bluuebunny/crossref_metadata_2025 huggingface dataset:
Análisis bibliométrico de las tesis de pregrado en la Facultad de Educación y Ciencias Sociales de la Universidad Adventista de Chile, en el período 2008-2018
Authors: Reyes Rodríguez Alixon , Labra Julia , Méndez Bertha , Gutiérrez-Jeldres Lorena , Federico-Tuccelli Leonel , Vezzoli-Lara Fanny
Published: March 2021

El presente trabajo tiene como propósito el análisis bibliométrico de las tesis realizadas en las carreras de la Facultad de Educación y Ciencias Sociales de la Universidad Adventista de Chile entre 2008 y 2018. Los resultados evidencian 379 investigaciones en modalidad y formato tesis. Los años 2008 y 2018 son los más productivos con 40 estudios cada uno y las carreras más productivas son: Pedagogía en Educación General Básica y Pedagogía en Educación Física, con 79 y 57 trabajos respectivamente. Sobre el 80 % de los tutores tiene posgrado y prevalece la metodología cuantitativa en los estudios. A pesar del universo de trabajos finalizados, no se priorizó la publicación de estos en su momento. La investigación en pregrado apunta al enfoque cuantitativo, elemento que implica fomentar otros enfoques para el abordaje y la diversidad epistemológica, más aún al tratarse de una facultad de Educación y Ciencias Sociales.
Обеспечение инновации ценности в сфере девелопмента недвижимости
Authors: Орлов А.К. , Чубаркина И.Ю.
Published: March 2021

Проанализированы и представлены в виде ценностного подхода применительно к сфере девелопмента недвижимости основные положения стратегии «голубого океана». Ценностный подход может быть использован как для проектов, предполагающих исключительно бюджетное финансирование, так и для проектов, имеющих коммерческую составляющую, и нацелен на повышение эффективности реализации ИСП при одновременном улучшении качества среды жизнедеятельности. Для научных работников, аспирантов, а также руководителей строительных направлений, интересующихся вопросами управления недвижимостью и инвестиционно-строительными проектами.
Efecto del alojamiento de las gallinas (pastoreo, piso y jaula) sobre ácidos grasos, consumo, y percepción sensorial de sus huevos
Authors: Chavarría Zamora Sianny , Chacón Villalobos Alejandro , WingChing Jones Rodolfo
Published: March 2021

Introducción: A nivel mundial, crece la preocupación de los consumidores por el bienestar de los animales, incluidas las gallinas en el caso de los huevos. Objetivos: Evaluar el efecto de las condiciones de alojamiento de las gallinas sobre algunas características del huevo. Métodos: El estudio se realizó en Costa Rica. Hicimos un análisis estándar de perfil de ácidos grasos de 30 huevos, seleccionados al azar para cada uno de los sistemas de alojamiento. También encuestamos a 777 consumidores habituales de huevos sobre sus hábitos de compra y consumo y aplicamos una prueba sensorial a 108 panelistas. Resultados: Las proporciones de ácidos grasos poliinsaturados / ácidos grasos saturados fueron de 0,58, 0,55 y 0,51 para pastoreo, piso y jaula, respectivamente. En el panel sensorial, el 40% de los panelistas se agruparon por su mayor agrado general hacia la muestra, con preferencia por los huevos de gallinas de pastoreo. Poco más de la mitad (55%) de la población muestreada desconocía los sistemas de producción de huevos. Conclusión: La proporción de ácidos de estos huevos costarricenses los califica como “alimento saludable” y casi la mitad de la población encuestada desconoce los sistemas de producción de huevos.
Inteligencia artificial para la administración de los Reglamentos Aeronáuticos De Colombia (RAC)
Authors: Rodríguez-Palomino Paulino
Published: March 2021

Introducción: Lo que se pretende con el presente artículo, es evidenciar los resultados hallados en un proyecto de consultoría a la Aerocivil. Metodología: se realizó un estudio de caso de negocio para determinar si es posible encontrar una solución informática con Inteligencia Artificial que permita obtener respuestas en tiempo real sobre consultas que se tengan acerca de la aplicación a casos específicos de las normas contenidas en los Reglamentos Aeronáuticos de Colombia (RAC). Resultados: Es por esto que el proyecto realizó una consultoría organizacional a la Aerocivil en dónde se identificó de forma adecuada el problema técnico en el que está inmersa, se desarrolló por medio de un caso de negocio la posible solución al problema técnico y los aspectos administrativos asociados, que determinaron su viabilidad y mostraron las posibles aplicaciones en la gestión de diferentes organizaciones.
An unusual case of colonic mass
Authors: Vrakas Spyridon , Kourkoulis Panagiotis , Koutoufaris Georgios , Manoloudaki Kassiani , Xourgias Vasilis
Published: March 2021

We report a case of colonic metastasis due to pancreatic adenocarcinoma.
Soil nitrogen-hydrolyzing enzyme activity and stoichiometry following a subtropical land use change
Authors: Zhang Qian , Zhang Dandan , Wu Junjun , Li Jinsheng , Feng Jiao , Cheng Xiaoli
Published: March 2021

Afforestation; Soil ecoenzymatic C: N: P; Specific enzyme activities;
Soil C and N contents.
A rare case of plexiform schwannoma on the foot
Authors: Araghi Farnaz , tabary mohammadreza , Kamyab-Hesari Kambiz , Forouzanfar Mohammad‐Mehdi , Robati Reza Mahmoud
Published: March 2021

Plexiform schwannoma mainly presented as an asymptomatic nodule located
on the head, neck, or upper extremities. The presentation of this tumor
on the dorsum of the foot is very rare. Herein, we report a rare case of
pretty large plexiform schwannoma on the toe of a male patient.
The left outflow tract in foetal echocardiography screening: an audit of practices and quality criteria.
Authors: Quarello Edwin , REGOUIN Maud , MANCINI Julien , LAFOUGE Antoine , FONTAINE Nathalie , ROUSSIN Stéphanie , GUICHARD Jimmy , DUMONT Coralie
Published: March 2021

