bluuebunny/crossref_metadata_2025 huggingface dataset:
FINANCIAL LITERACY AND RISK PROFILE: AN EXTENSIVE OBSERVATION ON BANK EMPLOYEES
Authors:   School of Business and Management, Institut Teknologi Bandung, Maya Damayanti Sylviana , Wicaksana Pramudya ,   School of Business and Management, Institut Teknologi Bandung
Published: March 2021

People with a high level of financial literacy tend to have better financial management skills to realize their financial well-being through effective financial decisions including investing according to their risk profile. The banking industry is an industry that has the highest inclusive level selected because it can represent financial literacy conditions. On the other hand, the gap between financial inclusion and financial literacy leads to a large number of investment (illegal) cases and complaints to regulators. The purpose of this research is to find out the level of financial literacy and type of risk profile, factors that affect it with bank employees in Bandung as research objects. The sampling technique used is a non-probability sampling technique that is purposive sampling with a total of 408 respondents. Data collection is through online questionnaires. There are three sections questionnaire, demographic factors, financial literacy, and risk profile. The data processing techniques used are descriptive statistical analysis and multiple regressions. The results showed that bank employees in Bandung had financial literacy indexes categorized as “medium” or “sufficient” (66.7%) with a risk profile index of “moderate” type (60%). Demographic factors that affect financial literacy are age, education level, and organizational position. While the factor that affects the risk profile is age and gender. Research has also revealed a strong correlation between financial literacy and risk profile.
BRAND TRUST AS CELEBRITY ENDORSER MARKETING MODERATOR’S ROLE
Authors:   Universitas Teknokrat Indonesia, Febrian Angga , Fadly Muhtad ,   Universitas Teknokrat Indonesia
Published: March 2021

Celebrity endorsement is a form of marketing communication done both online and offline as it creates a positive brand attitude. However, its effectiveness in influencing customers’ purchase decision needs to be considered. This quantitative research took the sample from 249 respondents who experience in shopping and comprehend the role of celebrity endorsement. The SmartPls 3.0 was used in data analyzing techniques, and bootstrap testing was also employed. The results show that celebrity endorsement affects customers’ attitudes, but it does not affect their purchasing behavior. Adding brand trust as a moderator variable enhances the influence of celebrity endorsement on brand attitude. Therefore, marketers need to be able to see how big brand trust is owned before deciding to use celebrity endorsement to market their product. Future researchers can apply models in cultures of other countries and focus on the profile of specific celebrities so that the results can be generalized more.
Электронная структура и оптические спектры соединений GdFeAl и GdFeSi
Authors: Князев Ю.В. , Лукоянов А.В. , Кузьмин Ю.И. , Кучин А.Г. , Платонов С.П.
Published: March 2021

Results of investigations of electronic structure and optical properties of GdFeAl and GdFeSi compounds are presented. Spin-plarized density of states and interband optical conductivity spectra were calculated in frame of DFT+U technique with a correction for strong correlation effects in 4f shell of Gd. Optical properties were measured by ellipsometric technique in wavelength interval of 0.22 – 16 μm. Nature of quantum light absorption is discussed on the base of comparative analysis of experimental and calculated spectra. It is shown that main features of frequency dependencies of the optical conductivity are interpret qualitatively by the calculated density of electronic states.
Электронная структура графена на карбиде кремния, интеркалированного атомами кремния и кобальта
Authors: Дунаевский С.М. , Лобанова Е.Ю. , Михайленко Е.К. , Пронин И.И.
Published: March 2021

The results of ab initio calculations of the spin-polarized band structure of graphene on silicon carbide intercalated with cobalt and silicon atoms are presented. It is shown that metal and silicon atoms during intercalation are localized between the substrate and the buffer layer of carbon atoms. Initially, the cobalt layer is strongly coupled with the buffer layer. The subsequent intercalation of silicon and the formation of cobalt silicide leads to a transition from hybridized state to the formation of quasi-freestanding bilayer graphene on the surface of the system due to the transformation of the buffer layer to the second graphene layer.
Радиометрический метод контроля токов утечки в диэлектриках
Authors: Сотникова Г.Ю. , Гаврилов Г.А. , Муратиков К.Л. , Пассет Р.С. , Смирнова Е.П.
Published: March 2021

A new experimental method for leakage current (conduction current) measurements in dielectrics, based on an analysis of the dynamics of temperature changes of the sample under the action of an electric field is proposed. A new non-contact photodiode IR-temperature sensor carries out high accuracy and high speed monitoring of the sample temperature response. The capabilities of the method are demonstrated on samples of 0.65 PbFe2/3W1/3O3-0.35 PbTiO3 (PFW-PT) ceramic, for which the experimental dependence of conductivity was obtained in a wide temperature range from 20 to 110 ° C.
Амплитудные зависимости диэлектрических потерь в тонкопленочном наногранулированном композите (x)Ni-(1-x)PZT
Authors: Калгин А.В. , Кобяков И.Ю.
Published: March 2021

At temperatures Т below the ferroelectric Curie point and various strengths of a constant electric field E=, the dependences of dielectric losses tgδ in a thin-film nanogranular composite (x)Ni – (1 –x)[Pb0.81Sr0.04(Na0.5Bi0.5)0.15][(Zr0.575Ti0.425)]O3 on the strength of an alternating electric field E~ were studied. It was found that tgδ almost does not vary with increasing E~ up to the strength of some threshold field Et and smoothly increases at E~ > Et. The value of Et decreases as Т increases while x and E= decreases. The observed dependences of tgδ(E~) and Et on Т, x, and E= are explained in terms of the model of interaction of domain boundaries with pinning point defects in ferroelectrics
Синтез, структурные и магнитные свойства NaNiFe-=SUB=-2-=/SUB=-(VO-=SUB=-4-=/SUB=-)-=SUB=-3-=/SUB=-
Authors: Дрокина Т.В. , Великанов Д.А. , Баюков О.А. , Молокеев М.С. , Петраковский Г.А.
Published: March 2021

