bluuebunny/crossref_metadata_2025 huggingface dataset:
Estrategias pedagógicas para el aprendizaje de las operaciones matemáticas básicas sin calculadora
Authors: Guzmán Arison , Ruiz Jessica , Sánchez Génesis
Published: March 2021

El presente trabajo tiene como objetivo presentar una experiencia de investigación acción, de corte cualitativo, en la que se diseñaron y ejecutaron secuencias didácticas enfocadas en la resolución de problemas de la vida cotidiana y el empleo de recursos lúdicos, para que los estudiantes de secundaria desarrollen la capacidad de efectuar las operaciones matemáticas básicas sin la necesidad de utilizar la calculadora. Se seleccionó una muestra de 33 estudiantes del 6to grado de secundaria, de un centro educativo ubicado en Los Alcarrizos, República Dominicana. La intervención consistió en el desarrollo de 20 actividades formativas que incluyeron: talleres de aprendizaje por descubrimiento, resolución de problemas, juegos educativos y elaboración de diario reflexivo. En los resultados se evidencia el aumento del nivel de dominio del estudiantado y mayor independencia del uso de la calculadora mientras resuelven problemas.
From Ordinances to legal norms: the trajectory of property rights in Brazil
Authors: Pereira Gislene
Published: March 2021

This text presents the trajectory of the concept of property rights in Brazil. Identifying the Philippine Ordinances as the historical origin of the legal norms that govern property rights in Brazil, this paper recognizes the permanence and transformations of the concept over time. Through the analysis of key legal documents of a national scope, the text follows the transformation process of the concept of property, defining the moments of inflection. From within this scenario, the future of the concept is discussed, considering the conditions in which the growing urbanization in Brazil occurs. Lastly, it is questioned whether it is possible for the analyzed trajectory to incorporate use as a defining aspect of property relations.
Política de renda básica à luz do feminismo interseccional
Authors: Fonseca Lorena
Published: March 2021

O presente trabalho apresenta a proposta de renda básica incondicional de Philippe Van Parijs, como um projeto de liberdade, contrapondo-a com o feminismo interseccional. O objetivo é analisar o impacto da política de renda básica para mulheres excluídas do feminismo hegemônico. Propõe-se, assim, ampliar o debate sobre renda básica incondicional para mulheres que vivenciam entraves à liberdade e à igualdade advindos da interseção entre gênero, raça e classe. A hipótese inicial desta pesquisa é que a teoria de Van Parijs conseguiria responder às objeções interseccionais que lhe são contrapostas. Por meio de uma revisão bibliográfica, a análise foi feita em termos de “opções e vida” e de “renda”. Concluiu-se que a proposição vanparijsiana, embora possa ser um instrumento de liberdade necessário, não consegue atender a integralidade dos desafios apresentados pelo feminismo interseccional, o que refuta hipótese inicial deste trabalho.
O. Goldsmith’s Oriental Parable in the Magazine Ni To Ni Sio (Neither This Nor That)
Authors: Trakhtenberg Lev A.
Published: March 2021

The essay argues that the oriental parable “Ziou-Zioung. A Chinese Anecdote” published in No. 9 of the magazine Ni To ni Sio (“Neither This nor That”) on April 25, 1769, is a fragment of “The Citizen of the World, or Letters from a Chinese Philosopher” by Oliver Goldsmith (1760–1761, book edition 1762), translated with some changes. The translation is presumably attributed to Fyodor Lazinsky. The paper traces the way of Goldsmith’s plot from the English original to the Russian version. The parable is taken from the French translation of Goldsmith’s book by P. Poivre (1763) and reprinted in the magazine Recueil pour l’esprit & pour le cœur under the title “Ziou-Zioung” (1764). The text of the French magazine is translated into German; it appears in Berlinisches Magazin (1765), from where it is borrowed by the Russian translator. The separation from the original context and a chain of transformations in successive translations, although each of these transformations is minor leads to a substantial change of meaning. While Goldsmith aims his satire at those who are proud of unworthy things, German and Russian versions condemn pride as such.
Knowledge, attitudes, and practices of smallholder farmers on foot and mouth disease control in two Cambodian provinces
Authors: Sieng Socheat , Patrick Ian , Windsor Peter , Walkden-Brown Steve , Sar Chetra , Smith Geoff , Kong Reatrey
Published: March 2021

Food-and-mouth disease (FMD) is endemic in Cambodia. The control program
for FMD has relied on vaccination, with poor vaccination uptake by
smallholder farmers an increasing concern. A study to improve the
understanding of farmer knowledge, attitudes and practices of FMD and
FMD vaccination was conducted in two Cambodian provinces. The aim was to
identify opportunities to improve the disease control programs provided
by both the government and private sectors. The survey comprised 300
smallholder farmers using a one-on-one interview technique. Results
identified that over two-thirds of the respondent farmers had not
vaccinated their cattle over two years. Of those who did, most cattle
were vaccinated either once a year or once every three years. A booster
had never been administered. FMD outbreaks occurred every year during
the study period, with a morbidity rate of over 30%. Isolation of first
infected cattle from the household herd was not practiced, with
treatment identified as the first preference intervention. Farmers often
assisted other farmers to restrain and treat infected cattle both before
(57%) and after (43%) their own cattle were infected. This indicated
that most farmers did not practice basic biosecurity measures and chose
to report FMD outbreaks to the village animal health workers (VAHW),
friends, neighbors, and relatives in preference to government officials.
It was concluded that poor knowledge of disease transmission and
biosecurity, with low FMD vaccination coverage and a focus on treatment,
contribute to regular FMD outbreaks in these communities. Improvement of
FMD control requires the cooperation of villagers, VAHWs, and village
leaders in disease reporting, with either improved funding of government
vaccination services or private FMD vaccination service. Training
programs for farmers on disease transmission, and the importance of
biosecurity and vaccination, including information on the cost-benefits
of treatment versus full fee bi-annual FMD vaccination, are required.
Risk of sick sinus syndrome in patients diagnosed with atrial fibrillation: a population-based cohort
Authors: Yang Pil-Sung , Kim Daehoon , Jang Eunsun , Yu Hee Tae , Kim Tae-Hoon , Sung Jung-Hoon , Pak Hui-Nam , Lee Moon-Hyoung , Joung Boyoung
Published: March 2021

