bluuebunny/crossref_metadata_2025 huggingface dataset:
Programação fetal e as consequências no desenvolvimento da progênie – uma revisão
Authors: Klein John Lenon , Adams Sander Martinho , Alves Filho Dari Celestino , Brondani Ivan Luiz , Pizutti Luiz Ângelo Damian , Antunes Dieson Pansiera , Poletto Vitória , Karsten Micheli dos Santos , Bem Pedro Henrique Tonetto de , Mello Derly Adryan da Silva
Published: October 2021

O objetivo deste trabalho foi, através de uma revisão de literatura, identificar as principais alterações fisiológicas e comportamentais causadas pela programação fetal que afetam a saúde e o desempenho da progênie na vida pós-natal. Dentre os inúmeros fatores que alteram a formação fetal, a nutrição materna na gestação tem sido fortemente referenciada nas pesquisas recentes. A nutrição materna na gestação pode alterar de inúmeras formas a formação fetal, de forma que o feto se adapte o mais rapidamente possível ao ambiente uterino, sendo essas mudanças perceptíveis durante a vida adulta da progênie. De modo geral, a literatura sugere que a restrição materna na gestação pode promover mudanças fisiológicas e funcionais nos órgãos e tecidos do feto, preparando o organismo para sobreviver em ambientes desafiadores também na vida pós-natal. Além disso, indivíduos que experimentaram ambientes restritos durante a formação fetal, apresentam maior procura por alimento e comportamentos psicossociais alterados, tais como reações de medo, isolamento e reatividade. A maior eficiência produtiva e consequentemente menor idade de abate da progênie tem sido associada a melhor nutrição materna durante a gestação, uma vez que esses indivíduos possuem formação fetal adequada e, portanto, maior capacidade metabólica dos nutrientes em sistemas intensivos de produção que almejam o máximo desempenho animal.
O ensino da Saúde do Trabalhador nos cursos de graduação em saúde de uma universidade federal
Authors: Souza Diego de Oliveira
Published: October 2021

Apesar de ser um campo relativamente novo, a Saúde do Trabalhador suscitou debates importantes para a Reforma Sanitária brasileira, o que implicou novas possibilidades e desafios para a formação de profissionais de saúde no Brasil. Tendo esse contexto em vista, esse estudo buscou analisar o ensino da Saúde do Trabalhador nos cursos de graduação em saúde da Universidade Federal de Alagoas (Ufal). Trata-se de um estudo qualitativo, descritivo, de base documental. Foram analisados os Projetos Pedagógicos dos Cursos de saúde da Ufal. Contatou-se que três desses cursos possuem disciplinas ou módulos relacionados à Saúde do Trabalhador. A pouca amplitude que o campo em questão possui no ensino em saúde pode estar associada à sua pouca difusão pela rede de saúde, figurando como atenção especializada, quando deveria ser transversal ao sistema.
O uso do Papacárie® como estratégia do controle do estresse na odontopediatria
Authors: Nogueira Ellen Cristina Paiva , Bussadori Sandra Kalil , Santos Elaine Marcílio , Imparato José Carlos P. , Rezende Karla Mayra
Published: October 2021

O estresse e ansiedade faz parte do comportamento humano. É uma resposta normal e saudável por parte da criança frente a uma situação diferente. Para isso, as técnicas de adaptação do comportamento, baseada em princípios científicos, auxiliam o profissional na condução do tratamento odontológico. Porém com a declaração da Organização Mundial de Saúde sobre a pandemia da doença causada pelo novo coronavírus (COVID-19), os tratamentos odontológicos eletivos foram postergados e a rotina odontológica foi alterada, afetando também o manejo comportamental. Baseado nessa situação, o objetivo desse trabalho foi realizar uma revisão narrativa de literatura sobre o uso do Papacárie como forma de gestão do comportamento da criança no retorno dos atendimentos odontológicos. Sabendo que esse material faz parte da técnica minimamente invasiva para remoção do tecido cariado, facilitando a remoção da dentina infectada e assegurando ao paciente um maior conforto quando comparado ao método convencional sem a necessidade do uso de anestesia. Assim, após a pesquisa na base de dados Pubmed e análise dos artigos concluímos que ao ser comparado com o método convencional, a utilização do papacárie no tecido cariado apresenta menor sensibilidade durante o tratamento, reduz o risco de exposição pulpar e não causa danos aos tecidos sadios. Portanto, quando corretamente indicada, a técnica só tem a melhorar o atendimento odontológico, o comportamento da criança e a aceitação do paciente e responsáveis podendo ser uma alternativa na primeira consulta como forma de tratamento e controle do estresse da criança.
Efeito da música na modulação autonômica da frequência cardíaca em cardiopatas
Authors: Pires Victoria Ribeiro , Silva Fernando Seiji da , Accioly Marilita Falângola , Meneguci Joilson , Espindula Ana Paula , Silva Luciana Duarte Novais
Published: October 2021

A música ocasiona diferentes respostas fisiológicas, algumas delas são alterações na pressão arterial, na frequência cardíaca e respiratória. Na literatura pesquisada foram encontrados poucos estudos que avaliam os efeitos da música na modulação autonômica cardíaca, sobretudo em pacientes cardiopatas ativos. Assim, o objetivo do presente estudo foi avaliar a modulação autonômica da frequência cardíaca sob o efeito de estímulo musical, por meio da análise da variabilidade da frequência cardíaca pelos métodos lineares e não-lineares. Metodologia: Participaram do estudo 11pacientes cardiopatas ativos. Os voluntários permaneceram, antes do início do teste, em repouso por cinco minutos e 30 segundos e foram expostos a quatro músicas com ritmos diferentes, de forma aleatória, durante cinco minutos e 30 segundos cada uma; com um intervalo de 15 segundos entre elas. Foram analisados os índices lineares e não lineares, estatísticos e geométricos no domínio do tempo e os índices no domínio da frequência. Para análise dos dados foi realizado o teste de Friedman, com post-teste de Bonferroni, com nível de significância de 5%. Resultados: Foram encontrados valores médios de batimentos cardíacos repetitivos significativamente maiores (p<0,05) durante a música "Send my love" quando comparado ao repouso. Foi observado que não foram encontrados valores estatisticamente significantes nos diferentes espectros de potência, na razão BF/AF e nos índices não-lineares, quando comparadas as diferentes exposições musicais e ao repouso. Conclusão: Os índices de variabilidade de frequência cardíaca não foram alterados pela exposição musical nessa população estudada.
Uso de aminoquinolinas (Cloroquina e Hidroxicloroquina) no tratamento da COVID-19: uma revisão sistemática
Authors: Lima Luan Victor Almeida , Santos Filipe Saboya , Alves Nataly Abreu , Alves Sabrina Sales , Melo Iury Magalhães Dutra de , Bandeira Tereza de Jesus Pinheiro Gomes
Published: October 2021

