bluuebunny/crossref_metadata_2025 huggingface dataset:
Pedagogia da alternância e a formação de educadores/as: a experiência do programa girassol
Authors: De Oliveira Júnior Celso Eulálio , Reetz Alcione
Published: January 2021

Os educadores/as se constituíram como significativos sujeitos para a construção e fortalecimento da Pedagogia da Alternância e Educação do Campo. Contudo a formação desses profissionais ainda é um desafio a ser superado por esse movimento. Dessa forma, o objetivo deste trabalho foi caracterizar a formação dos educadores/as da Pedagogia da Alternância, através da experiência do Programa Girassol de formação continuada para atuar na Pedagogia da Alternância e Educação do Campo no município de Nova Venécia, Espírito Santo. Para sistematizar essa experiência, utilizamos a pesquisa qualitativa, documental, nos referenciando em Nosella (2014, 2007) e Begnami (2003). Utilizamos ainda a observação participante natural, na forma expressa por Gil (2008). Constatamos, que apesar dos avanços em relação a formação dos educadores/as que atuam na Pedagogia da Alternância e Educação do Campo no município, ainda persiste uma situação desafiadora em relação a ela, que ameaça a continuidade dessa pedagogia, sendo necessárias ações para garantir e fortalecer a formação dos educadores/as que atuam nessa modalidade.
Produção escrita na educação do campo: experiências, desafios e possibilidades
Authors: Gonoring Hehr Roseli , Foerste Erineu
Published: January 2021

Este artigo apresenta a investigação de práticas escolares de produção escrita em uma turma dos Anos Finais do Ensino Fundamental de uma escola campesina do município de Domingos Martins, Estado do Espírito Santo, Brasil. A partir do questionamento de como são as práticas escolares de produção escrita em uma escola do campo, e em diálogo com  os estudos teóricos de Freire (2013) e Arroyo (2007) explanamos as situações de opressão na Educação do Campo a partir do currículo; Bakhtin (2010, 2013) e Geraldi (2013) conduziram a análise das práticas escolares de produção escrita;  Brandão (2009) contribuiu para  pensarmos cultura e Candau (2012) fundamentou as reflexões sobre interculturalidade,  necessárias ao pensarmos a cultura escolar e a cultura da escola,  numa perspectiva de educação que considera a diversidade cultural, histórica e social dos sujeitos . Pesquisa fundamentada na abordagem qualitativa, conforme  preceitua Ludke e André (2006). O Estudo de Caso favoreceu a nossa participação no ambiente escolar, para registro e análise de práticas escolares voltadas à linguagem escrita. Os resultados da pesquisa demonstram que a escola do campo tem proporcionado práticas escolares diferenciadas, ligadas à realidade dos educandos. No entanto, as produções têm priorizado os textos pragmáticos e referenciais, em detrimento de produções de textos literários. A formação continuada de educadores tem contribuído para a reflexão e mudança nas práticas escolares de produção escrita.

Palavras-chave: Educação do Campo; Produção escrita significativa, currículo.
Reflexões sobre prática docentes na educação do campo do município de Japeri - Rio de Jeneiro
Authors: Paes Leme de Mello Amarildo , Aparecida Del Rio Benevenuto Mônica
Published: January 2021

Resumo: A formação docente e as práticas pedagógicas são os principais fatores no processo ensino-aprendizagem. Quando se trata de educação do campo, a necessidade da formação continuada para esses docentes se torna fundamental. Neste contexto, este artigo busca apresentar uma reflexão sobre a concepção de professoras de uma escola do campo do município de Jarperi/RJ sobre a formação continuada e as práticas docentes resultante desta formação. Dessa forma, o trabalho se caracterizou em uma pesquisa qualitativa devido as suas especificidades, também documental por fazer uso de referências publicadas por meios escritos e eletrônicos e, para o levantamento dos dados, a pesquisa de campo, onde foram realizadas entrevistas semiestruturadas com os sujeitos envolvidos. O resultado demonstrou que a professora que tem maior formação acadêmica, busca formação continuada e consegue enxergar a realidade do campo e procura entender as questões locais, numa proposta pedagógica que articula saberes e transcende a sala de aula. A professora com formação de nível Médio não busca uma formação continuada e não se envolve com o contexto vivido pela escola. Sua prática pedagógica reproduz o planejamento da Secretaria de Educação sem articulação com a realidade do campo. Assim, com base nestas práticas docentes distintas em um mesmo contexto, ressalta-se a importância da formação continuada do professor do campo em suas práticas pedagógicas.

 Palavras-chave: Práticas docente, educação do campo, formação continuada.
Quantum Learning dalam Perspektif Pendidikan Islam
Authors: Zayadi Ach
Published: January 2021

The learning approach with the concept of quantum learning is a concept holding a strong philosophy that learning is a lifelong activity, which is implemented in a fun way at a class and presented with a methodology that is based on a curriculum as a blend of academic skills, physical achievements, and life skills. At a glance, this quantum approach is quite relevant to the lifelong educational philosophy that became the foundation of Islamic Education. The nature of education of Qur’an (Islam) is “rabbany” based on the first verse in the first revelation. People who carry out are also called “rabbany” who are described by al- Quran with the characteristics include teaching the book of Allah, both written (Al Qur’an) and the unwritten (the universe), and study of it continuously. This literature review will reveal another perspective on the quantum approach in optical studies of Islam.
Keywords: Quantum Learning, Islamic education

Pendekatan pembelajaran dengan konsep quantum learning adalah sebuah konsep yang memegang kuat falsafah bahwa belajar adalah kegiatan seumur hidup, diimplementasikan dalam kelas dengan cara yang menyenangkan, serta disajikan pula dengan metodologi yang didasarkan pada kurikulum yang merupakan perpaduan antara keterampilan akademis, prestasi fisik, dan keterampilan hidup (life skills). Sekilas pendekatan quantum ini sangatlah relevan dengan falsafah pendidikan sepanjang hayat yang menjadi pijakan dalam pendidikan Islam. Sifat pendidikan al-Qur’an (Islam) adalah “rabbany” berdasarkan ayat yang pertama dalam wahyu pertama. Orang yang melaksanakan juga disebut “rabbany” yang oleh al-Qur’an dijelaskan cirinya antara lain mengajarkan kitab Allah, baik yang tertulis (al-Qur’an) maupun yang tidak tertulis (alam raya) serta mempelajarinya secara terus menerus. Kajian literatur ini akan menguak persfektif lain tentang pendekatan quantum dalam optik kajian Islam.
Kata Kunci: Quantum Learning, Pendidikan Islam
Pendidikan Karakter Bangsa
Authors: Machfudh Ahmed
Published: January 2021

