion criteria. Data was collected through self-structured questionnaire after taking informed consent. Data analysis was done through SPSS version 25.

Findings: Nutritional rickets was more common among children who had, age range from 1 to 3 years  group (64.39%), male gender (68.94%), lower socioeconomic status (55.30%), exclusive breastfeeding (70.45%), cow’s milk use (71.96%), no sunlight exposure (66.67%), shorter duration of sunlight exposure (57.58%) fully dressed during sunlight exposure (40.90%), no oil massage during sunlight exposure (63.30%), poor nutritional status (72.73%), and mothers with poor nutritional status (69.70%). In short, age group with range 1 to 3 years, male gender, lower socioeconomic status, exclusive breastfeeding, cow’s milk use, no sunlight exposure, shorter duration of sunlight exposure, fully dressed during sunlight exposure, no oil massage during sunlight exposure, child poor nutritional status, and mothers with poor nutritional status, all raise the of the nutritional rickets in children of under five years age.

Recommendations: Supplements should be added in the diet of children during breastfeeding. Also, there should be adequate sunlight exposure of children. Finally, malnutrition of both children and mothers should be treated.
Preparation for death and dying among pre-retirement civil servants in Nigeria: challenges for counselling
Authors: Oyediran Ayotunde O. , Omotosho Joshua A. , Nyarko-Sampson Eric
Published: August 2022

This nationwide study was done with the main purpose of finding out the level of preparation for death and dying among pre-retirement civil servants in Nigeria. A secondary purpose was to determine the influence of age on such preparation. The instrument used for data collection was tagged "Preparation for Death and Dying Questionnaire" (PDDQ). Its validity and reliability were duly established through the help of experts. The relevant data were collected through the employment of research assistants. The findings showed that the respondents were ill-prepared for death and dying. Also, significant age differences were observed in retiring civil servants' preparation for death and dying; younger pre-retirement civil servants hadmade less preparation for death and dying than their older counterparts. The critical challenges that these findings pose for counselling practice in Nigeria were then succinctly highlighted.
Using phonics as a method of teaching reading in basic schools
Authors: Abdul-Razak Inusah
Published: August 2022

This study examines the use of phonics as a method of teaching reading in basic schools within the framework of generative phonology proposed by Chomsky and Halle (1968) in the Sound Pattern of English (SPE) as discussed in Hawkins (1992).The study aims at describing the patterns of phonic sounds with the application of phonological rules. It describes naturally occurring phenomena (phonemes) without experimental manipulation. The data which is collected from some existing data onphonic teaching and learning and used in this paper are from both verbal and written sources. Participants selected include teachers (T), teacher-trainees (TT) and pupils (P). The study shows the relationship between phonic symbols and letters of thealphabet in English. It attempts to present consonants and vowels occurring in wordinitial, word-medial and word-final positions in English as the major sounds in the English language. Based on the synchronic data available, the paper hypothesizesthat the voiceless dental fricative /0/ and the voiced dental fricative /6/ are the difficult sounds that are not easily pronounced in English words by the LI learner in Ghana. The study, therefore, suggests that both teachers and teacher-trainees shouldhave some knowledge in phonic sounds, and that an introduction to phonetics and phonology should be considered as a course in the Colleges of Education.
Teachers’ efficacy beliefs in the implementation of senior high school economics curriculum
Authors: Yidana Mumuni Baba , Ntarmah Albert Henry
Published: August 2022

The purpose of this study was to assess the level of economics teachers’ efficacy beliefs in the implementation of Senior High School Economics curriculum. This study did not only assess the level of Economics teachers’ efficacy, beliefs, but also examined the differences in teacher efficacy beliefs across gender and professional qualifications. The study focused on Senior High School Economics teachers in the Western Region of Ghana. Descriptive survey design was used to determine the level of Economics teachers’ efficacy beliefs and the differences in teacher efficacy beliefs across gender and professional qualification. Simple random sampling was used to select 123 Economics teachers. The long form of Teacher Sense of Efficacy Scale (TSES) was used to collect the data and the data collected were analyzed using mean and standard deviation and T-test. The results showed that teachers have high efficacy beliefs in the implementation of Senior High School Economics curriculum. Again, there were no statistically significant differences in teacher efficacy level across gender and professional qualification. It was recommended that teachereducators, Ghana Education Service and school authorities should organize selfefficacy enhancement programmes for teachers so as to sustain or improve their efficacy beliefs.
Insects Have Defoliated My Tree—Now What’s Going to Happen?
Authors: Wargo Philip M.
Published: August 2022

The effects of defoliation are not dependent on defoliation alone but on a complex interaction of many factors. The major influencing factors of severity, frequency, and timing of defoliation, growing conditions, secondary organisms, and tree vigor are discussed. Some of the adverse effects of defoliation are described and recommendations for preventing or lessening these effects are given.
Wormhole solutions and energy conditions in f(R; T) gravity with exponential models
Authors:   Department of Physics, Zhejiang Normal University, Jinhua 321004, People's Republic of China, Mustafa G. , Shamir M. Farasat ,   National University of Computer and Emerging Sciences, Lahore Campus, Pakistan., Fazal Anum ,   National University of Computer and Emerging Sciences, Lahore Campus, Pakistan.
Published: August 2022

