bluuebunny/crossref_metadata_2025 huggingface dataset:
GAMBARAN LINGKUNGAN DAN VEKTOR DEMAM BERDARAH DENGUE DI WILAYAH KERJA PUSKESMAS TEMANGGUNG TAHUN 2017
Authors: Cahyati Widya Hary , Sanjani Jauharotusf Syifa Kusrah
Published: March 2020

Cases of DHF in Temanggung District had increased from 2014 - 2016 and the DHF insidence rate was in the top three of the highest level in Central Java. The aim of this research is to describe the environmental and vector of Dengue Hemorrhagic Fever in DHF Case in Temanggung Primary Health Center Working Area.This is a descriptive research with an observational analytic approach. Samples of this research are 48 DHF cases with simple random sampling, while the mosquito samples were taken by spot surveytechniques. The instruments which used in this research are measurement and observation sheets, and questionnaire sheets. The data analysis is shown in the form of frequency table.The result showed that the average of physical environment consist of temperatures around 24.3-27.2oC, 73-94% of humidity, and 0-67mm of rainfall. The most type of water reservoirs was bathtubs, and it is located mostly in the house. The biological environment showed that there are 38 houses with the match criteria of trees (shady trees with at least 5 meters of height and full of leaves yet ≤ 100 meters away from sample’s house), additionally there is no bush with the match criteria (a clump of trees with the maximum height of 2 meters, ≥ 2 meters wide, yet ≤ 100 meters away from sample’s house). The social environment showed that the category of DHF knowledge was mostly in the moderate category, the category of action respondents also showed that they mostly not supporting the prevention of DHF, and the density of occupancy was not dense. The most dominantis of mosquito was Aedes aegypti. This research’s recommendation is to conduct the integrated vector control which involve all components in Temanggung Primary Health Center Working Area.
METODE PEMBELAJARAN KOMBINASI (SELF DAN PEER ASSESSMENT) EFEKTIF MENINGKATKAN KETERAMPILAN MAHASISWA DI LABORATORIUM KLINIK
Authors: Lestari Dilistia , Susiarno Hadi , Sukandar Hadyana
Published: March 2020

Midwife profession must have good competence because it has an impact in improving the quality of health service. Survey of Midwifery Diploma III Institutions. Midwife competencies that match work requirements are only 15%. To improve the competence of midwives, the laboratory learning process must be carried out properly according to standards. The combination of self and peer assessment methods is learning to get feedback, encourage students to be more active, independent, responsible, practice evaluation skills and encourage deep learning to maximize the achievement of competencies. The purpose of this study is to analyze the effect of a combination of self and peer assessmentlearning methods on D III Midwifery student competencies. This research is a quantitative study with a quasi-experimental pre-post test design. The study population was all students of D III Midwifery Semester III with a total of 75 people. Sampling uses simple random sampling technique which is divided into three groups for self assessment, peer assessment and a combination of self and peer assessmentmethods, each group totaling 25 people. The research instrument uses a checklist. The statistical test used is Kruskal_Wallis. the results showed that the combination of self and peer assessmentmethods showed more increases by 13.2% (p
EFFORTS TO IMPROVE STUDENT CRITICAL THINKING SKILLS IN IPS LEARNING THROUGH THINK PAIR SHARE TYPE DISCUSSION METHOD
Authors: Carinih Carinih
Published: March 2020

This research is motivated by learning methods that still apply conventional methods so as to limit the development of students' abilities and skills. This study seeks to improve students' critical thinking skills through the learning method of think pair share. The research was carried out at SMPN 5 Singingi with class VII.2 subjects as many as 24 students. The study design uses classroom action research. The instrument used was a teacher and student action observation sheet and a test of critical thinking skills. The results showed an increase in teacher actions in the first cycle with a percentage of 72% with the category quite increased in the second cycle to 83% with a good category, increased student activity from cycle I by 75% with enough categories in the second cycle to 88% which is a good category, and the results of critical thinking skills test students in the first cycle 65% with a good category increased in the second cycle to 77% which is included in the good category. The conclusion of this research is the think pair share method can improve the critical thinking skills of students in class VII.2 of SMPN 5 Singingi.
IMPLEMENTASI METODE OCF DALAM MENINGKATKAN KEMAMPUAN GURU MENYUSUN KISI-KISI SOAL
Authors: Risman Oyong
Published: March 2020

This research is motivated by the obstacles faced by the teacher in compiling the problem lattices and the low quality of the questions arranged by the teacher. Through the OCF method it is hoped that the teacher's ability will increase in compiling the question grid. This study is a study of school action conducted in SDN 014 Sidodadi Logas Tanah Darat District for 7 teachers. Data was collected through observation sheets and analyzed to see the improvement of the ability of teachers after mentoring with the OCF method. The results of the study in the first cycle obtained an average percentage of teacher abilities of 67.1% with enough categories to be 85.4% included in good category. Based on the results of the study it can be concluded that the ability of SDN 014 Sidodadi District Logas Tanah Darat teachers in compiling the questions grid has increased through the methods of observe, criticize, and fix it (OCF).
UPAYA MENINGKATKAN AKTIVITAS DAN HASIL BELAJAR SISWA KELAS III SDN 021 LADA USANG MELALUI PENDEKATAN SAINTIFIK BERBANTUAN VIDEO PEMBELAJARAN
Authors: Delita Arni
Published: March 2020