Besides the efforts to enhance the knowledge of science and
technology as well as work ethic and competitiveness, the efforts
to establish the character and identity of nation are implemented
through the development of religion in the form of providing
education in order to realize an independent Indonesian society
that is advanced, noble, dignified, and civilized. The development
in the field of religion cannot be separated from the development
of education, especially religious education and education in
Islamicschool(madrasah)andotherreligiouspubliceducational
institutions. The development of the nation’s character is
directed to be part of efforts to achieve the vision of the national
development as it is stated in the Long Term Development
Plan of 2005-2025 namely to make Indonesia as a developed,
independent, and fair nation as the foundation for the next stage
of development toward fair and prosperous society in the NKRI
(a unitary state of Indonesia) based on the Pancasila and the
Constitution of the Republic of Indonesia 1945.
Keywords : education, character education, religious education, and
the nation’s character.

Upaya pembentukan karakter dan jati diri bangsa, di samping
peningkatan penguasaan dan ketrampilan di bidang ilmu
pengetahuandanteknologi sertapeningkatanetoskerjadandaya
saing, dilaksanakan melalui pembangunan agama dalam bentuk
penyelenggaraan pendidikan guna mewujudkan masyarakat
Indonesia yang mandiri, maju, berakhlak mulia, bermartabat,
danberadab.Pembangunanbidangagamatidakdapatdilepaskan
dari pembangunan pendidikan, khususnya pendidikan agama,
pendidikan keagamaan, dan pendidikan pada madrasah serta
lembagapendidikanumumlainnyayangbercirikhaskeagamaan.
Pembangunan karakter bangsa diarahkan menjadi bagian
yang tak terpisahkan dari upaya pencapaian visi pembangunan
nasional sebagaimana tertuang dalam Rencana Pembangunan
Jangka Panjang Tahun 2005-2025, yaitu mewujudkan Indonesia
sebagai bangsa yang maju, mandiri, dan adil sebagai landasan
bagi tahap pembangunan berikutnya menuju masyarakat adil
sebagai landasan bagi tahap pembangunan berikutnya menuju
masyarakat adil makmur dalam NKRI beradasarkan Pancasila
dan Undang-Undang Dasar Negara Republik Indonesia Tahun
1945.
Kata kunci: Pendidikan, pendidikan karakter, pendidikan agama,
karakter bangsa.
Dampak Pemikiran Ahli Ra'y Terhadap Hukum Islam Kontemporer
Authors: Syukur Taufik Abdillah
Published: January 2021

Some islamic experts, Ulama, say that the Islamic Shari’ah which
is contained in the Qur’an and Hadith can be understood its
contents. These islamic thinking methods are called “Ra’y” while
those involved are called “ahlial-ray”. They also use hadith as the
istinbath basis of Islamic law. Only in establishing the law, they
say that Nash Syar’I has a specific purpose and cumulatively
aims to bring benefit to the human being. The researcher will try
to reexamine the things related to Ahlual-Ray, Either thoughts
or istinbath methodology, then related with the impact on the
thoughts of contemporary Islamic law. This study includes the
type of library research which is descriptive analysis through a
socio-historical approach.
Keydords: Ra’y Expert, Islamic Law

Sebagian ulama berpendapat bahwa syari’at Islam yang terkandung
dalam al-Qur’an dan Hadits itu dapat dipahami isinya. Metode
pemikiran hukum Islam seperti ini disebut ‘ ra’y’, sedangkan
orang yang berkecimpung dalam hal tersebut dinamakan ahli alra'y.
Mereka juga menggunakan hadits sebagai dasar istinbath
hukum Islam. Hanya saja dalam menetapkan hukum, mereka
berpendapat bahwa nash syar’i itu mempunyai tujuan tertentu
dan secara kumulatif bertujuan mendatangkan kemaslahatan
bagi ummat manusia. Peneliti akan mencoba meneliti ulang halhal
yang terkait dengan ahlu al-ra'y, baik tentang pemikiran,
metodologi istinbath, untuk kemudian dihubungkan dampaknya
kepada pemikiran hukum Islam kontemporer. Penelitian ini
termasuk jenis penelitian kepustakaan (Library Research) yang
bersifat diskriptif analisis melalui pendekatan sosio-historis.
Kata kunci : Ahli Ra’y, Hukum Islam
A PROPORTIONAL ALLOCATION OF FORMATIVE AND SUMMATIVE ASSESSMENT: A Quest of Shaping an Effective Assessment Policy
Authors: Muttaqin Sabilil
Published: January 2021

Abstract
This paper outlines and discusses most of the literatures on formative and summative assessment. It considers some of the key features of both formative and summative assessment as a means of evaluating teaching and learning processes. This study suggests that both types of assessment should be proportionally designed and aligned with learning goals. More importantly, this study proposes three key aspects of assessment that should be considered in designing effective assessment policy: (a) assessment forms an integral part of planning, assessing, and reporting, (b) the use of assessment as a means to monitor the progress of student learning and achievement, (c) assessment as a tool to determine the effectiveness of teaching. The three aspects of assessment policy can help educational leaders to design a proportional formative and summative assessment for an effective assessment policy.

