bluuebunny/crossref_metadata_2025 huggingface dataset:
Influência Da Nutrição Em Mulheres Com Endometriose: Revisão De Literatura
Authors: Gonçalves Dryele Silva , Silva Yone Da , Neves Carlos Eduardo Da , Marinho-Carvalho Mônica Mesquita
Published: July 2021

Contexto da pesquisa: Endometriose é uma doença ginecológica caracterizada por implantes endometriais benignos fora do útero podendo atingir diferentes locais acometendo exclusivamente mulheres em fase reprodutiva. Sua incidência varia em torno de 15% nas mulheres. As pacientes podem não apresentar nenhuma sintomatologia, mas a maior parte das mulheres apresentam sintomas que afetam de forma negativa o bem-estar como, fadiga crônica, dor pélvica crônica, dismenorreia e em casos mais agravado da doença a infertilidade pode estar presente. No entanto, até o momento, a sua etiopatogenia não está bem esclarecida e não existe uma teoria única que possa identificar e explicar todas as condições clínicas da doença que são consideradas multifatoriais como aspectos genéticos, imunológicos, hormonais e também aspectos nutricionais. Objetivos: O objetivo da seguinte revisão é analisar a interferência da nutrição em mulheres portadoras de endometriose e investigar se um tratamento nutricional adequado pode ser benéfico para as mulheres com essa patologia. Problema: Sabe-se que o protocolo de um tratamento medicamentoso para essa condição se faz totalmente necessário para o controle da doença, entretanto por ser uma patologia que causa processos inflamatórios a nutrição é uma boa aliada para um tratamento alternativo. Assim, a questão deste estudo é: A boa nutrição em mulheres com endometriose pode auxiliar de forma positiva na diminuição de inflamação, dores crônicas e consequentemente a melhora da qualidade de vida? Metodologia: Para este trabalho, realizou-se uma revisão bibliográfica, através de pesquisa qualitativa e exploratória, utilizando as bases de dados da Biblioteca Virtual em Saúde (BVS), Scientific Electronic Library Online (Scielo), Google Acadêmico, Google Livros e PubMed com pesquisas publicadas no período de 2015 a 2020. Resultados principais: Um tratamento nutricional adequado e individualizado com alimentos antioxidantes, anti-inflamatórios podem beneficiar mulheres com endometriose a diminuir processos inflamatórios e dores crônicas tornando possível a oportunidade de mais uma opção de tratamento para controle da doença e melhora da qualidade de vida.
Investigation on the recycling of sulfuric acid from pretreatment of cellulose for nanocellulose preparation
Authors: DUAN CHAOYU , PENG YANGYANG , FU SHIYU , LUCIA LUCIAN
Published: July 2021

Sulfuric acid is often used to pretreat cellulose prior to homogenization and conversion to nanocellulose. It would be economically significant to reuse the acid to close the overall value chain loop. The target of this work was to investigate the effect of recovery and recycling frequency of sulfuric acid from the pretreatments on the pretreatment yield of water-insoluble cellulose solid residue, and to explore the relationship between the nanocellulose size prepared by recovery of acid and number of cycles. The surface properties of the nanocelluloses were measured, including content of sulfate groups, absolute zeta potential, crystallinity, and thermal stability.
How to use total dissolved solids measurements to evaluate the performance of diffuser washers—A mill study
Authors: KOPRA RIKU , PERSONEN ANNA , KAYHKO JARI , DAHL OLLI
Published: July 2021

Various types of pulp washing equipment are available. Each washing device has a unique mechani-cal construction, and the washing principle is often a combination of dilution, thickening, and displacement washing. In this work, the performance of the pressure diffuser washer is studied.
In stepwise trials, the effect of the feed and discharge consistencies on the performance of the diffuser was stud-ied. The effect of the downward velocity of the screen on the pressure diffuser’s washing efficiency was also stud-ied. The measurement of total dissolved solids (TDS) by a process refractometer was used as a wash loss measure-ment unit and the refractometer’s results were used in the calculations of standardized Nordén efficiency (E10) values. The chemical oxygen demand (COD) and conductivity values were also measured and their results com-pared to the TDS results.
The results indicated that feed consistency has a significant effect on the performance and effectiveness of the diffuser washers in the mill. It can also be stated that when the downward velocity of the screen is adjusted to too high a level, the washing efficiency of the pressure diffuser decreases. As a conclusion from the mill tests, it can be stated that even small process parameter changes can provide enhanced diffuser washing at the beginning of the washing line, which has a direct effect on the performance of post-oxygen washing.
INVESTIGATING THE VARIATIONS OF HORIZONTAL (H) AND VERTICAL (Z) COMPONENTS OF THE GEOMAGNETIC FIELD AT SOME EQUATORIAL ELECTROJET STATIONS
Authors: Akpaneno Aniefiok F. , Abdullahi O. N.
Published: July 2021

This research is monitoring equatorial geomagnetic current which causes atmospheric instabilities and affects high frequency and satellite communication. It presents the variations of Horizontal (H) and vertical (Z) component of the geomagnetic field at some Equatorial Electrojet (EEJ) Stations during quiet days. Data from five (5) observatories along the magnetic equator were used for the study. Daily baseline values for each of the geomagnetic element 𝐻 and Z were obtained. The monthly average of the diurnal variation and the seasonal variations were found. Results showed that the variations of the geomagnetic element of both H and Z differ in magnitudes from one stations to another along the geomagnetic Equator due to the differences of their geomagnetic latitude. The Amplitude curves for Z) are seen to be conspicuously opposite to that of H), and there is absence of CEJ in Z- Component but present in H- Components. The  values during the pre-sunrise hours are low compare to daytime hours. Minimum variations of dH was observed during June solstice and maximum variations was observed during Equinox season. This study shows that daily variations of (H) and (Z) occur in all the stations. The enhancement in H is as a result of EEJ current
Актуатор с последовательным соединением стержня из сплава с памятью формы и упругого элемента смещения
Authors:   ФГБУН Институт прикладной механики РАН, г. Москва, Россия, Мовчан А. А. , Экстер Н. М. ,   ФГБОУ ВО «Московский государственный университет им. М.В. Ломоносова», Москва, Россия
Published: July 2021