Background: Sinoatrial node dysfunction and atrial fibrillation (AF)
frequently coexist and interact with each other, often to initiate and
perpetuate each other. Objective: To determine the effect of AF on the
incidence and risk of sick sinus syndrome (SSS). Methods: The
association of incident AF with the development of incident SSS was
assessed from 2004 to 2013 in 302,229 SSS- and pacemaker-free
participants aged ≥60 years in the Korea National Health Insurance
Service-Senior cohort. Results: During an observation period of
1,854,800 person-years, incident AF was observed in a total of 12,797
participants (0.69%/year). The incidence of SSS was 0.2 and 3.4 per
1000 person-years in the incident AF and the propensity score matched
no-AF groups, respectively. After adjustment, the risk of SSS caused by
incident AF was significantly increased, with a hazard ratio (HR) of
13.4 (95% confidence interval [CI]: 8.4–21.4). This finding was
consistently observed after censoring for heart failure (HR, 16.0; 95%
CI: 9.2–28.0) or heart failure/myocardial infarction (HR, 16.6; 95%
CI: 9.3-29.7). Incident AF also was associated with an increased risk of
pacemaker implantation related with both SSS (HR, 21.8; 95% CI:
8.7–18.4) and atrioventricular (AV) block (HR, 9.5; 95% CI:
4.9–18.4). These results were consistent regardless of sex and
comorbidities. Conclusion: Incident AF was associated with more than ten
times increased risk of SSS in an elderly population regardless of
comorbidities. Risk of pacemaker implantations related with both sinus
node dysfunction and AV block were increased in elderly population with
incident AF.
Clinical Efficiency of Narrow Band-Ultraviolet B Phototherapy and Methotrexate Therapy and their effects on Serum Tumor Necrosis Factor-Alpha in Patients with Cutaneous Lichen Planus.
Authors: El-Hamd Mohammed Abu , Ibrahim Hasan Mohamed , Mohammed Abdallah Elaiw , Mohammed Eisa
Published: March 2021

Objective: This study aimed to assess the clinical efficiency of Narrow
Band-Ultraviolet B (NB-UVB) phototherapy and methotrexate (MTX) therapy
and their effects on serum tumor necrosis factor-alpha (TNF-α) in
patients with cutaneous lichen planus (CLP). Methods: The present cohort
study was carried out on 60 patients with CLP who attended the
Out-patient Clinics of the Dermatology, Department, Faculty of Medicine,
Faculty of Medicine, South Valley University between May 2018 and
December 2019.The included patients were indiscriminately classified
into two treatment groups; group A (30 patients), received NB-UVB
phototherapy for three months and group B (30 patients), received MTX
therapy for three months. All the patients were assessed clinically and
TNF-α before and after treatments. Results: There were no statistically
significant differences between the two groups of treatment regard
clinical improvement after treatment (P=0.149). Regarding levels of
TNF-α, there was a statistically significant difference between the two
treatment groups after treatment (P=0.024). There was a statistically
significant reduction in TNF-α level after treatment in the MTX group.
Conclusion: This study concluded that NB-UVB phototherapy and MTX
therapy were clinically effective in the treatment of patients with CLP.
MTX therapy was more efficient in the reduction of TNF-α level than
NB-UVB phototherapy in patients with CLP.
SARS-CoV-2 tracheitis in laryngectomized patients: a consecutive case-series study.
Authors: Fernandez Ignacio , Spagnolo Federico , Valerini Sara , Mattioli Francesco , Marchioni Alessandro , Molteni Gabriele , lucidi daniela
Published: March 2021

Key points • SARS-CoV-2 is a possible cause of acute severe tracheitis
in laryngectomees. • In our series, the clinical picture was
characterized by a hemorrhagic tracheitis with a slow resolution
pattern. • We observed a histological pattern of erosive inflammation of
the respiratory epithelium. • Planned tracheo-bronchoscopy and tracheal
toilettes are recommended to prevent critical obstruction of the airway,
which can be fatal in patients with associated impairment of lung
function caused by SARS-CoV-2 infection. • The present cases highlight
the need for close interdisciplinary working and communication in the
management of airway complications of COVID-19 infection.
Analysis of the estimated remaining service life of gas rectification columns
Authors: Jaric Marko , Petronic Sanja , Budimir Nikola , Colic Katarina , Jeremic Lazar
Published: March 2021

Gas rectification columns are process apparatuses which are very important part of each onshore plant. Sudden failure of these types of columns causes huge daily losses, while fluid leakage can be very dangerous for the people and hazardous for the environment. For that reason, a regular and correct examination of the column is of great importance for the continual process of leading. Together with the detailed examination of the column, a risk-based inspection was applied to maximize savings, both material, time, and costs. The expected remaining service life of rectification columns was also analyzed, while the corrosion rates were calculated according to the various international standards. The minimum required column wall thickness was calculated according to the most commonly used international standard and the obtained difference was analyzed. Detailed analysis of the total risks of the column due to potential failure is presented.
Monorail System Feasibility Study for Developing Countries: The Case Study of Eskişehir-Turkey
Authors: YILDIZHAN Fatih , KARACASU Murat
Published: March 2021