Penelitian ini dilatarbelakangi oleh aktivitas pembelajaran yang berpusat pada guru serta rendahnya hasil belajar siswa. Melalui pendekatan saintifik dengan bantuan media video pembelajaran diharapkan dapat meningkatkan aktivitas dan hasil belajar siswa. Penelitian ini merupakan penelitian tindakan kelas pada siswa kelas III SDN 021 Lada Usang yang berjumlah 13 siswa. Penelitian ini dilaksanakan mulai bulan September sampai Oktober 2019. Instrumen yang digunakan dalam penelitian ini adalah lembar observasi aktivitas siswa dan tes hasil belajar siswa. Hasil penelitian ini mengemukakan bahwa aktivitas siswa pada siklus I sebesar 61% dengan kategori aktif meningkat pada siklus II menjadi 83% yang termasuk kategori sangat aktif. Rata-rata hasil belajar siswa siklus I adalah sebesar 74,34 dengan persentase ketuntasan klasikal sebesar 69%, pada siklus II mengalami peningkatan dengan rata-rata 80,38 dengan ketuntasan klasikal sebesar 84% yang termasuk dalam kategori sangat baik. Berdasarkan hasil penelitian ini dapat disimpulkan bahwa pendekatan saintifik dengan bantuan media video pembelajaran dapat meningkatkan aktivitas dan hasil belajar siswa
Pd/C-CATALISED HYDROGENIZATION OF METHYL PYRROLE-3-CARBOXYLATES IN THE DIASTEREOSELECTIVE SYNTHESIS OF α-SUBSTITUTED β-PROLINES
Authors: Kemskiy Sergiy , Grozav Alina , Sujkov Sergiy , Yurchenko Oleksandr , Vovk Mykhailo
Published: March 2020

The analysis of synthetic and biological importance of α-substituted β-prolines was conducted. Methods of synthesis of β-prolines and their esters, based on both intra- and intermolecular reactions of formation of functionalized pyrrolidinic cycle, as well as catalytic reduction of corresponding 2,3-substituted pyrroles and their dihydro derivatives, were systematized. The necessity of the hydrogenation process improvement of 2,3-di-substituted pyrroles using cheap catalysts was justified. The approach to α-substituted β-prolines (2-substituted pyrrolidine-3-carboxylic acids) was pro-posed, the first stage of which is N-Boc-protection of 2-substituted pyrrolidine-3-carboxylates with di-tert-butyl dicarbonate (Boc-anhydride) in the dichloromethane solution at the room temperature in presence of catalytic amounts of N,N-dime-thylaminopyridine. Obtained derivatives were subjected to hydrogenation in the autoclave at 45 atm. at 40 oC for 20 hours in presence of 10 % Pd/C catalyst. It was found, that reaction at such conditions proceeds with the full conversion of starting compounds and demonstrates high stereoselec-tivity and leads to the mixture of diastereomeric N-Boc-protected pyrrolidine-3-carboxylates of cis- and trans-configurations with corresponding contents of 84–87 % and 13–16 % according to NMR 1Н and chromato-mass spectra. The mild hydrolysis of isolated reaction mixtures in the water solution of lithium hydroxide followed by neutrali-zation and N-Boc-deprotection with 15 % hydrochloric acid allows isolating pure major diaste-reomers of α-substituted β-prolines with 69–74 % yields. Their trans-configuration was reliably confirmed by NMR 1Н spectroscopy using the NOESY experiment.
REARRANGEMENT OF SUBSTITUTED 1,3-BENZOXAZINES INTO XANTHENE-TYPE COMPOUNDS
Authors: Farat Oleg , Varenichenko Svetlana , Zaliznaya Ekaterina , Markov Victor
Published: March 2020

The rearrangement patterns of new 1,3-benzoxazines derivatives obtained by condensation of substituted salicylamides with cyclic ketones under the influence of Vilsmeier-Haack reagent has been studied. The influence of angel strain in a 4-membered spirocycle prevents the rearrangement of spiro [1,3-benzoxazine-2,1'-cyclobutan]-4(3H)-one under the action of a formylating agent. 1,3-Benzoxazines derivatives with ring sizes from 5- to 8-membered under the action of a formylating agent have formed formylxanthene derivative. Their formation reaction rate depends on the presence of electronegativity substituents at positions C-6 and C-8 of the aromatic cycle, as well as in the spiroring. In this work, we presented an effective method for the synthesis of formyl derivatives of xanthenes based on readily available salicylamide. It was found that (spiro[1,3-benzoxazine-2,1'-cyclobutan]-4(3H)-one) does not rearrange even under prolonged heating due to the spirocycle strain. The presence of bromine or iodine atoms at positions C-6 and C-8 of the aromatic cycle of 1,3-benzoxazines makes the reaction more difficult, which requires more harsh synthesis conditions.
ELECTROCHEMICAL SENSOR FOR DETERMINATION OF THE OXYGEN CONCENTRATIONS IN BIOLOGICAL LIQUIDS
Authors: Kolbasov Gennadii
Published: March 2020