Методом твердофазного синтеза получено новое магнитное соединение NaNiFe2(VO4)3, приведены результаты изучения методами рентгеновской дифракции, гамма-резонанса и магнитометрии. Кристаллическая структура многокомпонентного ванадата описывается триклинной пространственной группой симметрии P1. Элементарная ячейка содержит шесть неэквивалентных смешанных катионных позиций, занятых разновалентными ионами переходных металлов железа Fe3+ и никеля Ni2+, что способствует реализации состояния с локальным нарушением зарядовой нейтральности. Кроме того, обнаружено наличие двух типов позиций атомов железа: с кислородным окружением как в виде октаэдров, так и квадратных пирамид с неравновероятной их заселенностью железом и никелем. Ход температурной и полевой зависимостей намагниченности в широком температурном интервале характерен для парамагнетика, содержащего ферромагнитные кластеры. Ключевые слова: многокомпонентные ванадаты, кристаллическая структура, магнитные свойства.
Диэлектрические и сегнетоэлектрические свойства тонких гетероэпитаксиальных пленок SBN-50
Authors: Павленко А.В. , Киселев Д.А. , Матяш Я.Ю.
Published: March 2021

The phase transformations and ferroelectric characteristics of thin heteroepitaxial barium-strontium niobate SBN-50 films grown by RF cathode sputtering in an oxygen atmosphere were studied using dielectric spectroscopy and scanning probe microscopy (in the modes of force microscopy of the piezoresponse and Kelvin modes). It is shown that the films are characterized by a low surface roughness, an average size of ferroelectric domains of ~ 100 nm, and spontaneous polarization directed from the substrate to the film surface. Differences in the magnitude of the surface potential signal and its relaxation for the regions polarized at +10 V and –10 V were established. The nature of the change in the dielectric parameters in the temperature range T = 275–500 K indicates that the material belongs to ferroelectric relaxors. The reasons for the established regularities are discussed.
О локальных полях напряжений в гетерогенных средах, определяемых по параметрам акустической эмиссии
Authors: Гиляров В.Л. , Дамаскинская Е.Е.
Published: March 2021

Local internal stress fields were computed from the time series of acoustic emission intervals between the successive signals for the case of structurally different heterogeneous materials. It is shown that a change in the nature of these stresses accumulation can serve as a prognostic sign of impending failure.
Структура и динамика решетки тетрагональных германатов R-=SUB=-2-=/SUB=-Ge-=SUB=-2-=/SUB=-O-=SUB=-7-=/SUB=- (R=Tb-Lu, Y): ab initio расчет
Authors: Рюмшин В.С. , Чернышев В.А.
Published: March 2021

Within the framework of density functional theory, an ab initio calculation was carried out to study the crystal structure, phonon spectrum and elastic constants of a series of rare-earth germanates, including yttrium germanate R2Ge2O7 (R = Tb-Lu, Y) with tetragonal structure. The frequencies and types of fundamental vibrations as well as the intensities of the IR and Raman modes were determined. The degree of participation of ions in each mode was determined from the analysis of the displacement vectors obtained from the ab initio calculation. The calculations were performed for the first time. The corresponding experimental data for the entire series, with the exception of the IR and Raman spectra of yttrium germanate, are absent. The calculations made it possible to interpret and supplement available in the scientific articles results of measurements of the IR and Raman spectra of yttrium germanate Y2Ge2O7.
О контакте двумерного переходного металла с графеноподобным соединением
Authors: Давыдов С.Ю.
Published: March 2021

Within the scope of the simple model analytical expressions for the charge transfer and the Shottky barrier height on the contact of two-dimensional d-metal with graphene-like ANB8-N compound are obtained. It is shown that 2D metal character can be taken into account by the d-band contraction. Using Gr – 2DM and hBN – 2DM systems as an example, it is demonstrated that the proposed approach gives the appropriate results.
Compare Different Blood Parameters Between Different Types of Cathete in Atherosclerosis Patients with Type 2 Diabetus
Authors:   Department of Chemistry, College of Science, Al-Nahrain University, Baghdad, Iraq, A. Ibrahim Suhad , A. Zainulabdeen Jwan ,   Department of Chemistry, College of Science, University of Baghdad, Baghdad, Iraq, M. Jasim Hameed ,   Department of Biotechnology, College of Biotechnology, Al-Nahrain University Baghdad, Iraq
Published: March 2021

Human blood groups ABO (BG) represent an important system in blood transfusion medicine and transplantation, and have a role in the development of heart disease. The current study was conducted with the aim of comparing the types of blood groups and knowing the most affected by atherosclerosis and type 2 diabetes. Our study was consisted of total (n192) population with age range (45-70) years old and overweight in terms of their BMI. The first group included (n64) under Precautinous coronary intervention (PCI) catheterization with atherosclerosis and diabetes type 2. The second group (n64) underwent Diagnostic (DIG) catheterization with diabetes type 2 and without atherosclerosis. The association between blood group types with diabetes type 2 disease and atherosclerosis was investigated. The most prevalent blood group was O+(93.74%) in DIG, (80.84%) in PCI closely followed by group B(49.99%), (44.62%) in DIG and PCI respectively, and group A (43.75%)In both group. Least prevalent blood group was AB (35.25%) in PCI and (12.5%) in DIG group. In conclusion the patients with type O are more likely to have diabetes and atherosclerosis, and those with type B are more likely to develop diabetes. Type A and AB are less likely to develop sclerosis.
Miticidal Evaluation of Different Non-Volatile Bioactive Compounds Extracted from Ferula Oopoda Against Apple Mites
Authors:   Faculty of Basic Sciences, Department of Chemistry, University of Balochistan, Quetta 87300-Pakistan, Saeed Ahmed , Baloch Nizam ,   Faculty of Basic Sciences, Department of Chemistry, University of Balochistan, Quetta 87300-Pakistan, Qambrani Taimur ,   Faculty of Basic Sciences, Department of Chemistry, University of Balochistan, Quetta 87300-Pakistan, Khan Sheraz ,   Faculty of Basic Sciences, Department of Chemistry, University of Balochistan, Quetta 87300-Pakistan, Khan Shahbaz ,   Faculty of Basic Sciences, Department of Chemistry, University of Balochistan, Quetta 87300-Pakistan, Asif Muhammad ,   Faculty of Basic Sciences, Department of Chemistry, University of Balochistan, Quetta 87300-Pakistan
Published: March 2021