Background: The detection rate of congenital heart defects is barely
acceptable. Since 2016, the French National Conference on Obstetrical
and Foetal Ultrasound updated its recommendations by the inclusion of an
examination of the left ventricular outflow tract (LVOT) in the second
and third trimester of pregnancy. Objectives: This study aimed on the
one hand to evaluate the practices related to the realization of the
LVOT in the setting of fetal echocardiography in low-risk populations,
and on the other hand to study the possible modifications of the
practices secondary to the introduction of quality criteria. Study
Design: We conducted a multicentric, retrospective and prospective,
descriptive, longitudinal study divided into three distinct periods:
before 2016, in 2017, and in 2020. Seven quality criteria were
investigated and rated from 0 to 1 for LVOT screening. Files were
randomly selected from three centers, then average total and specific
scores were calculated. Results: LVOT images were present in ultrasound
reports in more than 93% of cases. Before 2016, the average quality
score was 5.49/7 (95% CI: 5.36-5.62), in 2017 5.91/7 (95% CI:
5.80-6.03), and in 2020 5.70/7 (95% CI: 5.58-5.82) for the three
centers. There was no significant difference following the introduction
of the quality criteria; 2017 vs. 2020, p = 0.054. Kappa coefficients of
the inter- and intra-operator variables were all within 0.601 and 1.
Conclusion: Left ventricular outflow tract images were present in most
of ultrasound reports. The introduction of the proposed quality criteria
is not associated with a significant change in practice.
Machine learning-based automated yeast cell counting under a complicated background with ilastik and ImageJ
Authors: Li Chenxi , Ma Xiaoyu , Deng Jing , Li Jiajia , Liu Yanjie , Zhu Xudong , Zhang Ping , Liu Jin
Published: March 2021

Measuring the concentration and viability of yeast cells is an important
and fundamental procedure in scientific research and industrial
fermentation. In consideration of the drawbacks of manual cell counting,
large quantities of yeast cells require methods that provide easy,
objective, and reproducible high-throughput calculations, especially for
samples in complicated backgrounds. To answer this challenge, we
explored and developed an easy-to-use yeast cell counting pipeline that
combined the machine learning-based ilastik tool with the freeware
ImageJ, as well as a conventional photomicroscope. Briefly, learning
from labels provided by the user, ilastik performs segmentation and
classification automatically in batch processing mode for large numbers
of images and thus discriminates yeast cells from complex backgrounds.
The files processed through ilastik can be recognized by ImageJ, which
can set up customizable parameters based on cell size, perimeter,
roundness and so on. In this work, we programmed an ImageJ macro,
“Yeast Counter”, to compute the numeric results of yeast cells for
automatic batch processing. Taking the yeast Cryptococccus
deneoformans as an example, we observed that the customizable software
algorithm for yeast counting with ilastik and ImageJ reduced
inter-operator errors significantly and achieved accurate and objective
results in the spotting test, while manual counting with a
haemocytometer exhibited some errors between repeats and required more
time. In summary, a convenient, rapid, reproducible and extremely
low-cost method to count yeast cells is described here that can be
applied to multiple kinds of yeasts in genetics, cell biology and
industrial fermentation.
The role of neutral and adaptive genomic variation in population diversification and speciation in two ground squirrel species of conservation concern
Authors: Barbosa Soraia , Andrews Kimberly , Goldberg Amanda , Gour Digpal , Hohenlohe Paul , Conway Courtney , Waits Lisette
Published: March 2021

Understanding the neutral (demographic) and adaptive processes leading
to the differentiation of species and populations is a critical
component of evolutionary and conservation biology. In this context,
recently diverged taxa represent a unique opportunity to study the
process of genetic differentiation. Northern and southern Idaho ground
squirrels (Urocitellus brunneus – NIDGS, and U. endemicus - SIDGS,
respectively) are a recently diverged pair of sister species that have
undergone dramatic declines in the last 50 years and are currently found
in metapopulations across restricted spatial areas with distinct
environmental pressures. Here we genotyped single-nucleotide
polymorphisms (SNPs) from buccal swabs with restriction site-associated
DNA sequencing (RADseq). With these data we evaluated neutral genetic
structure at both the inter- and intra-specific level, and identified
putatively adaptive SNPs using population structure outlier and
genotype-environment association (GEA) analyses. At the interspecific
level, we found a clear separation between NIDGS and SIDGS, and evidence
for adaptive differentiation relating to differences in hibernation. At
the intraspecific level, we identified 3 Evolutionarily Significant
Units for NIDGS and 2 for SIDGS plus multiple Management and Adaptive
Units. Elevation appears to be the main driver of adaptive
differentiation in NIDGS, while neutral variation patterns match and
extend that identified in previous studies using microsatellite markers.
For SIDGS, neutral substructure generally reflected the effect of
natural geographic barriers, while adaptive variation reflected
differences in land cover and temperature. These results clearly
highlight the roles of neutral and adaptive processes for understanding
species and population differentiation, which can have important
conservation implications in threatened species.
Prevalence and Impact of Takotsubo Syndrome in Hospitalizations for Acute Ischemic Stroke
Authors: Patel Upenkumar , Desai Rupak , Uddin MOHAMMED Faisal , Fong Hee Kong , Singh Sandeep , Patel Smit , Kumar Gautam , Sachdeva Rajesh
Published: March 2021

Background: Takotsubo Syndrome (TTS) is characterized by acute and
reversible left ventricular dysfunction with apical ballooning arising
during acute stress situations. Acute Ischemic Stroke (AIS) is one of
the known triggers to TTS, however, the impact of TTS on in-hospital
outcomes of AIS remains unexplored. Methods: We utilized data from the
National Inpatient Sample (2007-2014) and using ICD-9-CM diagnosis codes
to identify admissions for AIS with TTS and evaluated the temporal
trends, baseline characteristics, in-hospital complications, length of
stay (LOS) and all-cause mortality. Survey multivariable logistic
regression was used to compute adjusted Odds Ratios (OR and 95%
confidence intervals (CI). Results: An estimated 2,242 (0.4%) TTS cases
were identified among AIS hospitalizations (N=43,92,471). The frequency
of TTS was higher in elderly, whites and females (82.2%). After
adjustment for confounders, TTS incidence in AIS was associated with
higher odds of in-hospital complications including cardiogenic shock
(OR8.84, CI:4.07-19.17, p<0.001), cardiac arrest (OR3.17,
CI:1.57-6.42, p=0.001), and venous thromboembolism (OR1.68,
CI:1.14-2.47, p=0.008). Moreover, AIS hospitalizations with TTS showed
higher odds of developing respiratory failure (OR3.13, CI:2.42-4.05,
p<0.001) and required mechanical ventilation/intubation
(OR4.09, CI:3.14-5.32, p<0.001) more frequently compared to
non-TTS cohort. The AIS-TTS cohort had longer LOS (8.59 vs 5.22 days)
and the mortality was doubled (10.2% vs 5.1% p<0.001)
compared to those without TTS. Conclusion: The prevalence of TTS in AIS
remained ~20 times higher than the general inpatient
population and it predisposed AIS patients to worse inpatient outcomes.
Further studies are needed to evaluate the impact of TTS on long-term
outcomes in AIS.
An interpretation and modification of the SWT function
Authors: Kujawski Daniel
Published: March 2021