One of the most promising applications of shape memory alloys (SMA) is their use for creating working bodies of power exciters (actuators). The working body of the actuator must perform certain movements due to shape memory phenomena (heating, working stroke of the actuator) and the accumulation of direct transformation deformations (cooling, idling of the actuator). It is known that the process of deformation of SMA during cooling occurs only in the presence of mechanical action, while the return to the original form during heating occurs in the absence of a corresponding mechanical action and even in the presence of a sufficiently large counteraction. To ensure the possibility of not only working, but also idling of the actuator, the working body of the SMA is connected to the elastic bias element so that both of these elements are deformed together. In this case, when the SMA element is heated, it is deformed due to the shape memory phenomenon, which leads to the deformation of the bias element associated with the working body and the appearance, both in this element and in the working body, of mechanical stresses that increase with the temperature of the SMA element. It is these stresses, which continue to act during the cooling of the working body, that ensure its deformation in the opposite direction at the stage of cooling of the working body and the corresponding direct transformation into SMA. In this paper, the behavior of an actuator consisting of a SMA rod and an elastic rod (an bias element) connected in series, the total length of which is assumed to be unchanged, is analytically investigated. The influence of the system parameters on the stresses in the SMA rod and the value of the working stroke of the actuator is investigated. The conditions for the implementation of the closed two way shape memory effect in this system are determined.
Inconsistent trends regarding the association between ABO blood groups and susceptibility to SARS-CoV-2 infections
Authors: Lee Jasmin , Guo Carol
Published: July 2021

ABO antigens, produced from the ABO gene, are known to impact host interactions with various viruses. One characteristic is the host’s susceptibility to viral infections. Host interaction with viral particles is altered by the blood type-determined combination of ABO antigens on the cellular surface. SARS-CoV-2 is a novel strain of the coronavirus family known to have structural similarities with SARS-CoV. Considering ABO antigens’ association with SARS-CoV, studies have examined their relationship with SARS-CoV-2 as well. We reviewed current perspectives on the relationship between host susceptibility to SARS-CoV-2 infections and ABO antigens by examining cohort studies observing proportional differences between patients of varying blood types. While many studies indicated a higher risk of type A patients and a lower risk for type O patients, trends tended to vary per population. Consequently, we investigated the differences in study design between cohort studies that produced the variation in trends. Additionally, we examined genome-wide association studies that indicate a genetic association between the variables. We present the need for a standardized calculation method determining the significance of each blood group in its relationship with SARS-CoV-2 susceptibility per cohort.
As mulheres de Fernando:
Authors: Silva Roberta
Published: July 2021

Ao nos deslocarmos para Fernando de Noronha no período oitocentista, nos vemos em uma ilha - presídio, em que são ausentes certos elementos de controle, tais como celas, algemas e muros. Militares e sentenciados conviviam nas mesmas condições, existindo em alguns casos laços de amizades, que propiciavam regalias a alguns sentenciados dispostos a ajudar na vigilância de outros presos. As mulheres encontravam-se inseridas nesse contexto, mas se enquadraram em certa invisibilidade perceptível nos rastros deixados nos tantos ofícios trocados entre a administração de Pernambuco e o presídio, tornando assim os significados dessa presença misteriosa. Viviam, em alguns casos, como além daqueles paredões de água salgada, inseridas num modelo patriarcal de sociedade, ou seja, no universo do mundo privado, ocupadas com o trabalho doméstico e no cuidado com seus maridos e filhos. Contudo, seus poderes dentro do presídio eram demais significantes, para encerrá-las dentro de alguns papéis e costumes secularmente estabelecidos. Assim, através de leituras e interpretações de fontes primárias e secundárias, este artigo tem como objetivo realizar uma análise do cotidiano das mulheres no presídio de Fernando de Noronha no período imperial, dentro de uma perspectiva de gênero, procurando apresentar de maneira clara e objetiva as especificidades dessa realidade histórica, bem como a relevância da presença feminina nesse universo carcerário, em que suas artes do fazer humanizaram as relações sociais e o cotidiano desse presídio.
O discurso da verdade jurídica e seus desdobramentos na convicção no sistema de justiça: uma análise a partir de Max Weber
Authors: CABRAL DE ARAÚJO SILVA MEIRE CRISTINA
Published: July 2021

A proposição central deste artigo é reconhecer o modo como o discurso da verdade jurídica se efetiva no sistema de justiça brasileiro. O estudo efetua-se a partir das elaborações de Max Weber referente a sociologia da dominação, onde, dentre outros temas, investiga os liames não aparentes nas relações que se estabelecem entre política e direito. A compreensão que se tem, a partir deste, é de que o fenômeno da verdade jurídica é construído por emanações do poder e de discursos da verdade. A eficácia dessa convicção, como algo a ser seguido sem desconfiança e capaz de obter a adesão social, requer um especializado aparato burocrático.