A pandemia da COVID-19, causada pelo vírus SARS-COV-2, é uma doença infecciosa que até o momento atual não há um tratamento eficaz que reduza a mortalidade dos pacientes. A Hidroxicloroquina (HCQ) e a Cloroquina (CQ) são fármacos derivados da aminoquinolina usados na prevenção e tratamento da malária. Inicialmente, as aminoquinolinas foram relatadas como eficazes no combate ao SARS-COV-2 devido aos efeitos anti-inflamatórios e antivirais, entretanto, vários trabalhos foram publicados na literatura, abordando a eficácia, levando a resultados contraditórios. Ademais, não há, até o presente momento, evidências concretas que apoiem o seu uso, assim como, há um escasso número de ensaios clínicos que mostrem evidências da eficácia desses medicamentos. Por isso, o presente estudo possui o objetivo de avaliar a eficácia da HCQ e CQ no tratamento de pacientes com COVID-19, por meio da realização de uma revisão sistemática dos principais artigos envolvendo pacientes com COVID-19 e o uso de HCQ e CQ. Uma revisão sistemática foi realizada tendo como base pesquisa nos bancos de dados PubMed e EMBASE para encontrar artigos que forneçam informações sobre a eficácia e segurança das formulações relacionadas às aminoquinolinas em pacientes com pneumonia por SARS-CoV-2. A pesquisa inicial identificou em total de 162 artigos, havendo 14 elegíveis, sendo que 13 destes não encontraram diferença significativa.
Healthy lifestyle by race/skin color and educational level in Brazil
Authors: Lopes Mariana Souza , Freitas Patrícia Pinheiro de , Silva Caroline Otoni da , Mendonça Raquel de Deus , Campos Suellen Fabiane , Malta Deborah Carvalho , Lopes Aline Cristine Souza
Published: October 2021

This study aimed to describe the prevalence of healthy lifestyles and examine its association to the combined effects of race and educational level in Brazil. Cross-sectional study. Data were obtained from the 2013 National Health Survey. Race was categorized as white, brown, or black, and educational level as low, medium, or high. To assess the combined effects of race and educational level, a combined variable was created. Healthy lifestyle factors were: non current smoker; non risk use of alcohol; daily consumption of fruit, and vegetables and being active. Lifestyle status was categorized as less healthy or healthier.  Of the 59,249 participants, 18.4% of the whites and 6.8% of blacks reported higher education, respectively. Healthy lifestyle status differed by race and educational level. The prevalence of 3 or more parameters were higher than 80% among individuals with high educational levels, regardless of race. The association of healthy lifestyle status with the combined effects of both race and educational levels remained significant after adjustments, except in blacks and browns with high educational levels. Education may be one of an important structural determinant of health status in Brazil, especially among blacks and browns. Investments in education can be helpfull to reduce racial inequalities.
Bibliometria sobre o Aedes spp. e etnobotânica: plantas inseticidas utilizadas no combate às arboviroses
Authors: Santos Antonio Carlos dos , Andrade Ivanilza Moreira de
Published: October 2021

O presente trabalho constitui-se de um levantamento bibliométrico sobre plantas medicinais com potencial larvicida/inseticidas e/ou utilizadas como repelentes em Aedes ssp., e verificar o quantitativo de trabalhos científicos no controle das arboviroses no intervalo de 10 anos. A pesquisa se delineou por meio de análise bibliométrica, cujos dados foram obtidos nas bases Web of Science, PubMed Central: PMC, LILACS e MEDLINE Complete. Após todos os refinamentos das palavras chaves pesquisadas nas bases científicas no período de 2011 a 2020, teve-se melhor resultado com "Aedes" and "Insecticidal" and "plants", a PubMed Central: PMC em primeiro com 1.156 artigos, em sequência a Web of Science com 119, MEDLINE Complete com 10 e LILACS 06. Não foram localizados registros de trabalhos publicados no Brasil com "Aedes" and "ethnobotanical" e na sequência “Aedes" and "Insecticidal" and "plants" ficou em primeiro e nos demais tópicos pesquisados ficou em segundo perdendo para os Estados Unidos da América. Conclui-se que o levantamento bibliométrico de trabalhos científicos com os termos "Aedes" and "Insecticidal" and "plants" destacou-se não somente pela quantidade na série de 10 anos mais por se aproximar de pesquisas congêneres, principalmente de levantamentos etnobotânicos para combate às arboviroses, com que se pretende realizar com esses descritores.
Os desafios da supervisão pedagógica no ensino no Tocantins: uma reflexão do documento curricular
Authors: Carvalho Philipe Lira de , Carvalho Edineide Paslandim Neto de , Barbosa Lêda Lira Costa
Published: October 2021

O presente estudo tem como propósito compreender a atuação do Supervisor Pedagógico no processo educativo e prática docente para o desenvolvimento do ensino e aprendizagem dos estudantes na Educação Básica, no contexto da implementação do Documento Curricular do Tocantins (DCT). A reflexão sobre suas competências poderá contribuir para o entendimento de sua identidade e relevância social, política e administrativa de seu papel na escola quanto ao apoio à prática dos professores, no tocante ao ensino e à aprendizagem. Trata-se de pesquisa bibliográfica, documental, exploratória, com uso do método dedutivo e uma abordagem qualitativa. O DCT para a Educação Infantil e o Ensino Fundamental, foi criado para aprimorar e orientar o processo de ensino e aprendizagem, nas redes de ensino do território tocantinense.  De forma colaborativa, os 139 municípios se organizaram para atender ao disposto no Art. 76 da Resolução CEE-TO/CP Nº 024/2019, e à Estratégia 3.1 da Meta 3, do Plano Estadual de Educação, Lei nº 2.977, de 8 de julho de 2015. Os resultados da investigação apontaram que a implementação do DCT veio assegurar a finalidade dos currículos escolares, considerando as histórias dos estudantes, as circunstâncias e as realidades locais, como também os aspectos, voltados ao planejamento e o monitoramento; a comunicação e o engajamento; os processos formativos; o apoio técnico e o fortalecimento da gestão pedagógica.  Isso denota uma nova visão das práticas do Supervisor Pedagógico no espaço escolar, a partir de uma intervenção conceituada na ação coletiva.
El Mole de Caderas. Platillo tradicional del Baile de Matanza de México
Authors: Hernández García Fernando , Garduño Gómez Enrique de Jesús
Published: October 2021