The monorail system is one of the environmentally friendly, high-speed and high-capacity public transportation systems that have been used for more than 100 years. The Monorail system is less preferred than the tram, light rail transit and metro in developing countries. In this study, the possibility of the monorail system to be implemented an alternative to the traditional rail systems was examined in technical and economic terms. It has been determined that its features are in accordance with 21st-century technology and requirements. In the economic examination of the applicability of monorail in developing countries; by using the travel and cost data of Eskisehir-Turkey, economic and financial feasibility studies on two separate lines were made. According to the results of Eskişehir, for the countries which have 10% discount rate including Turkey, an increase in the number of daily passengers to 55 thousand or a decrease in construction costs to 15 million $/km could be sufficient in the economic analysis. Also, with current data, a discount rate of about 8% could be sufficient to be feasible. For financial analysis, the majority of costs could not be covered at a 10% discount rate and financial state support could be required. For financial analysis, a positive discount rate could not be sufficient to be feasible.
Investigation of the Effect of Different Screening Methods on Print Quality in Digital Printing System
Authors: ÖZOMAY Zafer , ŞAHİN Cengiz , KESKİN Bekir
Published: March 2021

Digital printing is the process of printing the designs and photos prepared in computer environment with advanced printing technologies on different materials in a high quality and fast way. The digital printing system, which is increasing its effectiveness today, has taken great steps with technology since the first years of its existence and has started to have a voice in the sector for the last ten years. The digital printing, which is an alternative to the offset printing system in making design a product, exhibits significant improvements in terms of production efficiency, cost and quality. Offset has become competitive with flexo printing with the developing color efficiency in digital printing machines. High quality and different applications can be made with digital printing machines. In order to achieve this (screening) process, it is necessary to know the boundaries of the color universe that can be seen or produced by the devices and machines used in the system. In this study, the difference between colors and color consistency and basic measurements such as color values, dot gain were evaluated by changing the selection of screen methods used in digital printing. The differences caused by the screening structure variable have been shown with graphics and tables, then suggestions have been made. It has been determined that the change in the screening structures in digital printing creates differences in dot swelling, density and color.
La escritura textual narrativa en el aprendizaje de estudiantes en Educación
Authors: Verástica Cháidez María Luisa Guadalupe , Salazar González Crisanto
Published: March 2021

En este artículo se presentan resultados parciales de una investigación que buscó identificar las prácticas de escritura en alumnos de la licenciatura en Educación Media de la Universidad Autónoma de Sinaloa, con el objetivo de examinar cuáles son los textos en el aprendizaje de la disciplina profesional. La metodología es de corte cualitativo. La recolección de datos fue vía entrevista semiestructurada con enfoque sociocultural. Las entrevistas se aplicaron a 21 sujetos de un grupo de octavo semestre y a cuatro de sus profesores. En los fundamentos teóricos se abordan la práctica social de la cultura escrita, las dificultades al escribir textos académicos, la escritura desde las asignaturas y durante los estudios universitarios, la revisión grupal de discursos que abona a la reescritura personal y la inclusión de centros de escritura. Como parte de los resultados, los alumnos expresaron que destinan en promedio ocho horas por semana para componer y sustentar un escrito; tienen preferencia por la redacción del discurso literario, dificultad para escribir atendiendo la cuestión gramatical, predisposición por trazar una ruta o plan que guiará el texto, una inclinación por redactar en solitario y una tendencia a elaborar textos en un entorno limpio, luminoso, fresco, tranquilo, con mesas grandes, fijas, y con ventanas con vista a árboles. En las respuestas de los profesores destaca que los jóvenes recurren al texto narrativo para darle forma a distintos trabajos solicitados. Dentro de las conclusiones está el hecho de que la composición escritural en la universidad demanda acciones de reescritura en compañía y de forma grupal a fin de promover el aprendizaje personal. Esto apunta a la inclusión de centros de escritura donde sea posible partir de estructuras narrativas para encaminarse hacia la construcción de textos académicos.
Analyzing a Net Zero Energy Building (NZEB) in the Climate Zone of Australia
Authors: Patel Jay
Published: March 2021

Buildings and Residential sectors are amongst the major energy consumers of Australia. But the maximum portion of the energy consumed by these buildings is lost due to construction, design, or use of appliances. A significant amount of energy can be saved through this sector, which will not only reduce energy demand, it would further remove a major load from the National Grid. This study assessed a building in the residential sector of Australia and proposed how the use of Passive, Active techniques and adoption of the NZEB concept can help save energy consumption of residential houses. Different techniques and their implementation in the building were performed through both qualitative and quantitative analysis.  The results obtained from the study show the house load of the designed building, a solar system that can take up the entire load, its financial assessment, and how the use of energy-efficient appliances and the use of passive techniques can result in improvement of energy efficiency.
UJI KOGNITIF MENCIT (Mus musculus L.) JANTAN BERBEDA UMUR YANG DIBERI EKSTRAK LADA HITAM (Piper nigrum L.)
Authors: Sapitri Monica , Kanedi M. , Busman Hendri , Sutyarso Sutyarso
Published: March 2021

Lada hitam adalah salah satu jenis rempah yang diketahui mengandung antioksidan. Antioksidan adalah zat yang dipercayadapat menghambat proses penuaan. Penuaan ditandai dengan menurunnya berbagai fungsi organ tubuh, termasuk otak sehingga berdampak pada menurunnya daya ingat. Penelitian ini bertujuan mengetahui pengaruh pemberian ekstrak lada hitam terhadap daya ingat mencit (Mus musculus L.).Empat puluh ekor mencit jantan, masing-masing 20 ekor berumur 4 bulan (muda) dan 20 ekor berumur 6 bulan (tua), diberi empat perlakuan yaitu : tanpa ekstrak sebagai kontrol (K), ekstrak air (A), ekstrak etanol (E), dan ekstrak campuran air-etanol (C). Data dianalisis menggunakan Sidik Ragam 2 Jalur (Two Ways ANOVA). Hasil penelitian menunjukkan bahwa mencit tua lebih cepat mengingat jalur dalam uji labirin, tetapi cendrung tidak berbeda dengan mencit muda dalam mengingat balok pijakan pada uji renang. Melalui uji labirin, daya ingat mencit muda dan tua yang diberi ekstrak lada hitam terbukti lebih baik dari pada yang tidak diberi. Sedangkan dalam uji renang, daya ingat mencit muda lebih baik pada yang diberi ekstrak air, sedangkan pada mencit tua hanya ekstrak campuran yang bisa membuat daya ingat lebih baik.
PERTUMBUHAN DAN KANDUNGAN GIZI Nannochloropsis sp. YANG DIISOLASI DARI LAMPUNG MANGROVE CENTER DENGAN PEMBERIAN DOSIS UREA BERBEDA PADA KULTUR SKALA LABORATORIUM
Authors: Daefi Tiara , Tugiyono Tugiyono , Rusyani Emmy , Murwani Sri
Published: March 2021