Palavras-chave: Dominação, Discurso Jurídico, Sistema de Justiça.
Palácio do Planalto e Ministério da Mulher, da Família e dos Direitos Humanos: Sexualidade e Gênero
Authors: Quaresma da Silva Denise Regina , Dias da Silva Karina , SOUZA MARCOS ROGÉRIO DOS SANTOS
Published: July 2021

O presente estudo propõe, a partir de estudo bibliográfico qualitativo dialético, refletir sobre a temática sexualidade e gênero na perspectiva sócio cultural e sob as lentes do Palácio do Planalto e do Ministério da Mulher, da Família e dos Direitos Humanos. Neste sentido rompemos com o discurso heteronormativo e machista promovido pelos agentes públicos do executivo federal brasileiro e propagamos os direitos humanos, como sendo direitos inerentes a todos e todas pessoas, não importando raça, cor, sexo, credo, etnia, idioma e qualquer outra condição. Precisamos romper com os discursos que excluam os sujeitos e apregoar o direito a vida e a liberdade e sem nenhum tipo de discriminação e reforçarmos que o os dirigentes públicos devem combater toda e qualquer pratica que viole os direitos humanos.
Infraestrutura escolar: uma análise de sua importância para o desempenho de estudantes de escolas públicas
Authors: RODRIGUES DE ANDRADE RAPHAEL , Henrique Romani de Campos LUIS , Victor Veiga da Costa HEITOR
Published: July 2021

O presente artigo objetiva analisar até que ponto a infraestrutura escolar afeta o desempenho escolar dos alunos, a partir do caso particular da rede pública de ensino do Recife Foram utilizados os bancos de dados gerados pela FUNDAJ e pelo INEP. A abordagem é quantitativa com o uso de técnicas de análise de regressão. Os resultados encontrados mostram a importância de uma boa infraestrutura escolar. Mas, mais do que isto, revelam que a infraestrutura interage com outros componentes educacionais. A principal conclusão do artigo é demonstrar que decisões de investimento físico não devem ser dissociadas de outras políticas educacionais.Palavras-chave: Infraestrutura. Influência. Aprendizagem Escolar.
Effectors of income-child health gradient: Role of dietary diversity on child nutritional status in selected slums of Dhaka city
Authors: Mahmood Sazia , Kawser Mahbuba , Akther Shamima , Rahim Abu Torab MA
Published: July 2021

Child dietary diversity (CDD) is an important nutritional outcome measuring the economic ability of a household to access a variety of foods during a determined period. Relating household income to CDD and child anthropometric failure, a cross-sectional study was conducted among 275 selected Dhaka city slum children of 6-12 years. Prevalence of stunting (18%), wasting (19.4%), and underweight (22%) among them were found similar to the current national figure. However, a sizable number of households showed increased DDS (>5), thereby indicating an increased household purchasing power (PP). Bivariate regression analysis showed that children from lower family income (≤6000 BDT) were 3 times more likely to be stunted as compared to children with greater family income [Unadjusted OR=3.097, 95% CI (1.578-6.077), p=0.001]. Furthermore, logistic regression showed that children who had <5 DDS were 2 times more likely to be stunted than children who had ≥5 DDS [Adjusted OR=2.127, 95% CI (1.051- 4.305), p=0.036]. Therefore, an inverse association has been found between CDD and their anthropometric failure.

J. Bangladesh Acad. Sci. 45(1); 85-94: June 2021
On the Diophantine equations z2 = k(k2 + 3) and z2 = k(k2 + 12)
Authors: Islam Shah Mohammad Shahidul , Kafi Majumdar Abdullah Al
Published: July 2021

This paper provides an analytical method of finding all the (positive, integral) solutions of the Diophantine equation z2 = k(k2+3). We also prove analytically that the Diophantine equation z2 = k(k2+12) has no positive, integer solution.

J. Bangladesh Acad. Sci. 45(1); 127-129: June 2021
Cambio climático y evaluación de riesgo para el patrimonio cultural
Authors: García Santa Cruz Mauro Gabriel , García Santa Cruz María Jimena , García Guillermo Rubén
Published: July 2021

Se estima que las actividades humanas han causado un calentamiento global de aproximadamente 1,0°C con respecto a los niveles preindustriales. También es probable que el calentamiento global llegue a 1,5°C entre 2030 y 2050 si continúa aumentando al ritmo actual. Los modelos climáticos prevén aumento de la temperatura media, de los episodios de calor extremo y de las precipitaciones intensas, además prevén la probabilidad de sequía y de déficits de precipitación. Para mitigar el cambio climático es necesario reducir las emisiones de GEI e implementar medidas de adaptación. En ese sentido, existen estrategias relacionadas con la conservación del patrimonio, que pueden contribuir con los objetivos propuestos en el Acuerdo de París y en la Agenda 2030. En este artículo se presentan los resultados de las evaluaciones de riesgo de quince ciudades. Para este estudio se consideran los riesgos de origen natural y antrópico, además de los riesgos asociados al cambio climático, que podrían afectar el patrimonio en cada uno de los casos de estudio. Luego se determina el porcentaje de los impactos relacionados a los riesgos considerando su origen. Este análisis permite indicar que el impacto de los riesgos asociados al cambio climático representa entre el 40% y el 60% de los impactos totales, dependiendo del caso de estudio analizado. Considerando estos resultados, se destaca la importancia de la implementación de estrategias de adaptación y mitigación, basadas en la protección del patrimonio, que permitan reducir los riesgos asociados al cambio climático.
Kompetensi Manajerial Kepala Sekolah dalam Meningkatkan Profesionalitas Guru di SDN Blitar Kecamatan Sukorejo Kota Blitar
Authors: Munawaroh Siti
Published: July 2021

Kepala sekolah dalam melakukan berbagai upaya dalam peningkatan mutu pendidikan harus terus dikembangkan. Salah satunya adalah meningkatkan  profesionalitas guru sebagai personal yang secara langsung berhadapan dengan siswa. Tujuan penelitian ini adalah  menggabarkan upaya kepada sekolah yang memiliki kopetensi untuk meningkatkan profesionalisme guru.

Fokus Penelitian ini adalah : 1) Bagaimana program kepala SDN Blitar Kecamatan Sukorejo Kota Blitar sebagai manajer dalam meningkatkan profesionalitas guru.  2) Bagaimana pelaksanaan kepala SDN Blitar Kecamatan Sukorejo Kota Blitar dalam meningkatkan profesionalitas guru. 3) Bagaimana evaluasi kepala SDN Blitar Kecamatan Sukorejo Kota Blitar dalam meningkatkan profesionalitas guru.