En México, el 20 de octubre de cada año se realiza el Baile de la Matanza, la historia de esta festividad data del siglo XVII la cual es producto del mestizaje entre lo hispánico y lo mesoamericano. Cuando se incorpora el ganado caprino a la Nueva España se presenta un proceso de sincretización dentro de la gastronomía, surgiendo platillos que aprovecharon de la manera más amplia los derivados de ese ganado. Así, durante el siglo XVIII, el mole de caderas ganó protagonismo en la gastronomía común entre Tehuacán - Estado de Puebla y Huajuapan de León - Estado de Oaxaca. En este artículo se contextualiza la tradición gastronómica de ese platillo mexicano.
DISTRIBUTION OF THE FORMS OF MERCURY OCCURENCE IN THE PROFILE OF TYPICAL SOILS OF SOUTH SIBERIA
Authors: Lyapina Elena
Published: October 2021

The article presents original data on the gross concentration of Hg in typical soils of steppe and forest-steppe landscapes, lacustrine-accumulative plains, as well as systems of intermontane depressions in Southern Siberia. Quantitative estimates of the distribution of Hg in soil profiles in the Tomsk Region, Altai Territory, and the Republic of Buryatia. The features of the distribution of Hg concentrations in soil profiles depending on the particle size distribution, hydrogen index, electrical conductivity and magnetic susceptibility were revealed. The forms of occurrence of Hg in soil profiles of different types of soils have been determined. In the studied soil types, the largest proportion of Hg falls on forms that evaporate in the temperature range 170-4000C, i.e. highly volatile low molecular weight organomercury compounds, HgCH3, Hg (CH3) 2), HgCl2, HgS alkyl radicals, aryl radicals, as well as in organo complexes. These forms are the most accessible and toxic for living organisms, the proportion of inaccessible and inert forms is minimal.
DEEP LEARNING-BASED NUMERICAL DISPERSION MITIGIATION IN SEISMIC MODELLING
Authors: Gadylshina Kseniia A. , Gadylshin Kirill G. , Lisitsa Vadim V. , Vishnevsky Dmitry M.
Published: October 2021

Seismic modelling is the most computationally intense and time consuming part of seismic processing and imaging algorithms. Indeed, generation of a typical seismic data-set requires approximately 10 core-hours of a standard CPU-based clusters. Such a high demand in the resources is due to the use of fine spatial discretizations to achieve a low level of numerical dispersion (numerical error). This paper presents an original approach to seismic modelling where the wavefields for all sources (right-hand sides) are simulated inaccurately using coarse meshes. A small number of the wavefields are generated with computationally intense fine-meshes and then used as a training dataset for the Deep Learning algorithm - Numerical Dispersion Mitigation network (NDM-net). Being trained, the NDM-net is applied to suppress the numerical dispersion of the entire seismic dataset.
NUMERICAL ALGORITHM OF SEISMIC ATTENUATION ESTIMATION IN ANISOTROPIC FRACTURED POROUS FLUID-SATURATED MEDIA
Authors: Novikov Mikhail A. , Lisitsa Vadim V.
Published: October 2021

In our work we investigate the effect of transport and elastic properties anisotropy on seismic attenuation due to fracture-to-fracture wave-induced fluid flow using numerical algorithm of estimation of seismic wave attenuation in anisotropic fractured porous fluid-saturated media. Algorithm is based on numerical solution of anisotropic Biot equations using finite-difference scheme on staggered grid. We perform a set of numerical experiments to model wave propagation in fractured media with anisotropic fractured-filling material providing wave-induced fluid flow within interconnected fractures. Recorded signals are used for numerical estimation of inverse quality factor. Results demonstrate the effect of fracture-filling material anisotropy on seismic wave attenuation.
POSSIBILITIES OF OBJECT-ORIENTED MIGRATION FOR IMAGING THE PRE-JURASSIC DEPOSITS
Authors: Protasov Maxim I. , Litvichenko Dmitry A.
Published: October 2021

The paper presents the results of testing several migration procedures with an emphasis on the possibility of object-oriented imaging of the pre-Jurassic deposits. Numerical examples are calculated for synthetic data obtained for a realistic seismic model of pre-Jurassic deposits, built from real data from Western Siberia.
METHODS FOR CALCULATION OF FREQUENCY DEPENDENT RAYS DEPENDING ON THE MODEL PARAMETRIZATION
Authors: Protasov Maxim I. , Neklyudov Dmitry A.
Published: October 2021

The paper presents algorithms for calculating frequency-dependent rays. Three variants for the parametrization of seismic models are considered: a grid model, a grid model with the boundaries of geological bodies specified on the grid, and a model specified by explicit functions. The paper presents an analysis of frequency-dependent ray tracing algorithms, determines the optimal algorithms for each model parameterization, as well as their comparison with the results of standard ray theory and finite-difference modeling.
GEOELECTRICAL STRUCTURE OF BAIKAL RIFT MUYSKAYA BASIN BASED ON ARCHIVAL GEOELECTRICAL DATA INTERPRETATION
Authors: Sanchaa Aidisa M. , Nevedrova Nina N.
Published: October 2021

The article presents the results of reinterpretation of the archive data of the vertical electric soundings on the Muyskaya depression of the Baikal Rift. Two-dimensional mathematical modeling was performed to verify the obtained data.
SEISMOGRAVITY STRUCTURE OF THE CRUST OF THE EASTERN MARGIN OF THE SIBERIAN CRATON (3-DV PROFILE)
Authors: Suvorov Vladimir D. , Pavlov Evgeny V. , Melnik Elena A.
Published: October 2021

The data are part of a complex of geophysical studies along the 3-DV profile, which is part of the system of regional profiles of the Russian Federation. Seismic and gravity observations characterizing the structure of the Earth’s crust along an about 600-km-long section of the 3-DV profile crossing the eastern margin of the Archean Siberian Craton, which borders the Mesozoic Verkhoyansk-Kolyma fold system, are considered.
CORRECT DETERMINATION OF INTEGRAL CONDUCTIVITY IN SOLVING INCORRECT INVERSE PROBLEMS OF ELECTROMAGNEIC LOGGING
Authors: Dashevskiy Yuliy A. , Velker Nikolay N. , Bondarenko Alexey V. , Bocharov Oleg B.
Published: October 2021