In the present article, we explore the new exact solutions of wormhole geometry by imposing the nonconstant Ricci scalar under inhomogeneous spacetime in the modified f(R; T) theory of gravity. We take two dissimilar models of f1(R) that are f1(R) = R 􀀀 (1 􀀀 e 􀀀R ) known as exponential gravity model and f1(R) = R 􀀀 tanh(R ) known as Tsujikawa model, where; are model parameters. We explore the feasible solutions for these models. Moreover, we discuss analytically and graphically the different properties of these models of wormholes by giving suitable values to the model parameters. We consider a specific shape functions i.e., b(r) = r0 log( r r0 + 1) and discuss the energy conditions for the above mentioned two models. Conclusively, we find that obtained wormhole solutions are physically acceptable with the considered exponential and Tsujikawa gravity models with or without the presence of exotic matter.
Ion temperature gradient mode linear and nonlinear structures in electron-ion plasma, with stationary charged dust grain
Authors:   Department of Physics, University of Malakand, 18000, Pakistan, Aziz K. , Zakir U. ,   Department of Physics, University of Malakand, 18000, Pakistan, Rahman A. ,   Department of Physics, Government Degree College, Swat, 18800, KP, Pakistan, Ali J. ,   Department of Physics, Government Degree College, Swat, 18800, KP, Pakistan, Haque Q. ,   Theoretical Plasma Physics Division PINSTECH, P.O. Nilore, Islamabad, 610101, Pakistan
Published: August 2022

Ion temperature gradient mode nonlinear structures are studied with stationary charged dust. The dynamical role here is played by heavy ions. The small amplitude limit influence of various plasma parameters shows that the phase velocity of the mode modifies the overall plasma dynamics. Further, from the solution of the model equations we obtain Kortweg-de-Vries (KdV) and Korteweg-de-Vries Burger (KdVB) like equations, the solution of which gives solitary and shock wave nonlinear structures. Numerical analysis of these nonlinear structures shows that dust number density and polarity have a substantial impact on these structures. The present observation may be beneficial in space and laboratory plasma investigations.
Exploitation of Labor as a Persistent Element in the People's Republic of China
Authors: ÇAKMAK Gülten
Published: August 2022

The study deals with the historical course of labor in the People's Republic of China. In this sense, it is aimed to address the problems and changes experienced by the working classes in the People's Republic of China, starting from 1949 until today. The main argument of the study is that between the 1949-1978 periods, which is expressed as the planned economy period, and the open economy period after 1978, the exposure of labor to exploitation continued. Although it is accepted that there are differences in the forms and levels of exploitation specific to the mentioned periods, it is aimed to state that the exploitation is permanent. The fact that China, which still defines itself as a socialist country and represents the working class, in practice has a system based on cheap labor and labor exploitation creates a serious contradiction. To support its main argument, the study will include work units called danwei, the concept of the iron rice bowl, the policy of the great leap forward, the hukou system (household registration system) and the impact of these issues on the workforce. It will also include the All China Federation of Trade Unions (ACFTU) and workers' actions.
The Effect Of Personalıty Types Of Local People In Tourıstıc Destınatıons On Sustaınable Consumptıon Behavıor
Authors: ÖZSEZGİN İlknur , BEKAR Aydan
Published: August 2022

Sustainability means meeting our own needs and wishes without compromising the needs of future generations, and having a conscious consumption habit. In addition to non-governmental organizations, local governments, governments, every individual living in the society has important duties for sustainable consumption. One of the factors affecting the sustainable consumption behaviors of individuals is personality traits. In this study, the effect of personality types of local people living in touristic destinations on sustainable consumption behavior was examined. In the study whose population consisted of the local people living in Bodrum, the five-factor personality types scale (extroverted, accommodating, self-controlled, neuroticism and openness to experience) developed by Costa and McCrae (1987) as a data collection tool was used by Doğan, Bulut, and Çımrın (2015). Sustainable consumption behavior scale developed by . The scale of sustainable consumption behavior consists of 4 factors: environmental awareness, non-necessary purchasing, savings, and reusability. Path Analysis was used to determine the effect of personality types on sustainable consumption behaviors. As a result of the analysis, it was determined that some personality types have a positive or negative significant effect on sustainable consumption behavior. In the light of the findings obtained, it is recommended to examine sustainable consumption behaviors according to the demographic characteristics of the participants, permanent or temporary residence and sustainable consumption motivations in future studies.
EL CONFLICTO EN EL AMAZONAS EN PERSPECTIVA HISTÓRICA
Authors: Lima Carla
Published: August 2022

La interacción entre cada sociedad con su entorno natural condensa una historia de interpretaciones, reflexiones, contrariedades, pretensiones de definiciones y caracterizaciones, así como de métodos de investigación donde el denominador común que se encuentra en el núcleo de estos aportes es la noción de conflicto. Autores como Leal, Soluri y Pádua (2018) aseguran que “los historiadores ambientales se esfuerzan no solo por introducir nuevas preguntas, actores y marcos explicativos, sino también por arrojar nueva luz sobre temas familiares como el surgimiento de los Estados-nación, las desigualdades sociales y el cambio tecnológico”. En este sentido, en la búsqueda por describir y analizar las interacciones entre el mundo social y natural los conflictos ambientales emergen dinamizando estos vínculos y potenciando las preocupaciones sobre el impacto humano en la naturaleza y las consecuencias que de ello se desprende.
RESEÑA DEL LIBRO DE MATÍAS EMILIANO CASAS (2018), LA TRADICIÓN EN DISPUTA. IGLESIA, FUERZASARMADAS Y EDUCADORES EN LA INVENCIÓN DE UNA “ARGENTINA GAUCHA”,1930-1965. ROSARIO, ARGENTINA: PROHISTORIAEDICIONES.
Authors: Villanueva Silvana
Published: August 2022