Kajian dan pembahasan tesis ini bertujuan untuk, 1)mendeskripsikan program kepala SDN Blitar Kecamatan Sukorejo Kota Blitar dalam meningkatkan profesionalitas guru. 2) mendeskripsikan pelaksanaan kepala SDN Blitar Kecamatan Sukorejo Kota Blitar dalam meningkatkan profesionalitas guru. 3) mendeskripsikan evaluasi kepala SDN Blitar Kecamatan Sukorejo Kota Blitar dalam meningkatkan profesionalitas guru.

Pendekatan penelitian yang digunakan termasuk jenis penelitian kualitatif. Yang mempunyai ciri-ciri antara lain: latar alami, peneliti sebagai instrument kunci, dan penelitiannya bersifat deskriptif. Dalam pengumpulan datanya peneliti menggunakan metode wawancara, observasi dan dokumentasi, dimana ketiganya tersebut merupakan komponen yang tidak dapat terpisahkan guna memperoleh data dalam penelitian. Untuk analisis datanya penulis menggunakan reduksi data atau penyederhanaan (data reduction), paparan data atau sajian data (data display), dan penarikan kesimpulan (conclusion verifiying).

Hasil penelitian menunjukkan bahwa, 1) Perencanaan kepala sekolah, meliputi: perencanaan melakukan supervisi, pelatihan, workshop, perencanaan pada teknik peningkatan yang efektif dilakukan dengan penekanan pada kualitas pembelajaran dan prestasi belajar siswa. 2) Pelaksanaan yaitu menciptakan iklim sekolah yang kondusif dengan memberikan nasehat dan tauladan. 3) Evaluasi meliputi: mengobservasi kegiatan kelas (observe classroom activities), meninjau kembali rencana pengajaran dan catatan-catatan dalam kelas. Memperluas jumlah orang-orang yang terlibat dalam evaluasi.
Aktifitas Kepemimpinan Kepala Madrasah Dalam Meningkatkan Motivasi Kerja Guru Di Madrasah Ibtidaiyah Negeri Pojok Ponggok Blitar
Authors: Sururi Muh. Hamzah
Published: July 2021

Fokus penelitian ini adalah untuk endeskripsikan. bagaimana aktifitas kepemimpinan kepala madrasah, motivasi kerja guru, dan kontribusi kepemimpinan kepala madrasah dalam meningkatkan motivasi kerja guru di MIN Pojok. Pendekatan penelitian yang digunakan  termasuk jenis penelitian kualitatif. Yang memiliki ciri-ciri antara lain : latar alami, peneliti sebagai instrument kunci, dan penelitiannya bersifat deskriptif. Dalam pengumpulan datanya peneliti menggunakan metode wawancara, observasi dan dokumentasi, dimana ketiganya tersebut merupakan komponen yang tidak dapat terpisahkan guna memperoleh data dalam penelitian. Untuk analisis datanya peneliti menggunakan reduksi data atau penyederhanaan (data reduction), paparan data  atau sajian data (data display), dan penarikan kesimpulan (conclusion verifiying). Hasil penelitian menunjukkan bahwa, 1) Aktifitas kepemimpinan kepala madrasah dalam meningkatkan motivasi guru antara lain: menciptakan kebersamaan diantara guru, menciptakan rasa aman dan nyaman dilingkungan madrasah, memberikan sugesti positif kepada para guru, mengadakan pendidikan dan pelatihan bagi guru, menyediakan kebutuhan dalam menunjang kegiatan belajar mengajar. 2) Motivasi kerja guru di MIN Pojok secara umum sudah baik, dilihat dari tingkat kehadiran guru dimadrasah, keaktifan guru dalam pembelajaran dikelasdan diluar kelas, pembuatan perangkat pembelajaran yang sudah siap sebelum pengajaran, melakukan penilaian dan analisis hasil ulangan siswa 3) Kontribusi kepemimpinan kepala madrasah dalam meningkatkan motivasi kerja guru di MIN Pojok antara lain: kepala madrasah menerapkan manajemen terbuka, menerapkan sistem pembagian tugas dan tanggung jawab, menjalin hubungan yang baik terhadap guru dan karyawan, melakukan pengawasan secara berkesinambungan, melakukan evaluasi terhadap uraian tugas dan dokumen dan memberikan koreksi dan masukan jika terjadi kesalahan
Implementasi Etika Belajar Dalam Perspektif Pendidikan Islam pada Siswa Program Kelas Religi
Authors: Nidhomuddin M. Dian Zaynul Fata , Muslimin Muslimin
Published: July 2021

Hampir semua orang mengerti dan mengetahui kepentingan dan keperluan mencari ilmu sekalipun hanya secara umum tidak secara mendetail, terutama umat islam yang diwajibkan dalam agamnya untuk menuntut ilmu tiada terbatas, selama ilmu itu membawa kemaslahatan dalam hidupnya. Tidak semua ilmu yang diperoleh bisa bermanfaat bagi orang tersebut, lmu yang bermanfaat adalah ilmu yang bisa membawa pemiliknya agar selalu taat pada Allah swt, dan bisa di amalkan untuk kepentingan bangsa masyarkat, keluarga, dan pribadi khususnya. karena Demi kebahagiaan dunia, semua dicari dengan ilmu, demi kebahagiaan akhirat, juga dengan ilmu. Salah satu syarat mendapatkan ilmu manfaat dan barokah adalah melaksanakan etika dalam belajar. Berdasarkan hal tersebut penelitian ini bertujuan untuk menjeleaskan: 1) Etika  belajar dalam prespektif Pendidikan Islam  yang diimplementasikan oleh siswa kelas progam Religi di MTsN 2 Kota Kediri, 2)  Aspek yang berkontribusi pada Implementasi  Etika belajar dalam Perspektif Pendidikan Islam pada Siswa kelas progam Religi di MTsN 2 Kota Kediri.