The research was administered in order to spot the miticidal effect of wild grown plant namely Ferula oopoda against the mites that destroy the leaf tissue and also the colour of the fruit in trees. The theme was to get the herb’s (1) aerial, stem and root part about 1 kg and was soaked for about 7 days and then extract the oil by the help of vaccum rotary evaporator, the extracted oil is then allowed to stay for a day in HCl (0.2M), then the solution is filtered and then some charcoal is added to the filtrate and now, it is put on the Bunsen burner for a while, now the HCl extract is again filtered and basified by the addition of Sodium hydroxide (5M), the yellow colour is the indication of basification and now the ppts are collected that are formed over the filter paper, the ppts are dried and later on sprayed on the apple mites and their mortality rates are noted at exposure time of 6, 12, 24, 36 and 48h. It may be a new revolutionary technique that can be economical as well as environment friendly as the oil is only lethal for the target apple mites and doesn’t not harm human health.
Improvement of the Solar-Thermal Characteristics of the Flat-Plate Collector Using a Composite Coating
Authors:   Department of Physics, College of Science, Al-Nahrain University, Baghdad, Iraq, H. Jasim Ruaa , A. Al-Tabbakh Ahmed ,   Department of Physics, College of Science, Al-Nahrain University, Baghdad, Iraq, M. Hasan Sinan ,   Al-Nahrain Nanorenewable Energy Research Center, Al-Nahrain University, Baghdad, Iraq
Published: March 2021

A commercially available matt black paint is used as the primary component of a composite coating for low-temperature flat collector systems. The composite coating is composed of the paint, carbon black powder (CBP) and lithium metal oxide (LMO) powder. The CBP and LMO powders are added on the top of the primary paint to improve the solar-thermal conversion characteristics of the collector. The optical and solar-thermal conversion characteristics of these coatings are investigated by means of optical microscopy, optical spectrophotometry, total reflectance measurement, and the measurement of the maximum collector temperature. Results show that the solar-thermal conversion response (maximum temperature) of the collector plate can be improved with the addition of the CBP and LMO powder at low concentrations. This is been demonstrated and discussed in this report. The coatings prepared in the present work can easily be applied on the collector surface and exhibit competing characteristics to other coatings.
,__ ^_. ||:_DOWN_DEEPCUTS_'LOCK[ANIMÉ.INVENTION] :||,•__\-‘ - - ÉTUDES FOR THE BEGINNING OF AN ONLINE PRACTICE
Authors: Josh Spear
Published: March 2021

The Covid-19 pandemic of early 2020 has had a huge and wide-reaching effect. My group made up of four composer-performers called Bastard Assignments was not exempt. We were pulled to continue to make work, the difference now is that we are online at our individual homes and meeting each other on Zoom. Zoom is a company that has been around since 2011 and a lot of us have recently become familiar with it to celebrate birthdays at a distance, catch up with friends, or conduct our business. It was set up by a Chinese computer scientist who only after the ninth attempt at the application secured his visa to live in the USA. Since the beginning of 2020, the worldwide usage of Zoom has risen 67%, its use diversifying from corporate communications to domestic and arts activities. My compositional and performance work with Bastard Assignments is rooted in collaboration, devising, and group creation. It favours memorisation over the use of musical scores, emotional presence over reproducibility. As we take our work together into a purely online workspace, important questions arise. Through a new way of working online, does our adaptability bring about a new form? How will we understand this online work when and if normalcy returns? Skills that we learn as composer-performers are dropped, remade, and tested during this period, how will our practice have changed?
Reiterate, rerun, repeat
Authors: Michael Duch  , Jeremy Welsh
Published: March 2021

Repetition plays a central role in many musical styles and genres. Repetition, rhythm and patterns also play an important part in the visual arts. Here we will show, examine and discuss repetition as a method and main musical element, as well as their correlation with moving images, in a series of audio-visual works we have been working on together since 2016.

Accumulator is one such project and will be the main focus here, where not only repetition, rhythm and patterns appear as musical and visual elements, but is used as an artistic method in itself when repeating performances of a similar material, documenting each one of them and adding the individual performances as layers creating a dense audio-visual orchestral solo performance.

As well as temporal repetition, Accumulator repeats in the spatial dimension, where the staging of a performance features the live performer multiplied, as he is accompanied by pre-recorded video images of himself. According to the spatial characteristics of the given performance space, this repetition of the performer may be frontal / two dimensional, or may extend across several surfaces, creating a surround projection in which the live performer is contained.
Naturfilm
Authors: Elisa Rossholm  , Anna Sofia Rossholm
Published: March 2021

’Naturfilm’ (nature film) consist of three image based essays that reflect on the relation between mankind and nature in Swedish classical nature documentaries, and also on modernity’s negotiation of the separation of nature and human culture by large. The essays include reflections on landscape, natural resources, species and gender relations, indigenous cultures and media materiality. The essays combine images and voice-over, more specifically a series of drawings of still images from existing film footage combined with fragmentary reflections on the images as media inscription and representation.
The essays are media transformations of existing Swedish documentary films from the peak of the classical era, namely from the late 1930s until the early 1950s. In an ecological context, this period represents what is labeled ‘the great acceleration’, an increased exploitation of natural resources, and to some extent an intensified separation of nature and human activities.
Dermoscopy of dermatofibromas: a new perspective
Authors: Aytekin Sema , Kaynak Emre , Ayhan Erhan
Published: March 2021

Introduction: In dermoscopic studies on dermatofibromas, some
publications divide the appearance of lesions into standardized
patterns, and some publications classify the clinical appearance of the
lesions by comparing them with existing dermatological lesions.
Objectives: This study aims to re-evaluate the dermoscopic findings and
patterns of dermatofibromas from a different perspective. Methods: In
this study, 142 lesions of 72 patients were evaluated dermoscopically
and their patterns were schematized. Results: In our study, a total of
15 patterns consisting of main and sub-patterns were created. The most
common patterns we detected were pattern 1 (1a: 13.4%, 1b: 8.5%),
pattern 8 (8a: 10.6%, 8b: 4.2%), pattern 2 (2a: 9.2%, 2b: 4.2%),
respectively. Conclusions: Patterns of DFs were reclassified while
preserving basic patterns. We think that the new sub-patterns and
schematization with this study can contribute to better understanding of
DFs.
Point-of-care testing for influenza in a university emergency department (ED): A prospective study
Authors: Perlitz Benjamin , Slagman Anna , Hitzek Jennifer , Riedlinger Dorothee , Möckel Martin
Published: March 2021