¿Por qué la tradición aparece ligada indefectiblemente al campo y al gaucho? Resulta este uno de los interrogantes iniciales en el recorrido que Matías Emiliano Casas realiza en su libro La tradición en disputa. Iglesia, Fuerzas Armadas y educadores en la invención de una “Argentina gaucha”, 1930-1965, para sumergirse en un profundo análisis del proceso de construcción de las tradiciones en la Argentina del siglo XX.
IMPACTOS ECONÓMICOS DE LA GESTIÓN DE LAS OBRAS DE
INFRAESTRUCTURA HÍDRICA EN LA CUENCA DE LA LAGUNA LA PICASA. REGIÓN PAMPEANA
ARGENTINA
Authors: Comellas Eduardo Alejandro , Duek Alicia Elena
Published: August 2022

La cuenca de La Picasa tiene un perfil agrícola destacado por cultivos de soja, maíz y trigo. En los últimos años ha sufrido un progresivo anegamiento, a pesar de contar con obras de infraestructura hídrica. El objetivo es determinar el perjuicio económico de una deficiente estrategia de gestión de estas obras y contrastarlo con los potenciales beneficios de una estrategia optimizada. Se trabaja con un escenario tendencial que asume una política de gestión laxa e inconexa, frente a otro optimizado que supone una administración coordinada y armónica de las obras de infraestructura hídrica. Los resultados del escenario tendencial estiman pérdidas potenciales de 82 millones de dólares (período 2018-2030), mientras que el escenario optimizado proyecta beneficios de 41 millones de dólares.
A Survey on Function Level Scheduler to Minimize the Cloud Provider Resource Cost in Serverless Cloud Computing
Authors: Marapaka Rama Raju  , Ramarao Gose  , S Vijaya Laxmi
Published: August 2022

Industry started providing the services in the form of function executions and charge the clients based on the execution time and not on the machine idle time. This change the paradigm change the way in which people started looking at cloud computing. In this paper we survey on many things which are not known to the user when they are using the platforms like AWS lambda, IBM Open Whisk and Microsoft Azure Funtions, Google cloud functions as the payment model. How the runtime is brought and saved back upon the policy of the service provider in Serverless cloud computing function as a service platforms.
Consideraciones sobre el escenario de la enseñanza del Español en Brasil según la visión del profesor Pedro Benítez Pérez
Authors: Lima Moreira Glauber , Eres Fernández Gretel , De Oliveira Pontes Valdecy
Published: August 2022

Entrevista
Weizen nachhaltig anbauen
Authors: Hofnagel Dagmar
Published: August 2022

Winsen/Aller. Die Sortenwahl muss bei der Produktion von Weizen zukünftig mehr Bedeutung bekommen. Allein die Bezahlung nach dem Proteingehalt kann den Forderungen nach Klima– und Gewässerschutz nicht mehr standhalten. Vier deutsche Institutionen machen Lösungsvorschläge.
„Wir wollen Teil der Lösung sein“
Authors: Dänzer Dieter
Published: August 2022

FRANKFURT a.M. Im Pflanzenbau schien der Einsatz von nicht-selektiven Herbiziden wie Glyphosat oder Deiquat als produktive und effiziente Lösung in Sikkationsanwendungen und bei der Saatbettvorbereitung nicht selten nötig. Das 2020 gegründete Start-up Crop.Zone hat sich zur Aufgabe gemacht, nachhaltige Alternativen zu chemischen Herbiziden auf den Markt zu bringen. Die agrarzeitung (az) traf den Gründer und CEO Dirk Vandenhirtz.
Bookshelf – A Document Categorization for Library using Text Mining
Authors: Petalver Carlo , Bandalan Roderick , Gabison Gregg Victor
Published: August 2022

Categorizing books and other archaic paper sources to a course reference or syllabus is a challenge in library science. The traditional way of categorization is manually done by professionals and the process of seeking and retrieving information can be frustrating. It needs intellectual tasks and conceptual analysis of a human effort to recognize similarities of items in determining the subject to the correct category. Unlike the traditional categorization process, the author implemented the concept of automatic document categorization for libraries using text mining. The project involves the creation of a web app and mobile app. This can be accomplished through the use of a supervised machine learning classification model using the Support Vector Machine algorithm that can predict the given category of data from the book or other archaic paper sources to the course syllabus they belong to.
Geograficidades concretas e digitais significando os lugares: O caso dos encontros de jogadores de Pokémon GO no Bairro do Recife, Recife/PE
Authors: Ramos Matheus Severo , Gomes Rodrigo Dutra
Published: August 2022

Com a premissa de fazer seus adeptos percorrem e vivenciarem espaços urbanos, o jogo Pokémon GO, lançado em 2016, surgiu como fenômeno global, e após início dos eventos mensais chamados de dias comunitários, impactos do jogo podem ter atingido uma dimensão ainda maior, comparado a repercussão inicial. Estes eventos, que objetivam reunir comunidades locais de jogadores de Pokémon GO para vivenciarem o jogo coletivamente, ocupando espaços urbanos, podem ter capacidade de estimular sensos de comunidade e vínculos afetivos entre os jogadores com os espaços. Neste sentido, observando experiências na cidade do Recife/PE, foi percebido que o Bairro do Recife é local recorrente de encontros dos jogadores, e consequentemente, um caso para se pensar sobre uma perspectiva humanista, partindo da ideia de que as atividades dos jogadores podem ser entendidas como geograficidades, significando o espaço vivenciado enquanto lugar. Assim, o objetivo deste trabalho foi compreender como a partir das geograficidades realizadas pelos jogadores de Pokémon GO, o Bairro do Recife é significado como lugar. Para isso, foi realizada revisão bibliográfica e documental acerca dos conceitos de geograficidade, lugar, ciberespaço, além da história do Bairro do Recife. Observações participantes também foram realizadas, objetivando compreender a ocorrência das vivências em questão. Além disso, através de diálogos com os jogadores se obteve elementos para entender práticas e seus significados. A partir deste trabalho, se espera contribuir para a geografia, sobretudo cultural, com as reflexões entorno de conceitos clássicos, como geograficidade e lugar, aplicados em fenômenos contemporâneos.
Avaliação dos impactos ambientais no entorno do açude Padre Ibiapina em Princesa Isabel-PB
Authors: Silva Dalva Damiana Estevam da , Xavier Rafael Albuquerque
Published: August 2022