Hasil analisis dari penelitian ini dapat disimpulkan 1. Dalam implementasi etika belajar siswa progam religi di MTsN 2 Kota Kediri terdapat 7 poin etika yang menjadi pegangan saat belajar selama 3 tahun di Madrasah ini yaitu 1) Niat di kala belajar, 2) Memilih ilmu, guru dan teman serta ketahanan dalam belajar, 3) Menghormati ilmu dan ulama, 4) Berdoa sebelum belajar, 5) Ketekunan, kontiunitas dan cita-cita luhur, 6) Tawakal kepada Allah 7) Wara, 2. Faktor pendukung 1) keteladanan kepala dan guru 2) Motivasi / tekad siswa 3) dukungan orang tua terhadap progam kelas religi di MTsN 2 Kota Kediri 4) kurikulum yang terintregasi dengan etika etika dalam belajar sesuai dengan pendidikan islam, sedangkan faktor penghambatnya adalah 1) Belum semua pihak madrasah memberi contoh, 2) adanya siswa yang malas, 3) media yang semakin berkembang menyebabkan para siswa kurang fokus dalam niatan awal dalam belajar
UJI MICROTETRAZOLIUM (MTT) EKSTRAK METANOL DAUN Phaleria macrocarpa (Scheff.) Boerl TERHADAP SEL KANKER PAYUDARA MCF-7
Authors: Amir Hermansyah , Murcitro Bambang Gonggo
Published: July 2021

This study aimed to investigate research about cytotoxicity correlation level of Phaleria macrocarpa (Scheff) Boerl also known as Mahkota dewa leaves methanol extract against  MCF-7 cell in vitroto investigate the relationship between them in the goal to investigate alternative low cost herbal medicine agents to fight breast cancer. Cytotoxicity properties of samples against MCF-7 breast cancer cell lines was performed by using the Microtetrazolium (MTT) assay against MCF-7 cell line. The correlation between concentration of crude and cytotoxic activity was interpreted by statistical analyses. The study showed that P. macrocarpa leaves extracts showed cytoxicity activity against breast cancer MCF-7 cell lines which IC50 concentration showed at 15 µg/mL  Correlation between concentration of extract and cytotoxicity property (absorbance value) were founded in weak relationship (R = 0.372, R2 = 0.138).  It could be effect of many different compounds in the P. macrocarpa  leaves methanol extracts may cause the pharmacological interactions, so lower or higher concentration will be antagonistic effect on absorbance or cell viability. Further study on its mechanism pathway on revealing against breast cancer could be explored. Furthermore, the natural product derived from P. macrocarpa leaves methanol extracts have potential use as alternative drugs against breast cancer.
UJI AKTIVITAS ANTIPLASMODIUM FRAKSI N-HEKSANA DAUN Peronema canescens TERHADAP Mus musculus
Authors: Andriani Fenny , Sundaryono Agus , Nurhamidah Nurhamidah
Published: July 2021

Peronema canescens (Sungkai) has been used in Bengkulu as raw herbal remedy to reduce the fever, some people are using as a malaria drug. P.  canescens leaves contain alkaloids, flavonoids, tannins and terpenoids – steroids .This study aims to analyze the effect of P.  canescens leaves  n-hexane fraction.  against paracetemias in Mus musculus infected with Plasmodium berghei, then to prove whether the . P.  canescens leaves n-hexane fraction  has potential as alternative medicine for malaria .   To make P. canescens extract , leaves was macerated using EtOH (96%), then filtrate was evaporated using a rotary evaporator, then fractionated with n-hexane. The 25 healthy  M.musculus  weighing 20-40g each, infected with P.berghei, grouped into 5 ie group 1 (K-) was treated orally with aquades, group 2 (K +) was treated orally with 0.42 mg of Chloroquine, Group 3 (P1) Group 4 (P2), group 5 (P3) was treated orally with a P.  canescens leaves n-hexane fraction  each at a dose of 0.028 ,  0.056 and 0.084 g / kgBW. After 3 days of digestion for each treatment, the amount of erythrocytes was calculated under a microscope. : The giving of the with dose 0,028 g / kgBW able to inhibit paracetemia 33,49%,  0,056 g / kgBW able to  57.91% and  0,084 g / kgBW able to  61.69%   The conclusion is the P. canescens leaves n-hexane fraction  at a dose of 0.028 , 0.056 , and 0.084 g / kgBW orally wil be decreased the amount of paracetemia in M.musculus, and the higher the dose given the higher percent of the inhibition.
STUDI PERBANDINGAN PEMBELAJARAN KOOPERATIF MENGGUNAKAN MEDIA KARTU PINTAR DAN KARTU KEMUDI PINTAR
Authors: Sari Yova Andela , Bahar Amrul , Rohiat Salastri
Published: July 2021

The problem of learning process that often occur in classroom that the use of conventional learning method. This makes the lack of student activeness in the process and makes the students' low learning outcomes . So that researchers interested in finding variations of teaching by combining the learning model with instructional media. The use of this media is taken into consideration from its practicality, strength, and effectiveness. The type of research used is quasi experimental research with population class XI IPA in SMAN 8 Bengkulu  and sample is class XI IPA 2 and class XI IPA 3. The sample in this research is by applying smart card media for experiment class 1 (XI IPA 3) With the experimental class 2 (XI IPA 2) using smart steering card media on salt hydrolysis topics. Data analysis used are mean value, homogeneity test, normality test, t test and questionnaire analysis. The average value of posttest experiment class I is 76.875, while for experimental class II is 80,85. Then t test with significant level (? = 0,01), then got tcount value equal to 5,41 and 2,39 for table . The results showed that there were significant differences in learning outcomes between the smart card media class and the smart media grade of the steering wheel on the salt hydrolysis topics.
BIOSINTESIS NANOPARTIKEL PERAK MENGGUNAKAN EKSTRAK BUAH Passiflora flavicarva (MARKISA) UNTUK MENDETEKSI LOGAM BERAT
Authors: Maryani Dina , Firdaus M. Lutfi , Nurhamidah Nurhamidah
Published: July 2021