The paper suggests and investigates a problem statement of well-logging inverse problem that is based on the integral conductivity parameter to describe a geoelectric section. Approach was introduced for a layered cylindrical model with radially heterogeneous continuous distribution of electric properties that parametrize the problem with a function of total longitudinal conductivity. The results of hydrodynamic modeling for oil/fresh water- and brine-based drilling muds were used to study multiple propagation resistivity tool signal equivalency for two classes of models with continuous and piece-wise constant conductivity distribution. Physically based algorithm enabling one to convert one model class to the other, preserving the signal equivalency was proposed. It was demonstrated that the radial models with different radial conductivity distribution and similar integral conductivity curves are equivalent. This fact lays a rationale of using the integral conductivity parameters along with conductivity while inversion. The integral conductivity parameter can be used to build the functionals, whose minimization improves algorithm stability and enables determining functional parameters in hydrodynamic filtration models.
INDUCTIVE AND REMANENT MAGNETIZATION OF ROCKS OF ZARECHENSKAYA AND NIKOLSKAYA MAGNETIC ANOMALIES (EASTERN COAST OF OZ. BAIKAL)
Authors: Dyadkov Petr G. , Saylymby Dayana Yu. , Mikhaltsov Nikolay E. , Levicheva Alexandra V.
Published: October 2021

The remanent magnetization, magnetic susceptibility and its anisotropy, as well as the Q factor of the samples of rocks, from the Zarechenskaya and Nikolskaya magnetic anomalies have been determined. These anomalies locate near the Selenginskaya depression on the eastern coast of Lake Baikal. Knowledge of the magnetic properties of rock massifs that are the sources of these anomalies is necessary to assess the magnetoelastic coefficients, which may be different for remanent and inductive magnetization. This, in turn, will make it possible to further increase the reliability of the interpretation of the results of tectomagnetic monitoring performed here.
POSSIBILITIES OF REMOTE MONITORING OF THE NOVOSIBIRSK HPP HYDRAULIC UNITS OPERATION ACCORDING TO SEISMOLOGICAL OBSERVATIONS
Authors: Kokovkin Ivan V. , Gromyko Pavel V. , Bryksin Alexey A. , Seleznev Victor S.
Published: October 2021

Engineering buildings and structures are objects of increased responsibility. Under certain conditions, buildings and structures are subjects to negative impacts caused by various environmental factors (activation of faults, earthquakes, erosion, freezing, etc.) and technological factors. During operation, it is necessary to control the technical condition of the object and the existing dynamic effects, possibly danger, for the structure and for its parts. The basis for the development of the control method is the results of research devoted to the study of the dynamic effects arising in the dams and the structures hydroelectric power station. This paper shows the results of the analysis of the obtained seismic materials from seismic stations near the Novosibirsk hydroelectric power station and at a distance of about 16 km from it. From the recorded seismic vibrations, signals were identified, the sources of which are the technogenic effects of the operating equipment of the Novosibirsk hydroelectric power station. The possibility of tracking changes in operating modes of hydraulic units at a great distance from the object itself is shown. Shown is the transformation of the received signal by the noise subtraction method to improve the signal-to-noise ratio.
SEISMOTECTONIC DEFORMATIONS IN THE PACIFIC AND OKHOTSK LITHOSPHERIC PLATES CONTACT ZONE
Authors: Bushenkova Natalia A. , Kuchay Olga A.
Published: October 2021

The seismotectonic deformations were determined in the Pacific and Okhotsk (Eurasian) lithospheric plates subduction zone based on 2458 mechanisms of earthquake foci data for 1977-2019. The deformation features of medium in different deep layers are shown. The deformation field uniformity in the depth range of 1-70 km and the deformation field inhomogeneity for the submerged plate deep parts (105-200, 200-400 and 400-700 km) are revealed. One of the deformations field change reasons is the influence of ascending and, especially, descending currents of thermogravitational convection in the upper mantle sublithospheric part, in particular, the convection structure influence on the subducting plate geometry
MINERAL DRINKING TABLE WATER OF ALTAI: CHARACTERISTICS AND PROSPECTS OF USE
Authors: Kokhanenko Anna A. , Sidorina Natal G. , Korol Elena A.
Published: October 2021

The characteristics of fresh underground waters of the Altai Republic are given. The typification of these waters has been carried out. The features of the physical and chemical composition of natural table waters of Gorny Altai and the prospects for their use are shown.
Blood Profile of Broilers Given Feed Containing Fish Meal With Different Levels
Authors: Wardani Ismi , Saili Takdir , Pagala Muhammad Amrullah
Published: October 2021

The study aims to analyze the blood profile of broilers fed with fishmeal with different levels. The study used a complete randomized design (RAL) 4 treatments and 4 replays with 2 chickens as an experiment and broiler chickens as many as 100 heads, the treatment in the study was P0= Control (commercial feed BP11), P1 = 43 % Yellow Corn + 21% Bran + 27% CAB + 9% FishMeal, P2 = 43% Yellow Corn + 23% Bran + 22% CAB + 12% Fishmeal, P3 = 43% Yellow Corn + 25% Bran + 17% CAB + 15% Fishmeal with observed parameters is leukocyte differential. The results of the study with feeding containing fishmeal levels differed markedly (P<0.05) on the value of eosinophils, but had no real effect (P>0.05) on the value of hematocrit, lymphocytes, heterophiles, monocytes, basophils and H / L values.
Potential Forage of Animal Feed on Rice Fields Lora Village District Mata Oleo Bombana District
Authors: Mahafardi La Ode , Sandiah Natsir , Aka Rahim
Published: October 2021

Research has been conducted for 2 months, namely March to April 2020 aims to find out the type of forage animal feed on the rice fields lora village District Mata Oleo Bombana District Southeast Sulawesi Province. Determination of research locations by purposive sampling with observation variables in the form of forage type of animal feed, botanical composition, weight of fresh materials and capacity of capacity. The results showed the type of fodder forage consists of 10 types namely Cyperus esculentus, Bixa orellana, Cyperus iria L., Fimbristylis moliaceae (L.) Vahl, Digitaria sp., Echinocloa colona, Digitaria setigera, Monochoria vaginalis, Cyperus difformis L. and Desmodium triflorum. Botanical composition with an important value comparison dominated feed forage type Cyperus esculentus (18.72) and the lowest dominance Bixa orellana (1.72). Fresh weight production is 590.40 kg/ha with a capacity of 0.3 UT/ha/month.
SIMULASI SISTEM PERINGATAN DINI BANJIR BERBASIS ARDUINO UNO
Authors: Munawir Munawir
Published: October 2021