Background: Seasonal influenza is a burden for emergency departments.
The aim of this study was to investigate whether point-of-care (POC) PCR
testing can be used to reduce staff sick days and improve diagnostic and
therapeutic procedures. Methods: Using a cross-over design, the cobas®
Liat® Influenza A/B POC PCR test (Liat) was compared to standard
clinical practice during the 2019/2020 influenza season. All adult
patients (aged ≥18 years) with fever (≥38°C) and respiratory symptoms
were included. Primary endpoints were prevalence of influenza infections
in the ED and staff sick days. Secondary endpoints were frequency of
antiviral and antibacterial therapy, time between admission and test
result or treatment initiation, patient disposition, ED length of stay
(LOS) and for in-patients mortality and LOS. Nurses were interviewed
about handling and integration of POC testing. The occurrence of
SARS-CoV-2 infections coincided with the second half of the study.
Results: A total of 828 patients were enrolled in the study. All 375
patients of the intervention group were tested with Liat, 103 of them
(27.6%) tested positive. During the intervention period staff sick days
were reduced by 34.4% (p=0.023). Significantly more patients in the
intervention group received antiviral therapy with
neuraminidase-inhibitors (7.2% vs. 3.8%, p=0.028) and tested patients
received antibiotics more frequently (40.0% vs. 31.6%, p=0.033).
Patients with POC test were transferred to external hospitals
significantly more often (5.6% vs. 1.3%, p=0.01). Conclusion: We
conclude that POC testing for influenza is useful in the ED, especially
if it is heavily frequented by patients with respiratory symptoms.
VEXAS: A Non - Systematic Literature Review
Authors: Bharadwaj Hareesha , Marya Archisha , Viswanathan Janani , Gulati Suraj
Published: March 2021

Aim: Through this review, the authors intend to accumulate existing
knowledge of VEXAS for referral, and to serve as an inspiration for
further discovery, funding and research into the discipline. Methods:
The non systematic literature review was conducted in January 2021,
using Google Scholar and PubMed as the major extensive search engines.
The keyword ‘VEXAS’ was used to narrow search results, and data was
restricted to only those articles published in English. Results: The
search, followed by the selection for relevancy led to a total of 5
pieces of literature being used for the purpose of this review; the lack
of a huge number of results arises from the fact that the disease has
been recently discovered. Discussion: Adult-onset inflammatory
conditions are of increasing interest to medical professionals, and a
number of patients with these conditions present with symptoms for which
a concrete diagnosis is difficult to establish. In recent times, using
an unconventional, yet remarkably effective genotype – based approach,
researchers at the NIH have been able to discover a number of somatic
mutations in UBA 1, which give rise to a unique disease. The disease,
which has been named VEXAS (vacuoles, E1 enzyme, X-linked,
autoinflammatory and somatic syndrome) by the founders, arises from
specific somatic mutations in the UBA 1 gene, and patients presenting
with VEXAS have clinical manifestations - as sporadic fevers, chronic
inflammation of the lungs and cartilage, and atypical vacuoles in
myeloid cells, venous thromboembolism, ear and nose chondritis and
macrocytic anaemia. VEXAS stems from accumulated somatic mutations in
UBA 1, typically manifesting in three major variants, severely impairing
the natural ubiquitylation process in cells, and shows no observable
pattern of inheritance, according to the preliminary research conducted
at NIH. Conclusion: Further study into VEXAS is needed for a better
understanding of the syndrome.
Quick and easy: 1-day-protocol for detection of normal alternative splicing events and aberrant spliceogenic transcripts with deep RNA sequencing
Authors: Dragoš Vita Šetrajčič , Stegel Vida , Blatnik Ana , Klančar Gašper , Krajc Mateja , Novaković Srdjan
Published: March 2021

RNA sequencing is a promising technique for detecting normal and
aberrant RNA isoforms. Here, we present a new single-gene,
straightforward 1-day hands-on protocol for detection of splicing
alterations with deep RNA sequencing from blood. We have validated our
method’s accuracy by detecting all normal splicing isoforms of STK11
gene that were previously published. Additionally, the same technique
was used to provide the first comprehensive catalogue of naturally
occurring alternative splicing events of the NBN gene in blood.
Furthermore, we demonstrate that our approach can be used for detection
of splicing impairment caused by genetics variants. Due to the
simplicity of our approach it can be incorporated into any molecular
diagnostics laboratory for determination of variant’s impact on
splicing.
Microscopic Versus Endoscopic Stapes Surgery: A Systematic Review and Meta-analysis
Authors: HAJIIOANNOU JIANNIS , Gkrinia Eleni , Tzimkas-Dakis Konstantinos , Palla Effrosyni , Brotis Alexandros , Korais Christos , Saratziotis Athanasios , Lachanas Vasileios , Skoulakis Charalampos
Published: March 2021

Objectives Endoscopic approaches constitute a newly introduced and
promising technique in the field of stapes surgery, presenting favorable
outcomes, so far. This study aims to compare endoscopic and microscopic
stapes surgery based on current literature evidence, in terms of their
efficacy and safety characteristics. Design We conducted a systematic
literature search of three medical databases (Pubmed, Cochrane Library,
and Scopus). We focused on randomized controlled studies or
observational studies comparing microscopic to endoscopic stapes
surgery. Data related to the efficacy and safety of each technique were
extracted. Outcome data were summarized using the pooled mean
differences or pooled odds ratio along with their 95% confidence
intervals, according to the available data. The quality of evidence was
assessed according to the GRADE recommendations. Results Thirteen
studies with 705 patients were included in the meta-analysis. Success
rate was evaluated by estimating air-bone gap improvement, resulting in
comparable outcomes for the two techniques (mean difference: -0.20; 95%
CI: -0.53, 0.14). No statistically significant difference was detected
concerning postoperative complications, except for dysgeusia that was in
favor of the endoscopic approach (OR: -1.46; 95% CI: -2.45, -.047). The
overall quality of evidence was assessed to range from “Low” to “Very
Low”. Conclusion Endoscopic stapes surgery is an innovative alternative
to the microscopic technique, resulting in commensurate outcomes in
terms of success rate and complications. Further high-quality studies
are needed, to adequately compare the two approaches, particularly in
terms of operation time, learning curve, cost-effectiveness, and otology
surgical skills acquisition.
Algorithms for activity correction models for geochemical speciation and reactive transport modelling
Authors: Carrayrou Jerome , Bertagnolli Caroline , Fahs Marwan
Published: March 2021