The aim of this research was to synthesize silver nanoparticle (NPP) by using Passiflora flavicarva (Markisa) fruit extract as detector of heavy metal. The NPP particles produced were determined by their optimum condition on the ratio of the volume of  Passiflora flavicarva passion fruit extract to AgNO3 and the reaction time. The silver nanoparticles produced under optimum conditions will be tested for selectivity against several metals that are often present in the environment, once the selective metal is known then it can be sensitized to the metal using a UV-Vis spectrophotometer to determine the minimal concentrations that can be detected by the silver nanoparticles Formed. The results showed that Passiflora flavicarva passion fruit extracts could be used for the biosynthesis of  NPP particles because they contain vitamin C and flavonoids capable of reducing Ag+ to Ag0 in the form of NPP. The optimal conditions for forming NPP particles are in the 1: 2 ratio with a 2 hour reaction time. From the results of selectivity test of NPP to some heavy metals that often exist in environment, it is known that NPP selective to mercury metal. It was found that selective mercury was followed by a sensitivity test with a UV-Vis spectrophotometer, with sensitive NPP  up to a concentration of 6.7 ppm. From the results of this study it can be concluded that NPP particles formed can be used to detect mercury metal up to a minimum concentration of 6.7 ppm.
PREPARASI DAN KARAKTERISASI MIKROKRISTALIN SELULOSA (MCC) BERBAHAN BAKU TANDAN KOSONG KELAPA SAWIT (TKKS)
Authors: Effendi Fepri , Elvia Rina , Amir Hermansyah
Published: July 2021

[PREPARATION AND CHARACTERIZATION OF MICROCRYSTALLINE CELLULOSE (MCC) MADE FROM EMPTY PALM OIL BUNCHES (TKKS)] Empty Palm bunches (TKKS) is solid waste from industrial processing of oil palm (Elaeis guineensis Jacq) that have a high cellulose content.  This research aims to synthesize Microcrystalline Cellulose (MCC) from TKKS and determine the characteristics of the MCC produced. The manufacturing process begins with the MCC delignifikasi multistage pulping TKKS using mixed of 3.5% HNO3 and NaNO2 in temperatures of 90 ?C for 2 hours, followed by heating of a mixture of 2% NaOH and Na2SO3 2 % at temperature 50?C for 2 hours. The second stage of the lignification process is done using NaOH 17.5 %, followed by hydrolysis towards ?-Cellulose lignification results with heating in the aqueous solution of HCl at concentrations of 3, 3.5 and 4 M for 30, 45 and 60 minutes. From the results obtained from the hydrolysis of the optimum yield of 80.73 %, i.e., MCC that use concentration of HCl 3 M for 30 minutes.  MCC produced then analyzed using FTIR, XRD, and PSA. FTIR absorption for MCC results showed an of waves number on a 3375.43 cm-1 and 2899,01cm-1, indicating the presence of hydroxyl OH and CH.The results of the analysis with the PSA suggests that MCC has generated a measure of particle diameter 0.5281 µm. Using XRD analysis results that MCC has a degree of crystallinity of 86,79 %. And the results of testing the content of carbohydrates in MCC produced shows levels of carbohydrates of 88.36 %.
PENENTUAN PARAMETER ADSORPSI SILIKA SINTETIK DARI CANGKANG KELAPA SAWIT TERHADAP KANDUNGAN AMMONIUM PADA LIMBAH CAIR TAHU
Authors: Karimullah Rizki , Elvia Rina , Amir Hermansyah
Published: July 2021

[DETERMINATION OF SYNTHETIC SILICA ADSORPTION PARAMETERS OF OIL PALM SHELLS AGAINST THE CONTENT OF AMMONIUM ON LIQUID TOFU WASTE] This research aims to determine adsorption capacity of synthetic silica synthesized from Palm Oil (Elaeis guineensis Jacq) shells ashes against the content of Ammonium on tofu liquid waste . The shell sample soaked in a solution of HCl 10% for 2 hours, charred at a temperature of  300 °C for 3 hours ago ashed at 600 °C for 2 hours. Then ash soaked with HCl 1.2 M for 24 hours.  Taken 120 g of ash shells and then mixed right while heated with 160 mL 4 M NaOH. The residue obtained is heated at a temperature of 5000 °C  for 30 minutes, cooled to room temperature and retrieved the Na2SiO3 particle.The particle then  dissolved into 200 ml aquademin and settled at 12 hours, filtered and filtratnya ditetesi with HCL 1 M while stirring, until the white gel is formed and settled in the next 24 hours, filtered, and dried at a temperature of 120 °C for 2 hours, an silica powder obtained as result.  Ammonium Adsorption is done with mass variation 0125, 0.25, 0.5, 0.75, and 1 g silica as well as variations of the contact time of 15, 30, 60, 90, and 120 minutes. The results showed Ammonium adsorption at tofu liquid waste by silica synthesis from the Palm Oil shell ashes occurs with a maximum mass of 0.25 g and optimum contact time of 30 minutes with a capacity of adsorption of 2.581 mg/L and 3,154 mg/L as well as with adsorption efficiency at  61.9% and 76.8%.
PENERAPAN KEMOMETRIK PADA METODE CITRA DIGITAL UNTUK ANALISIS ION MERKURI (II) DENGAN INDIKATOR NANOPARTIKEL PERAK
Authors: Dinata Angga Aprian , Firdaus M. Lutfi , Elvia Rina
Published: July 2021