Abstrak
Artikel ini memaparkan dan mendiskusikan literatur-literatur tentang penilaian formatif dan sumatif. Artikel ini juga menyuguhkan gambaran penting penilaian formatif dan sumatif sebagai alat evaluasi pengajaran dan proses pembelajaran. Kajian ini menemukan bahwa kedua jenis penilaian tersebut harus didesain secara proporsional dan harus sejalan dengan tujuan pembelajaran. Lebih penting lagi, kajian ini menawarkan tiga aspek penting yang harus dipertimbangkan dalam merancang kebijakan penilaian yang efektif.: (a) penilaian harus membentuk sebuah bagian integral dari perencanaan, penilaian dan pelaporan, (b) penggunaan penilaian sebagai alat untuk memonitor progress pembelajaran siswa dan pecapaiannya, (c) penilaian sebagai alat untuk menentukan efektivitas mengajar. Tiga aspek kebijakan penilaian tersebut dapat membantu pemimpin pendidikan untuk merancang penilaian formatif dan sumatif yang proporsional untuk sebuah kebijakan penilaian yang efektif.
KEBIJAKAN PENDIDIKAN TENTANG SEKOLAH ISLAM ELIT DAN DAMPAKNYA TERHADAP MUTU DAN AKSES PENDIDIKAN SERTA TOLERANSI BERAGAMA
Authors: Faozan Ahmad
Published: January 2021

Abstract
This article discusses the policy of education on elite Islamic school in Indonesia and its impact to the quality and access of education and religious tolerance. The such policy education in this article is government policy on education affair. The elite Islamic schools are the excellent Islamic school founded by government such as Madrasah Aliyah Negeri Insan Cendekia in some provinces in Indonesia, or the excellent private school founded by society, organization or pioneering-international standard school/ state madrasah dissolved by the decision of the Constitutional Court (MK). The main focus of this article is analyzed by sociological perspective and also by library research and formulated as follows: what is government policies on elite schools? And what is the impact of education policies on elite schools to the quality and access of education and religious tolerance? This article answers these two questions.

Abstrak
Artikel ini membahas kebijakan pendidikan tentang sekolah elit di Indonesia dan dampaknya pada mutu dan akses pendidikan serta toleransi beragama. Kebijakan pendidikan yang dimaksud dalam tulisan ini adalah kebijakan pemerintah dalam bidang pendidikan. Sekolah Islam elit yang dimaksud adalah sekolah Islam unggulan yang dibiayai pemerintah seperti Madrasah Aliyah Negeri Insan Cendekia di beberapa daerah di Indonesia maupun sekolah Islam unggulan yang didirikan masyarakat, yayasan atau organisasi Islam serta madrasah negeri rintisan sekolah/madrasah bertaraf internasional yang telah dihapus melalui putusan Mahkamah Konstitusi. Pokok masalah dalam artikel ini akan ditelaah dengan menggunakan perspektif sosiologis dengan melakukan studi literatur atau kepustakaan. Fokus kajian masalah ini dirumuskan dalam rumusan masalah berikut. Bagaimana kebijakan pendidikan tentang sekolah elit? bagaimana dampak kebijakan pendidikan tentang sekolah elit pada mutu dan akses pendidikan serta toleransi beragama? Berpijak dari dua rumusan masalah tersebut, kajian dalam artikel ini dilakukan.
TRANSFORMISME PENDIDIKAN DI NEGARA MAJU: INISIATIF FILOSOFIS PENGEMBANGAN MUTU PENDIDIKAN DI INDONESIA
Authors: Arifin Zaenal
Published: January 2021

Abstract
Finland has been acknowledged as having the best education system in the world. Many countries, such as Australia, Japan and Singapore, adopted Finland education system. Those countries have reformed and transformed their education system, and now, those countries are listed in the best management and quality education countries. The integration among curricula, market and philosophical values of nation founding fathers as world view has resulted transformation of education. Programme for Internasional Student Assessment (PISA) 2019 assessed the quality of education in term of reading, math and science and made Indonesia ranked on the 72nd out of 77 countries. In other word, Indonesia is the 6th ranking from below. At the same time, Singapura took the runner up position. Indonesia has left behind from other countries, including Malaysia and Brunei. It is imperative for Indonesia to learn more to those countries which succeeded in designing the system of education. By doing this, Indonesia will be equal to neighboring countries.

Abstrak
Finlandia diakui memiliki sistem pendidikan terbaik di dunia. Banyak negara di dunia belajar dari kesuksesan Finlandia, seperti Australia, jepang dan singapura. Ketiga negara ini, telah melakukan reformasi bahkan transformasi pendidikan untuk memperbaiki sistem pendidikannya sehingga sekarang mampu menempatkan diri dalam jajaran negara-negara terbaik dalam manajemen mutu pendidikan. Sinergi aspek kebijakan, kurikulum dan pasar serta nilai-nilai filosofis sebagai pandangan hidup yang telah dilahirkan para pendiri bangsa telah melahirkan transformisme pendidikan. Pada tahun 2019, Programme for Internasional Student Assessment (PISA) yang merupakan lembaga survei kualitas pendidikan di dunia dari aspek kemampuan membaca, matematika, dan sains telah menempatkan Indonesia pada urutan 72 dari 77 negara. Jadi, Indonesia berada pada peringkat keenam dari bawah sedangkan Singapura berada pada posisi kedua terbaik dan juga jauh tertinggal di belakang negara-negara tetangga lainnya, seperti seperti Malaysia dan Bruai Darusaalam. Indonesia harus banyak belajar dari negera-negara yang telah sukses mendesain sistem pendidikan yang baik sehingga kualitas, mutu pendidikan dapat disejajarkan dengan negara-nega lainnya.
SENGKARUT FORMALISASI SYARIAH DI INDONESIA
Authors: Mahrusillah Mohamad
Published: January 2021

Abstract
This paper tries to trace the dispute (pro-konta) on sharia formalization in Indonesia and presents the description how far the sharia formalization is implemented. Regardless to the dispute, the difficulties to implement the formalization is no country in the world implement the sharia totally. This research is used social and historical approaches and also literary reviews on legislation, journal, quoting ulama’ ideas and their activities and others related opinions.

