bluuebunny/crossref_metadata_2025 huggingface dataset:
A comprehensive genomic scan reveals gene dosage balance impacts on quantitative traits inPopulustrees
Authors: Bastiaanse Héloïse , Zinkgraf Matthew , Canning Courtney , Tsai Helen , Lieberman Meric , Comai Luca , Henry Isabelle , Groover Andrew
Published: June 2019

Gene dosage variation and the associated changes in gene expression influence a wide variety of traits, ranging from cancer in humans to yield in plants. It is also expected to affect important traits of ecological and agronomic importance in forest trees, but this variation has not been systematically characterized or exploited. Here we performed a comprehensive scan of thePopulusgenome for dosage-sensitive loci affecting quantitative trait variation for spring and fall phenology and biomass production. The study population was a large collection of clonally propagated F1 hybrid lines ofPopulusthat saturate the genome 10-fold with deletions and insertions (indels) of known sizes and positions. As a group, the phenotypic means of the indel lines consistently differed from control nonindel lines, with an overall negative effect of both insertions and deletions on all biomass-related traits but more diverse effects and an overall wider phenotypic distribution of the indel lines for the phenology-related traits. We also investigated the correlation between gene dosage at specific chromosomal locations and phenotype, to identify dosage quantitative trait loci (dQTL). Such dQTL were detected for most phenotypes examined, but stronger effect dQTL were identified for the phenology-related traits than for the biomass traits. Our genome-wide screen for dosage sensitivity in a higher eukaryote demonstrates the importance of global genomic balance and the impact of dosage on life history traits.
Anomalous phonon relaxation in Au
333
(SR)
79
nanoparticles with nascent plasmons
Authors: Higaki Tatsuya , Zhou Meng , He Guiying , House Stephen D. , Sfeir Matthew Y. , Yang Judith C. , Jin Rongchao
Published: June 2019

Significance

Plasmons and evolution from the metallic to nonmetallic state in metal nanoparticles (NPs) are being actively pursued in nanoscience research. Previous research has not been able to probe the fundamental science of nascent plasmons due to major difficulties in the synthesis of atomically precise NPs in the 2- to 3-nm range. Herein, we report intriguing ultrafast electron dynamics in ultrasmall, atomically precise Au
333
(SR)
79
NPs (2.5-nm diameter). Femtosecond transient-absorption spectroscopy revealed an unprecedented relaxation process of 4–5 ps—an instantaneous phonon–phonon relaxation evidenced by the similarity in spectroscopic profiles. The unique dynamics of Au
333
(SR)
79
, plus plasmon splitting, is expected to stimulate future work on the ultrasmall size regime of nanometals with nascent plasmons.
The E3 ligase HOIL-1 catalyses ester bond formation between ubiquitin and components of the Myddosome in mammalian cells
Authors: Kelsall Ian R. , Zhang Jiazhen , Knebel Axel , Arthur J. Simon C. , Cohen Philip
Published: June 2019

Significance

The formation of isopeptide bonds between the C-terminal carboxylate of ubiquitin and ε-amino groups of lysine residues on another protein is a major mechanism for regulating protein function. Ubiquitin can also form peptide bonds with the N-terminal α-amino group of another ubiquitin, a reaction catalysed by the HOIP component of the linear ubiquitin assembly complex (LUBAC). Here, we identify the HOIL-1 component of LUBAC as an unusual ligase that catalyses the formation of oxyester bonds between the C-terminal carboxylate of ubiquitin and serine and threonine residues in other proteins. We identify components of the Myddosome as physiological substrates of HOIL-1, indicating a role for HOIL-1 in regulating innate immunity.
Genome-wide CRISPR screen identifies suppressors of endoplasmic reticulum stress-induced apoptosis
Authors: Panganiban Ronald A. , Park Hae-Ryung , Sun Maoyun , Shumyatcher Maya , Himes Blanca E. , Lu Quan
Published: June 2019

Significance

Dysregulated endoplasmic reticulum (ER) stress response contributes to the pathogenesis of myriad diseases. The molecular pathways leading to ER stress-induced cell death are well characterized; however, much less is known about how cells suppress excessive ER stress response to avoid apoptosis and restore homeostasis. Using a CRISPR-based loss-of-function genetic screen, our study uncovered multiple suppressors of ER stress response. These suppressors include a polycomb protein complex that directly inhibits the expression of the transcriptional factor central to ER stress-induced cell death and a microRNA that targets IRE1, a canonical ER stress pathway component. Our study reveals regulatory mechanisms that ameliorate potentially damaging stress response and provides potential therapeutic targets for pathologies whose etiology is linked to overactive ER stress response.
A symmetric geometry of transmembrane domains inside the B cell antigen receptor complex
Authors: Gottwick Cornelia , He Xiaocui , Hofmann Andreas , Vesper Niklas , Reth Michael , Yang Jianying
Published: June 2019