In this paper a new interpretation and modification of the SWT function
in terms of the total damaging energy density is proposed and discussed.
The total damaging energy density is the sum of the damaging part of the
strain energy density and complementary energy density corresponding to
the first quadrant in damaging σ-ε
axes. For cyclic loading with positive mean stress
(σ≥0) the proposed function reduces to the original SWT
formulation. For cyclic loading with negative mean stress
(σ<0) the maximum stress is augmented by 1/3
of absolute value of the mean stress. The proposed approach shows a
consistent correlation of the mean stress effects for both positive and
negative mean stresses.
Ferrowax microvalve-utilized centrifugal microfluidic system for a fully automated serial dilution
Authors: Kim Soohyun , Song Jayeon , Kim RaKyeom , Lee Nae Yoon , Kim Min Hwan , Park Hyun Gyu
Published: March 2021

We herein describe an ingenious centrifugal microfluidic system to
accomplish a fully automated serial dilution. The liquid flow on the
disc was automatically regulated by utilizing ferrowax microvalves
systematically integrated into the channels within the specially
designed metering structure. By opening the differently positioned
microvalves through irradiation of IR laser to allow metering, the same
amount of diluent was serially eluted to the dilution chamber from the
same diluent chamber. After dilution, the diluted samples were
automatically delivered to the respective final product chambers by
appropriately opening or closing the microvalves in the connecting
channels, followed by rotating the disc. Based on this unique design
principle, six consecutive two-fold and ten-fold dilutions were
successfully achieved, yielding excellent accuracy in a wide dynamic
range up to six orders of magnitude. Very importantly, the overall
serial dilution process, including the diluent addition, mixing, and
product transfer steps, was completed very rapidly within five minutes,
due to the minimized procedures enabled by the automated actuation of
the ferrowax microvalves at the rationally designed positions. The
centrifugal microfluidic system would serve as a powerful elemental tool
to realize the fully automated diagnostic microsystem involving the
serial dilution process.
Drying mechanism of monodisperse colloidal film: Evolution of normal stress and its correlation with microstructure
Authors: JEONG JAE HWAN , Lee Young Ki , Ahn Kyung
Published: March 2021

We investigate the drying process of monodisperse colloidal film over a
wide range of Péclet number (Pe) by using the Brownian dynamics
simulation. We analyze the detailed process in three aspects;
accumulation front, normal stress, and microstructure. The evolution of
particle distribution is quantified by tracking the accumulation front.
The accumulated particles contribute to the continuous increase of the
normal stress at the interface. At the substrate, the normal stress
first stays constant and then increases as the accumulation front
touches the substrate. We quantitatively analyze the stress development
by a scaled normal stress difference between the two boundaries. At all
tested Pe, the stress difference increases to the maximum, followed by a
decrease during drying. Interestingly, a mismatch is observed between
the stress difference maximum and the initial stress increase at the
substrate. The microstructural analysis reveals that this mismatch is
related to the microstructural development at the substrate.
Irrigation of Maxillary Sinus through Middle Meatus versus Inferior Meatus: A Randomized Controlled Trial
Authors: Abdul Matin Mohammad
Published: March 2021

Objective: To stimulate interest in irrigation of maxillary sinus through middle meatus and to compare this new technique of irrigation with antral wash through the inferoir meatus regarding it’s efficacy and complications. Methods: A total of 40 patients of chronic maxillary sinusitis or unresolved acute maxillary sinusitis were selected, 20 for middle meatus and 20 for inferior meatus irrigation, patients were randomly selected, middle meatal puncture was done by Karl Storz antrum sucker nozzle using 0 degree telescope and inferior meatus by Litzwiz antrum trocher and cannula. Any difficulties or complications were noted Results: The age of the patients ranged from 12-55 years, with mean age 34.9 years in middle meatal group and 38.7 years in inferior meatal group. There were 25 male and 15 female patients with male female ratio 1.67:1. No difficulties or any comlications were noted in middle meatus group whereas mispuncture, failure of puncture, haemorrhage and check swelling were noted in some patients of inferior meatus group. Conclusion: It is concluded that this new technique of puncturing the middle meatus is a safe, easy and effective procedure of irrigation of the maxillary sinus instead of antral wash out via the inferior meatus for the treatment of chronic maxillary sinusitis
Myiasis of Middle Ear and Eustachian Tube in a Neglected Child: Case Report
Authors: Mohammed Tareq
Published: March 2021

Aural myiasis is the infestation of the ear by larvae of flies. Commonly occurs in infected foul smelling wounds. Though common in animals, humans can become infected by close contact with animals or by directly by the female flies. Among the risk factors poor personal hygiene, poor socio-economic status, unconsciousness patients, neglected children’s are common. Possible earliest removal is must. Aural miyasis is rare, only few cases have been reported so far. Here we present a 10 year child who is a diagnosed case of cerebral palsy presented with per aural bleeding. Endoscopic removal was done under general anesthesia in a secondary care hospital.
PENGEMBANGAN PERMAINAN MAKE A MATCH BERBASIS KOMPUTER SEBAGAI MEDIA PENGAYAAN
Authors: Pratama Rendy Putra , Rochmawati Rochmawati
Published: March 2021