As atividades antrópicas têm gerado inúmeros impactos ambientais, principalmente nos recursos hídricos, gerando poluição da água, tornando-a inapropriada para os diversos usos. Neste contexto, o objetivo desse trabalho é avaliar os impactos ambientais no entorno do açude Padre Ibiapina em Princesa Isabel-PB. A metodologia adotada foi o Protocolo de Avaliação Rápida de Rios – PAR também conhecida como Metodologia Macroscópica que visa verificar o grau de preservação de nascentes, sendo adaptada e aplicada no entorno do açude Padre Ibiapina. Foram adotados 4 pontos distintos no manancial que possibilitou a avaliação do índice de conservação, sendo classificados em razoável (C), ruim (D) e péssimo (E) de acordo com os parâmetros identificados em campo. Os resultados analisados evidenciaram que a maioria dos pontos/trechos encontra-se degradados, com resíduos sólidos, efluentes domésticos, utilização por humanos e animais, proximidade com residências e falta de proteção das margens. Portanto, as atividades antrópicas (agricultura, pecuária, expansão urbana) aliadas à falta de políticas públicas eficazes fragilizam o reservatório reduzindo sua capacidade de armazenamento.
Densidade do banco de sementes no solo em uma área de Caatinga no Semiárido Paraibano
Authors: Pinheiro Maria Alice De Melo , Sousa Dayse Freitas Freitas de , Lacerda Alecksandra Vieira de
Published: August 2022

O banco de sementes é constituído por sementes vivas depositados no solo ou presentes na sua superfície, em um determinado sistema. O estudo do banco de sementes se destaca devido a sua importância no processo de regeneração natural, recuperação de áreas degradadas e conservação da vegetação em determinado bioma. Nesse sentido, objetivou-se no presente estudo avaliar a densidade do banco de sementes no solo e sua variabilidade em uma área de Caatinga no Cariri Ocidental paraibano. O estudo foi desenvolvido no Espaço Experimental Reservado para Estudos de Ecologia e Dinâmica da Caatinga – Área I do Laboratório de Ecologia e Botânica – LAEB/CDSA/UFCG (7°39’38.8’’ S e 36°53’42.4’’ W; 538 m de altitude). Considerando as 96 parcelas de 10 x 10m dispostas na Área Experimental, foram definidas 48 parcelas para o presente estudo. A coleta do solo foi realizada no início do período seco, com o auxílio de um gabarito de ferro medindo 0,5 x 0,5 m (0,25 m²) com 5,0 cm de profundidade. A densidade total foi de 168 sementes/m2 com variações espacial e temporal ao longo dos dez meses de análise. O baixo quantitativo de sementes encontrado, pode estar associado ao baixo índice pluviométrico decorrente do período de estudo, influenciando a recomposição do banco de sementes na área estudada. Enquanto, foi verificado que a distribuição espacial das sementes no solo variou significativamente nas 48 amostras de solo coletada. Portanto, os dados direcionam importantes contribuições para o entendimento da composição e funções ecológicas executadas pelo banco de sementes em áreas de Caatinga.
Caracterização morfoestrutural e morfotectônica do relevo do extremo oeste de Santa Catarina – Planalto das Araucárias - Sul do Brasil
Authors: Lima Jacson Gosman Gomes de , Biffi Vitor Hugo Rosa
Published: August 2022

Visando entender a influência morfoestrutural e morfotectônica na evolução do relevo do extremo oeste catarinense a partir de imagem de radar (SRTM-30M) foram interpretados lineamentos geomorfológicos, correlacionados com falhas/fraturas e falhas inferidas. Assim como, elaborados perfis topográficos sobre os quais foram plotadas as formações geológicas e os lineamentos estruturais (falhas/fraturas e falhas inferidas). Essa análise mostrou que os trends NW foram mais importantes para a geomorfologia regional, principalmente, para o arranjo da rede de drenagem. Nos perfis topográficos percebeu-se a boa correlação dos fundos de vale mais dissecados com os lineamentos estruturais. Além disso essa análise mostra que os derrames basálticos têm papel importante na estruturação do relevo, condicionando em muitos casos rupturas e patamares topográficos.
A formação de professores de geografia na modalidade a distância em Pernambuco: em busca de uma formação ativa e tecnológica
Authors: Santos Mateus Ferreira , Santos Francisco Kennedy Silva dos
Published: August 2022

Este artigo apresenta uma reflexão sobre as necessidades formativas referentes ao trabalho com as tecnologias digitais nos cursos de formação de professores de Geografia a Distância. Seu objetivo foi mapear e investigar os cursos de Geografia EAD ofertados pelas instituições públicas de Pernambuco, averiguando se os Projetos Pedagógicos dos Cursos têm apresentado componentes curriculares que abordem a tematização sobre o Ensino a Distância e as tecnologias digitais no campo formativo. Utilizando a pesquisa bibliográfica e documental, foram identificadas duas instituições com cenários distintos, demostrando a necessidade de adequações curriculares e de valorização dos saberes possuídos pelos docentes e discentes do curso, os quais poderão influenciar nos contextos de mudanças dos alunos da Educação Básica, principalmente na efetivação de políticas de inclusão digital do estado.
Decolonising South African Agriculture – Bringing Dignity Back to Small-Scale Farming
Authors: Davis Jason
Published: August 2022