Reactive transport codes are today one of the cornerstones of
environmental research. They now contain multiphysics with very complex
algorithms, including flow, transport, chemical and sometimes heat
transport, mechanical and/or biological algorithms. Because of this
complexity, some parts of these algorithms still have not been
sufficiently studied. Here, we present a comparison of 3 algorithms for
activity correction, a specific subset of equilibrium chemistry
algorithms. We show that the most used algorithm (the inner fixed-point
algorithm) or the most rigorous algorithm (the full Newton) might not be
the most efficient, and we propose the outer fixed-point algorithm,
which is more robust and faster than other algorithms.
Small for Gestational Age Births, Gestational Age, and Labour Outcomes: A Population-Based Study in the US
Authors: Brandt Justin , ONLY) Cande Ananth (STATS CONSULTS
Published: March 2021

Objective: To estimate the causal impact of small for gestational age
(SGA) births on caesarean delivery, with and without trial of labour
(TOL); and to quantify how much of the association is mediated through
gestational age at delivery. Design: Cross-sectional analysis. Setting:
Para 2 women who delivered non-anomalous, singleton live births from
22-44 weeks’ gestation in the US (2015-2018). Main outcomes and
measures: Caesarean delivery with and without TOL. The exposure was SGA
births (sex-specific birthweight <5th and <3rd
percentiles for gestational age), and AGA births (10-89th percentile).
We performed causal mediation analysis to determine the impact of
gestational age at delivery (22-33, 34-36, 37-38, 39-40 and ≥41 weeks)
as intermediate. Results: Of the 3,755,798 subjects, compared to AGA
(29.6%), caesarean risks were higher for SGA <5th (34.3%)
and SGA <3rd (36.4%) percentiles. For SGA <5th
percentile, the adjusted excess risk of caesarean delivery without TOL
had a “U” shaped association, with increased risk at preterm
gestations, nadir at 39-40 weeks, and increased thereafter. The
decomposition analysis revealed the driver of this excess risk was SGA
births. The risk of caesarean delivery with TOL was highest
<34 weeks’ gestation and was primarily an interaction effect.
As gestation advanced, SGA births contributed proportionately greater to
the risk. Associations were stronger for SGA <3rd percentile.
Conclusions: Exposure to SGA drives high rates of prelabour caesareans
and contributes to high risks of caesarean deliveries after TOL at
>41 weeks gestation; a different mechanism drives high
rates of caesareans after TOL at preterm gestations.
Frying stability of virgin and refined sesame oils as compared to refined olive oil
Authors: Farhoosh Reza , Salehi Hasan
Published: March 2021

Frying stability of two virgin (VSO) and refined (RSO) sesame oils was
compared with that of a refined olive oil (ROO). The oils were used to
fry potato stripes at 180 °C and conjugated dienes (CDV), total
carbonyls (CV), and thermo-oxidative and hydrolytic polar components
were monitored over time. The rate of change in CDV (mmol l–1 h–1) was
significantly lower for ROO (0.72) than for VSO (1.00) and RSO (1.84).
The change in CV for ROO (2.31 μmol g–1 h–1) was significantly much
faster than those for RSO (1.89) and VSO (1.17). Based on the
thermo-oxidative polar components, the calculated frying times for VSO,
RSO, and ROO were on the order of 32.1, 13.9, and 15.4 h. However, VSO
contained significantly the highest contents of hydrolytic polar
components over time and RSO exhibited more resistance than ROO on this
basis.
EVALUASI KOMUNITAS TERUMBU KARANG DI PERAIRAN CAGAR ALAM LAUT KRAKATAU
Authors: Novriadi Novriadi , Widiastuti Endang Linirin , Surya Rikha Aryanie
Published: March 2021

Cagar Alam Laut Krakatau berada di daerah vulkanik Gunung Anak Krakatu. Aktivitas seismik yang diakibatkan oleh magma chamber Anak Krakatau menyebabkan goncangan pada dasar laut yang memungkinkan bergesernya substrat yang menjadi tempat terumbu karang tumbuh, Selain itu debu vulkanik akan mempengaruhi kalsifikasi dan pertumbuhan karang sehingga karang yang terbentuk akan rapuh dan rentan terhadap pengaruh lingkungan, seperti arus dan goncangan. Tujuan penelitian ini adalah untuk mengetahui kondisi terkini komunitas serta keanekaragaman terumbu karang di Cagar Alam Laut Krakatau. Penelitian dilakukan dari bulan Juli sampai Oktober 2012. Perairan yang menjadi stasiun penelitian adalah perairan Pulau Rakata. Metode manta tow digunakan pada saat survei pendahuluan dan metode Line Intercept Transect (LIT) digunakan dalam pengambilan data terumbu karang. Stasiun penelitian yang berda di perairan Pulau Rakata dibagi menjadi empat titik pengambilan sampel. pada kedalaman 5 meter dengan panjang transek 50 meter searah garis pantai. Hasil pengamatan menunjukkan bahwa dari 27 spesies dalam 7 famili terumbu karang yang ditemukan pada stasiun penelitian kondisinya bervariasi dari baik sekali hingga rusak dengan tingkat tutupan berkisar antara 90,88%, 56,54%,dan 38,32 %.
PENGARUH PEMBERIAN PAKAN TERFERMENTASI DAN PAKAN ALAMI TERHADAP LAJU PERTUMBUHAN Diaphanosoma sp. DI LABORATORIUM
Authors: Pramudyastuty Fajar , Murwani Sri , Rusyani Emy
Published: March 2021