The sensor is designed to measure the concentration of the dissolved oxygen in biological liquids, particularly in the blood stream or blood drop, and can be used in medical practice. Thus, in the treatment of hypoxia, which develops in the tissues due to the violation of the cell’s ability to absorb oxygen, it is necessary to control the part of the oxygen in the blood plasma that is not bound by hemoglobin. The same analysis is necessary for hyperbaric oxygenation of the blood in diseases of the lungs caused, particularly, in case of the coronavirus.......
ANALISIS PENILAIAN PRESTASI KERJA PEGAWAI NEGERI SIPIL DI BADAN KEPEGAWAIAN DAN PENGEMBANGAN SUMBER DAYA MANUSIA KABUPATEN BULUNGAN PROVINSI KALIMANTAN UTARA
Authors: Juari Patri , Johannes Ayu Widowati
Published: March 2020

This study discusses "analysis of Civil Servant Performance Appraisal in Human Resources Agency and Human Resource Development of Bulungan District of North Kalimantan Province". The purpose of this research is to know and analyze the implementation of Performance Appraisal of Civil Servants, to know and analyze the factors inhibiting the implementation of Performance Appraisal of Civil Servants Employment Agency and Human Resource Development District Bulungan Province of North Kalimantan. This research uses qualitative method by exposing explorative with inductive approach. With data collection techniques are interviews, observation and documentation.Based on the results of observations the author after applying the apprentices concluded that, the implementation of Performance Appraisals of Civil Servants in Human Resources Agency and Human Resource Development District Bulungan Province of North Kalimantan has been done. But there are obstacles, namely where the lack of understanding of a small part of civil servants about the procedure peyusunan Work Objectives Employees and Work Behavior. Recommended recommendations are to provide socialization and consultation with the right target, regarding the preparation of Employee Work Goals and Work Behavior to civil servants who do not understand about the regulation Keyword: Civil Servant, Performance Appraisal, Human Resources
PEMBANGUNAN PARIWISATA BUDAYA (Studi Kasus di Tana Toraja)
Authors: Rinda Ruth , Hasbi Andi
Published: March 2020

Cultural tourism as tourism brand in Tana Toraja on its development is not running well.  The government as is considered as the umbrella of the culture in one side, is also considered had marginalized the community. The efforts to foster and develop tourism nationally are also aimed at improving the quality of the country's culture, introducing the heritage of the nation as well as natural scenery, including maritime nature in various parts of the country in Indonesia. based on this, tourism management and development needs to be improved for the community. Kata Kunci :Tourism, Culture brand, Community role
GAYA KEPEMIMPINAN CAMAT DALAM PENYELENGGARAN PEMERINTAHAN DI KECAMATAN SUNGAI AMBAWANG KABUPATEN KUBURAYA
Authors: Johannes Ayu Widowati
Published: March 2020

The performance of the apparatus in carrying out government duties is expected to be carried out seriously by having a willingness to compete giving the best in order to achieve the stated goals. The function of guidance and direction of a sub-district head is reflected in the leadership style that is applied to the administration of government, development and community empowerment. The results of the study show that the Cooperation dimension, the dimension of listening and receiving suggestions / inputs and the dimensions of encouraging decision-making, are more dominantly applied by the sub-district head, which is the dimension of the participatif leadership style. Keyword: Style of leadership, governance, sub-district head, decision making
IMPLEMENTASI KEBIJAKAN ALOKASI DANA DESA DAN DANA DESA TERHADAP PEMBANGUNAN DI DESA TATELU RONDOR KECAMATAN DIMEMBE KABUPATEN MINAHASA UTARA
Authors: Pangerapan Stenly
Published: March 2020

Allocation of Village Funds including Village Funds in its implementation is carried out by several regional government institutions, namely the first local government itself as the regulator or policy maker of use and utilization, secondly the sub-district government and related technical agencies that play a supervisory, mentoring and facilitator role and the third and final is the village government itself as the recipient, user and user of the fund. the implementation of village fund allocation policies in development in the village of Tatelu Rondor, Dimembe Subdistrict, North Minahasa Regency through physical development in the village did not work well, this condition was based on facts namely lack of proper and correct understanding of village government, unavailability of resources adequate in supporting the smooth implementation of village fund allocation policies, lack of communication in supporting implementation activities, lack of support from some village officials and the community, and bureaucratic structures often hampered
Rekonstruksi Kebijakan Penganggaran Sisa Lebih Perhitungan Anggaran (SiLPA) Dana Otonomi Khusus di Kabupaten Yalimo Provinsi Papua
Authors: Liauw Gasper
Published: March 2020

The implementation of the budgeting policy, the rest of previous year’s budget calculation from the special autonomy fund in Yalimo district has not been supported by special regulations. The delay in the submission of technical instructions resulted in the swelling of this budget in the regional treasury. The result obtained are first, the implementation of the spcial autonomy budget budgeting policy is not in accordance with the principles and policies of asymetric decentralization budegeting;secondly, the Minister of Home Affairs number 13 of 2006; thirdly, the reconstruction of special autonomy budgeting policy refers to government policies conducted for special allocation funds for teacher professional allowances
Pengaruh Kinerja dan Pengawasan Aparatur Pemerintah Desa Terhadap Transparansi Keuangan Desa Montong Betok Kabupaten Lombok Timur
Authors: Amin Muhammad
Published: March 2020