Learning media is believed to be one of the important parts of the learning process, especially computer-based media. This study aims to develop a computer game-based media Make a Match and to analyze its feasibility as a media enrichment. This study provided a type of educational Research and Development (RD) by referring to the model of development ADDIE (Analysis, Design, Development, Implementation, and Evaluation). The result of validations by material experts, linguists, and media experts showed thatthe average worthiness of assessment was 86,27%. The average percentage revealed the number of 90,1% in the material aspect, 81,4% in the linguistics aspect, and 86,7% in the media aspect. Therefore, this computer based-game is very decent to be used as amedia enrichment for students.
UJI EFEKTIVITAS EKSTRAK DAUN CENGKEH (Syzygium aromaticum) SEBAGAI BAHAN DASAR OBAT NYAMUK ELEKTRIK CAIR TERHADAP NYAMUK Aedes aegypti
Authors: Handito Sasono , Setyaningrum Endah , Handayani Tundjung Tripeni
Published: March 2021

Aedes aegypti merupakan vektor penyakit Demam Berdarah Dengue (DBD) yang masih menjadi masalah kesehatan di Indonesia. Upaya pengendalian dan pemberantasan Ae. aegypti saat ini banyak dilakukan, salah satunya dengan menggunakan insektisida kimiawi. Penggunaan insektisida kimiawi secara berkelanjutan menimbulkan resistensi pada nyamuk vektor. Telah diketahui bahwa daun tanaman cengkeh (Syzygium aromaticum L) mengandung flavonoid dan saponin yang berpotensi sebagai insektisida. Untuk membuktikan hal tersebut dilakukan penelitian yang bertujuan untuk mengetahui efektifitas dari ekstrak daun cengkeh dengan menuntukan nilai Lethal Concentration (LC50 dan LC90) dan Lethal Time (LT50dan LT90). Penelitian eksperimen yang menggunakan rancangan acak kelompok ini dilakukan dengan lima konsentrasi, yaitu; 10%; 20%; 30%; 40%; dan 50% ekstrak daun cengkeh, dan dengan dua kontrol yaitu, kontrol negatif yang berisi aquades, kontrol positif yang berisi tranflutrin12,38g/l, dengan empat kali pengulangan setiap konsentrasi dan kontrol. Pengamatan terhadap jumlah nyamuk yang mati setiap 5, 10, 20, 40, 60, 120, 240, 480, dan 1440 menit setelah perlakuan. Dari hasil Uji ANOVA yang diuji lanjut dengan Uji BNT diketahui bahwa konsentrasi yang paling efektif dibandingkan kontrol negatif dan sama dengan kontrol positif adalah 50%. Dari analisis probit diperoleh nilai LC50 sebesar 43,709%, sedangkan untuk nilai LC90 sebesar 49,069%. Nilai LT50 dan LT90 dari penelitian ini adalah 1220,152 menit dan 1126,488 menit. Kesimpulan dari penelitian ini adalah ekstrak daun cengkeh berpotensi sebagai insektisida terhadap Ae. aegypti, dan konsentrasi ekstrak yang paling efektif adalah konsentrasi sebesar 50%.
PENINGKATAN PERTUMBUHAN Daphnia sp. MENGGUNAKAN MEDIA KOTORAN AYAM YANG DICAMPUR DEDAK PADI DENGAN KONSENTRASI BERBEDA
Authors: Yunda Putri Dara , Murwani Sri , Widiastuti Endang Linirin
Published: March 2021

Penelitian ini bertujuan untuk mengetahui peningkatan populasi dan laju pertumbuhan populasi spesifik Daphnia sp. pada media kotoran ayam yang dicampur dedak padi dengan konsentrasi berbeda.  Penelitian ini dilaksanakan di Laboratorium Biologi Molekuler II Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Lampung pada Bulan Desember 2014.  Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) terdiri dari 5 perlakuan yaitu P1 (kotoran ayam 100%), P2 (dedak padi 100%), P3 (kotoran ayam 75% + dedak padi 25%), P4 (kotoran ayam 50% + dedak padi 50%), dan P5 (kotoran ayam 25% + dedak padi 75%) dengan pengulangan sebanyak 4 kali pada masing-masing perlakuan.  Parameter yang diamati adalah kepadatan populasi, laju pertumbuhan populasi spesifik, dan kualitas air.  Data dianalisis dengan analisis sidik ragam (ANOVA) dan dilanjutkan dengan uji Beda Nyata Terkecil (BNT) pada taraf 5%.  Hasil penelitian menunjukkan bahwa kepadatan tertinggi populasi Daphnia sp. adalah pada media campuran kotoran ayam 75% + dedak padi 25% yaitu dengan jumlah 970 ind/L, sedangkan kepadatan populasi terendah yaitu pada media menggunakan dedak padi 100%  sebesar 730 ind/L.  Media kultur terbaik adalah campuran kotoran ayam75% + dedak padi 25% dengan laju pertumbuhan populasi spesifik tertinggi Daphnia sp. yaitu sebesar 43,11%/hari.
KEANEKARAGAMAN PHYTOTHELMATA DI KAWASAN PEMUKIMAN DAN PERKEBUNAN DESA TAMAN SARI, GEDONG TATAAN, PESAWARAN
Authors: Ningsih Welmi Nopia , Rosa Emantis , Master Jani
Published: March 2021

Nyamuk merupakan vektor dari beberapa jenis penyakit yang merugikan manusia.  Jumlah populasi nyamuk dapat dipengaruhi oleh tempat perindukan.  Tempat perindukan nyamuk sangat beragam, salah satunya phytothelmata yang termasuk ke dalam tempat perindukan alami nyamuk.  Phytothelmata merupakan tumbuhan penampung genangan air sehingga dapat digunakan sebagai tempat perindukan serangga termasuk nyamuk.  Tujuan penelitian ini adalah mengetahui keanekaragaman phytothelmata di lokasi beberapa pemukinan dan perkebunan sekitar kawasan Desa Taman Sari, Gedong Tataan, Pesawaran yang dilaksanakan dari Januari-Maret 2016.  Proses identifikasi nyamuk dilakukan di Laboratorium Botani, Jurusan Biologi, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Lampung.  Analisis data menggunakan Indeks Keanekaragaman Shanon-Wiener dan Indeks Dominansi Simpons.  Jenis phytothelmata yang ditemukan di area pemukiman sebanyak delapan jenis dan di perkebunan sebanyak tujuh jenis.  Hasil penelitian menunjukkan keanekaragaman phytothelmata di area pemukiman dan perkebunan dalam kategori sedang (1,835 dan 1,613) dan kategori rendah untuk indeks dominansi (0,182 dan 0,262).
LAJU PERTUMBUHAN Oithona sp. YANG DIBERI PAKAN ALAMI Nannochloropsis sp., Isochrysis sp., DAN KOMBINASINYA
Authors: Munandar Agung , Murwani Sri , Agustrina Rochmah
Published: March 2021