Diaphanosoma sp. adalah anggota Cladocera yang lebih dikenal sebagai kutu laut. Zooplankton ini berpotensi sebagai pakan alami bagi benih atau larva ikan karena siklus hidupnya yang relatif singkat dan mudah dikultur. Untuk mengetahui pengaruh pemberian pakan terfermentasi dengan campuran pakan alami terhadap laju pertumbuhan Diaphanosoma sp. maka telah dilakukan penelitian di Laboratorium Pakan Hidup Balai Besar Pengambangan Budidaya Laut Lampung dari bulan Maret hingga April 2013 dengan menggunakan Rancangan Acak Lengkap (RAL) dengan 5 perlakuan dan 5 ulangan. Parameter yang diamati adalah kepadatan populasi, laju pertumbuhan populasi spesifik, analisa proksimat dan kualitas air. Data dianalisis menggunakan analisis sidik ragam dan dilanjutkan uji Beda Nyata Terkecil (BNT) pada taraf 5%. Hasil penelitian menunjukkan bahwa kombinasi pakan terfermentasi dan pakan alami meningkatkan kepadatan dan laju pertumbuhan populasi spesifik Diaphanosoma sp. Kombinasi 25% pakan terfermentasi dan 75% pakan alami menghasilkan kepadatan populasi (1.10 ind/l) dan laju pertumbuhan populasi spesifik Diaphanosoma sp. tertinggi (21,7 %/hari).
ESTIMASI TABLE RIPE BUAH PISANG MULI (Musa acuminata L.) BERDASARKAN LAJU RESPIRASI KLIMAKTERIK DAN UJI IODINE
Authors: Roselyn Arini Pradita , Zulkifli Zulkifli , Ellyzarti Ellyzarti
Published: March 2021

Estimasi table ripe buah pisang Muli berdasarkan laju respirasi klimakterik dan uji iodine telah dilakukan pada bulan Maret 2013. Tujuan penelitian ini adalah untuk menentukan saat table ripe dari buah pisang muli terjadi. Penelitian ini menggunakan rancangan acak lengkap dengan 7 tahap pematangan buah pisang Muli sebagai perlakuan dan 4 ulangan. Laju respirasi diukur menggunakan respirometer. Karbohidrat terlarut total diukur menggunakan metode fenolsulfur dan absorbansi diukur menggunakan spektrofotometer dengan panjang gelombang 490 nm. Pati dideteksi dengan uji iodine. Gula pereduksi dideteksi dengan metode Benedict. Data dianalisis ragam pada taraf nyata 5 %. Hasil penelitian menunjukkan bahwa laju respirasi dan kandungan karbohidrat terlarut total tertinggi terjadi pada tahap 5. Tahap 1 dan tahap 2 mengandung banyak pati, sedangkan tahap 3, 4, dan 5 mengandung sedikit pati. Kandungan pati tidak ditemukan pada tahap 6 dan 7. Tidak ditemukan kandungan gula pereduksi pada tahap 1 dan tahap 2. Pada tahap 3 mengandung banyak gula pereduksi sedangkan tahap 4, 5, and 6 mengandung sedikit gula pereduksi. Tidak ditemukan kandungan gula pereduksi pada tahap 7. Pada tahap 5 kulit buah pisang muli didominasi warna kuning dengan sedikit warna hijau sehingga dapat disimpulkan bahwa table ripe buah pisang Muli terjadi pada tahap 5.
PENGARUH ETHREL TERHADAP LAJU RESPIRASI DAN KANDUNGAN KLOROFIL PADA BUAH JERUK NIPIS (Citrus aurantifolia Swingle) SELAMA PEMATANGAN
Authors: Khusuma Ari , Zulkifli Zulkifli , Handayani Tundjung Tripeni
Published: March 2021

Pengaruh ethrel terhadap laju respirasi dan kandungan klorofil buah jeruk nipis (Citrus aurantifolia Swingle) selama pematangan telah diteliti pada bulan Maret 2013. Penelitian ini dilaksanakan dalam rancangan acak lengkap. Perlakuan yang digunakan adalah larutan ethrel 0%, 5%, 10%, 15% and 20% dengan 5 pengulangan. Parameter yang diamati adalah rata-rata laju respirasi dan kandungan klorofil 4 dan 8 hari setelah perlakuan. Laju respirasi diukur dengan respirometer sederhana. Kandungan klorofil diukur dengan spektorfotometer (645 dan 663 nm). Analisis ragam dan uji BNT dilakukan pada taraf 5%. Hubungan antara laju respirasi dan kandungan klorofil ditentukan dengan regresi. Hasil penetlitian menunjukkan bahwa ethrel dengan konsentrasi 15% meningkatkan laju respirasi 4 hari setelah perlakuan sedangkan konsentrasi 10% meningkatkan laju respirasi 8 hari setelah perlakuan. Konsentrasi ethrel 15% menurunkan klorofil a dan total 4 hari setelah perlakuan sedangkan konsentrasi 10% menurunkan klorofil a, b dan total 8 hari setelah perlakuan. Konsentrasi ethrel 15% merupakan konsentrasi optimal untuk meningkatkan laju respirasi dan kandungan klorofil. Dari percobaan ini disimpulkan bahwa ethrel mempengaruhi laju respirasi dan kandungan klorofil buah jeruk nipis.
PENGARUH KEBISINGAN TERHADAP KADAR GLUKOSA DARAH MENCIT (Mus musculus L.) JANTAN
Authors: Ismiyati Feni , Nurcahyani Nuning , Kanedi M.
Published: March 2021

Kebisingan adalah salah satu faktor stres bagi manusia. Stress karena bising dapat mempengaruhi sistem endokrin sehingga membahayakan kesehatan. Tujuan penelitian ini adalah untuk mem-buktikan bahwa kebisingan dapat mempengaruhi kadar glukosa darah mencit (Mus musculus L.) jantan. Penelitian ini telah dilaksanakan pada bulan Mei - Juni 2013 di Laboratorium Zoologi Jurusan Biologi FMIPA Universitas Lampung menggunakan Rancangan Acak Lengkap (RAL) dengan 1 kelompok kontrol dan 4 kelompok diberi perlakuan kebisingan dengan intensitas kebisingan 85-90 dBA dengan waktu pemaparan 6, 8, 10 dan 12 jam/hari selama 21 hari. Tiap kelompok percobaan terdiri atas 5 individu mencit. Parameter yang diamati dalam penelitian ini adalah kadar glukosa darah mencit. Hasil pengamatan di analisis menggunakan analisis statistik deskriptif. Hasil penelitian menunjukkan bahwa kebisingan dengan intensitas 85-90 dBA meningkatkan kadar glukosa darah mencit (Mus musculus L.) jantan. Rerata kadar glukosa darah mencit jantan yang diberi perlakuan kebisingan lebih tinggi dibandingkan dengan kontrol dan kadar glukosa darah tertinggi pada pemaparan 12 jam/hari adalah 194 mg/dL.
KETAHANAN TANAMAN TERONG (Solanum melongena L.) HASIL INDUKSI POLIPLOIDISASI DENGAN EKSTRAK UMBI KEMBANG SUNGSANG (Gloriosa superba L.) TERHADAP JAMUR Colletotrichum capsici (Syd.) Butler & Bisby
Authors: Sari Mulya , Ernawiati Eti , Agustrina Rochmah , Yulianty Yulianty
Published: March 2021