Abstrak
Artikel ini berupaya untuk melacak kekacauan (baca: pro-konta) mengenai formalisasi syariat di Indonesia, dan mencoba memberi gambaran seberapa jauh peluang formalisasi syariat ini disetujui. Namun terlepas dari adanya pro dan kontra mengenai gagasan formalisasi syariat, kesulitan dalam mewujudkan formalisasi tersebut adalah hingga saat ini tidak ada satu pun negara di dunia yang menerapkan formalisasi syariat secara utuh. Penelitian ini menggunakan pendekatan sosial historis dengan menggunakan penelitian kepustakaan melalui pengumpulan dan studi literatur, legislasi, jurnal, dan mengutip pendapat ulama dan aktivis serta pendapat terkait lainnya.
IJTIHAD ‘VIRTUAL’ DAN FIQIH CORONA: RESPON ULAMA INDONESIA DI MUSIM PANDEMI
Authors: Muhaimin Abdul Wafi
Published: January 2021

Abstract
Covid-19 has been announced as global pandemic by World Health Organization (WHO). All countries, including Indonesia, implemented the health protocols in preventing the spread of viruses. Among those protocols is social distancing either in lockdown or physical distancing. This policy disrupted the life order and habit, especially in religious ritual. The religious problems should be answered by the ulamas for the law certainty. In the normal situation, the discussion on fatwa is usually held by collective ijtihad (Ijtihad Jama’i). This way is done by MUI and its fatwa commission, NU and Its Bahtsul Masail, Muhammadiyah and Its Majlis Tarjih. Unfortunately, in covid-9 pandemic, the meeting for collective ijtihad is not easy to do because of the healthy protocol. Instead of that, the discussion to determine fatwa should be done as responding religious problems, but by virtual ijtihad via Zoom and others application, such as whatsapp groups. Therefore, this article discuss about the way ulamas responds the law-religious problems during Covid-19 pandemic.

Abstrak
Covid-19 telah ditetapkan sebagai pandemi global oleh World Health Organization (WHO) sehingga berbagai negara, termasuk Indonesia, menetapkan protokol kesehatan dalam upaya pencegahan penyebaran virus ini. Salah satunya adalah dengan melakukan social distancing baik dengan cara lockdown maupun hanya dengan melakukan physical distancing. Kebijakan ini tentu berpengaruh terhadap tatanan kehidupan manusia, termasuk dalam ritual keagamaan. Tentu persoalan keagamaan harus mendapatkan jawaban dari para ulama agar umat mendapatkan kepastian hukum. Problemnya adalah, setiap persoalan hukum biasanya dalam kondisi normal dilakukan dengan cara kolektif (ijtihad jama’i), baik yang dilakukan oleh MUI dengan komisi fatwanya, NU dengan Lembaga Bahtsul Masailnya, Muhammadiyah dengan Majlis Tarjihnya, dan ormas-ormas lainnya. Namun dalam kondisi seperti sekarang ini (masa pandemi Covid-19) tentu tidak mudah untuk dilakukan. Maka muncullah terobosan baru dengan cara memaksimalkan kecanggihan teknologi, sehingga persoalan keummatan tetap bisa direspon dengan baik melalui ijtihad ‘virtual’, baik dengan cara melalui aplikasi Zoom maupun melalui chatting dengan memaksimalkan group-group Whatsapp (WAG). Oleh karena itu, kajian ini akan membahas tentang bagaimana para kyai (ulama) merespons persoalan hukum selama pandemi Covid-19.
Metode Kiyai dalam Menanamkan Nilai-Nilai Pendidikan Agama Islam pada Santri Rehabilitasi Gangguan Jiwa
Authors: Darmawi Darmawi
Published: January 2021

Nilai-nilai agama Islam memuat aturan-aturan Allah yang antara lain meliputi aturan yang mengatur tentang hubungan manusia dengan Allah, hubungan manusia dengan manusia, dan hubungan manusia dengan alam keseluruhan. Manusia akan mengalami ketidaknyamanan, ketidakharmonisan, ketidaktentraman ataupun mengalami permasalahan dalam hidupnya, jika dalam menjalin hubungan-hubungan tersebut terjadi ketimpangan atau tidak mengikuti aturan yang telah ditetapkan Allah.
Complicaciones en nulíparas con episiotomía y sin episiotomía en el hospital Zacarias Correa Valdivia, Huancavelica
Authors: MENDOZA VILCAHUAMAN JENNY , NICOLE DE LA CRUZ KEY , MUÑOZ DE LA TORRE ROSSIBEL JUANA
Published: January 2021

Este trabajo tuvo como objetivo determinar las complicaciones presentes en nulíparas con episiotomía y sin episiotomía en el hospital Regional Zacarías Correa Valdivia Huancavelica, 2017-2018.  El estudio fue; descriptivo, retrospectivo de corte transversal, el Método fue Inductivo, descriptivo, con una muestra de 145 gestantes nulíparas que se atendieron su parto (85 con episiotomía y 60 sin episiotomía). Los resultados fueron.  De los 145 partos atendidos en nulíparas, La complicación que predomino fue edema 41,4%, seguido de la hemorragia 40,7%, así mismo el desgarro de I grado 22,8%, dehiscencia con 21,4% y en menor porcentaje el hematoma 13,8%, infección 11,7% y dolor perineal 7,6%. La complicación más predominante en las nulíparas con episiotomía fue la hemorragia 47,1%, desgarro de I grado y dehiscencia en 32,9%; y las complicaciones en las nulíparas sin episiotomía fue el edema 55% y hemorragia 31,7%. Conclusión: No hubo diferencia entre las complicaciones presentes en nulíparas con y sin episiotomía, estando presente complicaciones inmediatas y mediatas como; edema, hemorragia y desgarros de I grado.
Simultaneous determination of sixteen illegal dyes in foodstuffs by liquid chromatography tandem mass spectrometry
Authors: Vu Lan Phuong , Nguyen Thi Ha Binh , Doan Thu Huyen , Le Thi Kim Van , Tran Cao Son , Le Thi Hong Hao ,   Hanoi University of Pharmacy,   National Institute for Food Control,   Hanoi University of Pharmacy,   National Institute of Medicinal Materials,   National Institute for Food Control,   National Institute for Food Control
Published: January 2021