Significance

The specific activation of B lymphocytes via the binding of antigen to their B cell antigen receptor (BCR) is of central importance for the establishment of humoral immunity and a successful vaccination. A better understanding of the antigen sensing process of B cells requires insight into the structure of the BCR comprising the mIg molecule and the Igα/Igβ heterodimer in a 1:1 complex. How a symmetric molecule such as the mIg molecule is asymmetrically associated with only one Igα/Igβ heterodimer has been a puzzle. We suggest that inside the lipid bilayer the BCR forms a symmetric Igα-mHC:mHC-Igβ complex. Our results give insight into the BCR structure and the B cell activation mechanism.
Palestinian Arabic dual formation in typically developing heritage speakers of Palestinian Arabic
Authors: Khamis-Dakwar Reem , Ahmar May , Froud Karen
Published: June 2019

This study provides preliminary data on Palestinian Arabic and English plural elicitations in Palestinian Arabic heritage-speaking children in the United States. Since dual formation is present in Palestinian Arabic but not English, this kind of investigation could elucidate whether a shift from heritage language (Arabic) to language of environmental dominance (English) affects the ability to access L1 plural formation. An elicited production task was administered to 21 typically developing Palestinian Arabic heritage-speaking children, aged 5;04 to 9;11 years.1 The task was designed to elicit productions of Palestinian Arabic dual and sound and broken plural, and regular and irregular plurals in English. Half the items in each language and category were based on real words and the other half on pseudowords. Parent questionnaires provided background information. Findings revealed systematic effects of language, plural category, and lexicality. Dual production correlated with feminine plural formation in Arabic, and dual appeared to be preferred over masculine and broken plurals. Effects of lexicality across the two languages provided insight into distinct patterns of productivity for plural marking. Although effects of socioeconomic status were not found to be significant, parental education and home exposure to Palestinian Arabic correlated with children’s performance on irregular pluralization. Findings are discussed with a view to informing further studies.
Models of grammar and the outcomes of long-term language contact
Authors: Åfarli Tor A. , Subbarao Karumuri V.
Published: June 2019

In this paper, we lay the groundwork for an explanation of the language mixing outcomes witnessed in the grammar of contemporary Dakkhini, which is the result of long-term diachronic contact between Hindi/Urdu and Telugu. We argue that an Exoskeletal Frame Model is well suited to account both for Dakkhini-type contact outcomes, and for “online” code-switching outcomes. The key element of our model is the assumption of a distinction between an underlying abstract syntactic skeleton and the instantiation of that skeleton by functional and lexical exponents. In the case of Dakkhini, we argue that the syntactic skeleton is mainly provided by Telugu, whereas both the functional and lexical exponents by and large are provided by Hindi/Urdu.
Constructional grounding in emerging complexity
Authors: Rojas-Nieto Cecilia
Published: June 2019

A constructional grounding view to emerging complexity is based on the assumption that components of complex constructions may be used as free clauses before they are integrated into a complex frame. In child language development, constructional grounding has already been tested with positive results for some simple frames: passives and existential constructions. This chapter extends this view to complex sentence formation in early acquisition of Spanish. The analysis focuses on data pointing to a possible grounding relation between main clauses with lexical uses of future complement-taking verbs, and free, insubordinated clause constructions marked by comp-que. Children have access to and may learn these independent frames from parental models. Evidence of constructional grounding is presented: Chronological, distributional and functional results point to a grounding relation between free uses of these components and complex sentences that integrate them. The paper adds to synchronic and diachronic analysis of emerging complexity, and brings developmental evidence on how children integrate earlier and independently learned clausal construction frames.
The predicates of Luiseño clausal adjuncts
Authors: Steele Susan
Published: June 2019

The predicates of Luiseño clausal adjuncts are informationally unique among the predicates of its subordinate clause types in ensuring access to their temporal properties; they are morphologically unique in that this characteristic coexists with properties of form otherwise associated with predicates whose temporal properties are not accessible. The character of this uniqueness is consistent with two facts: (1) A clausal adjunct’s temporality must be determined relative to that of the clause to which it is adjoined; and (2) if the subject of a clausal adjunct is not given internal to the clause, it is determined relative to that of the clause to which it is adjoined.
Adverbial subordinators in Yaqui
Authors: Guerrero Lilián
Published: June 2019