Tujuan penelitian ini adalah memperoleh konsentrasi ekstrak umbi kembang sungsang (Gloriosa superba) yang optimum untuk menghambat perkembangan jamur Colietotrichum capsici dan memperoleh kultivar tanaman terong (Solanum melongena) yang tahan terhadap penyakit antraknosa. Penelitian dilakukan di Laboratorium Botani, Jurusan Biologi, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Lampung menggunakan Rancangan Acak Kelompok (RAK) yang terdiri dari 2 faktor dan 3 ulangan. Faktor pertama, konsentrasi ekstrak (A): 25%, 50%, dan 75%. Faktor kedua, kultivar terong (B): Wulung, Pahala dan Patria. Parameter pengamatan meliputi persentase kerusakan daun, tinggi tanaman, berat basah dan berat kering tanaman terong. Hasil percobaan menunjukkan bahwa ekstrak umbi kembang sungsang berpengaruh terhadap persentase kerusakan daun, tinggi tanaman, berat basah dan berat kering tanaman terong. Secara keseluruhan kombinasi perlakuan yang optimum untuk menekan perkembangan jamur C. capsici adalah konsentrasi 50% pada kultivar Wulung.
STUDI EKOLOGI TEMPAT PERINDUKAN VEKTOR MALARIA DI DAERAH RAWA DESA LEMPASING KECAMATAN PADANG CERMIN KABUPATEN PESAWARAN PROPINSI LAMPUNG
Authors: Anasis Annisa Mulia , Setyaningrum Endah , Suratman Suratman
Published: March 2021

Kabupaten Pesawaran merupakan wilayah dengan tingkat endemisitas malaria yang tinggi di Provinsi Lampung, karena sebagian wilayahnya berupa pantai berawa dan terdapat tambak yang terbengkalai. Penelitian ini bertujuan untuk mengetahui karakteristik tempat perindukan vektor malaria dan hubungan antara faktor abiotik dengan kepadatan larva nyamuk pada tempat perindukan vektor malaria di daerah rawa. Penelitian ini menggunakan metode observasi dengan mengamati faktorfaktor ekologi berupa faktor fisik dan kimia (suhu air, kedalaman air, pH, kadar oksigen terlarut (DO), dan salinitas air,), dan faktor biologi yaitu jenis tumbuhan air, hewan yang terdapat di sekitar perindukan, dan kepadatan larva pada tiga rawa. Hasil penelitian menunjukkan bahwa karakteristik tempat perindukan vektor malaria yaitu, suhu 26,220C, Kedalaman 18,2 cm, pH 6,77, DO 2,71 mg/L, dan Salinitas 3,430/00, dan. Kepadatan larva hanya ditemukan pada Rawa 2 yaitu 0,33 ekor/250 ml kemudian jenis tumbuhan yang ditemukan di sekitar tempat perindukan yaitu kangkung, alga, pohon kelapa, dan pohon asam serta hewan air berupa ikan mujair dan keong. Nilai kimia seperti DO 2,71 mg/L dan salinitas 3,430/00 yang kecil ini tidak mendukung kehidupan larva sehingga hubungan antara faktor fisik dan kimia dengan kepadatan larva tidak memberikan korelasi signifikan pada taraf nyata 0,05.
STUDI KANDUNGAN PROTEIN DI COLUMELLA, LOCULAR CAVITY dan PERICARP WALL SELAMA PROSES PEMATANGAN BUAH TOMAT PLUM (Solanum lycopersicum L. var. roma)
Authors: Permani Indah Mayang Ika , Zulkifli Zulkifli , Lande Martha L.
Published: March 2021

Tujuan penelitian ini adalah untuk mengetahui kandungan protein columella, locular cavity dan pericarp wall selama proses pematangan buah tomat. Penelitian ini dilaksanakan dalam rancangan acak lengkap dengan satu faktor utama yaitu tingkat kematangan, dan 6 level: tahap 1 = green, tahap 2 = breakers, tahap 3= turning, tahap 4 = pink, tahap 5 = light red, dan tahap 6 = full red dengan 6 ulangan. Parameter dalam penelitian ini adalah nilai tengah kandungan protein. Analisis ragam dan uji BNT dilakukan pada taraf nyata 5%. Kandungan protein diukur dengan metode Biuret. Kandungan protein tertinggi pada Columella terjadi pada tahap 1 (0,962 ± 0,054 mg/g jaringan) dan terendah pada tahap 3 (0,523 ± 0,053 mg/g jaringan). Kandungan protein tertinggi pada Locular Cavity terjadi pada tahap 1 (0,991 ± 0,074 mg/g jaringan) dan terendah pada tahap 3 yaitu 0,583 ± 0,073 mg/g jaringan. Kandungan protein tertinggi pada Pericarp Wall terjadi pada tahap 1 (1,066 ± 0,067 mg/g jaringan) dan terendah pada tahap 4 (0,547 ± 0,051 mg/g jaringan). Pola perubahan kandungan protein di columella dan locular cavity relatif mengikuti pola respirasi klimakterik. Sedangkan pericarp wall tidak mengikuti pola respirasi klimakterik. Oleh karena itu, dapat disimpulkan bahwa tahap 1 dan tahap 2 merupakan perioda praklimakterik, awal klimakterik terjadi pada tahap 3, dan puncak klimakterik terjadi pada tahap 5.
KARAKTERISASI SIFAT BIOKIMIA ISOLAT BAKTERI KITINOLITIK ASAL TAMBAK UDANG
Authors: Wahyuni Sri , Wahyuni Kirami Mery , Khaeruni Andi
Published: March 2021