Digital image method in quantitative analysis usually uses one of the RGB primary color components (Red, Green, Blue), so that not all digital image data can be extracted. Then needed a method that can render the whole RGB values as variables in quantitative analysis are known as chemometric. This research aims to know the influence of the application of chemometric against the sensitivity of the digital image. Chemometry method used is the Principal Component Regression (PCR) and Partial Least Square (PLS) using Unscramber X software from Camo software, USA.. This method is applied for the quantitative analysis of Mercury (II) ion with silver nanoparticles (NPP) immobilization on filter paper indicator. The research results showed that chemometric has a good influence against the level of the Limit of Detection (LOD) of the digital image, where the level of LOD with chemometric application of the Principal Component Regression (PCR) is 0.4311 ppb, and Partial Least Square (PLS) is  0.4310 ppb smaller than without the application of chemometric Single Linear Regression (SLR) at 0.837 ppb.
UJI AKTIVITAS ANTIBAKTERI DAUN JERUK KALAMANSI (Citrofortunella microcarpa) TERHADAP BAKTERI Staphylococcus aureus DAN Escherichia coli
Authors: Oktasila Deza , Nurhamidah Nurhamidah , Handayani Dewi
Published: July 2021

This study aims to examine the antibacterial activity of ethanol extract and essential oil of Kalamansi citrus leaves (Citrofortunella microcarpa) against Staphylococcus aureus and Escherichia coli bacteria. The raw material of Kalamansi citrus leaves is obtained from the Village of Pondok Kubang, Bengkulu Tengah (3.70060S, 102.35780E). Ethanol extract from Kalamansi citrus leaves was obtained by maceration using ethanol 96%, then ethanol extract was made dilution concentration 40 ; 20; , 10; and 5%. The essential oil of Kalamansi citrus leaves is obtained by water-vapor distillation, then made variations of concentration 20;, 15;, 10;  and 5%. The method used to test the antibacterial activity is the paper disc diffusion method , the antibacterial activity is shown by the diameter of the inhibiting  zone formed. The data of antibacterial test result were analyzed by using One Way Anova test which showed the effect of treatment on the growth of test bacteria seen from the value (P <0,01) and continued by Duncan test to know the effect of the treatment. The results showed that ethanol extract of Kalamansi citrus leaves had antibacterial activity against S. aureus and E. coli bacteria with moderate inhibitory diameter is  7.20 and 5.73 mm at concentration 40%, while antibacterial activity on essential oil of Kalamansi citrus leaves is categorized as strong with inhibition zone diameter is 14.83 and 13.00 mm at concentration 20%.
PERBANDINGAN MODEL PEMBELAJARAN KOOPERATIF TIPE THINK TALK WRITE (TTW) DAN CREATIVE PROBLEM SOLVING (CPS) TERHADAP MINAT DAN HASIL BELAJAR KIMIA SISWA
Authors: Pratiwi Ghea Sefriza , Bahar Amrul , Elvia Rina
Published: July 2021

The purpose of this study is to describe the comparison of Think Talk Write learning models and Creative Problem Solving learning models to the interests and learning outcomes of chemistry in basic chemical law material. This research was conducted in January-May 2019. The research conducted was a kind of quasi-experimental research. The population of this study was class X MIA, totaling 136 students in SMAN 8 Kota Bengkulu in the academic year 2018/2019. Sampling was carried out after the normality and homogeneity test, so the X MIA 2 class was selected using Think Talk Write and X MIA 3 models that used the Creative Problem Solving model with a total of 68. Analysis of the data used was mean, normality test, test homogeneity, interest questionnaire analysis, N-Gain Score test and hypothesis test (t test). In general, both of these learning models are able to increase students 'interest and learning outcomes of chemistry, where the percentage of students' interest in learning chemistry in the Think Talk Write model is 80.5% and categorized as good, for the class of Creative Problem Solving model the percentage is 76.6% and also categorized as good. For the value of N-Gain score on Think Talk Write (TTW) class is and categorized as high while in the Creative Problem Solving class is 0.62 and is categorized as medium. The t-test results on the affective aspects are sig. (2-tailed) of 0.015 and on the cognitive aspect of 0.001. It states that there are significant differences in the interest and learning outcomes of chemistry that apply the Think Talk Write (TTW) learning model and Creative Problem Solving
IMPLEMENTASI MODEL PEMBELAJARAN LEARNING CYCLE 5E PADA MATERI HIDROLISIS GARAM DI KELAS XI MIPA SMAN 1 BENGKULU TENGAH TAHUN AJARAN 2018/2019
Authors: Safitri Isnaini , Handayani Dewi , Rohiat Salastri
Published: July 2021

This study aims to determine the effect of the implementation of the 5E Learning Cycle learning model on increasing mastery of concepts in the subject matter of salt hydrolysis. This research was conducted at SMAN 1 Bengkulu Tengah in the 2018/2019 class XI MIP academic year in one meeting. The trial implementation of the 5E Learning Cycle model uses a pre-experimental research design with the form of one-group pretest-posttest design. The study was  conducted in February 2019 at SMAN 1 Bengkulu Tengah. The population in this study were students of class XI MIPA in SMA Negeri 1 Bengkulu Tengah academic year 2018/2019 which amounted to 126 people. Determination of the study sample was carried out by testing the normality of the population. The study sample was taken using simple random sampling technique obtained by students of class XI MIPA 1, the number of students was 31 people. The instruments used consisted of student response questionnaire sheets and concept mastery assessment sheets. Student response data, mastery of concepts were analyzed descriptively and their improvement was analyzed by analysis of gain scores. The results showed that students gave a positive response to the 5E learning cycle model with an average value of 4.2 from a maximum value of 5 which indicated that students felt greatly helped by learning with the 5E Learning Cycle model. This is also supported by a high score increase on mastery of concepts which obtained an average value of 76.97 which is in the effective category. Based on the results of the study, it was concluded that the implementation of the 5E learning cycle model in the subject matter of effective salt hydrolysis to improve mastery of concepts in class XI MIPA SMAN 1 Bengkulu Tengah Academic Year 2018/2019.
PENGARUH MODEL PEMBELAJARAN FLIPPED CLASSROOM TERHADAP HASIL BELAJAR KIMIA SISWA PADA MATERI LARUTAN PENYANGGA DI SMAN 5 KOTA BENGKULU
Authors: Khumairah Rantika , Sundaryono Agus , Handayani Dewi
Published: July 2021