Peningkatan produksi perikanan adalah dengan memperhatikan kualitas pakan ikan pada fase larva.  Salah satu jenis pakan alami yang dipergunakan antara lain Oithona sp. karena memiliki kandungan nutrisi yang baik untuk pertumbuhan ikan.  Untuk meningkatkan produktivitas Oithona dibutuhkan pakan yang berkualitas seperti mikroalga.  Mikroalga yang banyak digunakan sebagai pakan alami zooplankton diantaranya Nannochloropsis sp. dan Isochrysis sp. karena kandungan nutrisinya yang tinggi.  Tujuan penelitian ini adalah untuk mengetahui laju pertumbuhan Oithona sp. yang diberi pakan alami Nannochloropsis sp. (N), Isochrysis sp. (Is) dan kombinasinya.  Penelitian ini dilakukan pada bulan Maret 2016 – April 2016 di Laboratorium Akuatik, Jurusan Biologi, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Lampung.    Rancangan percobaan yang digunakan adalah Rancangan Acak Lengkap (RAL) dengan 5 perlakuan (N 100% ; N 75% dan Is 25% ; N 50% dan Is 50% ; N 25% dan Is 75% : Is 100%), dan diulang 4 kali.  Data dianalisis ragam (ANOVA) dan diuji lanjut dengan uji beda nyata terkecil (BNT) pada taraf 5%. Hasil penelitian menunjukkan bahwa pemberian pakan alami Nannochloropsis sp. 75% dan Isochrysis sp. 25% memberikan hasil kepadatan puncak populasi Oithona sp yang paling tinggi yaitu 215 ind/L dan laju pertumbuhan tertinggi 5,08%/hari.
PREVALENSI PROTOZOA USUS PADA KUKANG SUMATERA (Nycticebus coucang) MELALUI PENGGUNAAN BERBAGAI MACAM MEDIA PENGAWET DAN KONSENTRASI BERBEDA DI PUSAT REHABILITASI YIARI CIAPUS, BOGOR
Authors: Rukmana Nora , Rosa Emantis , Prameswari Wendi
Published: March 2021

Penelitian ini bertujuan untuk mengetahui jenis protozoa, jumlah ookista dan prevalensi kukang sumatera (Nycticebus coucang) yang terinfeksi protozoa usus  dengan menggunakan berbagai macam media pengawet dan konsentrasi berbeda. Penelitian ini dilakukan pada lima ekor kukang sumatera.  Pengambilan sampel dilakukan pada malam hari dan diawetkan pada berbagai macam media kontrol (tanpa larutan), alkohol 70%, alkohol 80%, formalin 5%, dan formalin 10%.  Penelitian ini menggunakan dua metode yaitu metode pemeriksaan natif dan metode apung.  Pemeriksaan sampel dilakukan di Laboratorium Diagnostik, YIARI dan Laboratorium Biologi, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Lampung.  Hasil pemeriksaan dengan metode natif diperoleh dua kelompok protozoa yaitu protozoa parasitik dan protozoa non parasitik.  Protozoa parasitik diperoleh tiga famili yaitu Eimeriidae, Endamobidae, dan Balantiidae dengan empat jenis yaitu Isospora sp., Cryptosporidium parvum, Entamoeba coli, dan Balantidium coli.  Sedangkan hasil identifikasi Protozoa non parasitik hanya ditemukan famili Oxytrichidae dengan satu jenis yaitu Oxytricha granulifera.  Hasil perhitungan dengan metode apung diperoleh ookista Eimeria sp. dengan jumlah 200 sel/gram.  Prevalensi protozoa usus melalui penggunaan berbagai macam media dan konsentrasi berbeda pada  kukang sumatera yaitu 2% pada kontrol, 9,2% pada alkohol 70%, 13% pada alkohol 80%, 5,8% pada formalin 5%, dan 5,4% pada formalin 10%.  Media alkohol 80% menjadi rekomendasi paling bagus sebagai media pengawet protozoa usus dibandingkan dengan alkohol 70%, formalin 5%, dan formalin 10%.
PENGARUH EKSTRAK AIR DAUN BABANDOTAN (Ageratum conyzoides) TERHADAP PERTUMBUHAN TANAMAN CABAI MERAH (Capsicum annuum L.)
Authors: Harnani Maria Reni , Lande Martha Lulus , Zulkifli Zulkifli
Published: March 2021

Babandotan (Ageratum conyzoides) mengandung senyawa alelopati yang mampu menghambat pertumbuhan tanaman. Tujuan penelitian ini untuk mengetahui apakah ekstrak air daun Ageratum conyzoides mempengaruhi pertumbuhan tanaman cabai merah (Capsicum annuum L.) Penelitian ini dilaksanakan bulan Juni sampai Juli 2016 di Laboratorium Fisiologi Tumbuhan, Jurusan Biologi, Universitas Lampung. Variabel dalam penelitian ini adalah  tinggi, berat segar, berat kering, kadar air relatif, dan kandungan klorofil total tanaman cabai merah, sedangkan sebagai parameter adalah nilai tengah semua variabel. Penelitian dilakukan dalam rancangan acak lengkap dengan faktor utama adalah ekstrak air daun babandotan dengan 5 taraf konsentrasi yaitu 0% v/v (kontrol),  25% v/v, 50% v/v,  75% v/v, 100% v/v. Analisis ragam dan uji BNT dilakukan pada taraf  nyata 5 %. Hasil penelitian menunjukan bahwa ekstrak air daun babandotan menurunkan secara nyata tinggi tanaman (y= -0.022x + 10.12  R2=0.706), berat segar tanaman (y= -0.184x + 34.49  R2=0.932), berat kering tanaman (y= -0.14x + 21.09  R2=0.819), namun meningkatkan kadar air relatif (y= -0.136x + 39.26  R2=0.410). Tidak ada efek ekstrak air daun babandotan terhadap kandungan klorofil total. Dari hasil penelitian disimpulkan bahwa ekstrak air daun babandotan bersifat alelopati terhadap tanaman cabai merah yaitu menghambat pertumbuhan tanaman cabai merah.
JENIS DAN TIPE PHYTOTELMATA DI PEMUKIMAN DAN PERKEBUNAN LINGKUNGAN SUKAHARUM KELURAHAN BATU PUTUK TELUK BETUNG BARAT, BANDAR LAMPUNG
Authors: Simangunsong Santi Naumi , Rosa Emantis , Suratman Suratman
Published: March 2021