A liquid chromatography tandem mass spectrometry method using positiveelectrospray ionization source (ESI+), multiple reaction monitoring (MRM) mode has been developed and validated to simultaneously determine 16 illegaldyes in different food groups. The method was based on the extraction of analytes from samples using QuEChERS technique. After being cleaned up d-SPE tube with mixture of MgSO4, PSA and C18 sorbent, the extract was analyzed by LC-MS/MS. Each illegaldyewas characterized by a precursor ion and two product ions. The method allows the screening of the simultaneous presence of 16 illegal substances at the lowest concentration of 5µg/kg forrhodamin B, crystal violet, chrysoidine G, auramine O, sudan black B, pararosanilin and of 50µg/kg for remaining substances. The specificity of the methodmet 657/2002/EC requirements. The methodwas linear in the range from 1-1000µg/L and themethod detection limit was from 5-50 µg/kg, the recovery ranged from 73-104% and the relative standard deviations were lower than 16.4%. The method has been applied to analyze 30 samples of dried beef, dry chicken, chutney, chili powder and food coloring samples. Rhodamine B, sudan I and auramine O were detected in two chili powder and 04 food coloring samples.
Simultaneous determination of seven glucocorticoids in cosmetics by liquid chromatography tandem mass spectrometry
Authors: Bui Quang Dong , Vu Thi Phuong , Tran Thi Van Anh , Tran Cao Son ,   National Instriture for food control,   Vietnam University of Traditional Medicine, Hanoi,   Vietnam University of Traditional Medicine, Hanoi,   National Institute for Food Control
Published: January 2021

A rapid high-performance liquid chromatography method with electrospray ionization and tandem mass spectrometry detection (LC-ESI-MS/MS) was developed and validated for the simultaneous determination of 7 glucocorticoids (GC) including hydrocortisone acetate (HCA), cortisone acetate (COA), prednisone (PDS), prednisolone (PDL), methyl prednisolone (MPL), dexamethasone (DEX) and fluocinolone acetonide (FLA), which may be illegally blended in transdermal cosmetics. Sample preparation step consists of the extraction with ethyl acetate followed by centrifugation and filtration. The extract was dried, diluted and cleaned using C18 SPE column. The compounds were separated by reversed-phase chromatography with mobile phase containing 0.1% formic acid in water and acetonitrile in gradient condition. The method was validated at the validation level from 0.12 to 6.0 µg/g. The LODs for PDS, PDL and FLA were 0.3 µg/g and for the others were 0.03 µg/g, and LOQs were 0.6 and 0.12 µg/g, respectively. The reproducibility was satisfied with the relative standard deviation below 23% and the recoveries were in the range of 74.3-106.7% meeting AOAC requirements. The studied glucocorticoids were detected in about 20% of tested samples collected in Hanoi with the level contents in the range from 0.18 to 16.2 µg/g.
Simultaneous determination of sibutramine and its derivatives in weight loss dietary supplements by LC-MS/MS
Authors: Duong Thi Mai Hoa , Pham Thi Ngoc Mai , Cao Cong Khanh , Nguyen Thi Hong Ngoc , Mac Thi Thanh Hoa , Tran Hung Son , Nguyen Thi Van Anh , Le Thi Hong Hao ,   National Institute for Food Control, Hanoi,   University of Science, Vietnam National University, Hanoi,   National Institute for Food Control,   National Institute for Food Control,   National Institute for Food Control,   National Institute for Food Control
Published: January 2021

The liquid chromatography tandem mass spectrometry method (LC-MS/MS) was used to determine the content of sibutramine (SB), N-desmethyl sibutramine (DSB) and N-didesmethyl sibutramine (DDSB) illegaly mixed in weight loss dietary supplements. Sibutramine and its derivatives were extracted by methanol; impurities in the extract were removed by graphitized carbon black (GCB) adsorbent. The chromatographic separation of analytes took place on C18 column (100 mm x 2.1 mm, 3.5 µm) with a gradient mobile phase of acetonitrile and 2 mM ammonium acetate in 0.1% formic acid solution. Multiple reaction monitoring (MRM) in the positive mode was used to detect and quantify SB, DSB and DDSB at m/z 279.9/124.8; 266.0/124.8 and 252.1/125.0, respectively. The method was validated following the AOAC requirements for specificity, repeatability and recovery. Calibration curves lineared from 0.002 to 0.1 µg/mL for SB, DSB and DDSB. The method was successfully applied to determine the content of SB, DSB and DDSB in weight loss dietary supplements that were randomly collected from phamacies in Hanoi of three formulations of hard capsule, soft capsule and teabag. The results shown that six samples had SB and DSB with the content in the range of 0.817 - 31.7 mg/g.
Optimization of spectrophotometric method for determination nattokinase activity in dietary supplements
Authors: Nguyen Thi Dieu Thu , Hoang Viet Dung , Nguyen Thi Hong Ngoc , Vu Thi Thanh An , Mac Thi Thanh Hoa , Cao Cong Khanh , Tran Hung Son ,   Vietnam Millitary Medical University, Hanoi,   Vietnam Millitary Medical University, Hanoi,   National Instriture for food control,   National Instriture for food control,   National Institute for Food Control,   National Institute for Food Control,   National Institute for Food Control
Published: January 2021

Nattokinase is an enzyme with a strong fibrinolytic activity that can be used for preventing thrombolytic diseases. The fibrinolytic activity of the Nattokinase in dietary supplements is determined by spectrophotometric method. In this study, the conditions of the assay were examined and finally optimized as pH: 8.5, reaction temperature: 40oC, and reaction time: 60 minutes. The proposed method was validated and successfully applied to determine the Nattokinase activity in 10 dietary supplements. The results showed that the proportion of measured activity compared to label product activity were within in the range 79.1 - 98.0%. The effect of herbal compounds and excipients on Nattokinase activity were also surveyed. From the evaluated results and application to commercial samples, this method will be a valuable contribution to quality control of dietary supplement products containing Nattokinase.  
Tình trạng nhiễm độc tố vi nấm trong thực phẩm tại một số tỉnh, thành phố địa phương miền Bắc Việt Nam năm 2019
Authors: Nguyễn Thị Hà Bình , Nguyễn Ngọc Sơn , Nguyễn Thị Lan , Trần Cao Sơn ,   Viện Kiểm nghiệm an toàn vệ sinh thực phẩm quốc gia,   Viện Kiểm nghiệm an toàn vệ sinh thực phẩm quốc gia,   Viện Kiểm nghiệm an toàn vệ sinh thực phẩm quốc gia,   Viện Kiểm nghiệm an toàn vệ sinh thực phẩm quốc gia
Published: January 2021