Penelitian ini bertujuan untuk menganalisis secara empiris pengaruh  kinerja aparatur pemerintah desa  dan pengawasan BPD terhadap transparansi keuangan desa. Penelitian ini menggunakan data primer dengan menyebarkan kuesioner pada  Desa Montong Betok Kecamatan Montong Gading Kabupaten Lombok Timur. Alat uji digunakan dalam penelitian terdiri dari uji normalitas, uji multikoliniearitas, uji heteroskidastitas, uji hipotesis thitung dan ftabel. Hasil penelitian ini menunjukkan bahwa  variabel kinerja aparatur pemerintah desa berpengaruh positif dan signifikan terhadap transparansi keuangan desa. Hipotesis kedua variabel pengawasan BPD berpengaruh positif dan signifikan terhadap transparansi keuangan desa.
PENANGANAN MASALAH-MASALAH SOSIAL DI KECAMATAN KAWASAN PERBATASAN KABUPATEN SANGGAU
Authors: JOHANNES AYU WIDOWATI
Published: March 2020

Penelitian ini bertujuan untuk menganalisis penanganan masalah sosial yang terjadi di kawasan Kecamatan perbatasan Entikong. Penelitian ini menggunakan desain penelitian deskriptif, dimana penulis dapat menggambarkan dan menguraikan keadaan atau kenyataan yang sebenarnya tentang analisa masalah-masalah sosial di Kecamatan Kawasan Perbatasan Entikong secara sistematis, faktual dan akurat mengenai fakta-fakta dan hubungan antara fenomena yang diteliti. Hasil Penelitian menunjukkan bahwa Penanganan masalah- masalah sosial di kawasan kecamatan perbatasan di Kabupaten Sanggau dilakukan melalui pembangunan infrastruktur seperti pembangunan PLBN beserta fasilitas pendukungnya, pembangunan akses jalan menuju ibukota provinsi, kabupaten dan antar desa; pembangunan supprastruktur yang meliputi pembuatan kebijakan pengembangan kawasan perbatasan, kelembagaan dan pembangunan lingkungan; dan pembangunan masyarakat melalui pembangunan sumber daya manusia, pembangunan desa, dan pembangunan budaya masyarakat.
Editorial-Expediente-Sumário
Authors: Resende Marco Flavio C. , Cavalcante Anderson
Published: March 2020

Editorial
Increasing returns to scale and regions: a multilevel model for Brazil
Authors: Britto Gustavo , McCombie John S.L.
Published: March 2020

The paper proposes and tests an alternative way to incorporate a spatial dimension to the Verdoorn Law using multilevel models, tailored to deal with nested data. This methodology allows extending the Verdoorn equation, incorporating elements from Urban Economics to Post-Keynesian growth analysis. The estimations used firm-level data from the Brazilian manufacturing industry from 1996 to 2002. The results showed that, after controlling for firms’ characteristics, the spatial dimension is crucial to explain rates of labour productivity and output growth. Moreover, the estimations showed that substantial knowledge spillovers and urbanisation externalities are beneficial to firms’ growth, whereas localisation externalities tend to be harmful.
Estrutura e evolução do IPCA no período 2000-2014: uma análise da inflação brasileira sob uma perspectiva heterodoxa
Authors: Vilaça Ademir Pedro
Published: March 2020

O Regime de Metas de Inflação (RMI), em vigor no Brasil desde 1999, usa a taxa de juros como instrumento fundamental de controle inflacionário. Essa política representa a operacionalização do arcabouço ortodoxo da teoria econômica, que considera as pressões de demandas como principal causa da inflação. O artigo tem o intuito de apresentar as teorias estruturalista e pós-keynesiana da inflação e avaliar sua relevância para o caso brasileiro. Depois da apresentação teórica, é feita uma análise sobre a evolução do IPCA nos anos 2000, procurando identificar quais segmentos foram mais significativos para a rigidez inflacionária do país. A principal conclusão é que a inflação brasileira se caracteriza como uma inflação de oferta, de modo que a taxa de juros ataca os sintomas da inflação sem resolver suas causas, inibindo o crescimento sem superar a rigidez inflacionária.
Desigualdade e conjuntura: quatro anos de dados trimestrais da PNAD Contínua (2012-2015)
Authors: Leite Fabrício Pitombo
Published: March 2020

Este pequeno artigo trata da evolução da desigualdade de renda no Brasil entre 2012 e 2015, calculada a partir dos microdados trimestrais da PNAD Contínua e utilizando o índice de Gini. Tal análise possibilita identificar um padrão conjuntural para a trajetória da desigualdade, com aderência ao comportamento do mercado de trabalho na maior parte do período, apontando ainda para um aumento da desigualdade no último trimestre de 2015 após um descolamento com relação ao mercado de trabalho para os três primeiros trimestres do mesmo ano.
An Appraisal of Floating Exchange Rate Regimes in Latin America
Authors: Frenkel Roberto
Published: March 2020

The exchange rate regime is a crucial variable in international economic relations. This presentation attempts to evaluate the performance of floating exchange rate regimes in the major Latin American countries.
Pattern of Electroencephalography in Recurrent Febrile Seizure Patient
Authors: Chairunnisa Adinda , Gunawan Prastiya Indra , Suharjanti Isti
Published: March 2020