In this paper, I examine the form and function of Yaqui adverbial subordinators. In contrast to relative and complement subordinators, which are always final and bound in Yaqui, adverbial subordinators can occur in both positions, clause-final and clause-initial; the former are bound morphemes, and the latter are free particles. The adverbial markers in initial position differ from any other subordinators in two ways: they have lexical content and do not demand structural dependent features inside the linked unit. Among the final subordinators, -kai and -o are not only the most productive markers in the sample, but they also introduce several adverbial relations including manner, purpose, temporal, concessive and conditional meanings. In fact, these two subordinating morphemes show a consistent, though not obligatory distribution: while -kai is used when the main and dependent subjects are the same, -o often occurs when the subjects are different. The contrasts observed among the adverbial clauses taking final subordinators and those introduced by initial subordinators suggest that the latter may be somewhat new in the Yaqui grammar. As new adverbial clause linkage markers, they adopt the structural features of coordination instead of subordination.
Sarah-Maria Fendt: Driving scientific discovery through collaboration
Authors: Houston Stephanie
Published: June 2019

Sarah-Maria Fendt is a principal investigator at the Flemish Institute for Biotechnology (VIB) in Belgium, and her laboratory focuses on cellular metabolism and metabolic regulation. Recent work from Sarah’s laboratory has shown that pyruvate available in the metastatic niche enables cancer cells to shape their environment and promote metastatic outgrowth. We contacted Sarah to find out more about her journey in science so far.
On the identification of a nonlinear term in a reaction–diffusion equation
Authors: Kaltenbacher Barbara , Rundell William
Published: June 2019

Reaction–diffusion equations are one of the most common partial differential equations used to model physical phenomena. They arise as the combination of two physical processes: a driving forcethat depends on the state variableuand a diffusive mechanism that spreads this effect over a spatial domain. The canonical form is. Application areas include chemical processes, heat flow models and population dynamics. As part of model building, assumptions are made about the form of, and these inevitably contain various physical constants. The direct or forward problem for such equations is now very well developed and understood, especially when the diffusive mechanism is governed by Brownian motion resulting in an equation of parabolic type.

However, our interest lies in the inverse problem of recovering the reaction termnot just at the level of determining a few parameters in a known functional form, but in recovering the complete functional form itself. To achieve this we set up the standard paradigm for the parabolic equation whereuis subject to both given initial and boundary data; then we prescribe overposed data consisting of the solution at a later timeT. For example, in the case of a population model this amounts to census data at a fixed time. Our approach will be two-fold. First we will transform the inverse problem into an equivalent nonlinear mapping from which we seek a fixed point. We will be able to prove important features of this map such as a self-mapping property and give conditions under which it is contractive. Second, we consider the direct map fromf  through the partial differential operator to the overposed data. We will investigate Newton schemes for this case.

Classical, Brownian motion diffusion is not the only version, and in recent decades various anomalous processes have been used to generalize this case. Amongst the most popular is one that replaces the standard time derivative by a subdiffusion process based on a fractional derivative of order. We will also include this model in our analysis. The final section of the paper will show numerical reconstructions that demonstrate the viability of the suggested approaches. This will also include the dependence of the inverse problem on bothTand.
Quasiparticle interference and symmetry of superconducting order parameter in strongly electron-doped iron-based superconductors
Authors: Böker Jakob , Volkov Pavel A , Hirschfeld P J , Eremin Ilya
Published: June 2019

Motivated by recent experimental reports of significant spin–orbit coupling (SOC) and a sign-changing order-parameter in the Li1−x
Fe
x
(OHFe)1−y
Zn
y
Se superconductor with only electron pockets present, we study the possible Cooper-pairing symmetries and their quasiparticle interference (QPI) signatures. We find that each of the resulting states—s-wave, d-wave and helical p-wave—can have a fully gapped density of states consistent with angle-resolved photoemission spectroscopy experiments and, due to SOC, are a mixture of spin singlet and triplet components leading to intra- and inter-band features in the QPI signal. Analyzing predicted QPI patterns we find that only the spin-triplet dominated even parity A
1g
(s-wave) and B
2g
(d-wave) pairing states are consistent with the experimental data. Additionally, we show that these states can indeed be realized in a microscopic model with atomic-like interactions and study their possible signatures in spin-resolved STM experiments.
Quantum cluster approach to the topological invariants in correlated Chern insulators
Authors: Gu Zhao-Long , Li Kai , Li Jian-Xin
Published: June 2019