Penelitian ini bertujuan untuk mengetahui pertumbuhan dan kandungan gizi Nannochloropsis sp. yang diisolasi dari Lampung Mangrove Center dengan pemberian dosis urea berbeda pada kultur skala laboratorium dan untuk menentukan dosis urea paling efektif dalam media pupuk pertanian terhadap pertumbuhan dan kandungan gizi Nannochloropsis sp. Penelitian dilaksanakan pada bulan Juli-Oktober 2016 di Lampung Mangrove Center dan Laboratorium Fitoplankton, Divisi Pakan Hidup, Balai Besar Perikanan Budidaya Laut (BBPBL) Lampung. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) empat perlakuan (A-D) dan lima ulangan. Perlakuan A (Urea 30 ppm; ZA 20 ppm; TSP 10 ppm); B (Urea 40 ppm; ZA 20 ppm; TSP 10 ppm); C (Urea 50 ppm; ZA 20 ppm; TSP 10 ppm); dan D (Conwy sebagai kontrol). Parameter yang diamati yaitu pertumbuhan (kepadatan populasi, laju pertumbuhan spesifik dan waktu generasi) dan kandungan gizi (kadar protein, lemak dan karbohidrat) Nannochloropsis sp. Data pertumbuhan dianalisis menggunakan analisis varian satu arah dan diuji lanjut Beda Nyata Terkecil (BNT) pada selang kepercayaan 95%. Data kandungan gizi dianalisis secara deskriptif. Hasil penelitian menunjukkan bahwa pemberian dosis urea berbeda pada kultur skala laboratorium memiliki perbedaan yang nyata terhadap pertumbuhan (kepadatan populasi maksimum, laju pertumbuhan spesifik dan waktu generasi) Nannochloropsis sp. Pemberian dosis urea 50 ppm paling efektif untuk meningkatkan pertumbuhan Nannochloropsis sp. dan pemberian dosis urea 40 ppm paling efektif untuk meningkatkan kandungan gizi Nannochloropsis sp. mencapai 67,538%.
PENGARUH DUA JENIS PAKAN TERHADAP LAMA STADIUM LARVA KUMBANG Tenebrio molitor (COLEOPTERA: TENEBRIONIDAE)
Authors: Rahmawati Rahmawati , Nukmal Nismah , Suratman Suratman
Published: March 2021

Tenebrio molitor merupakan serangga yang memiliki nilai ekonomis dan mudah dipelihara. Pemberian pakan yang tepat dapat meningkatkan pertumbuhan dan reproduksi dari T. molitor. Ragi merupakan pakan utama T. molitor yang dapat meningkatkan proses pencernaannya sehingga pertumbuhan dapat mencapai optimal. Sedangkan styrofoam merupakan bahan polistiren yang dapat menjadi pakan alternatif bagi T. molitor. Tujuan penelitian ini adalah untuk mengetahui pengaruh dua jenis pakan (ragi dan styrofoam) terhadap lama stadium larva kumbang T. molitor. Metode yang digunakan dalam penelitian ini adalah metode eksperimen skala laboratorium menggunakan Rancangan Acak Kelompok dengan 10 kali pengulangan. Parameter yang diamati dalam penelitian adalah panjang larva, berat larva, lama stadium larva, dan berat pakan yang dimakan. Data yang diperoleh dari penelitian selanjutnya dianalisis dengan uji T. Hasil penelitian menunjukkan bahwa perbedaan pakan mempengaruhi berat larva, panjang larva, dan lama stadium larva (p < 0,05). Larva T. molitor yang diberi pakan ragi lebih singkat stadiumnya dibandingkan dengan yang diberi pakan styrofoam.
PENURUNAN LAJU PENUAAN REPRODUKSI MENCIT JANTAN (Mus muculus.Linn) DENGAN PEMBERIAN EKSTRAK JAHE (Zingiber officinale) DALAM PAKAN
Authors: Sutyarso Sutyarso , Annida Sumayyah , Kanedi M. , Busman Hendri , Nurcahyani Nuning
Published: March 2021

The ginger rhizome contains antioxidants and is chemoprotective, therefore we suspect it can decrease the aging rate in the reproductive system. The purpose of this study, to determine the effect of ginger extract (Zingiber officinale) against reproductive aging of male mice (Mus musculus). This study, using 36 male mice (Mus musculus) aged 12-14 months, divided into three groups each 12 tails. Group 1 as controls, groups 2 and 3 were given 50 mg and 100 mg ginger extract / kg of pellets. The pellet is given for 70 days ad libitum. Next, observed the number of spermatogenic cells, as well as the number and quality of spermatozoa. The results showed that ginger extract had an effect on spermatogenic and spermatozoa (P <0,01) cells of mice. The results of preleptotene spermatocyte, pakhiten and spermatid spermatocyte counts were higher, as were the number of spermatozoa, the percentage of viability and motility, and the normal morphology of spermatozoa were more in the group given ginger extract than control (P <0.01). It was concluded that ginger rhizome extract given to mice entering the aging period could inhibit the rate of decline in reproductive function.
RESPON PERKECAMBAHAN BENIH KEMIRI SUNAN (Reutealis trisperma) TERHADAP SKARIFIKASI KIMIA DENGAN ASAM SULFAT (H2SO4) PADA BERBAGAI LAMA WAKTU PERENDAMAN
Authors: Ismail Ahmad Deni , Duryat Duryat
Published: March 2021