Background: Febrile seizures are seizures that often occur in children, usually of a non-hazardous nature and do not have a prolonged effect. Febrile seizures most often occur in children under five years of age and are reported to occur in 2-5% of the pediatric population. Febrile seizures are categorized as simple, complex and plus febrile seizures. In some patients, EEG is needed to ascertain whether a true febrile seizure occurs. Objective: This study aims to determine the EEG pattern in recurrent febrile seizure patients at the Child Inpatient Installation of Dr. Soetomo Surabaya. Method: This study used a retrospective descriptive method with medical record instruments. Results: This study showed that of 46 recurrent febrile seizures, only 21 patients could see the EEG results. Of the 18 patients with complicated febrile seizures there were 27.78% abnormal and 72.22% normal. One simple febrile seizure patient obtained a normal EEG result. Of the two patients with febrile seizures plus 50% abnormal results and 50% normal results. Conclusions: The EEG pattern in patients with recurring complex febrile seizure obtains the most abnormal result.

Keywords: recurrent febrile seizure; electroencephalography; prevalence
Correlation Between Protein, Calcium and Zinc Intake with Stunting in Children Age 3-5 Years Old in Gubeng, Mojo, Surabaya
Authors: Ramadhani Ayuning Tetirah , Fatmaningrum Widati , Irawan Roedi
Published: March 2020

Stunting is a condition that occurs as the result of the disruption in the growth of height due to poor nutrition intake and nutrition status, repeated incidence of infection and inadequate psychosocial stimulation. In year 2017, the prevalence status for stunting incindence in Indonesia is categorized as high, reaching at 29,6%. This study was conducted to determine the correlation between nutritional intake of protein, calcium and zinc with the incidence of stunting. This study was an observational analytic research with a case control method, conducted to determine the correlation between exposure of risk factors and disease by comparing stunting groups with non-stunting groups. This study obtained a relation between depleted calcium intake and stunting incidence using the Fisher’s Exact test with a p value of 0.001 and odd ratio 0.056. A significant correlation of insufficient calcium intake with the incidence of stunting was found, yet there were no correlation between insufficient protein and zinc intake with the incidence of stunting.

Keywords: stunting; protein; calcium; zinc
Moderate Intensity Exercise is Most Influential in The Expression of UCP-1 in Mice Male
Authors: Albab Chabib Fachry , Rejeki Purwo Sri , Miftahussurur Muhammad , Soelistijo Soebagijo Adi
Published: March 2020

Sufficient exercise was considered enough to reduce the number of obesities through the process of fat browning. This research was conducted to prove the effect of exercise intensity on fat browning process through increased UCP-1 expression in male mice. Laboratory experimental research with a post test only control group design approach using 24 mice was divided into 4 groups. Determination of the group was based on the negative control group, mild intensity swimming treatment group, moderate intensity swimming treatment group, and heavy intensity swimming treatment group. The treatment was carried out for four weeks with a frequency of three times a week. The control group had UCP-1 expression of 5.47 ± 0.83 IRS / LP, the mild intensity swimming group had UCP-1 expression of 7.23 ± 1.57 IRS / LP, the moderate intensity swimming group had UCP-1 expression of 9.17 ± 1.65 IRS / LP, and the heavy intensity swimming group had an expression of 6.93 ± 1.42 IRS / LP. The giving of exercise intensity variation affects the expression of UCP-1 in male mice. Moderate intensity exercise has the highest UCP-1 expression.

Keywords: exercise intensity; UCP-1; male mice
Linear-Quadratic Regulator for Control of Multi-Wall Carbon Nanotube/Polydimethylsiloxane Based Conical Dielectric Elastomer Actuators
Authors: Mulembo Titus , Njeri Waweru , Nagai Gakuji , Tamagawa Hirohisa , Naito Keishi , Nitta Takahiro , Sasaki Minoru
Published: March 2020

Conventional rigid actuators, such as DC servo motors, face challenges in utilizing them in artificial muscles and soft robotics. Dielectric elastomer actuators (DEAs) overcome all these limitations, as they exhibit complex and fast motions, quietness, lightness, and softness. Recently, there has been much focus on studies of the DEAs material’s non-linearity, the non-linear electromechanical coupling, and viscoelastic behavior of VHB and silicone-based conical DEAs having compliant electrodes that are based on graphite powder and carbon grease. However, the mitigation of overshoot that arises from fast response conical DEAs made with solid electrodes has not received much research focus. In this paper, we fabricated a conical configuration of multi-walled carbon nanotube/polydimethylsiloxane (MWCNT/PDMS) based DEAs with a rise time of 10 ms, and 50% peak overshoot. We developed a full feedback state-based linear-quadratic regulator (LQR) having Luenberger observer to mitigate the DEAs overshoot in both the voltage ON and OFF instances. The cone DEA’s model was identified and a stable and well-fitting transfer function with a fit of 94% was obtained. Optimal parameters Q = 70,000, R = 0.1, and Q = 7000, R = 0.01 resulted in the DEA response having a rise time value of 20 ms with zero overshoot, in both simulations and experiments. The LQR approach can be useful for the control of fast response DEAs and this would expand the potential use of the DEAs as artificial muscles in soft robotics.
Design and Experimental Validation of a 3-DOF Force Feedback System Featuring Spherical Manipulator and Magnetorheological Actuators
Authors: Diep Bao Tri , Nguyen Ngoc Diep , Tran Thanh T. , Nguyen Quoc Hung
Published: March 2020