Banjir merupakan permasalahan yang terjadi akibat dari volume air yang belebihan pada sungai atau danau yang dipengaruhi oleh aktifitas manusia  yang tidak ramah terhadap lingkungan sehingga memiliki dampak negatif yang cukup banyak salah satu diantaranya,  rusaknya sarana dan prasarana masyarakat. Untuk itu diperlukan suatu simulasi sistem peringatan  dini banjir sebagai  alat dalam mendeteksi ketinggian air sebelum terjadi datangnya bahaya banjir.Penelitian ini bertujuan untuk memberikan peringatan dini bencana banjir yang mudah dioperasikan dan efektif untuk mendeteksi datangnya banjir. Sistem menggunakan bahasa pemrograman Arduino Uno yang telah terintegrasi mikrokontroler ATmega 328 dengan Sensor Ultrasonik sebagai pendeteksi  ketinggian air serta buzzer dan SMS Gateway  sebagai output dalam memberikan informasi terkini ke penerima tentang kondisi ketinggian air.Hasil pengujian sistem pendeteksi banjir menunjukkan bahwa sensor ultrasonik sebagai perangkat input berfungsi dengan baik dalam mendeteksi ketinggian air sedangkan  sms gateway bekerja secara otomatis untuk mengirimkan sms kepada penerima dengan tiga nomor operator yang berbeda beda yaitu Telkomsel ( 085341466233), XL ( 081935347898) dan Indosat (085796629330). Selain itu sistem juga dilengkapi sebuah buzzer sebagai tanda peringatan tambahan dengan tanda bunyi yang rendah dan tinggi sesuai kondisi ketinggian air yang telah ditetapkan dalam sistem yaitu siaga, waspada, dan bahaya.      Kata kunci — Arduino Uno , Ultrasonic Sensor , Buzzer , Sms Gateway
Perencanaan Penerangan Lampu Taman Kota Kendari Menggunakan Solar Cell
Authors: Setiadin Andi Fatwa
Published: October 2021

Teknologi solar cell merupakan sebuah hamparan semikonduktor yang dapat menyerap photon dari sinar matahari dan mengkonversi menjadi listrik. Solar cell banyak digunakan untuk berbagai aplikasi salah satunya pada lampu penerangan. Dan pada penelitian ini merencanakan pemasangan  Penerangan Jalan Umum Tenaga Surya ( PJU-TS TenagaSurya) diTaman Kota Kendari. Dengan Tujuan penelitian untuk mengetahui besar Energi Surya, jumlah panel modul surya, kapasitas PJS-TS yang terpasang. Berdasarkan Hasil penelitian Besar energi surya yang dihasilkan oleh Photovoltaic (PV Modul) dalam perencannan Solar Cell Buat Penerangan Lampu Taman Kota Kendari adalah sebesar 168.367 Wattpeak. Dengan Jumlah panel modul surya yang akan digunakan 1 buah pada kondisi standar adalah 220 Wp (watt-peak) dengan arus maksimum (Im) 7.1 ampere , dan besarnya kapasitas inverter yang akan  digunakan adalah harus sesuai dengan kapasitas BCR , yakni 10 A dan Batteray  yang akan digunakan adalah 100 AH dengan jumlah  baterai sebanyak 1 buah.  Kata Kunci : PJU,Taman,Tenaga surya,photovoltaic.
PERENCANAAN PLTMH DENGAN MENGGUNAKAN SALURAN IRIGASI
Authors: Poapa Indra Asta Pratama
Published: October 2021

Indonesia adalah negara berkembang yang memiliki potensi Energi Terbarukan (EBT) yang cukup besar dan saat ini mengalami pertumbuhan dalam penyediaan kebutuhan energi listrik meningkat. Sebagai hasil dari masalah ini, pemerintah memberikan solusi dengan memaksimalkan pemanfaatan energi terbarukan (EBT). Salah satu potensi pengembangan energi terbarukan adalah pembangkit listrik yang sangat superior mikro hidro (PLTMH). Timur Kabupaten Kolaka merupakan salah satu daerah yang memiliki potensi tersebut. Penelitian ini bertujuan untuk mengetahui seberapa besar potensi PLTMH untuk daya kenaikan saluran irigasi East Kolaka, Sulawesi Tenggara, yang merupakan divisi baru dari wilayah Kabupaten Kolaka. Penelitian ini merupakan penelitian dengan metode survei yang bertujuan untuk memperoleh data aktual tentang potensi laju aliran air saluran irigasi, kepala dan data pendukung lainnya. Data dikumpulkan melalui pengamatan langsung di lapangan. Berdasarkan hasil ini, kekuatan yang dapat dihasilkan untuk MHP dalam potensi irigasi di Kecamatan Desa Ladongi Ladongi Jaya Kabupaten Kolaka timur dengan debit 29880 l 3/s, dengan kepala 10 m, kekuatan yang diperoleh dari 2.342,592 kw. jadi berdasarkan data set menggunakan Impulse Jenis Turbin crossflow. Kata kunci: Irigasi, debit, head, daya terbangkit
STUDI PERENCANAAN PEMBANGKIT LISTRIK TENAGA MIKRO HIDRO DENGAN MENGGUNAKAN 2 MACAM SISTEM PENGUKURAN, DENGAN METODE PENGGUNAAN CURRENT METER DAN PELAMPUNG DESA TAMPABULU KECAMATAN POLEANG KABUPATEN BOMBANA
Authors: Ihlas Ihlas
Published: October 2021