Phytotelmata merupakan golongan tumbuhan yang dapat menampung air pada bagian tubuhnya. Genangan air yang terdapat pada phytotelmata digunakan oleh berbagai jenis organisme sebagai habitat alami. Tujuan dari penelitian ini yaitu mengetahui jenis phytotelmata di Sukaharum Kelurahan Batu Putuk Kecamatan Teluk Betung Barat, Bandar Lampung. Penelitian dilaksanakan pada bulan April-Juni 2016 di pemukiman dan perkebunan. Identifikasi phytotelmata dilakukan secara langsung di lokasi pengamatan. Bagi phytotelmata yang tidak diketahui jenisnya dilakukan identifikasi di Laboratorium Botani Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Lampung. Hasil penelitian di area pemukiman ditemukan 14 jenis phytotelmata yang tergolong dalam tujuh tipe phytotelmata. Jenis phytotelmata yang paling banyak ditemukan adalah Musa paradisiaca sebanyak 29 individu dengan tipe yang paling banyak ditemukan yaitu bagian tumbuhan yang gugur. Di area perkebunan ditemukan delapan jenis phytotelamata yang tergolong dalam enam tipe phytotelmata. Jenis phytotelmata yang paling banyak ditemukan adalah Theobroma cacao sebanyak 32 individu dengan tipe yang paling banyak ditemukan tipe lubang buah dari tumbuhan Theobroma cacao. Jenis phytotelmata yang ditemukan pada area pemukiman lebih banyak dibandingkan phytotelmata yang ditemukan di area perkebunan.
UJI ANTIDIARE EKSTRAK RIMPANG RUMPUT TEKI (Cyperus rotundus L.) DIBANDINGKAN DENGAN OBAT ATTAPULGITE PADA MENCIT (Mus musculus L.) JANTAN YANG DIINDUKSI Oleum ricini
Authors: Oktaviani Linda , Busman Hendri , Nurcahyani Nuning
Published: March 2021

Diare merupakan suatu gejala klinis dan gangguan saluran pencernaan yang ditandai dengan bertambahnya frekuensi defekasi, disertai dengan perubahan konsistensi feses menjadi lebih cair/lembek. Rumput teki merupakan herbal menahun yang tumbuh liar dan kurang mendapat perhatian, padahal bagian tanaman ini terutama umbinya dapat digunakan sebagai obat. Penelitian ini bertujuan untuk membandingkan pengaruh ekstrak rimpang rumput teki dengan obat attapulgite terhadap antidiare pada mencit (Mus musculus L.) jantan yang diinduksi Olium ricini. Penelitian ini dilaksanakan di Laboratorium Zoologi Jurusan Biologi FMIPA Universitas Lampung pada bulan April-Mei 2016. Penelitian ini dilakukan dengan 5 perlakuan : (K) kontrol diberi 0,4 ml /40 gr BB aquabides (K1) dosis obat attapulgite dengan dosis 0,4 mg /40gr BB, (K2) dosis ekstrak rumput teki 4,5 mg/ 40 gr BB, (K3) dosis ekstrak rumput teki 45 mg/40 gr BB, (K4) dosis ekstrak rumput teki 135 mg/40 gr BB, dengan pengulangan sebanyak 5 kali dan pemberian Oleum ricini dengan dosis 150 mg/kgBB untuk setiap perlakuan. Parameter yang diamati dalam penelitian ini meliputi : waktu terjadinya diare, frekuensi diare, konsistensi feses pada mencit (Mus musculus L.) jantan. Penelitian ini dilakukan dengan menggunakan Rancangan Acak Lengkap. Hasil penelitian menunjukkan bahwa ekstrak rimpang rumput teki dosis 135mg/40gram BB dan obat attapulgit dosis 0,4 mg/40gr BB dapat memperpanjang waktu terjadinya diare, dapat menurunkan frekuensi diare, dan dapat memperbaiki konsistensi feses mencit secara segnifikan apabila dibandingkan dengan kontrol. Hal ini disebabkan karena didalam ekstrak rimpang rumput teki mengandung senyawa flavonoid dan alkaloid sebagai antidiare.
KEMAMPUAN BERBAGAI TINGKATAN STADIUM LARVA KUMBANG Tenebrio molitor L. (COLEOPTERA : TENEBRIONIDAE) DALAM MENGKONSUMSI STYROFOAM (POLYSTYRENE)
Authors: Manullang Deasy Vidya Carolina , Nukmal Nismah , Umar Suratman
Published: March 2021

Kumbang Tenebrio molitor atau yang lebih dikenal sebagai ulat hongkong, memiliki nilai ekonomis karena dapat digunakan sebagai pakan ternak maupun obat bagi manusia dan mudah dibudidayakan. Ulat hongkong belum dimanfaatkan secara maksimal, sementara ulat hongkong secara alami memiliki manfaat yang besar sebagai pengurai senyawa organik dan anorganik di alam, dari penelitian terakhir diketahui dapat mengurai styrofoam. Penelitian ini dilaksanakan pada Juli-Agustus 2016 di Laboratorium Zoologi Jurusan Biologi Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Lampung dengan tujuan untuk mengetahui kemampuan berbagai tingkatan stadium larva ulat hongkong dalam mengkonsumsi styrofoam. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL), dengan 10 instar larva ulat hongkong sebagai perlakuan dan 3 kali pengulangan. Data yang diperoleh dianalisis menggunakan Analisis Ragam (ANARA) dan dilanjutkan uji BNT (Beda Nyata Terkecil) pada taraf beda nyata 5% serta dilakukan analisis korelasi antara jumlah styrofoam yang dimakan dengan berat serta panjang ulat hongkong. Hasil analisis ragam menunjukkan bahwa pakan styrofoam mempengaruhi berat dan panjang ulat hongkong, serta lama stadium ulat hongkong (p < 0,05). Hasil analisis korelasi antara berat ulat hongkong dan jumlah pakan yang dimakan menunjukan adanya hubungan positif yang sangat kuat (r = 0,96), dan pada korelasi antara panjang ulat hongkong dan jumlah pakan yang dimakan menunjukkan adanya hubungan postif yang kuat (r = 0,66).
ANALISIS VEGETASI DI BLOK INTI HUTAN LINDUNG REGISTER 21 KESATUAN PENGELOLAAN HUTAN XI KABUPATEN PESAWARAN
Authors: Rendra Tedy , Duryat Duryat , Bintoro Afif
Published: March 2021