This research focuses on the development of a new 3-DOF (Degree of Freedom) force feedback system featuring a spherical arm mechanism and three magnetorheological (MR) brakes, namely two rotary MR brakes and one linear MR brake. The first rotary MR brake is integrated in the waist joint to reflect the horizontal tangent force, the other rotary MR brake is integrated in the shoulder joint to reflect the elevation tangent force, while the linear MR brake is integrated in the sliding joint of the arm to reflect the radial force (approach force). The proposed configuration can reflect a desired force to the operator at the end-effectors of the arm independently in 3 DOFs by controlling the current applied to the coils of the MR brakes. After the introduction, the configuration of the proposed force feedback system is presented. Afterward, the design and conducted simulation of the MR brakes for the systems are provided. The prototype of the force feedback system, which was manufactured for the experiment, is then presented as well as some of the obtained experimental results. Finally, the proposed control system is presented and its implementation to provide a desired feedback force to the operator is provided.
The Effect of Diet Supplementation with Pomegranate and Bitter Melon on Lipidomic Profile of Serum and Cancerous Tissues of Rats with Mammary Tumours
Authors: Białek Agnieszka , Jelińska Małgorzata , Białek Małgorzata , Lepionka Tomasz , Czerwonka Małgorzata , Czauderna Marian
Published: March 2020

The aim of this study was to present overall lipid profile of organisms with ongoing neoplastic process and applied diet supplementation with pomegranate seed oil (PSO) and bitter melon extract (BME). The following were quantified in serum and cancerous tissues of rats suffering from mammary tumours: fatty acids, conjugated fatty acids and sterols, their oxidised metabolites (malondialdehyde and oxysterols) and lipoxygenase (LOX) metabolites of polyunsaturated fatty acids. The obtained results indicate that abnormalities in lipid metabolism accompany neoplastic process. These differences concern all classes of lipids and most pathways of their transformation, with the special emphasis on lipid peroxidation and LOX-mediated metabolism. Cancer process appears to be so detrimental that it may conceal positive influence of dietary modifications. The lack of anticarcinogenic properties of PSO and BME in this model may be due to their antioxidant properties or elevated levels of conjugated linoleic acids (CLA), which change CLA isomer activity from anti- to pro-tumorigenic. As CLA are the product of conjugated linolenic acids (CLnA) endogenous metabolism, high CLA levels may be explained by applied diet enrichment.
Adsorption Cold Storage for Mobile Applications
Authors: Vasta Salvatore , Palomba Valeria , La Rosa Davide , Bonanno Antonino
Published: March 2020

In recent years, hot and cold storage systems demonstrated themselves to be key components, especially in systems for waste heat exploitation. Moreover, mobile A/C and refrigeration set new efficiency challenges in the field of goods and passengers transport. In such a context, adsorption cold storage devices enable new possibilities and show promising features: high energy density and the possibility of being operated both for heat and cold release to the user. However, only a few studies on small and compact systems for mobile applications have been carried out so far, especially for cold storage exploiting low-temperature sources (<100 °C). The present paper describes the realization and testing of two different types of cold storage based on two innovative adsorbent reactors: a pelletized adsorber filled with commercial FAM Z02 zeolite, and a composite adsorber based on an aluminum porous structure and a SAPO-34 coating. An already developed testing procedure was employed to characterize the prototypes under cold storage mode for mobile refrigeration purposes. The test clearly showed that prototypes can store up to 580 Wh, with an average power during the discharging phase that ranges from 200 W to 820 W and an energy efficiency of 0.3 Whdischarged/Whcharged for the operations in the selected conditions, thus revealing promising opportunities for future further developments.
White Wine Protein Instability: Mechanism, Quality Control and Technological Alternatives for Wine Stabilisation—An Overview
Authors: Cosme Fernanda , Fernandes Conceição , Ribeiro Tânia , Filipe-Ribeiro Luís , Nunes Fernando M.
Published: March 2020

Wine protein instability depends on several factors, but wine grape proteins are the main haze factors, being mainly caused by pathogenesis-related proteins (thaumatin-like proteins and chitinases) with a molecular weight between 10~40 kDa and an isoelectric point below six. Wine protein stability tests are needed for the routine control of this wine instability, and to select the best technological approach to remove the unstable proteins. The heat test is the most used, with good correlation with the natural proteins’ precipitations and because high temperatures are the main protein instability factor after wine bottling. Many products and technological solutions have been studied in recent years; however, sodium bentonite is still the most efficient and used treatment to remove unstable proteins from white wines. This overview resumes and discusses the different aspects involved in wine protein instability, from the wine protein instability mechanisms, the protein stability tests used, and technological alternatives available to stabilise wines with protein instability problems.
Effects of Lanthanide Doping on the Catalytic Activity and Hydrothermal Stability of Cu-SAPO-18 for the Catalytic Removal of NOx (NH3-SCR) from Diesel Engines
Authors: Gao Qi , Han Shuai , Ye Qing , Cheng Shuiyuan , Kang Tianfang , Dai Hongxing
Published: March 2020