Decolonisation should include not only political independence, but also the return of factors of production to the formerly colonised people so that they can use them to participate meaningfully in the economy, facilitating their economic emancipation from former colonial rulers. This not only involves putting the factors of production back into the hands of the colonised but also empowering them to generate wealth. Hence, the re-balancing of the agricultural landscape to actively include small-scale agriculture is part of the decolonisation process. Returning viability and dignity to small-scale farming entails reconnecting people to the land. Therefore, African investments in agriculture need to be focused on small-scale farming so that income inequality and poverty can be alleviated. The paper proposes that the promotion of small-scale agriculture change achieves both the objectives of reversing the impact of colonialism and restoring dignity to Black farming, as well as providing quality employment within local communities. The paper does not suggest that every farm must be small-scale, but that every small-scale farm be given an equal opportunity to produce and contribute to the economy as these farms can provide business opportunities for marginalised groups, namely the youth and women. Hence, the question remains - Where does one acquire the resources and expertise to kick-start the recalibrating of agricultural production on a small-scale? The answer lies in a mixture of finance and business skills from firms through Corporate Social Investment that creates partnerships, both public and private, that sow the seeds of small-scale success.
Implementasi Media Pohon Literasi untuk Meningkatkan Literasi Sains Murid pada Mata Pelajaran IPA
Authors: Dewi Lusiana , Jumini Sri , Prasetya Adi Nugroho
Published: August 2022

Rendahnya literasi sains di Indonesia memperlihatkan bahwa murid belum memahami konsep, proses, dan pengaplikasian pengetahuan sains dalam kehidupan. Hal tersebut dapat diatasi dengan penerapan alat peraga di dalam kegiatan pembelajaran (pohon literasi). Oleh karena itu, penelitian ini dilakukan dengan tujuan untuk mengetahui adanya kenaikan literasi sains murid dengan menerapkan media pohon literasi pada mata pelajaran IPA. Penelitian ini merupakan penelitian eksperimen dengan desain true experimental design menggunakan pretest-postest control group design. Pemilihan sampel dalam penelitian ini menggunakan teknik cluster random sampling, mengambil sampel 64 murid yang dibagi ke dalam kelompok eksperimen dan kelompok kontrol. Hasil dari penelitian memperlihatkan rerata uji N-Gain di kelompok eksperimen: 0.6 dan kelompok kontrol 0.4. Hasil dari uji statistik memperlihatkan thitung > ttabel yang berarti ada perbedaan signifikan antara kelompok kontrol dan eksperimen. Penelitian menyimpulkan literasi sains kelompok eksperimen dengan menerapkan media pohon literasi lebih unggul daripada literasi sains di kelompok kontrol dengan menerapkan media konvensional sehingga penerapan media pohon literasi ke dalam kegiatan pembelajaran dapat menaikkan literasi sains murid pada pelajaran IPA.
ANALISIS SISTEM DISTRIBUSI UAP DARI WATER TUBE BOILER DENGAN KAPASITAS 45 TON/JAM
Authors: Rismawati D. , Ibrahim Husin , Sutrisno Joko
Published: August 2022

Sistem distribusi uap sangat berpengaruh dalam proses produksi di Pabrik Kelapa Sawit (PKS) sehingga penting untuk mengetahui kapasitas uap pada proses pengolahan kelapa sawit dan kapasitas uap lainnya di PKS. Alat-alat yang berhubungan dengan sistem distribusi uap yaitu boiler, turbin uap, Back Pressure Vessel (BPV) dan Pressure Reducing Valve (PRV). Boiler yang akan dianalisis kapasitas uap dan efisiensi adalah water tube boiler berbahan bakar cangkang dan tandan kosong sawit dengan kapasitas 45 ton/jam di PT Multimas Nabati Asahan. Perhitungan kapasitas uap berdasarkan desain pabrik dan efisiensi boiler dengan menggunakan metode langsung dengan pertimbangan ketersediaan instrumen ukur untuk memperoleh data yang akurat dan keterbatasan waktu dalam mengumpulkan data. Setelah dilakukan analisis data diperoleh rugi-rugi kapasitas uap dengan membandingkan hasil analisis teoritis dengan data aktual di lapangan sebesar 299,6 ton/hari, salah satu yang mempengaruhi rugi-rugi uap yaitu menurunnya efisiensi boiler, dimana diperoleh efisiensi boiler sebesar 48,61% yang berdampak pada berkurangnnya jumlah produksi uap yang dibutuhkan dalam proses produksi dan pengolahan kelapa sawit di PT Multimas Nabati Asahan.
TEKNOLOGI BODY DRONE DENGAN MENGGUNAKAN SOFTWARE CATIA DAN PRINTER 3 DIMENSI
Authors: Sumartono Sumartono , Rasyid Abdul , Sinaga Andi Maju , Siahaan Erika Putri , Silalahi Kiki Afrimanti , Purba Yusuf Akuputra
Published: August 2022