Sumber daya hutan harus terjaga kelestariannya salah satunya adalah hutan lindung. Hutan lindung mempunyai fungsi mengatur tata air. Vegetasi tanaman pada hutan lindung sangat penting untuk mempertahankan fungsinya. Penelitian ini bertujuan mengetahui komposisi vegetasi blok inti hutan lindung. Penelitian dilakukan pada blok inti hutan lindung register 21 Kesatuan Pengelolaan Hutan (KPH) XI Pesawaran pada bulan Agustus – Oktober 2017. Pengambilan sampel dilakukan menggunakan metode continuous sampling with random start dengan jumlah plot sebanyak 45 buah. Analisis dilakukan menggunakan Indeks Nilai Penting (INP). Hasil analisis menunjukkan terdapat 40 jenis tanaman yang terdiri atas 21 famili, didominasi oleh Theobroma cacao dengan INP sebesar 130%.
PERTUMBUHAN PLANLET KRISAN (Dendranthema grandiflora Tzvelev) KULTIVAR PINK FIJI SETELAH PENAMBAHAN EKSTRAK TAUGE (Vigna radiata L.) PADA MEDIUM MURASHIGE DANSKOOG (MS) SECARA IN VITRO.
Authors: Impitasari Nalindri , Nurcahyani Endang , Handayani Tundjung Tripeni , Yulianty Yulianty
Published: March 2021

Chrysanthemum (Dendranthema grandiflora Tzvelev) is one of the important ornamental plants in Indonesia and has high economic value . This plant is known as a producer of flowers with attractive shapes and colors . Seeing the magnitude of community interest and the potential utilization of chrysanthemum , causing this plant more and more developed and cultivated . This study aims to determine the concentration of optimum mungbean sprouts extract on the growth of chrysanthemum explants in vita . The addition of mungbean sprouts extracts (Vigna radiata L .) from concentration of 0% v/v , 2% v/v , 4% v/v , 6% v/v and 8% v/v on Murashige and Skoog(MS ) medium to growth eksplan Chrysanthemum (Dendranthema grandiflora Tzvelev ) Pink Fiji cultivars have been carried out in the tissue culture laboratory of Faculty of Mathematics and Natural Sciences , University of Lampung from November to December 2017 . This study used Completely Randomized Design (RAL ) 1 factor with 5 replications . Analysis of BNT variety and test is done at 5% level . The results showed that the extract from mungbean sprouts (Vigna radiata L . ) had no effect on plantlet height , number of shoot and number of chrysanthemum (Dendranthema grandiflora Tzvelev) plantlet leaves. The addition of mungbean spourts extracts on Murashige and skoog (MS) medium show 100% live plantlet.
PENGARUH ASAM GIBERELAT (GA3) DAN KALIUM NITRAT (KNO3) SERTA INTERAKSINYA TERHADAP SENESCENCE BUNGA POTONG GERBERA PUTIH (Gerbera jamesonii).
Authors: Agustin Maulidina , Lande Martha Lulus , Zulkifli Zulkifli , Handayani Tundjung Tripeni
Published: March 2021

The purpose of this study was to decide whether the mixture of KNO3 and GA3 solutions was more effective than a single solution of KNO3 or GA3 in maintaining the freshness of cut flowers. The study was conducted at the Botanical Laboratory of the Department of Biology, Faculty of Mathematics and Natural Sciences, University of Lampung from November - December 2017. The research was carried out in a 2 x 3 factorial experiment with reason A was the GA3 solution with 3 concentration levels: 0%, 0.5%, and 1%. Factor B is KNO3 solution with 2 concentration levels: 0% and 5%. The limits in this study were fresh weight, dry weight, relative water content, and total dissolved carbohydrate content of gerbera cut flowers, qualitative limits were the level of reducing sugars. Measurements were made 7 days after soaking cut flowers in KNO3 or GA3 solutions, and a mixture of both. Homogeneity of variance and analysis of variance were determined at a significant level of 5%. Simple effect of KNO3 at each concentration level of GA3 decide by F test at 5% significance level. The results showed that GA3 with a concentration of 0.25% and 0.5% increased the fresh weight and dry weight of Gerbera cut flowers. KNO3 0.5% much reduced the relative water content of Gerbera cut flowers. The interaction between GA3 and KNO3 does not much effect all freshness of cut flowers. From the results of the study concluded that the single treatment of GA3 was more effective than the combination treatment of GA3 and KNO3 in maintaining the freshness of Gerbera cut flowers.
Maya Index Analysis of Dengue Fever Vector in East Metro Sub-District Lampung Province Indonesia
Authors: Sona Betara , Rosa Emantis , Kanedi M. , Tugiyono Tugiyono
Published: March 2021

Dengue fever was one of the dangerous diseases due to it might cause death in a short time. It transmitted through its vectors, namely, Aedes aegypti and Aedes albopictus. Maya index is an indicator that used to identify a high-risk area or not as a breeding ground for Aedes sp. The purpose of this study was to determine the type of landfill which has the potential as a breeding ground for mosquitoes, to find out the larvae found in various landfill sites, and to know the Maya index status in Metro Timur Subdistrict which was carried out in November-December 2017. This research conducted by a direct survey of 100 residents' houses in East Metro. The results indicated that the type of controlled water reservoir that had the most potential as a breeding place for mosquitoes was a bathtub, while the type of water reservoir that was not controlled which had the potential as a place for mosquito breeding was a fish pond usage. There were 2 types of larvae found, namely, Aedes aegypti larvae with a percentage of 47.7% and Aedes albopictus larvae with a percentage of 52.3%. The Maya index status detected there, was a medium category, which obtained from the BRI combination and HRI category. Besides, it did not mean that the area has been free from dengue cases. The role of the community is still very much needed in eradicating landfills which has the potential as a breeding place for dengue mosquitoes vector.
Spinal Structure of Mice Fetus (Mus musculus L.) Treated by Acanthus ilicifolius L. Leaves Extract
Authors: Roy Tunggul Van , Nurcahyani Nuning , Sutyarso Sutyarso , Busman Hendri
Published: March 2021