Lanthanide (La, Ce, Nd, Gd, Tb, Ho or Lu)-doped Cu-SAPO-18 samples were prepared using the ion-exchange method. Physicochemical properties of the samples were systematically characterized by a number of analytical techniques, and the effects of lanthanide doping on catalytic activity and hydrothermal stability of the Cu-SAPO-18 catalysts for the NH3-SCR reaction were examined. It is shown that the doping of lanthanide elements could affect the interaction between the active components (copper ions) and the AEI-structured SAPO-18 support. The inclusion of some lanthanides significantly slowed down hydrolysis of the catalyst during hydrothermal aging treatment process, leading to an enhanced catalytic activity at both low and high temperatures and hydrothermal stability. In particular, Ce doping promoted the Cu2+ ions to migrate to the energetically favorable sites for enhancement in catalytic activity, whereas the other lanthanide ions exerted little or an opposite effect on the migration of Cu2+ ions. Additionally, Ce doping could improve hydrothermal stability of the Cu-SAPO-18 catalyst by weakening hydrolysis of the catalyst during the hydrothermal aging treatment process. Ce doping increased the catalytic activity of Cu-SAPO-18 at low and high temperatures, which was attributed to modifications of the redox and/or isolated Cu2+ active centers.
Some New Results on Coincidence Points for Multivalued Suzuki-Type Mappings in Fairly Complete Spaces
Authors: Saleem Naeem , Habib Iqra , Sen Manuel De la
Published: March 2020

In this paper, we introduce Suzuki-type ( α , β , γ g ) - generalized and modified proximal contractive mappings. We establish some coincidence and best proximity point results in fairly complete spaces. Also, we provide coincidence and best proximity point results in partially ordered complete metric spaces for Suzuki-type ( α , β , γ g ) - generalized and modified proximal contractive mappings. Furthermore, some examples are presented in each section to elaborate and explain the usability of the obtained results. As an application, we obtain fixed-point results in metric spaces and in partially ordered metric spaces. The results obtained in this article further extend, modify and generalize the various results in the literature.
Dentoskeletal Class II Malocclusion: Maxillary Molar Distalization with No-Compliance Fixed Orthodontic Equipment
Authors: Quinzi Vincenzo , Marchetti Enrico , Guerriero Luigi , Bosco Floriana , Marzo Giuseppe , Mummolo Stefano
Published: March 2020

Dentoskeletal class II malocclusion due to a protruded upper dental arch is a major reason for an orthodontic treatment. In these cases, the correction of class II can be hindered by molar distalization, obtained with ‘no-compliance therapy’ that involves the use of appliances which minimize the need for such co-operation and attempt to maximize the predictability of results. The aim of this review was to outline the effectiveness of no-compliance fixed orthodontic devices in the molar distalization. After selection according to the inclusion/exclusion criteria, 16 articles from 2000 to 2019 were qualified for the final analysis. The literature shows various no-compliance fixed devices whose effect is to distalize the maxillary molars. The present revision allows to conclude that there is a need to increase the number of studies, especially with regard to the most recently introduced devices in the literature. The analysed studies allow to hypothesize that these appliances act with a minimal variability of molar distalization and disto-inclination among them, although different effects among the appliances can be observed as regards to the anchorage.
Carnot Cycle and Heat Engine: Fundamentals and Applications
Authors: Feidt Michel
Published: March 2020

After two years of exchange, this specific issue dedicated to the Carnot cycle and thermomechanical engines has been completed with ten papers including this editorial [...]
Mathematic Modelling and Numerical Analysis for a Novel Inner-Type Nutation Magnetic Drive
Authors: Lou Meiyan , Yao Ligang
Published: March 2020

This paper presents an inner-type of magnetic gears for non-contact driving, based on the nutation gearing principle. An improved three-dimensional analytical model, based on the magnetic vector potential of rectangular permanent magnets, via the equivalent current, is deduced for the proposed nutation magnetic gears. The transformation of coordinates is applied for a global field solution. The analytical model and the finite element model have analyzed the output torque of the nutation magnetic drive, respectively. The results show that the values calculated by the two models are consistent. The proposed analytical model can provide a reference for the design and optimization of nutation magnetic gears and other permanent magnetic mechanisms with rectangular magnets.
Assessment of Methods for the Real-Time Simulation of Electronic and Thermal Circuits
Authors: Rodríguez Borja , González Francisco , Naya Miguel Ángel , Cuadrado Javier
Published: March 2020

Time–domain simulation of electronic and thermal circuits is required by a large array of applications, such as the design and optimization of electric vehicle powertrain components. While efficient execution is always a desirable feature of simulation codes, in certain cases like System-in-the-Loop setups, real-time performance is demanded. Whether real-time code execution can be achieved or not in a particular case depends on a series of factors, which include the mathematical formulation of the equations that govern the system dynamics, the techniques used in code implementation, and the capabilities of the hardware architecture on which the simulation is run. In this work, we present an evaluation framework of numerical methods for the simulation of electronic and thermal circuits from the point of view of their ability to deliver real-time performance. The methods were compared using a set of nontrivial benchmark problems and relevant error metrics. The computational efficiency of the simulation codes was measured under different software and hardware environments, to determine the feasibility of using them in industrial applications with reduced computational power.
Investigating the Performance Capability of a Lithium-ion Battery System When Powering Future Pulsed Loads
Authors: Farrier Luke , Bucknall Richard
Published: March 2020