The duration of submersion and the level of acid concentration which are the decisive factors to succed the chemical scarification. The duration of submersion should be adjusted to the level of seed skin thickness, the level of acid concentration and the type of acid used. This study aimed to analyze the inmersion effect of kemiri sunan seeds in sulfuric acid solution to break the seed dormancy and to get the most effective time of submersion in order to break the dormancy of kemiri sunan seed. The experiment was conducted in the greenhouse for 2 months (62 days). The randomized complete design was employed as experimental method. There were 4 treament tested, i.e : (1) control (without immersion in H2SO4 solution); (2) immersion in H2SO4 solution for 10 minutes; (3) immersion in H2SO4 solution for 20 minutes and (4) immersion in H2SO4 solution for 30 minutes. The results of research showed that control gave the best results in term of the percentage of germination (G), mean daily gremination (MDG), and germination rate (GR)
Stomata Index of Cattleya sp. Lindl., Planlet in Drought-Stress Conditions
Authors: Paletri Tara Sesafia , Nurcahyani Endang , Yulianty Yulianty , Agustrina Rochmah
Published: March 2021

Cattleya was one of the most popular orchids by Indonesian. Constraints in cultivating Cattleya included the lack of water availability in an area, causing drought stress. Stress in drought in vitro can be simulated by adding Poly Ethylene Glycol 6000 and growth regulators in atonic form. The purpose was to determine the effect of atonic solution and PEG 6000 on the stomata index toward in vitro drought stress conditions. This study was carried out in a 3 x 3 factorial experiment. Factor A was an atonic solution with 3 concentration levels: 0 mL/L, 2 mL/L, and 3 mL/L. Factor B is PEG 6000 with 3 concentration levels: 0% b/v, 20% b/v, 25% b/v. The results showed that the higher the concentration of PEG 6000 and atonic concentrations caused a decrease in the stomata index of Cattleya orchid plantlets under drought stress conditions in vitro.
Prevelance of Emeria Genera Upon Coccidiosis Infection Toward Male Layer
Authors: Rosa Emantis , Yulian Nadia Eka , Santosa Purnama Edy
Published: March 2021

Chicken is one of the bird species used as a source of animal protein which is very enjoyable and known by society. One chicken species that widely cultivated are the male layer. However, there was frequently obstacle in the maintenance, one is caused by parasite species of coccidia that causes coccidiosis. This research is conducted in November 2016 on a livestock farm, Kelurahan Segalamider, Kecamatan Tanjung Karang Barat, Kota Bandar Lampung. This research aims to determine the type of parasite egg that causes coccidiosis and to determine the prevalence of coccidia attack on the male layer. This research uses a proportionate clustered random sampling method, which took 100 samples of the male layer faces randomly from each cage as much as 25 samples. The identification using the guide book of Conway and McKenzie (2007) and the calculation of the number of parasite eggs using EPG  Mc. Master assay in Balai Veteriner Lampung. Data were analyzed descriptively by displaying data in tables and figures. The result showed that there are five species of Eimeria, namely Eimeria tenella, Eimeria maxima, Eimeria brunetti, Eimeria nikamae, and Eimeria mitis that found in oocyst sporulated form and oocyst not sporulated. The parasite causes coccidiosis in the male layer is Eimeria tenella with prevalence values of coccidia attack by 20%.
Ant Diversity (Hymenoptera: Formicidae: Myrmicinae) in Three Housing Types in Bandar Lampung
Authors: Rosnadi Ahmad Fauzi , Saputri Dwijowati Aji , Kamelia Marlina
Published: March 2021

Bandar Lampung City has a population of 1.051.500 people with a density of 3.308,4 people/km2 in 2018. The population is densely accompanied by residential developments, one of which is housing. Housing in the city of Bandar Lampung amounted to 220 housing estates in 2018 consisting of types 21, 36, 45.54, and 70. Rapidly increasing development certainly affected the surrounding ecosystem. The ant is one indicator of change in the environment. Therefore it is important to research the identification of Myrmicinae ants in three types of housing in Bandar Lampung City. The research was conducted in November - October 2018. This type of research is quantitative with survey methods. The housing of each type is selected by random sampling then ant samples are taken using the standardized transect method. Two transects were installed in the yard of the house and a roadside transect. The ants obtained were identified using photographs, images and the key of determination. The results showed that there were 5 species of Myrmicinae from 3 genera namely Solenopsis geminata, Solenopsis invicta, Solenopsis molest, Tetramorium sp., and Monomorium sp. The most dominant subfamily Formicidae habitats are in the house and terrace house.
Organ-Protective Effect of Red Ginger Extracts in Male Mice Induced by Paraquat
Authors: Tsany Kamiliah , Sutyarso Sutyarso , Kanedi M. , Busman Hendri
Published: March 2021