ABSTRAK - Bahan bakar minyak sebagai sumber utama energi dunia saat ini mempunyai cadangan yang terbatas dengan tingkat konsumsi yang terus meningkat dari tahun ke tahun.Untuk mengatasi krisis energi yang terjadi di negara ini, maka tidak ada pilihan selain meningkatkan pemanfaatan energi alternatif sebagaimana yang dilakukan negara-negara lain, baik itu negara berkembang maupun negara maju, antara lain peningkatan pemanfaatan energi terbarukan.Maka perlu adanya dukungan mengenai hal tersebut dengan kegiatan penelitian dan perencanaan pembangunan Pembangkit Listrik Tenaga Mikrohidro (PLTMH) dapat dimanfaatkan sebagai salah satu kebutuhan untuk ketahanan nasional di bidang energi, dimana masih ada masyarakat Indonesia yang belum dapat menikmati listrik yaitu di daerah terpencil, tepatnya di Desa Tampabulu, Kecamatan Poleang, KabupatenBombana, Sulawesi Tenggara. Potensi debit air di Sungai Poleang yang terukur adalah1.0143 m3/s dan besar head yang terukur yaitu 15meter. Sedangkan potensi daya listrik yang dapat dibangkitkan PLTMH  adalah 91.787kW. PLTMH akan menggunakan penstock  sepanjang83meter. Pemasangan instalasi listrik diutamakan pada pusat desa dan menjangkau 150KK yang terbagi dalam instalasi listrik rumah warga, fasilitas umum, dan fasilitas sosial.Kata Kunci :Pembangkit Listrik Tenaga Mikrohidro, Kabupaten Bombana Sulawesi Tenggara.
ANALISIS KETERSEDIAN DAYA DAN KEANDALAAN SISTEM JARINGAN DISTRIBUSI DIPERKANTORAN PEMDA KONAWE KEPULAUAN
Authors: Adurahim Adurahim , Mustamin Mustamin , Hay Sahabuddin
Published: October 2021

Sistem jaringan distribusi merupakan salah satu bagian sistem dari sistem penyaluran tenaga listrik, dalam sistem penyaluran ini harus diperhatikan mengenai penggunaan jenis penghantar, sistem penyalurannya, maupun proteksi atau pengamanan dari penyaluran. Tujuan penelitian ini adalah untuk mengetahui apakah luas penampang penghantar sudah sesuai dengan kapasitas beban yang ada, kualitas penyambungan, metode yang digunakan adalah metode deskriptif.Satu transformator distribusi dengan kapasitas 100 kVA menyuplai 4 titik beban, luas penampang kawat penghantar jenis NFA2X-T 3 x 70 + 50 mm2 dan sudah sesuai dengan standart yang ditentukan PUIL 2000, untuk pengaman transformator primer digunakan arrester dan fuse cut out.tegangan rendah di perkantoran pemda Konawe Kepulauan ada beberapa penyimpangan dalam pembebanan yaitu tidak seimbangnya beban pada tiap gedung, kawat penghantar udara sudah memenuhi standar. Agar masa yang akan datang pihak pemda dapat memperhatikan karakteristik dan kapasitas transformator serta besarnya penampang penghantar yang digunakan, perlu diadakan penelitian untuk beban yang terpasang sehingga akan mudah di ketahui karakteristik dan kemampuan instalasi dalam melayani beban. Keandalan sistem jaringan distribusi dipemda konawe kepulauan terhitung sebesar 0,8669.Kata kunci: Jaringan distribusi, tegangan rendah, Konawe Kepulauan
Analisis Potensi Biogas Kotoran Ternak Sapi Sebagai Pemanfaatan Energi Listrik Alternatif
Authors: Fatwarizaldi Muh. , Tachrir Tachrir , Lolok Agustinus
Published: October 2021

Potensi volume biogas dari kotoran sapi dapat dimanfaatkan sebagai energi listrik alternatif dengan cara mendesain prototype alat digester. Tujuan penelitian ini untuk mengetahui potensi volume biogas dari kotoran sapi dengan cara merancang prototype alat digester berbahan baku kotoran sapi 20 Kg dengan perbandingan air 1:1. Berdasarkan hasil analisa penelitian, menghasilkan Biogas 0,16 m3/hari, Kandungan Metana CH4 0,08 m3/hari, Energi Listrik 0,8936 kWh, Daya Total 37,23 W. Pada implementasi prototype digester selama 28 hari volume biogas yang dihasilkan pada penyimpanan gas 0,045 m3, dan Tekanan 103.385,1 N/m2. Energi listrik 0,251325 kWh dan daya total 10,471 W.
PERANCANGAN JARINGAN DISTRIBUSI 220/380 VOLT PADA KANTOR WALIKOTA DARI FEEDER PLTSA KOTA KENDARI
Authors: Kasim Muh Hutri Lipultah
Published: October 2021

Telah dilakukan perencanaan jaringan distribusi tegangan rendah pada kantor walikota kota kendari dari Feeder PLTSA Kota Kendari. System distribusi jaringan tegangan rendah adalah bagian dari system tenaga listrik yang berada di antara sumber daya listrik dan pemakai tenaga listrik(konsumen).Dengan bertambahnya kebutuhan daya listrik memaksakan jaringan tegangan rendah yang semakin handal guna menyediakan sumber listrik yang optimal. Salah satu bagian dari proses penyediaan tenaga listrik bagi konsumen pelanggan listrik adalah operasi jaringan distribusi.Saluran Udata Tegangan Rendah adalah system penyaluran tegangan listrik 380-400 Volt melalui kawat hantar udara direntang diatas tiang kontruksi, secara ekonomis jaringan saluran udara tegangan rendah lebih murah dibanding saluran kabel tegangan rendah bawah tanah.Untuk konstruksi jaringan SUTR yang berdiri sendiri dipakai tiang beton atau tiang besi dengan panjang 9-13 meter. Tiang beton yang dipakai dari berbagai jenis yang memiliki kekuatan beban kerja (working load) 200daN, 350daN dan 500daN (dengan angka faktor keamanan tiang=2 ) Pada titik yang memerlukan pembumian dipakai tiang beton yang dilengkapi dengan terminal pembumian. Untuk langkah selanjutnya bias dilanjutkan dengan perancangan kabel bawah tanah. Kata Kunci : Jaringan Distribusi, Perancangan, SUTR.
DESAIN OSCILATING WATER COLUMN SEBAGAI PENGHASIL ENERGI LISTRIK DIWILAYAH PERAIRAN SIOMPU KABUPATEN BUTON SELATAN
Authors: Mumin Al
Published: October 2021