The purposes of this study is to know student learning outcomes of chemistry using flipped classroom learning model and know influence of flipped classroom learning model to on buffer solution. The study was conducted in February-March of 2019 in SMAN 5 Bengkulu City This study is pre-experimental design with one-grup pretes-posttest design. Population of this study is all of XI MIPA’s student which a total of 216 students with sample of this study is XI MIPA 5’s student which a total of 36 students. Technique of sampling in this study is used with purposive sampling technique. Instrument of this study used test of learning outcomes with 20 items pretest and posttest. Analysis of the data used are mean values, normality test, homogeneity test, and t-test to the student learning outcomes. Based on normality test and homogeneity test obtained that pretest and posttest have normal distribution and distributed to homogeneous. Average value of pretest and posttest are 60,1 and 80,0. The result of hypotheses using t-test showed that value of significance is 0.000 < 0.05, so flipped classroom model influenced of significance to student learning outcomes. The result of this study showed that flipped classroom learning model can positive influence to learning outcomes and increased student learning outcomes on buffer solution in XI MIPA 5 SMA N 5 Bengkulu city on academic year of 2018/2019.
Video Pembelajaran Fisika Sebagai Sumber Belajar Daring untuk Meningkatkan Motivasi Belajar Peserta Didik SMAN 9 Mataram di Masa Pandemi Covid-19
Authors: Widianta I Made Narta
Published: July 2021

This study aims to increase students' learning motivation during the Covid-19pandemic through physics learning videos. The research method used is qualitative research. This research was carried out during the odd semester of the 2020/2021 academic year at SMAN 9 Mataram for 35 students of class X MIA 3 through Google Classroom and Youtube. Data collection techniques using questionnaires, interviews and observations. Based on the results of the questionnaire analysis of students' learning motivation, it was found that the application of physics learning videos as a learning resource caused students to have an average score of 54 (high category). Some of the students, namely 40% have learning motivation in the very high category, 49% in the high category, and 11% in the medium category. Thus, it can be concluded that the application of physics learning videos as a learning resource for students of class X MIA 3 SMAN 9 Mataram during the Covid-19pandemic can generate motivation to learn physics with the average student having motivation to learn in the high category.
Strategi Modeling The Way untuk Meningkatkan Keterampilan Berbicara dan Hasil Belajar Peserta Didik di SD Negeri 3 Candisari Purwodadi Kabupaten Grobogan
Authors: Kurniati Hermin Dwi , Subekti Ervina Eka , Kuswandari Kuswandari
Published: July 2021

This study aims to apply the Modeling The Way strategy to improve speaking skills and learning outcomes in learning Theme 9 for fifth grade students of SD Negeri 3 Candisari. This research is a classroom action research conducted in three cycles. The subjects of this study were the fifth grade teachers and the fifth grade students, totaling 14 people. Collecting data through interviews, observation, and documentation. As for the validity of the data using source triangulation and techniques triangulation. The results showed an increase in speaking skills, namely: 1) In the first cycle the first meeting reached 35.71%, 2) the second meeting increased to 42.85%, 3) in the second cycle the first meeting increased to 50%, 4) the second meeting increased to 57.14%, 5) in the third cycle the first meeting increased to 71.42%, 6) the second meeting increased to 85.71%. For learning outcomes also increased, namely: 1) In the first cycle the first meeting reached 35.71%, 2) the second meeting increased to 42.85%, 3) in the second cycle the first meeting increased to 42.85%, 4) the second meeting increased to 42.85% the second meeting increased to 50%, 5) in the third cycle the first meeting increased to 78.57%, 6) the second meeting remained 78.57%. The conclusion of this study is that the Modeling The Way strategy can improve speaking skills and learning outcomes in fifth grade students. SD Negeri 3 Candisari in 2010/2021 academic year.
Optic Perineuritis as a Presenting Sign of Sarcoidosis
Authors: Roh Yu Jin , Kim Dong Hyun , Yang Hee Kyung , Hwang Jeong-Min
Published: July 2021

Purpose: To report a rare case of optic perineuritis as the presenting sign of sarcoidosis. Case summary: A 57-year-old man presented with decreased visual acuity and pain with extraocular movement in his left eye starting 2 weeks earlier. He had a history of asymptomatic optic perineuritis in that eye 18 months previously, which had improved after 1 month on oral prednisolone. His best corrected visual acuity had decreased to 20/50 and he also had relative afferent pupillary defect and color vision defects in the left eye. Slit lamp examination results were normal. There were no inflammatory reactions in the anterior chamber or vitreous. Fundoscopy showed optic disc edema. Orbital magnetic resonance imaging showed diffuse enhancement surrounding the left optic nerve. The serum levels of eosinophil cationic protein and angiotensin- converting enzyme were markedly increased. A chest radiograph showed bilateral hilar lymph node enlargement. A biopsy via endobronchial ultrasound-guided transbronchial needle aspiration revealed multifocal non-caseating granulomas. Acid fast bacilli stain showed no evidence of tuberculosis. Based on these findings, he was diagnosed with sarcoidosis. After treatment with high-dose intravenous methylprednisolone and subsequent tapering with oral prednisolone for 6 months, the visual acuity improved. Conclusions: Optic perineuritis can be the initial sign of sarcoidosis. Therefore, sarcoidosis should be considered in the differential diagnosis of optic perineuritis.