Nghiên cứu đã thực hiện đánh giá hàm lượng độc tố vi nấm aflatoxin, ochratoxin A, zearalenone, deoxynivalenol and fumonisin B1 trong một số sản phẩm thực phẩm bao gồm bánh kẹo, bột thính trộn, bột ngũ cốc dinh dưỡng, thực phẩm bảo vệ sức khỏe, ngũ cốc nguyên liệu và gia vị các loại. Mẫu thực phẩm được chiết và làm sạch bằng phương pháp QuEChERS, sau đó dịch chiết được phân tích bằng thiết bị sắc ký lỏng khối phổ hai lần (LC-MS/MS). Giới hạn phát hiện của phương pháp cho aflatoxin, fumonisin B1, ochratoxin A, deoxynivalenol, zearalenone lần lượt là 0,5; 30; 0,5; 60; 3,0 µg/kg. Độ thu hồi của phương pháp trong khoảng 70 - 110%. Độ lệch chuẩn tương đối RSD trong khoảng 5,1 - 13%. Kết quả khảo sát 300 mẫu thực phẩm các loại cho thấy có 43 mẫu nhiễm độc tố vi nấm chiếm tỷ lệ 14,3%, chủ yếu tập trung vào nhóm ngũ cốc chưa qua chế biến. Trong đó phát hiện 10 mẫu gia vị, 04 mẫu nguyên liệu thực phẩm, 01 mẫu kẹo, 01 mẫu bột ngũ cốc dinh dưỡng, 01 mẫu thực phẩm bảo vệ sức khỏe phát hiện có nhiễm aflatoxin, ochratoxin A vượt ngưỡng tối đa cho phép của Bộ Y tế theo quy chuẩn QCVN 8-1:2011/BYT.
Hoạt tính kháng khuẩn và kháng nấm của cao chiết ethanol một số loài thảo dược
Authors: Nguyễn Như Ngọc , Vũ Thị Nguyệt Minh , Phùng Thị Tuyến , Nguyễn Thị Hương Lan ,   Đại học Lâm Nghiệp Việt Nam, Hà Nội, Việt Nam,   Viện Kiểm nghiệm thuốc Trung ương, Hà Nội, Việt Nam,   Đại học Lâm Nghiệp Việt Nam, Hà Nội, Việt Nam,   Đại học Lâm Nghiệp Việt Nam, Hà Nội, Việt Nam
Published: January 2021

Mục tiêu của nghiên cứu này nhằm xác định và đánh giá hoạt tính kháng khuẩn, kháng nấm và xác định sự có mặt của một số hợp chất có hoạt tính trong cao chiết của ​​một số loài cây dược liệu như Trầu không (Piper betle L.), Hành tây (Allium cepa L.), Hành tím (Allium ascalonium L.), Tỏi (Allium sativum L.), Nghệ (Curcuma longa L.), Lá mơ (Paederia Tomentosa L.), Sài đất (Wedelia chinensis M..) và Cỏ hôi (Chromolaena odorata L.). Cao chiết ethanol từ mẫu của các loài thảo dược này đã được xác định khả năng kháng với một số chủng vi khuẩn như: Escherichia coli T1, Bacillus cereus M1; Salmonella sp. ST; Shigella sp. AT và một chủng nấm Aspegillus flavus KN bằng phương pháp khuếch tán đĩa thạch. Kết quả cho thấy cao chiết ethanol từ cả 8 loài thảo dược đều thể hiện ức chế sự phát triển của tất cả các chủng vi sinh vật thử nghiệm ở các mức khác nhau. Cao chiết từ trầu không và sài đất cho thấy hiệu quả kháng vi sinh vật cao nhất. Kết quả định tính sự có mặt của các hợp chất thứ cấp có hoạt tính kháng khuẩn cho thấy: Với mẫu sài đất, cao chiết có chứa các hợp chất: tannin, flavon, cacbohydrat, protein và tinh dầu. Trong cao chiết từ trầu không, các hợp chất bao gồm phenol, tannin, saponin, cacbohydrat, protein, nhựa và tinh dầu.
The situation of metacercariae infection in freshwater fishes in Binh Dinh and Bac Giang province, 2016 - 2017
Authors: Nguyen Thi Thanh Huyen , Le Thanh Long , Tran Thi Sao Mai , Nguyen Thanh Trung , Nguyen Thi Huong Binh , Nguyen Thu Huong ,   National Institute for Food Control,   National Instriture for food control,   National Instriture for food control,   National Instriture for food control,   National Institute of Malariology, Parasitology and Entomology,   National Institute of Malariology, Parasitology and Entomology
Published: January 2021

A cross-sectional study was applied in oder to evaluate the situation of metacercariae infections in freshwater fishes in six communes of Bac Giang and Binh Dinh province from 2016 to 2017. The sample size was of 400 freshwater fishe samples. The results showed that: (1) In Bac Giang province, metacercariae was found in 70% of Hypophthalmichthys molitrix, 62.5% of Carassius auratus, 25% of Hemiculter leucisculus, 95% of Toxabramis houdemeri, 85% of Cultrichthys erythropterus, 12.5% of Ctenopharyngodon idellus and 62.5% of Cyprinus carpio samples; and (2) In Binh Dinh province, metacercariae was found in 42.5% of Hypophthalmichthys molitrix, 95% of Carassius auratus, and 20% of Hemiculter leucisculus samples.
Development of qualitative methods of bifidobacterium bifidum in probiotic with Real-time PCR method
Authors: Pham Nhu Trong , Le Thanh Long , Nguyen Thanh Trung , Ta Thi Yen , Pham Thi Loan , Nguyen Thi Xuan Huong ,   National Instriture for food control,   National Instriture for food control,   National Instriture for food control,   National Instriture for food control,   National Instriture for food control,   National Instriture for food control
Published: January 2021