Indonesia merupakan negara kelautan terbesar di dunia. Luas laut indonesia mencapai 5,8 juta km2 , atau mendekati 70% dari luas keseluruhan negara indonesia. Akan tetapi, belum ada pemanfaatan potensi energi kelautan secara optimum, terutama dalam membangkitkan tenaga listrik. Potensi energi gelombang laut dan samudra untuk menghasilkan listrik merupakan salah satu potensi yang belum banyak diketahui masyarakat umum. Adapun tujuan dari penelitian ini adalah untuk merancang dan menganalisa pembangkit listrik gelombang laut sistem OWC, Teknologi OWC sangat cocok dibangun di daerah dengan topografi dasar laut yang landai dan memiliki ketinggian gelombang laut yang konstan yang biasanya dipengaruhi oleh kecepatan angin serta tidak memerlukan daerah kontruksi yang luas. berdasarkan kriteria tersebut, teknologi sistem OWC dapat digunakan diperairan pesisir Siompu Kab. Buton Selatan Provinsi Sulawesi Tenggara dikarenakan kondisi topografi dasar lautnya yang landai serta ketinggian gelombang laut yang konstan yang biasanya dipengaruhi oleh kecepatan angin. Diharapkan penelitian ini bukan hanya untuk diajukan sebagai salah satu syarat untuk menempuh gelar sarjana tetapi penelitian ini juga dapat dijadikan pertimbangan bagi pemerintahan daerah Sulawesi Tenggara khusunya Kab Buton Selatan sebagai bahan pembuatan kebijakan pembangunan PLTGL di wilayah perairan Siompu yang kenyataannya sampai saat ini belum mendapatkan energi listrik secara merata khususnya di daerah pesisisr pantai. Melihat dari topografi dasar laut yang dimilikinya, serta ketingian gelombang laut dilokasi yang direncanakan, maka desain pembangkit listrik tenaga gelombang laut yang ideal untuk digunakan dilokasi yang direncanakan adalah desain energetech. energetech adalah salah satu desain PLTGL yang dirancang dengan menggunakan sistem Oscillating Water Column (OWC). desain ini biasanya ditempatkan pada kedalaman laut mulai dari perairan dangkal hingga kedalaman 50 m (150 kaki). Desain energetech ini memiliki lebar chamber 2,5 m denggan tinggi 1.5 m yang berfungsi untuk memfokuskan pergerakan gelombang laut menuju OWC. dimana nantinya pada OWC, terjadi proses pengkonversian energi gelombang laut menjadi energi listrik. Dari hasil perhitungan dapat diketahui daya terkecil yang dapat dibangkitkan sekitar 2329,072 watt sedangkan untuk daya terbesar sekitar 6109,978 watt, kemampuan membangkitkan daya dapat digunakan untuk memberikan pasokan daya listrik baru diwilayah perairan Siompu Kabupaten Buton Selatan. Kata Kunci : OWC, Pembangkit listrik Tenaga Gelombang Laut, Desain OWC
Analisis Pengaruh Perubahan Beban Terhadap Kondisi Refraktori Boiler Pembangkit Listrik Tenaga Uap Punagaya
Authors: Karangan Rishan , Musaruddin Mustarum , Lolok Agustinus
Published: October 2021

Penelitian ini menganalisa kerusakan yang terjadi pada Refraktori Boiler Pembangkit Listrik Tenaga Uap di PLTU Punagaya. Tujuan penelitian ini adalah untuk mengetahui mengapa pola pembebanan unit yang berubah-ubah dapat menyebabkan kerusakan pada refractory boiler. Metode yang digunakan pada penelitian ini ialah Failure Mode and Effect Analysis (FMEA) dan Root Cause Failure Analysis (RCFA) serta pembuktian perhitungan Cold Crushing Strength (CCS). Hasil penelitian menunjukan bahwa data kecepatan aliran flue gas masuk cyclone yang melebihi spesifikasi (<35 m/s) dan data kekuatan CCS refractory aktual yang menunjukan nilai 43 MPa menjadi penyebab dari pembebanan yang tidak stabil yang merupakan salah satu faktor penyebab dari kerusakan refractory boiler.
Perancangan Model Knowledge Management System Pengelolaan Proyek Dengan 10-Step Roadmap Knowledge Management System pada PT. Aegis Ultima Teknologi
Authors: Tiawan Tiawan , Julpikar Soni , Permana Budi
Published: October 2021

In the current era of globalization, knowledge is a very valuable asset for companies to increase their effectiveness. Therefore, awareness is needed for companies to foster a culture of sharing knowledge because this will be a valuable asset for the company compared to other assets. To foster a knowledge-sharing culture at PT. Aegis Ultima Teknologi, a knowledge management system is needed, especially in this study using at PT. Aegis Ultima Teknologi the 10-Step Knowledge Management System methodology.
Pemanfaatan Pembangkit Listrik Tenaga Surya untuk Beban Non-Critical di Stasiun Typical Light Rail Transit Jabodebek
Authors: Nityasmi Annisa Lintang , Setiabudy Rudy
Published: October 2021

Sistem kelistrikan existing stasiun tipikal LRT Jabodebek di-supply oleh PLN dengan kapasitas daya sebesar 197 kVA. Total kapasitas beban dari stasiun ini sebesar 132.206 kW dan setara dengan 1372.2 kWh. Cadangan pasokan listrik untuk seluruh beban stasiun menggunakan genset berkapasitas 2 MVA. Luas atap dari stasiun LRT Jabodebek sebesar 2724 m2. Besar intensitas radiasi harian di Jakarta mencapai 4.187 kWh/m2. Pemanfaatan Solar Cell di atap stasiun merupakan suatu langkah untuk menerapkan rencana kemandirian sistem kelistrikan di Stasiun LRT Jabodebek. PLTS dan PLN digunakan sebagai supply pada 18.4% total beban di stasiun LRT Jabodebek atau sebesar 459.04 kWh. PLTS akan dapat membangkitkan daya sebesar 119.9844 kWp yang dihasilkan dari 256 panel yang dilengkapi dengan 1 buah inverter berkapasitas 125 kW. PLTS hanya memerlukan area seluas 574,8 m2 dan memiliki performance ratio sebesar 81,3%, sehingga perencanaan PLTS di atap stasiun tipikal LRT Jabodebek layak untuk direalisasikan.
PROTOTYPE RADAR PENDETEKSI OBJEK DI DALAM RUANGAN
Authors: Asri Yoana Nurul
Published: October 2021