The supply of pulsed power loads is considered a key driver for the integration of energy storage systems (ESSs) with warship power systems. ESSs are identified as a means to offer fast response dynamics capable of driving pulsed loads for sustained periods. This paper contributes a novel investigation into the performance of a Nickel Manganese Cobalt based lithium-ion battery system to supply laser directed energy weapon (LDEW) loads for future warship combat power systems using time-domain simulation methodology. The approach describes a second order Thévenin equivalent circuit battery model validated against a battery module of a type used in commercial marine ESS. The ability of the battery system to power LDEW loads peaking at 2 MW for up to periods of four minutes were simulated for beginning of life (BoL) and degraded conditions. The repeatability of the pulsed power supply with ESS is also reported. Simulation results show that Quality of Power Supply (QPS) is maintained within acceptable transient tolerance using a feed-forward control circuit that controls the DC-DC converter interface between the battery system and the LDEW load. The results of the study demonstrate the battery system operating envelope for the LDEW under investigation.
Convective Heat Transfer Enhancement through Laser-Etched Heat Sinks: Elliptic Scale-Roughened and Cones Patterns
Authors: Ventola Luigi , Fasano Matteo , Cappabianca Roberta , Bergamasco Luca , Clerici Francesca , Scaltrito Luciano , Chiavazzo Eliodoro , Asinari Pietro
Published: March 2020

The efficient dissipation of localized heat flux by convection is a key request in several engineering applications, especially electronic ones. The recent advancements in manufacturing processes are unlocking the design and industrialization of heat exchangers with unprecedented geometric characteristics and, thus, performance. In this work, laser etching manufacturing technique is employed to develop metal surfaces with designed microstructured surface patterns. Such precise control of the solid-air interface (artificial roughness) allows to manufacture metal heat sinks with enhanced thermal transmittance with respect to traditional flat surfaces. Here, the thermal performance of these laser-etched devices is experimentally assessed by means of a wind tunnel in a fully turbulent regime. At the highest Reynolds number tested in the experiments ( R e L ≈ 16 , 500 ), elliptic scale-roughened surfaces show thermal transmittances improved by up to 81% with respect to heat sinks with flat surface. At similar testing conditions, cones patterns provide an enhancement in Nusselt number and thermal transmittance of up to 102% and 357%, respectively. The latter results are correlated with the main geometric and thermal fluid dynamics descriptors of the convective heat transfer process in order to achieve a predictive model of their performance. The experimental evidence shown in this work may encourage and guide a broader use of micro-patterned surfaces for enhancing convective heat transfer in heat exchangers.
New Adsorption Method for Moisture and Heat Exchange in Ventilation Systems in Cold Countries: Concept and Mathematical Simulation
Authors: Girnik Ilya , Yang Tianyu , Gordeeva Larisa , Wang Wenwen , Ge Tianshu , Aristov Yuri
Published: March 2020

Due to global climate change and fossil fuel depletion, the rational use of thermal energy has attracted great research interest. Large differences between indoor and outdoor temperatures in cold regions results in huge amounts of heat waste and drop in indoor humidity. Ventireg, an adsorption method, has been often recommended for heat and humidity regeneration in cold countries. In this research work, VentireC, an advanced method employing two thermally coupled adsorbent beds is discussed. It allows the heat released during adsorption of moisture in one adsorber to be transferred to another adsorber to facilitate water desorption. The VentireC approach is comprehensively analysed and described in this paper. A composite adsorbent based on LiCl in silica gel pores, which can exchange up to 0.5 g-H2O/g-sorbent, is selected for VentireC processes under cold Western Siberia conditions. Mathematical simulation of humidity recuperation, employing the selected sorbent with and without thermal coupling, demonstrates the advantages of the VentireC process.
Experimental Procedure for Fifth Generation (5G) Electromagnetic Field (EMF) Measurement and Maximum Power Extrapolation for Human Exposure Assessment
Authors: Franci Daniele , Coltellacci Stefano , Grillo Enrico , Pavoncello Settimio , Aureli Tommaso , Cintoli Rossana , Migliore Marco Donald
Published: March 2020

The fifth generation (5G) technology has been conceived to cover multiple usage scenarios from enhanced mobile broadband to ultra-reliable low-latency communications (URLLC) to massive machine type communications. However, the implementation of this new technology is causing increasing concern over the possible impact on health and safety arising from exposure to electromagnetic field radiated by 5G systems, making imperative the development of accurate electromagnetic field (EMF) measurement techniques and protocols. Measurement techniques used to assess the compliance with EMF exposure limits are object to international regulation. The basic principle of the assessment is to measure the power received from a constant radio frequency source, typically a pilot signal, and to apply a proper extrapolation factor. This kind of approach is standardized for 2G, 3G, and 4G technologies, but is still under investigation for 5G technology. Indeed, the use of flexible numerologies and advanced Time Division Duplexing (TDD) and spatial multiplexing techniques, such as beam sweeping and Massive Multiple Input Multiple Output (MIMO), requires the definition of new procedures and protocols for EMF measurement of 5G signals. In this paper a procedure for an accurate estimation of the instant maximum power received from a 5G source is proposed. The extrapolation technique is based on the introduction of proper factors that take into account the effect of the TDD and of the sweep beam in the measured value of the 5G signal level. Preliminary experimental investigation, based on code domain measurement of appropriate broadcast channels, and carried out in a controlled environment are reported, confirming the effectiveness of the proposed approach.