Bifidobacterium strains with probiotic effects have been widely used in dairy products, food additives and pharmaceuticals. Especially, Bifidobacterium bifidum (B. bifidum) is usually presented into food products such as functional food. However, it is difficult to detect, and quantify B. bifidum in a sample with a combination of different probiotics. In Vietnam, there is no official standard method to identify and quantify B. bifidum in the sample with the mix of probiotic species. To fulfil the requirements of a robust quality management, we have developed a quantitative real-time PCR assay based on groEL gene for accurate identification and quantification of Bifidobacterium bifidum. The developed assay allows an unambiguous speciesspecific detection. We built the real-time PCR method to detect and identify B. bifidum in functional and supplemented food with specific up to 100% and reproducibility (SR<0.25) suitable with Annex F AOAC: 2016. This real-time PCR method is rapidly and effectively than conventional method. It takes only 24 hours to detect and identify B. bifidum in compare with at least a period of 3-5 days for conventional methods. The low quantitative limit is 105 CFU/g/mL, which is consistent with probiotic and powdered milk products with a declared quality of more than 106 CFU/g/mL.
Capillary electrophoresis with capacitively coupled contactless conductivity detection (CE-C4D) and some applications in food analysis
Authors: Pham Thi Ngoc Mai , Pham Tien Duc , Dang Thi Huyen My , Le Thi Hong Hao , Nguyen Van Anh , Nguyen Thi Anh Huong ,   VNU University of Science - Vietnam National University, Hanoi,   VNU University of Science - Vietnam National University, Hanoi,   VNU University of Science - Vietnam National University, Hanoi,   VNU University of Science - Vietnam National University, Hanoi, National Institute for Food Control,   Hanoi Metropolitan University,   Vietnam National University, Hanoi
Published: January 2021

This article introduces capillary electrophoresis using capacitively coupled contactless conduction detector (CE-C4D) and several applications that were developed for food analysis in Vietnam. The target analyte groups include: oxalate, sweeteners (acesulfam potassium, aspartame, cyclamate, saccharine) and food preservation (citric, benzoic and sorbic acids). This study aims to develop simple, easy to operate analytical procedures that are suitable for quick analysis or screening in food analysis in field or at local laboratories. The obtained results were compared with those measured by conventional standards method (HPLC) and proved the high reliability of CE-C4D method.
Simultaneous determination some of b group vitamins in nutritional products by liquid chromatography tamdem mass spectrometry following enzymatic hydrolysis
Authors: Le Thi Thuy , Vu Thi Trang , Tran Hoang Giang , Tran Mai Van , Le Thi Hong Hao ,   National Institute for Food Control,   National Institute for Food Control,   National Institute for Food Control,   HaNoi Medical Universit,   National Institute for Food Control
Published: January 2021

Liquid chromatography tandem mass spectrometry (LC-MS/MS) method was developed for the simultaneous qualification of relevant forms of B group vitamins including vitamin B1, B2, B3 and B6 in nutritional products. Samples are hydrolyzed by enzymatic digestion at 37ºC in the shaking water bath within approximately 12 to 14 hours. Papain and α-amylase enzymes were used to hydrolize the protein and complex carbohydrate. Acid phosphatase was used to cut phosphoryl links to form free vitamin forms. The separation was achieved on a C18 column (100mm×2.1mm×1.7μm). Analytes were eluted with the mobile phase of 10 mM ammonium formate and methanol by gradient program at a flow rate of 0.15 mL/min. The calibration curves ranged from 0.2 to 2000 ng/mL with the correlation coefficients > 0.998. Limits of detection and quantification of method ranged from 2.7 to 3.8 μg/100g and 9.1 - 12.6 μg/100g, respectively. The method was validated at three different concentrations with the recovery of 80 - 110%, relative standard deviation of repeatability, RSDr %, of 2.61 - 4.69%, and intermediate reproducibility, RSDR% of 3.40 - 9.69%. The method was applied to simultaneously determine the four water soluble vitamins in several of nutritional products.  
Method validation for simultaneous quantification of whey proteins in dietary supplements by HPLC
Authors: Nguyen Thi Hong Ngoc , Mac Thi Thanh Hoa , Vu Thi Thanh An , Pham Thi Thanh Ha , Cao Cong Khanh , Le Thi Hong Hao ,   National Institute for Food Control,   National Institute for Food Control,   Hanoi University of Pharmacy,   Hanoi University of Pharmacy,   National Institute for Food Control,   National Institute for Food Control
Published: January 2021

A HPLC method has been validated for simultaneous determination of Alpha-lactalbumin (α- LA) and Beta- lactoglobulin (β-LG) contents in dietary supplements by HPLC-PDA. The method was carried out in C18 column with a gradient of 0.1% TFA/ water – 0.1% TFA/ acetonitrile as mobile phase. The proteins were detected at 215 nm wavelength within 50 minutes. The method was validated in specificity, linearity, precision and accuracy; and then was applied to analyze several random dietary supplements.
Determination of iodine content in milk and food supplements by inductively coupled plasma mass spectrometry (ICP-MS)
Authors: Dinh Viet Chien , Pham Cong Hieu , Nguyen Bao Thoa , Nguyen Minh Chau , Le Van Ha , Vu Thi Bich Phuong , Nguyen Van Ri , Nguyen Thi Anh Huong , Le Thi Hong Hao ,   National Institute for Food Control,   National Institute for Food Control,   National Institute for Food Control,   National Institute for Food Control,   National Institute for Food Control,   Faculty of Chemistry, University of Science, Vietnam National University - Hanoi,   University of Science, Vietnam National University - Hanoi,   University of Science, Vietnam National University - Hanoi,   National Institute for Food Control, University of Science, Vietnam National University - Hanoi
Published: January 2021