Informasi tentang sifat-sifat biokimia yang dimiliki oleh suatu isolat bakteri memberi peluang dalam mengungkap potensi isolat untuk pemanfaatan pada berbagai bidang. Penelitian ini bertujuan untuk mengetahui sifat-sifat biokimia dari bakteri kitinolitik isolat SSA2.B4.1 dan SSD2A7.1 yang berasal dari tambak udang di Kabupaten Pinrang dan Maros, Sulawesi Selatan. Penelitian dilakukan dengan uji-uji biokimia terhadap kedua isolat tersebut. Hasil penelitian menunjukkan isolat bakteri SSA2B4.1 berjenis gram positif dan mampu menggunakan berbagai senyawa karbohidrat sebagai sumber karbon, sedangkan SSD2A7.1 berjenis gram negatif dan tidak mampu menggunakan berbagai senyawa karbohidrat sebagai sumber karbon. Isolat bakteri SSA2.B4.1 selain mampu mensekresi enzim kitinase, juga mampu mensekresi enzim selulase dan protease, sehingga berpotensi untuk diaplikasikan pada bidang industri deterjen, proses deproteinasi dalam pembuatan kitin serta sebagai agen hayati patogen tanaman.
PERBEDAAN SALINITAS DENGAN PAKAN ALAMI KOMBINASI TERHADAP PERTUMBUHAN Diaphanosoma sp. DI BALAI BESAR PENGEMBANGAN BUDIDAYA LAUT LAMPUNG
Authors: Putra Gigih Janotama , Murwani Sri , Rusyani Emmy
Published: March 2021

Zooplankton dari ordo Cladocera yaitu Diaphanosoma sp. merupakan pakan alami yang baik bagi larva ikan dan udang. Untuk keperluan kultur selain faktorpakan, faktor lingkungan juga sangat penting dalam menunjang pertumbuhan dan perkembangannya. Salah satu faktor lingkungan yang mempengaruhi pertumbuhan Diaphanosoma sp. adalah salinitas. Diaphanosoma sp. mempunyai keterbatasan dalam toleransinya terhadap salinitas sehingga mempengaruhi pertumbuhan dan perkembangannya. Pakan alami yang banyak dimanfaatkan untuk budidaya Diaphanosoma sp. antara lain Tetraselmis sp., Nannochloropsis sp. dan Dunaliella sp. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh laju pertumbuhan Diaphanosoma sp. terhadap tingkat salinitas media dengan pemberian pakan alami kombinasi. Penelitian ini dilaksanakan di Laboratorium Pakan Hidup (Zooplankton) Balai Besar Pengembangan Budidaya Laut (BBPBL) Lampung pada bulan Januari sampai bulan Maret 2014. Rancangan percobaan yang digunakan adalah Rancangan Acak Lengkap (RAL) dengan 6 perlakuan dan 4 ulangan.Data dianalisis dengan analisis sidik ragam (ANOVA) dan diuji lanjut dengan UJI Beda Nyata Terkecil (BNT) pada taraf 5%. Hasil penelitian menunjukkan bahwa perlakuan yang terbaik adalah perlakuan P1 yaitu media salinitas 10 ppt menghasilkan kepadatan populasi Diaphanosoma sp. tertinggi sebesar 880 ind/l dan laju pertumbuhan populasinya sebesar 26,24%.
KEPADATAN DAN DISTRIBUSI LARVAE DIPTERA PADA PHYTOTELMATA DI DAERAH ENDEMIS DEMAM BERDARAH DENGUE DI SUMATERA BARAT
Authors: Rosa Emantis
Published: March 2021

Penelitian tentang komposisi dan distribusi larva Diptera pada Phytotelmata telah dilakukan di tiga lokasi pemukiman daerah endemis demem berdarah dengue yang bertujuan untuk mengetahui komposisi dan distribusi larva Diptera pada phytotelmata. Hasil penelitian didapatkan komposisi larva Diptera pada phytotelmata terdiri dari Ae. aegypti, Ae. albopictus, Cx.tritaeniorhynchus, Ar.subalbatus, Chironomus sp. Tipula sp., Psychoda sp. Ke tujuh larva Diptera terdistribusi pada ke empat jenis phytotelmata dengan nilai ragam Komponen Utama1. (98,03%) dan nilai ragam Komponen Utama 2. (1,55%) dan total keragaman sebesar (99,58%).dan sebagai larva penciri pada ke empat jenis phytotelmata adalah larva Ae.albopictus.
ANALISIS LIGNIN DAN STRUKTUR ANATOMI PLANLET TOMAT (Lycopersicum esculentum MILL) HASIL SELEKSI ASAM SALISILAT SECARA IN VITRO
Authors: Nurcahyani Endang , Lindawati Lindawati
Published: March 2021

Kajian tentang seleksi planlet tomat dengan asam salisilat konsentrasi 0, 15, 30, 45, dan 60 ppm secara in vitro terhadap struktur anatomi dan lignifikasi, telah dilaksanakan di Laboratorium Kultur Jaringan, Jurusan Biologi, Fakultas MIPA,Universitas Lampung. Penelitian ini dilakukan dari bulan Juni sampai Agustus 2014. Data yang diperoleh selama seleksi dengan asam salisilat berupa data kualitatif dan data kuantitatif. Data kualitatif disajikan dalam bentuk deskriptif komparatif dan di dukung foto. Dalam penelitian ini digunakan rancangan acak lengkap dengan 6 ulangan. Analisis ragam dan uji BNT dilakukan pada taraf nyata 5%. Hasil penelitian menunjukkan bahwa ketebalan lignin pada xilem batang planlet tomat yang diimbas asam salisilat pada konsentrasi 15, 30, dan 60 ppm menunjukkan ketebalan yang lebih besar dibandingkan kontrol, sedangkan pada konsentrasi 45 ppm ketebalannya lebih kecil dibandingkan kontrol. Struktur anatomi batang planlet tomat yang diimbas asam salisilat dibandingkan dengan kontrol terdapat perbedaan pada bagian epidermis, jari-jari empulur, dan kambium. Pada epidermis, jari-jari empulur, dan kambium batang yang diimbas asam salisilat mengalami lignifikasi.