Perkembangan ilmu pengetahuan dan teknologi mengalami peningkatan yang sangat pesat. Pada era sekarang ini memasuki sektor revolusi industri 4.0 terutama di bidang manufaktur. Printer 3D merupakan salah satu terobosan inovasi terbaru dalam dunia teknologi sesuai dengan era revolusi industri 4.0 yang menggunakan teknologi rapid prototyping yang berasal dari data software desain CAD/CAM dengan metode menumpuk bahan lapisan demi lapisan. Unmanned Aerial Vehicle (UAV) atau disebut juga drone merupakan pesawat  terbang tidak berawak yang merupakan inovasi yang lahir dari kemajuan teknologi. Harga komponen pada drone beragam mulai dari terendah hingga tertinggi, tergantung dari jenis drone yang digunakan. Tujuan dari perancangan ini adalah untuk membuat body drone menggunakan printer  3D dengan harga yang  lebih murah. Dalam pembuatan desain body drone, menggunakan software Catia dan software Creality Slicer untuk proses perintah lanjutan pada printer 3D. Pengaturan parameter menu basic dan advanced pada software Creality Slicer untuk menentukan kualitas dan waktu proses printing, pemilihan parameter dilakukan dengan cara mencetak desain dalam berbagai opsi sebelum mendapatkan hasil yang sesuai.  Hasil print body drone menggunakan printer 3D  dibandingkan dengan body bawaan dari drone dan dilakukan pengujian terbang. Hasil akhir dari perancangan ini adalah body drone yang terbuat dari material PLA ( Polylactic Acid )  dengan total waktu proses printing 18 jam 49 menit, massa 63 gram, waktu terbang 16 menit 7 detik
ANALISIS PELUANG PENGHEMATAN ENERGI PADA BOILER DENGAN KAPASITAS 40 TON/JAM DI PKS AEK LOBA PT. SOCFIN INDONESIA
Authors: Saidah Kamali , Barus Daniel S. , Razak Abdul
Published: August 2022

Boiler adalah bagian dari suatu pembangkit uap yang berbentuk seperti bejana tertutup yang dapat mengubah air jenuh menjadi uap (steam) jenuh dengan bantuan panas dari proses pembakaran bahan bakar. Berbagai usaha dapat dilakukan untuk menghemat biaya produksi uap diantaranya dengan melakukan audit energi pada sistem pembangkit uap (boiler). Audit energi didefinisikan sebagai proses evaluasi pemanfaatan energi dan indentifikasi peluang dan penggunaan sumber energi dalam rangka konservasi energi. Audit boiler bertujuan untuk mengidentifikasi adanya peluang penghematan energi, yang bisa diketahui dari parameter efisiensi. Ada beberapa acuan untuk mengevaluasi kinerja boiler, yaitu dengan melakukan perhitungan terhadap efisiensi boiler biasanya menggunakan metode langsung (direct efficiency) dan metode tak langsung (indirect efficiency). Boiler yang akan diaudit adalah water tube boiler berbahan bakar cangkang dan serabut dengan kapasitas 40 ton/jam di PKS Aek Loba, PT Socfin Indonesia. Berdasarkan hasil perhitungan didapatkan efisiensi dengan metode langsung sebesar 75%, potensi penghematan dengan mengendalikan rasio udara dari 1,5 menjadi 1,3 yang berdampak pada berkurangnya kadar oksigen pada gas buang. Hasilnya adalah penghematan bahan bakar sebesar 5%. Adapun parameter untuk menjaga stabilitas kinerja boiler adalah manajemen kualitas air umpan dan manajemen pembakaran.
PERANCANGAN PISAU PENCACAH MESIN PENCACAH PLASTIK POLYETHYLENE TEREPHTHALATE PET
Authors: Sucipto Arie , Manurung Leonardo , Rahmi Khairul , Manurung Nelson , Sumartono Sumartono , Pulungan Muhammad Anhar , Tarigan Piktor
Published: August 2022

Plastik merupakan jenis sampah yang sulit terurai, karena sifat plastik yang tak mudah terbiodegradasi. Plastik PET merupakan plastik yang sering digunakan sebagai wadah makanan. Plastik PET dapat di temukan pada hampis semua botol air mineral. Plastik ini dirancang untuk satu kali penggunaan saja. untuk mengurangi dampak lingkungan dari sampah plastik, maka material plastik harus didaur ulang untuk mendapatkan kembali produk plastiknya maupun untuk menghasilkan produk lain yang bernilai ekonomis dengan cara dicacah terlebih dahulu. Dengan demikian penulis mengambil judul tugas akhir “Rancang bangun mesin pencacah plastik Polyethylene terephthalate kapasitas 60 Kg/jam”. Dalam perancangan mesin pencacah plastik ini dilakukan perancangan berupa perhitungan dan pemilihan komponen – komponen mesin antara lain : mata pisau, poros, bantalan,motor, sabuk dan puli. Dan juga melakukan perancangan berupa desain gambar. Mesin pencacah plastik ini memiliki dimensi 395 mm × 720 mm × 1305 mm dengan konstruksi yang sederhana dan mudah dioperasikan, yaitu dengan menggunakan satu buah poros dan 8 buah mata pisau yang terdiri dari 6 buah pisau dinamis dan 2 buah pisau statis. Penggerak utama mesin pencacah plastik menggunakan motor bensin sebesar 6 HP dengan putaran 2200 rpm.
ANALISIS PERFORMANCE BACKPRESSURE TURBIN SEBELUM DAN SESUDAH TURBIN WASHING PADA PEMBANGKIT LISTRIK TENAGA PANAS BUMISARULLA UNIT SILANGKITANG
Authors: Sitompul Aris , Sianturi Roy Indra , Fahmi Faisal
Published: August 2022