Keterbatasan jarak pandang dalam mendeteksi keberadaan objek menjadi sebuah masalah dalam aplikasi kontrol dan monitoring. Sehingga salah satu teknologi saat ini ialah adalah penggunaan radar. Salah satu fungsi radar yaitu untuk mendeteksi jarak objek. Dalam penelitian ini dibuat prototype radar untuk mengetahui keberadaan objek dalam satu sisi. Prototype menggunakan tujuh buah komponen. Objek yang diukur terdiri dari tiga buah dengan perbedaan ukuran sisi yakni 5, 8, dan 10 cm. Diperoleh hasil bahwa semakin besar ukuran objek dan semakin dekat sebuah objek dengan sensor maka hasil pembacaan jarak akan semakin akurat, begitu pun sebaliknya. Perbedaan jarak dan sudut yang sebenarnya dengan pembacaan radar dalam tampilan GUI memiliki hasil yang lebih bervariasi pada objek yang memiliki luasan sisi lebih besar.  Perbedaan pembacaan jarak radar dengan yang sebenarnya maksimum hanya 1 cm dengan rata-rata kesalahan pembacaan sebesar 0,1 %.
Perencanaan Jaringan 4G LTE 1800 MHz In-building pada Fakultas Kedokteran UM-Palembang menggunakan Propagasi COST-231
Authors: Alfian Ade willy , Alfaresi Bengawan , Ardianto Feby
Published: October 2021

Perencanaan jaringan telekomunikasi merupakan hal yang sangat menentukan dalam kualitas sinyal pada jaringan yang diterima oleh pelanggam. Permasalahan yang sering terjadi adalah kualitas level sinyal coverage yang tidak merata terutama pada kondisi dalam gedung (Indoor). Sehingga kondisi dalam bangunan memerlukan perancanaan khusus untuk memastikan kondisi kualitas sinyal agar tidak terdapat blank spot. Pada penelitian ini merencanaan jaringan indoor 4G LTE frekuensi 1800 MHz dengan menggunakan model propagasi COST-231 pada gedung Laboratorium Fakultas Kedokteran Universitas Muhammadiyah Palembang. Penelitian ini menggunakan software radiowave propagation simulator. Hasil dari penelitian ini yaitu dengan perbedaan power transmit (2 antenna vertikal) menunjukkan bahwa semakin tinggi nilai power transmit, maka nilai RSRP semakin baik. Akan tetapi nilai power transmit tidak mempengaruhi baik atau buruknya kualitas sinyal SIR.Pada analisa jumlah antenna yaitu 2 antenna, 3 anntena dan 4 antenna menunjukkan bahwa semakin banyak antenna yang digunakan pada gedung, maka nilai RSRP akan semakin baik, akan tetapi nilai SIR akan semakin jelek karena efek Interferensi antar antenna.
Non-Radial Pulsations of Distorted Stellar Structures: Effect of Mass Variation
Authors: Saini Seema , Kumar Sunil , Bhatt Vineet , Bedi Pradeep
Published: October 2021

Eigen-frequencies (EF) of non–radial modes (NRM) of pulsations of differentially rotating (D R) and tidally distorted (T D) stellar models by considering the effect of mass variation (MV) on its equi-potentials surfaces inside a star. The method utilizes an averaging proposal of Kippenhahn and Thomas (K and T) with conjunction of the concept of Roche-equipotential. The study accolades and corrects earlier studies of non-radial (NR) pulsations of DR and TD stellar structures of different natures such as radial and non-radial oscillations, X-ray, gamma ray and other electromagnetic disturbances. The reflection of the work comes from the requirements of the inclusion of non-uniform densities that yield Lane-Emden equation to have reliable results up to second order disturbances.
Bone Morphogenetic Protein 4 Alleviates DSS-Induced Ulcerative Colitis Through Activating Intestinal Stem Cell by Target ID3
Authors: Hu Lei , Xu Junji , Wang Xue , Feng Liang , Zhang Chunmei , Wang Jinsong , Wang Songlin
Published: October 2021

Damage to intestinal epithelial cell proliferation or intestinal stem cell (ISC) maintenance may trigger inflammatory bowel disease (IBD), and protecting the ISCs is critical for IBD treatment. Here, we found that in the dextran sulfate sodium (DSS)-induced ulcerative colitis mice model, colon epithelium and Lgr5+ intestinal stem cells (ISCs) renew quickly during the first 3 days. We also found that during this renewing period, SMAD4 and bone morphogenetic protein 4 (BMP4) expression were significantly upregulated. An extra BMP4 treatment could preserve the Lgr5+ ISCs and the colon epithelium turnover, and could significantly decrease colon mucosal damage. Moreover, we found that BMP4 regulated ID3 expression in the colon epithelium. Depletion of ID3 could significantly reduce the epithelium renewal and ratio of Lgr5+ ISCs at the base of crypts. In conclusion, the present study showed that BMP4 could maintain epithelium cellular proliferation and the ISCs function through ID3 in mice with DSS-induced colitis. The administration of exogenous BMP4 supplement could alleviate DSS-induced colitis by restoring epithelium cellular proliferation and ISC function, suggesting the possible therapeutic function of BMP4 for ulcerative colitis.
Solid-State and Theoretical Investigations of Some Banister-Type Macrocycles with 2,2’-Aldoxime-1,1’-Biphenyl Units
Authors: Stroia Ioan , Moraru Ionuţ -Tudor , Miclăuş Maria , Grosu Ion , Lar Claudia , Grosu Ioana Georgeta , Terec Anamaria
Published: October 2021

In the context of helical chirality, bridging of biphenyl units leads to banister-type compounds and the stability of the resulted atropisomers may increase dramatically if suitable changes are performed in the linker unit that coils around the biphenyl moiety. A rigorous density functional theory (DFT) study was conducted for macrocycles containing rigid oxime ether segments connected to the biphenyl backbone in order to determine how the rotation barriers are influenced by the presence of either a flexible oligoethyleneoxide or a more rigid m–xylylene component in the macrocycle. The calculated values for the racemization barrier were in good agreement with those obtained experimentally and confirm the benefit of introducing a more rigid unit in the macrocycle on the stability of atropisomers. Solid-state data were obtained and computed data were used to assess the contribution brought by supramolecular associations observed in the lattice to the stabilization of the crystal structure. Beside introducing rigidity in the linker, complexation of flexible macrocycles with alkali metal ions is also contributing to the stability of atropisomers, leading to values for the racemization barrier matching that of the rigid macrocycle. Using diethylammonium cation as guest for the macrocycle, a spectacular increase in the barrier to rotation was observed for the resulted pseudo[2]rotaxane.