Paraquat is a toxic compound that disrupts biochemical processes in the body, cell death, and multi-organ failure. The liver and lung are the target organ of paraquat toxicity. The body needs antioxidants to counteract free radicals. Red ginger (Zingiber officinale Roxb. Var rubrum) is a spice that contains antioxidants. This study was conducted to determine the effect of ethanol extract of red ginger (Zingiber officinale Roxb. Var rubrum) on liver and lung histology male mice induced by paraquat. The research used completely randomized design and use of 6 treatment groups, i.e. control group (given distilled water and standard feed), PQ group (induced by paraquat 20 mg/kg per BW), group P1 (given paraquat and ethanol extracts of red ginger 200 mg/kg per BW), group P2 (given paraquat and ethanol extract of red ginger 400 mg/kg per BW), group P3 (given paraquat and ethanol extract of red ginger 600 mg/kg per BW), group P4 (given ethanol extract of red ginger extract 600 mg/kg per BW). The data obtained will be tested using One Way ANOVA and continued by Least Significant Difference (LSD) with a 95% confidence level. The results showed ethanol extract of red ginger effective against liver and lung histology male mice induced by paraquat. The results also showed ethanol extract of red ginger with a dose of 400 mg/kg per BW is effective in protecting the liver and lung from damage caused induced by paraquat.
Local Knowledge of Traditional Physician of Medicinal Plants
Authors: Kurniati Salma Indah , Yulianty Yulianty , Handayani Tundjung Tripeni , Lande Martha L.
Published: March 2021

Traditional medicine in modern era has not been completely abandoned. Now, Traditional medicine is being used again as a substitute for the use of chemical drugs. West Baturaja, Ogan Komering Ulu, located in South Sumatra is an area in Indonesia that still uses traditional medicine. This research is conducted to study the knowledge of Traditional Physician in using medicinal plants for treatment in West Baturaja, Ogan Komering Ulu, South Sumatra. This research was conducted in 5 villages in West Baturaja. We interviewed 8 Traditional Physician from 5 villages, i.e. Talang Jawa Village (4 people), Air Gading (1 people), Saung Naga (1 people), Batu Putih (1 people), and Pusar village (1 people). The Result obtained that there are 140 types of medicinal plants from 60 families. The most widely used is the Zingiberaceae. The most widely used plant habitus is a bush. The most widely used part is the leaves. The way of processing is boiled then taken by the patient. The most commonly treated disease is diabetes.
The Most Abundant Ferns in Utilization Block of Sumber Agung Resort Bandar Lampung Taman Hutan Raya Wan Abdul Rachman Lampung
Authors: Zarkoni Zarkoni , Yulianty Yulianty , Irawan Bambang , Suratman Suratman
Published: March 2021

Taman Hutan Raya Wan Abdul Rachman (Tahura WAR) is a protected forest area and habitat for various types of plants and animals. Tahura WAR is an area that has a high diversity of ferns, ferns are quite heterogeneous plants both in terms of habitat and way of life, ferns are one group of vascular plants that have a fairly high number of species, live in nature, some are attached to tree trunk (epiphyte) or grow on the ground. This research was carried out in the utilization block of Sumber Agung, which focused on fern species diversity, diversity, dominant species, and descriptions of types of ferns. This research was carried out by direct observation based on the existence of all types of ferns that are considered to represent the place. Based on observations in general, ferns are composed of 37 species, 28 genera, and 14 families. The highest number of ferns is Polypodiaceae with 8 species. With the Shannon-Wienner (H') diversity index of H’= 2.9. Type N. acutifolia dominates this research area with an INP value of 25.8%.
The Effect of Magnetic Induction on Seeds Infected Fusarium Sp. Toward Generative Growth of Red Chili (Capsicum annuum. L)
Authors: Agustrina Rochmah , Hernawati Berekhya Glori , Yulianty Yulianty , Irawan Bambang
Published: March 2021

Magnetic fields are proven to improve the quality of growth of various plants. In the study, it was examined whether the treatment of magnetic fields on chili seeds (Capsicum annuum. L) infected by Fusarium sp. could maintain plant growth to the generative phase. This research is two-factor research using a randomized block design. The first factor is the 0.2 mT magnetic field induction treatment consisting of 7 minutes 48 seconds (M7), 15 minutes 36 seconds (M15) and control (M0) as control and the second factor is the Fusarium oxysporum infection treatment consisting of 60 minutes infected (F60) and not infected (F0). Each treatment unit was repeated 5 times. Data obtained were analyzed for variance at a 5% significance level. The results of the analysis showed that the treatments in this study did not provide significant differences in carbohydrate content, flowering speed and number of flowers, as well as the fruiting rate of plants from seeds infected with Fusarium sp (M0F60, M7, F60, and M15F60), thus the magnetic field treatment could be causing plants to be resistant to Fusarium sp. so plants from seeds infected with Fusarium sp. able to flower and bear fruit at the same speed and produce the same amount of interest.
Lipolytic-screening of Bacillus genera as Biocontrol candidate In Coffee Plantation
Authors: Ervina Ema , Ekowati Cristina Nugroho , Sumardi Sumardi , Rosa Emantis
Published: March 2021

Problems in decreasing coffee production one of them caused by plant pests attack. Countermeasures using pesticides and disinfectants are not effective because they have long effects and ruining the environment also pest resistance. It is necessary to prevent a more environmentally friendly way by utilizing a natural enemy in the form of a microorganism, the genus Bacillus. Lipase can hydrolyze lipids so that it can be used to degrade lipid substrates that compile the body structure of pests and diseases. This research aims to detect the lipolytic activity of Bacillus isolates from coffee plantations. The results of this research obtained 3 isolates of Bacillus namely T1, T2, and T3 which have differences in cell configuration and variations in the location of endospores. Furthermore, Bacillus isolates were detected lipolytic activity by growing isolates on lipase selective medium. Isolates that have the largest lipolytic activity are T2 isolate codes with an average index of 6.01 and the lowest lipolytic activity, namely, isolate T1 codes with an average index of 4.58.
Morphological Characteristics of Araceae Plants in Liwa Botanical Garden, West Lampung
Authors: Wilyasari Risa Suryani , Yulianty Yulianty , Zulkifli Zulkifli , Nurcahyani Endang
Published: March 2021