Pembangkit Listrik Tenaga Panas Bumi (PLTP) memiliki komponen utama yaitu turbin uap. Penurunan performa turbin uap akan memengaruhi kendala pembangkit dan daya pembangkitan, sehingga pembangkit tidak mampu memenuhi Daya Mampu Netto (DMN) yang disetujui atau disebut derating. Penurunan performa turbin, salah satunya disebapkan kandungan pada uap utama seperti H2S, CO2, NH3, CH4, N2, He, Ar dan Ne tidak dapat tersaring oleh demister maupun separator, sehingga terjadinya penumpukan atau menempelnya kotoran(fouling)pada turbin dan menurunkan daya pembangkitan. Upaya yang dilakukan untuk meningkatkan kinerja turbin akibat fouling diantaranya dengan melakukan water wash pada turbin atau turbin washing system. Turbin washing systemadalah pencucian turbin khususnya pada bladeuntuk menjaga performa dan mengurangi fouling
ANALISIS PENGARUH MASSA JENIS BUMBU MASAKAN PADA ALAT PENAKAR BUMBU DAPUR OTOMATIS BERBASIS ARDUINO
Authors: Christie Monique , Az-Zahra Fathimah , Butar-Butar Jose Fernando , Silaban Mezack Hizkia , Manalu Rio Hanson , Suprapto Suprapto , Aziz A.
Published: August 2022

Bumbu masakan merupakan bahan alami yang digunakan sebagai penyedap masakan. Konsentrasi racikan bumbu pada masakan akan mempengaruhi cita rasa dan diperlukan alat yang mampu melakukan standardisasi keluaran bumbu untuk digunakan pada beragam jenis masakan. Alat penakar bumbu dapur otomatis dirancang dengan berbasis Arduino Mega 2560 untuk mampu melakukan standardisasi keluaran bumbu. Arduino dipilih karena dapat beroperasi otomatis dan memiliki waktu yang efektif. Untuk mendapatkan keluaran bumbu yang konstan, load cell akan menakar bumbu yang telah terjatuh dari wadah bumbu dan memprosesnya ke Arduino. Jika berat sudah sesuai dengan pengaturan input, katup akan menutup agar bumbu tidak terjatuh kembali ke dalam wadah. Akurasi keluaran bumbu akan dipengaruhi oleh keragaman tekstur bumbu yang kasar, semi halus, serta halus. Hasil keluaran bumbu sangat berpengaruh terhadap massa jenis bumbu. Semakin tinggi massa jenis maka semakin besar juga pengaruh terhadap massa tiap volume bumbu. Alat penakar bumbu dapur otomatis memiliki keluaran bumbu berkisar 3% sampai dengan 20%, atau rata-rata sekitar 10 gram.
Karrierhaszon-dilemmák: magyar nők lehetőségei az osztrák munkaerőpiacon
Authors: Balogh Eszter , Mikó Fruzsina , Csanády Márton
Published: August 2022

A tanulmány az Ausztriában élő magyar nők munkaerőpiaci integrációjának sikereiről ad áttekintést. Az írás alapját egy nem reprezentatív kvantitatív kutatás eredményei adják. Az integrációs sikereket a munkaerőpiaci státusz és a dekvalifikáció mértékéből képzett mutató, egy ún. karrierhaszon-mutató segítségével mutatjuk be, amelyet ez a tanulmány alkalmaz először a migrációkutatásban. A kutatási adataink azt mutatják, hogy a magyar nők Ausztriában jellemzően el tudnak helyezkedni, ám jelentős mértékben dekvalifikálódnak, amitől döntően a magas szintű nyelvtudás jelenthet védelmet. A nyelvtudás erős hatása mellett a kor, a migrációban töltött idő hossza, valamint a gyermekkel való rendelkezés ténye nem játszik jelentős szerepet a dekvalifikáció esélyében. A karrierveszteség esélyét azonban a nyelvtudás mellett a migrációban töltött évek száma is befolyásolja.
Reflections on the Canadian Bleeding Disorders Registry: Lessons Learned and Future Perspectives
Authors: Iorio Alfonso , Grenier Sylvain , Page David , Keepanasseril Arun , Iserman Emma , Tarride Jean-Eric , Matino Davide , Stoffman Jayson , Teitel Jerome , Boyle Lorraine
Published: August 2022

The Canadian Bleeding Disorders Registry (CBDR) has become the national registry for comprehensive care and research in hemophilia in Canada with patient, clinical, and research module connectivity.

The CBDR has served as a robust resource to inform epidemiology of disease, burden of disease, and disease changes and variation over time as new treatment modalities are introduced.

Information on the utilization of blood products to treat hemophilia has and can be retrieved and used by Canadian blood product procurement agencies to inform decision-making for past and future purchases.

The successful multistakeholder coordination and alignment achieved over decades with the development and function of the CBDR is an exemplar that could be extended to other rare disease areas.
Ozone pollution in China affected by stratospheric quasi-biennial oscillation
Authors: Li Mengyun , Yang Yang , Wang Hailong , Li Huimin , Wang Pinya , Liao Hong
Published: August 2022

Abstract. In recent years, near-surface ozone (O3) level has been rising fast in China, with increasing damages to human health and ecosystems. In this study, the impact of stratospheric quasi-biennial oscillation (QBO) on interannual variations in summertime tropospheric O3 over China is investigated based on GEOS-Chem model simulations and satellite retrievals. QBO has a significant positive correlation with near-surface O3 concentrations over central China (92.5°–112.5° E, 26°–38° N) when the sea surface temperature (SST) over the eastern tropical Pacific is warmer than normal, with a correlation coefficient of 0.53, but QBO has no significant effect on O3 under the cold SST anomaly. Compared to the easterly phase of QBO, the near-surface O3 concentrations have an increase of up to 3 ppb (5 % relative to the average) over central China during its westerly phase under the warm SST anomaly. O3 also increases above the surface and up to the upper troposphere, with a maximum increase of 2–3 ppb (3–5 %) in 850–500 hPa over central China comparing westerly phase to easterly phase. Process-based analysis and sensitivity simulations suggest that the O3 increase over central China is mainly attributed to the anomalous downward transport of O3 during the westerly phase of QBO when a warm SST anomaly occurs in the eastern tropical Pacific, while the local chemical reactions and horizontal transport processes partly offset the O3 increase. This work suggests a potentially important role of QBO and the related vertical transport process in affecting near-surface O3 air quality, with an indication for O3 pollution prediction and prevention.
Aqueous SOA formation from photosensitized guaiacol oxidation: Comparison between non-phenolic and phenolic methoxybenzaldehydes as photosensitizers in the absence and presence of ammonium nitrate
Authors: Go Brix Raphael , Li Yong Jie , Huang Dan Dan , Wang Yalin , Chan Chak Keung
Published: August 2022