Jeruju had various chemical components. This study was conducted on the teratogenic test of jeruju leaf extract to determine abnormalities in fetal mice (Mus musculus L.). This study used a completely randomized design (CRD) method with 20 pregnant female mice divided into 4 groups: 1 group as a control and 3 groups treated with a dose of 3.75 mg/30grBB, 7.5 mg/30grBB, 15 mg/grBB, each with jeruju leaf extract consists of 5 repetitions. The results showed that the doses of 7.5 mg/30grBB and 15 mg/grBB significantly decreased fetal weight and length when compared with controls. This is suspected because there is an active substance in the jeruju leaf extract which is cytotoxic. Anatomically the administration of jeruju leaf extract does not cause abnormalities in the structure of the fetal spine of mice. This is due to the growing fetus taking priority from the many types of nutrients in the mother fluid so that the fetal bone can continue to grow and develop.
Coral Reef Fish and Plankton Diversity toward Coral Reef Coverage in Panjang Island of Anak Krakatoa Mountain
Authors: Puspitasari Gita , Widiastuti Endang Linirin , Wijayanti Henni , Tugiyono Tugiyono
Published: March 2021

The coral reef is part of the marine ecosystem that important because of its role as a source of life, especially for marine variety creatures. This study aims to determine the relationship of the diversity of reef fish and plankton to coral reef cover on the Panjang Island of Anak Krakatoa Mount, Lampung. Line Intercept Transect used for retrieval of coral reef data and the Underwater Visual Census method for collecting coral reef fish data. Diversity and dominance index are utilized to analyze correlations between them. A good coral reef is obtained at point 2 (5 meters in depth) while at other points the condition of the coral reef is classified as moderate. The highest number of fish is found at point 1 (5 meters in depth) with 56 individuals. The highest plankton diversity is 3.04 Index whereas located at point 2 (0 meters in depth). They have a positive correlation (0.955-coral reef coverage with fishes, 0.916-diversity of reef fish and coral reefs, 0.833-diversity of reef fish with plankton) upon their relationship.
Nepenthes mirabilis (Lour.) Druce Planlet at a Various Levels of Murashige & Skoog Medium Density In Vitro
Authors: Arfa Nadia Fakhriyati , Nurcahyani Endang , Zulkifli Zulkifli , Handayani Tundjung Tripeni
Published: March 2021

This study aims to determine the variation of the stomata index of the Kantong Semar (Nepenthes mirabilis) planlet at a various medium density of the Murashige and Skoog. This study used a Completely Randomized Design using one factor (medium density of the Murashige and Skoog). We used 5 levels of medium density, i.e.: 1/16 MS, 1/8 MS, 1/4 MS, 1/2 MS, and MS. Homogeneity test used Levene’s test of 5% significance level, then analysis of variance is carried out at 5% significance level and followed by Tukey test at 5% significance level. The results showed that the lower the level of Murashige and Skoog medium density on the Nepenthes mirabilis plantlet, the stomata index also increased.
Co-Culture Anoxygenic Photosynthetic Bacteria With Bacillus sp. Isolated From Hanura Beach Against Vibrio sp.
Authors: Sumardi Sumardi , Farisi Salman , Ekowati Christina Nugroho , Oktalia Sundari Ayu
Published: March 2021

A mangrove forest ecosystem is a place where many special Bacillus sp. found. This study aims to obtain Bacillus sp. isolates that can inhibit the growth of Vibrio sp. This study was conducted by selecting 77 Bacillus sp. isolates from the Hanura mangrove forest area. In addition, selected bacteria were tested for salt stress, pH stress, pathogenicity test, and antibiotic susceptibility test. Selected isolates were cultivated together with Vibrio sp. for 7 days. Bacillus sp. and Vibrio sp. cultured again with the addition of anoxygenic photosynthetic bacteria for 4 days. From the results of the initial selection, 4 isolates could inhibit the growth of Vibrio sp. The final results showed that Bacillus IL2K8 isolates were known to inhibit the growth of Vibrio sp., can grow at salinity 0%, 3%, 6% and pH 7 and pH 10. IL2K8 isolates are not pathogenic, resistant to amplicin antibiotics, streptomycin, nalidixic acid, and chloramphenicol but sensitive to trimethoprim antibiotics. In the joint culture of liquid media IL2K8 together with Anoxygenic Photosynthetic Bacteria (APB) isolates IL2K8 can inhibit the growth of Vibrio sp.
Genetic Relationship of Banana at Bandarlampung City Based on The Number of Chromosome and Genom Type
Authors: Ernawiati Eti , Lande Martha L.
Published: March 2021

A banana was rank 4th as food consumed by the world community after rice, wheat, and corn. Identification and characterization were important steps to explore the potential and important value of this plant. This study aims to obtain the kinship profile of banana germplasm in Bandarlampung City based on the number of chromosomes and their genome types. Characterization of banana accession is done by observing the morphological characteristics referring to 15 characters from Simmonds and Shepherd with the expected score of genomic determinants modified by Silayoi and Camchalow. The results of dendrogram analysis showed that on a scale of 20-23 obtained 2 groups of banana accessions. The first group consisted of 7 accessions of bananas, namely Kepok Kapas, Kepok Manado, Kepok Kuning, Rabig, Kepok Batu, Raja Sajen, and Pisang Batu. The second group consisted of 15 accessions, namely Kepok Abu, Horn, Thousand, Janten, Mas Kuning, Mas, Muli, Rejang, Ambon Lumut, Papan, Cavendish, Ambon Kuning, Morosebo, Rajah Sereh, and Raja Nangka. Whereas 4 accessions, namely Ambon Australia, Kepok Lebanon, Kidang and Raja Bakar, could not be analyzed for their kinship because the data collection of the banana generative phase had passed or had not yet entered the generative phase. Whereas 1 accession, namely Musa ornate, is believed to be included in the Rhodhoclamys section so that the genome type cannot be determined. Based on group analysis obtained 2 large groups at a scale distance of 20-23. At a smaller scale distance of 10 obtained a subgroup with a large number of members.