The determination of iodine in milk and food supplements by inductively coupled plasma mass spectrometry (ICP-MS) was investigated. Several parameters of the equipment were optimized automatically such as power of radio frequency, nebulizer gas, and voltage of ion lens. Iodine was extracted from samples by using 2% HNO3 with ultrasonic at 80ºC. Sample solutions were adjusted to the pH of 9÷10 by using ammonium hydroxide, and then filtered by using a 0.45 µm membrane before being analyzed by means of ICP-MS. The method has good repeatability and high recovery efficiency that are suitable for the determination of iodine in milk and food supplements.
ECONOMIC DISPATCH - A COMPARATIVE STUDY
Authors: H. APOORVA , SINHA GARIMA , DAM PUNAM , PRADHAN AMRITA , K. RRAJENDER REDDY
Published: January 2021

In this paper we are comparing the widely used Heuristic Method and Genetic Algorithm with a faster and effective non-iterative “λ-Logic Based” algorithm for ED (Economic Dispatch) of Thermal Units. The non-iterative method uses pre-prepared data to obtain the solution for a specified power demand. Genetic Algorithm performs directed random searches through a given set of alternative with the aim of finding the best alternative with respect to the given criteria of goodness. In this paper ED problem is solved using iterative method by Heuristic method , Non-iterative approach by “ƛlogic Based” technique and genetic Algorithm approach (GA) .The proposed algorithms are tested on 3 and 38 bus system using MATLAB software and the results reported in the paper.
MODELING AND SIMULATION OF ROTOR FLUX OBSERVER BASED INDIRECT VECTOR CONTROL OF INDUCTION MOTOR DRIVE USING FUZZY LOGIC CONTROL
Authors: CHANDRA B. MOULI , KALYANI S.TARA
Published: January 2021

The indirect vector controlled inductor motor (IM) drive involves decoupling of the stator current into torque and flux producing components. This paper proposes the implementation of fuzzy logic control scheme applied to a two d-q current components model of an induction motor. A Fuzzy logic Controller is developed with the help of knowledge rule base for efficient and robust control. The performance of Fuzzy Logic Controller is compared with that of the PI controller with rotor flux observer in terms of the settling time and dynamic response to sudden load changes. The harmonic pattern of the output current is evaluated for both fixed gain proportional integral controller and the Fuzzy Logic based controller. The performance of the IM drive has been analyzed under steady state and transient conditions. Simulation results of both the controllers are presented for comparison.
EFFECT OF BALL MILLING ON PEAK CURRENT AND EQUIVALENT SERIES RESISTANCE OF METAL OXIDE BASED ELECTROCHEMICAL DOUBLE LAYER CAPACITOR
Authors: SINGH ATUL KUMAR , DHIMAN ANKIT , KAMAL ANAM
Published: January 2021

Recently, advances have been made in improving both energy and power density of energy storing devices. Electrochemical Double Layer capacitor (EDLC) is one of the technologies that we are looking forward to fulfill the low power- low energy applications such as memory back up. ELDC is mainly a pulse power device even though it is seen as a replacement to battery in low power applications. At present EDLC technology is under development stage. Power density, energy density, specific capacitance, internal resistances are required to be improved. Electrochemistry plays a crucial role in the storage as well as in the generation of energy. Hence, the particles size and distribution are need to be optimized. Ball milling is the tool for optimizing the size of the components used to make the EDLCs. Ball milling has significant effect on the various parameters of the EDLC. It was found that as we increase the time of ball milling the Equivalent Series Resistance (ESR) decreases and the peak current increases. But he changes are significant for higher time of ball milling.
APPROXIMATION OF HYSTERESIS DENSITY FUNCTION IN STRETCH SENSOR
Authors: VIBHUTE VIPIN S. , KSHIRSAGAR ABHAY
Published: January 2021

Stretch SensorTM developed by Images Scientific Instruments Inc, USA, is a unique polymer component that changes resistance when stretched. When sensor is stretched and released it exhibits hysteresis and large relaxation time. For identification of hysteresis and relaxation, Preisach model is a very well-known method. Experiments are carried out using tension tester and the experimental data is used for identification. Modified Preisach model is used for relaxation identification and the experimental data is discretized for analysis of relaxation. Identification is based on first reversal curve of major hysteresis loop and noise error of sensor. It has been observed that if sensor is used in pre-stretch conditions, relaxation time is reduced. Also more the iterations of stretch, hysteresis is reduced and sensor output error is also reduced. Hysteresis and relaxation time cannot be eliminated because they are inherent properties of polymer but can be compensated under specific conditions. Compensation is useful for calibration of the sensor.
IMPACT OF METAL SOURCE/DRAIN CONTACTS ON GE-ON INSULATOR (GEOI) MOSFETS
Authors: MONDAL CHANDRIMA , BISWAS ABHIJIT
Published: January 2021

This paper presents the effect of source/drain metal contacts on the electrical behavior of GeOI MOSFETs. The band diagram and current-voltage characteristics of the MOSFET are obtained using SILVACOATLAS, a 2D numerical device simulator, for various metals having a range of work function values. Our investigation reveals that the device using metals having a work function value more than 5 eV exhibits enhanced ON current, transconductance, intrinsic voltage gain, and also reduced subthreshold slope and OFF current.
STRENGTH PREDICTION OF DIFFERENT ORIENTATION UNIDIRECTIONAL GLASS FIBER LAP JOINTS
Authors: SANTOSH R. , KIRAN B.
Published: January 2021

Composite materials have made way to various fields, including aerospace structures, underwater vehicles, automobiles and robot systems. Due to the high strength to weight ratio of composites, they serve as a suitable alternative to metals, therefore making the need for a reliable database of structural design more important. Most of the modern civilian and military aircraft use composite materials for their primary structural components (in addition to metals). One of the key areas in composite structural design involves the tensile strength of joints. In the present work, the lap joints fabricated from different orientations of GFRP (Glass fiber reinforced polymer) specimens are subjected to tensile test. The effect of fibre orientation on the tensile strength of lap joint is investigated both experimentally and computationally using conventional software package. The experimental results are compared with FEA using conventional software package ANSYS.