Abstract. Aromatic carbonyls (e.g., methoxybenzaldehydes), an important class of photosensitizers, are abundant in the atmosphere. This study compared non-phenolic (3,4-dimethoxybenzaldehyde, DMB) and phenolic (vanillin, VL) methoxybenzaldehydes as photosensitizers for aqueous secondary organic aerosol (aqSOA) formation via guaiacol (GUA) oxidation under atmospherically relevant cloud and fog conditions. The effects of ammonium nitrate (AN) on these reactions were also explored. GUA oxidation by triplet excited states of DMB (3DMB*) (GUA+DMB) was ~4 times faster and exhibited greater light absorption than oxidation by 3VL* (GUA+VL). Both GUA+DMB and GUA+VL formed aqSOA composed of oligomers, functionalized monomers, oxygenated ring-opening species, and N-containing products in the presence of AN. The observation of N-heterocycles such as imidazoles indicates the participation of ammonium in the reactions. The majority of generated aqSOA are potential brown carbon (BrC) chromophores. Oligomerization and functionalization dominated in GUA+DMB and GUA+VL, but functionalization appeared to be more important in GUA+VL due to contributions from VL itself. AN did not significantly affect the oxidation kinetics, but it had distinct effects on the product distributions, likely due to differences in the photosensitizing abilities and structural features of DMB and VL. In particular, the more extensive fragmentation in GUA+DMB than in GUA+VL likely generated more N-containing products in GUA+DMB+AN. In GUA+VL+AN, the increased oligomers may be due to VL-derived phenoxy radicals induced by •OH or •NO2 from nitrate photolysis. Furthermore, increased nitrated products observed in the presence of both DMB or VL and AN than in AN alone implies that photosensitized reactions may promote nitration. This work demonstrates how the structural features of photosensitizers affect aqSOA formation via non-carbonyl phenol oxidation. Potential interactions between photosensitization and AN photolysis were also elucidated. These findings facilitate a better understanding of photosensitized aqSOA formation and highlight the importance of ammonium nitrate photolysis in these reactions.
Estimation of raindrop size distribution and rain rate with infrared surveillance camera in dark conditions
Authors: Lee Jinwook , Byun Jongyun , Baik Jongjin , Jun Changhyun , Kim Hyeon-Joon
Published: August 2022

Abstract. This study estimated raindrop size distribution (DSD) and rainfall intensity with an infrared surveillance camera in dark conditions. Accordingly, rain streaks were extracted using a k-nearest neighbor (KNN)-based algorithm. The rainfall intensity was estimated using DSD based on physical optics analysis. The estimated DSD was verified using a disdrometer. Furthermore, a tipping-bucket rain gauge was used for comparison. The results are summarized as follows. First, a KNN-based algorithm can accurately recognize rain streaks from complex backgrounds captured by the camera. Second, the number concentration of raindrops obtained through closed-circuit television (CCTV) images was similar to the actual PArticle SIze and VELocity (PARSIVEL)-observed number concentration in the 0.5 to 1.5 mm section. Third, maximum raindrop diameter and the number concentration of 1 mm or less produced similar results during the period with a high ratio of diameters of 3 mm or less. Finally, after comparing with the 15-min cumulative PARSIVEL rain rate, the mean absolute percent error (MAPE) was 44 %. The differences according to rain rate can be determined. The MAPE was 32 % at a rain rate of less than 2 mm h-1 and 73 % at a rate above 2 mm h-1. We confirmed the possibility of estimating an image-based DSD and rain rate obtained based on low-cost equipment during dark conditions.
Temperature and CCN sensitivity of orographic precipitation enhanced by a mixed-phase seeder-feeder mechanism
Authors: Thomas Julia , Barrett Andrew , Hoose Corinna
Published: August 2022

Abstract. Orographic precipitation is a key driver of flooding in mountainous areas. This article investigates the microphysical response of orographic rainfall to perturbations of temperature and cloud condensation nuclei (CCN) concentration. The study is motivated by the increased water vapour capacity of the atmosphere in a warming climate and the increasing frequency of extreme rainfall events. A case study for the Cumbria flood in December 2015 is performed with sensitivities using a realization of the `piggybacking' method implemented into a limited-area setup of the ICON model. A 6 % K-1 enhancement of rainfall results for the highest altitudes, caused by a `mixed-phase seeder-feeder mechanism', i.e. the interplay of melting and accretion. Total 24 h rainfall is found to increase by only 2 % K-1, significantly less than the 7 % K-1 increase in atmospheric water vapour. A rain budget analysis reveals that the negative temperature sensitivity of the condensation ratio and the increase of rain evaporation dampen the rainfall enhancement. Decreasing the CCN concentration speeds up the microphysical processing, which leads to an increase in total rainfall. At low CCN concentration the rainfall sensitivity to temperature is systematically smaller. It is shown that the CCN and temperature sensitivities are to a large extent independent (with a ±3 % relative error) and additive.