Araceae is one type of plant that has a fairly high level of diversity and also rich in benefits such as a source of food, ornamental plants, and medicine. Research on the characteristics of Araceae in Indonesia is still limited. The purpose of this study was to identify Araceaeplants based on morphological structure and analyze the morphological characteristics ofAraceae in Liwa Botanical Garden, West Lampung. This research was conducted from November 2019 to January 2020. Data were collected at Liwa Botanical Garden, WestLampung based on exploration and observation collection methods. Morphological structure data were analyzed as descriptive and qualitative. The parts of plants that are compared between Araceae plants are the shape, size of leaves, petiole, and inflorescences. Observations show that 21 genera of Araceae are consisting of 26 plants. Araceae plants have three different ways of life, namely terrestrial, epiphytic, and aquatic. The shape of the leaves is ovatus, cordatus, lanceolatus, cuneatus, needle, peltatus, sagittatus, hastatus, palmatisect, bipinnatisect and tripinnatisect. The characteristics of this plant have compound interest with cob types (spadix) which are covered by a spatha with two types of inflorescences, namely unisexual and bisexual.
The Effect of Cocopeat and Charcoal Combination in Growing Media of Green Mustard (Brassica rapa L.) Var. Parachinensis Growth
Authors: Kesti Masniar Vina , Irawan Bambang , Priyambodo Priyambodo , Lande Martha Lulus
Published: March 2021

Green mustard is one type of vegetable that is easily cultivated and has good prospects to increase farmers' income and community nutrition. Growing media is a material that is useful as a place to stand upright seedlings, to develop seedling roots, to store water, gas, and nutrients needed for seedling growth. The purpose of this study is a). to determine the effect of using a combination of cocopeat and charcoal as a medium for planting mustard greens, b). to get the best dosage of the composition of the growing medium on the growth of mustard greens. The study was conducted in a completely randomized design (CRD) with 4 treatments and 6 replications. The data were analyzed by analysis of variance (ANOVA) and further tested with the Least Significant Difference test (LSD) = 5%. The results showed that the use of cocopeat growing media and charcoal influenced germination and vigor index. Cocopeat and charcoal have a significant effect on fresh and dry weight and chlorophyll content of mustard greens. The mixture of cocopeat growing media and charcoal on P1 did not affect the growth of green mustard on the dry weight. Fresh weight gave a significant effect on K1 and P1 was also significantly different from P2 and P3.
THE NUMBER of (Aedes sp.) EGGS LAYING ON DIFFERENCES TIPE AND SPECIES OF PHYTOTELMATA IN AREA OF LAMPUNG UNIVERSITY
Authors: Ramadhanti Saskya , ROSA EMANTIS , Rustiati Elly Lestari , Tugiyono Tugiyono
Published: March 2021

Phytotelmata is the part of a plant that can collect water and can be used as a natural breeding site for insects including mosquitoes. This research was conducted in August-December 2019 in the University of Lampung to find out the number of egg in phytotelmata and find the type and species of phytotelmata which are natural breeding site for Aedes sp. This study used an observatory method with a descriptive approach in the field. Analysis data was done using ANOVA and continued with the BNT test with 95% (a=5%) confidence. This research show that it found 3 types of phytotelmata like fruit hole, tree hole, axillary with six species of Phytotelmata such as Cocos nucifera, Artocarpus heterophyllus, Bambusa sp., Bauhinia purpurea, Colocasia esculenta, and Musa paradisiaca. The most potential species of phytotelmata became the natural breeding site for Aedes sp. mosquito is a Cocos nucifera with an average of 16,33 eggs.
EFFECT OF POLYETHYLENE GLYCOL (PEG) 6000 ON GREEN MUSTARD (Brassica juncea L.) GERMINATION AND GROWTH
Authors: Nusantara Garri Abdi , Handayani Tundjung T. , Zulkifli Zulkifli , Wahyuningsih Sri
Published: March 2021

The frequent drought in Indonesia has caused many farmers to experience a decline in vegetable production, one of which is green mustard. The green mustard is not resistant to drought, so water supply is an aspect that must be given special attention in cultivating green mustard. The objective of this study was to know whether the seedling and growth of seedling of green mustard (Brassica juncea L.) can grow well under drought stress by Polyethylene glycol 6000. This study was conducted in the Laboratory of Plant Physiology, Department of Biology, Faculty of Mathematics and Natural Science, the University of Lampung in 2019. This study was conducted in a Completely Randomized Design with the main factor is Polyethylene glycol 6000 with three levels: 0% w/v, 10% w/v, 20% w/v, and 30% w/v. Each combination of treatments was repeated five times. The number of the experimental unit was 20. The observed variables in this study were the percentage of seed germination, length of leaf, the width of leaf, a,b chlorophyll content, and total chlorophyll content. The data was homogenize using the Levene test, then continued to analyze using ANOVA at a 5% significant level and proceed with HSD test significant level 5% to determine the differences between the treatment. The result showed that under drought stress by Polyethylene glycol 6000 started to affect green mustard seedling and growth of seedling at the level of PEG 6000 concentration 20% w/v while the number of leaves not affected. The conclusion was PEG 6000 gave a negative impact on the green mustard and the green mustard induced by PEG 6000 10% w/v more adaptive than PEG 6000 20 w/v.
ANÁLISE DE AGRUPAMENTO BASEADO EM CARACTERÍSTICAS MORFOLÓGICAS DE LEGUMINOSAS DE VÁRZEA COM FINS TAXONÔMICOS
Authors: Soares Rubiene Neto , Santos Ronaldo Oliveira dos , Lima Robson Borges de , Silva Breno Marques da silva e
Published: March 2021

Objetivou-se verificar a viabilidade de um agrupamento taxonômico das espécies arbóreas de floresta de várzea da família Leguminosae por meio das características morfométricas do fruto, semente e plântulas. As seleções das espécies para a realização das análises foram com base em trabalhos fitossociológicos realizados no estado do Amapá. Em seguida, realizou-se um levantamento bibliográfico referente às características morfométricas de fruto, semente e plântula para cada espécie, disponíveis em periódicos científicos, além de consultas em exsicatas nos herbários. Utilizou-se apenas 41 caracteres para análise de agrupamento, considerando aquelas mais presentes entre as espécies. Para o agrupamento, utilizou-se do coeficiente de Jaccard e da técnica de classificação por média de grupos (UPGMA). As características de frutos e sementes mostraram-se bastantes eficientes na diferenciação e classificação das espécies em nível de subfamília e gênero. A utilização de características de plântulas em análise de similaridade mostrou-se mais eficiente em estudos considerando o agrupamento em nível de gêneros seguindo uma padronização prévia. Assim, entende-se que com a correta descrição morfológica das espécies em ambientes naturais é possível realizar análise de classificação e diferenciação entre gêneros ou subfamílias, a qual acaba se tornando uma abordagem de baixo custo em comparação aos estudos que utilizam análise genética.
Validitas dan Praktikalitas Media Pembelajaran PowerPoint-iSpring Terintegrasi Pertanyaan Prompting pada Materi Larutan Elektrolit dan Nonelektrolit kelas X SMA/MA
Authors: Saputri Yedia Geni , Guspatni Guspatni
Published: March 2021

Materi larutan elektrolit dan non elektrolit pada dasarnya membahas mengenai topik-topik yang bersifat abstrak sehingga perlu pemahaman pada level makroskopik, submikroskopik, dan simbolik. Penelitian ini bertujuan untuk mengembangkan multimedia pembelajaran PowerPoint-iSpring terintegrasi pertanyaan prompting pada materi larutan elektrolit dan non elektrolit yang dapat menuntun siswa menemukan konsep sendiri. Jenis penelitian yang dilakukan yaitu Research and Development (R & D) dengan model 4D yang terdiri atas 4 tahapan yaitu define, design, develop, dan disseminate, penelitian ini dibatasi hingga tahap develop. Penentuan uji validitas dan praktikalitas multimedia pembelajaran PowerPoint-iSpring menggunakan instrumen penelitian berupa angket validasi dan praktikalitas. Validasi dilakukan oleh 5 orang validator. Penentuan tingkat praktikalitas dilakukan oleh 20 orang siswa kelas XI dan 2 orang guru kimia. Teknik analisis data yang digunakan untuk menentukan validitas yaitu teknik Aiken’s V dan praktikalitas menggunakan rumus % praktikalitas. Hasil analisis data validitas multimedia pembelajaran memiliki nilai rata-rata Aiken’s V sebesar 0,85 dengan kategori valid dan tingkat praktikalitas guru sebesar 88% dengan kategori sangat praktis serta tingkat praktikalitas siswa sebesar 86% dengan kategori sangat praktis. Hasil analisis validitas dan praktikalitas tersebut menunjukkan bahwa multimedia pembelajaran PowerPoint-iSpring terintegrasi pertanyaan prompting yang dikembangkan sudah valid dan praktis.
Pengembangan Modul Senyawa Hidrokarbon Berbasis Pendekatan Saintifik Dengan Pertanyaan Probing Promting Untuk Siswa Kelas XI SMA/MA
Authors: Firdaus Amalia , Ellizar Ellizar
Published: March 2021

Variasi bahan ajar yang bisa membuat peserta didik aktif salah satunya ialah modul kimia berbasis pendekatan saintifik dengan pertanyaan probing promting. Maksud dari riset ini ialah untuk mengembangkan modul senyawa hidrokarbon berbasis pendekatan saintifik dengan pertanyaan probing promting serta melakukan uji validitas dan praktikalitas produk yang dihasilkan. Jenis reserch ini ialah reserch and development (R&D) menggunakan model pengembangan plomp. Model pengembangan plomp memiliki 3 tahap yaitu tahap penelitian awal (preliminary reserch), tahap pengembangan (prototype phase) dan tahap penilaian (assesment phase). Validasi dilakukan oleh 5 orang validator dan uji small group oleh 6 orang peserta didik serta dilakukan uji lapangan terhadap 13 orang peserta didik di sman 1 pasaman. Instrumen penelitian ini menggunakan angket yang terdiri dari angket validitas dan angket praktikalitas, teknik pengumpulan data melalui pengisian angket. Data angket validasi di analisis menggunakan formula aikens’v dengan nilai rata-rata v sebesar 0,83 dengan kategori valid. Uji praktikalitas di analisis menggunakan formula statistik deskriptif dengan nilai praktikalitas pada kelompok kecil diperoleh hasil 88% dengan kategori sangat praktis. Hasil uji praktikalitas pada uji lapangan pada angket respon tenaga pendidikialah 88% serta angket respon siswaialah 90% dengan kategori sangat praktis.
Pengembangan Media Pembelajaran Permainan Monopoli Kimia pada Materi Sistem Koloid Kelas XI MIPA SMA/MA
Authors: Trizulva Winda , Gazali Fauzana
Published: March 2021

Penelitian ini bertujuan untuk mengembangkan media permainan monopoli kimia pada materi sistem koloid kelas XI MIPA SMA. Jenis penelitian ini adalah penelitian Research and Development (R&D) menggunakan model 4-D yang terdiri atas 4 tahap yaitu : (1) define (pendefenisian), (2) design (perancangan), (3) develop (pengembangan), dan (4) disseminate (penyebaran). Penelitian ini dibatasi sampai tahap develop (pengembangan) yakni sampai penentuan tingkat  validitas media permainan monopoli kimia.Pengembangan permainan monopoli kimia uji validitasnya dilakukan oleh  tiga dosen kimia FMIPA UNP dan dua guru kimia SMA N 2 Koto XI Tarusan. Teknik analisis data menggunakan indeks Aiken’s V dan diperoleh nilai rata-rata sebesar 0.90 dengan kategori valid. Dengan demikian data ini menunjukkan bahwa media permainan monopoli kimia yang telah dikembangkan pada materi sistem koloid valid.