We detect the topological properties of Chern insulators with strong Coulomb interactions by use of cluster perturbation theory and variational cluster approach. The common scheme in previous studies only involves the calculation of the interacting bulk Chern number within the natural-unit cell by means of the so-called topological Hamiltonian. With close investigations on a prototype model, the half-filled Haldane Hubbard model, which is subject to both periodic and open boundary conditions, we uncover the unexpected failure of this scheme due to the explicit breaking of the translation symmetry. Instead, we assert that the faithful interacting bulk Chern number in the framework of quantum cluster approaches can be computed in the enlarged unit cell, which is free of the fault caused by the explicit translation symmetry breaking and consistent with the interacting bulk-edge correspondence.
Search for decay modes of heavy and superheavy nuclei *
Authors: Soylu A.
Published: June 2019

Spontaneous fission (SF) with a new formula based on a liquid drop model is proposed and used in the calculation of the SF half-lives of heavy and superheavy nuclei (Z= 90–120). The predicted half-lives are in agreement with the experimental SF half-lives. The half-lives of

decay (AD) for the same nuclei are obtained by using the Wentzel-Kramers-Brillouin (WKB) method together with Bohr-Sommerfeld (BS) quantization condition considering the isospin-dependent effects for the cosh potential. The decay modes and branching ratios of superheavy nuclei (Z= 104-118) with experimental decay modes are obtained, and the modes are compared with the experimental ones and with the predictions found in the literature. Although some nuclei have predicted decay modes that are different from their experimental decay modes, decay modes same as the experimental ones are predicted for many nuclei. The SF and AD half-lives, branching ratios, and decay modes are obtained for superheavy nuclei (Z= 119–120) with unknown decay modes and compared with the predictions obtained in a previous study. The present results provide useful information for future experimental studies performed on both the AD and SF of superheavy nuclei.
The prospects of using gravitational waves for constraining the anisotropy of the Universe *
Authors: Zhao Zhi-Chao , Lin Hai-Nan , Chang Zhe
Published: June 2019

The observation of GW150914 gave a new independent measurement of the luminosity distance of a gravitational wave event. In this paper, we constrain the anisotropy of the Universe by using gravitational wave events. We simulate hundreds of events of binary neutron star merger that may be observed by the Einstein Telescope. Full simulation of the production process of gravitational wave data is employed. We find that 200 binary neutron star merging events with the redshift in (0,1) observed by the Einstein Telescope may constrain the anisotropy with an accuracy comparable to that from the Union2.1 supernovae. This result shows that gravitational waves can be a powerful tool for investigating cosmological anisotropy.
Tensile properties of coir and fleece fibers reinforced poly-lactic acid hybrid green composites
Authors: Musyarofah L , Puspita D , Hidayah E , Sujito
Published: June 2019

Hybrid green composite is a combination of several layers of fiber types or laminate that are arranged with a certain number and sequence. This type is used to replace the deficiencies of both types of fibers and can combine the advantages. In this paper, tensile properties of hybrid green composite biodegradable from natural fibers (coir and fleece) and Poly-Lactic Acid (PLA)matrix were investigated. The synthesis of composite material was carried out with five samples i.e coir, fleece, 5/15% mass of coir and fleece, 10/10% mass of coir and fleece and 15/5% mass of coir and fleece reinforced PLA biodegradable matrix were synthesized using hot press molding at temperature of 170°C pressure of 10MPa and time molding of 10 minutes. Characterization of tensile strength and modulus of elasticity of the material using the Tensile Test Machine ASTM D 638. The result show that the tensile properties (tensile strength and modulus of elasticity) of the sample affected by addition of fiber fraction. The result confirmed with the result of morphology test by SEM (Scanning Electron Microscope).
Characterization and effect of atmospheric corona plasma on grey knit polyester fabric
Authors: Muhlisin Z , Hasan S N , Rizki U N , Tajibnafis A S , Arianto F
Published: June 2019

The use of chemical compounds in dyeing is still dominant. This results in the redundant use of water for the washing. Therefore, there needs to be a research on an alternative method. This research is aimed at understanding the effect of both positive and negative corona plasma irradiations on fabric. It is expected that characteristics of voltage, current, and electrode spacing, as well as ion mobility from the corona plasma will be known, both for with and without grey polyester knit fabric. Other than that, dampness characteristics of the grey polyester knit fabric will also be known. Plasma discharge is generated using point-plane electrode configuration connected to a high voltage DC power supply. The number of point electrodes is 100. Meanwhile, irradiation on the fabric is performed by putting the grey polyester knit on top of the plane electrode. Characterization was then carried out by varying the voltage, spacing of both point and plane electrodes, with and without the fabric. Other than that, variation was also made for the duration of grey polyester knit fabric irradiation. The next step was water drop test to observe 1 mL water absorption on the grey polyester knit. Results show that adding potential difference increases the current of corona spark plasma discharge for both positive and negative current corona discharges. The same case was also observed when the plasma discharge was irradiated on the plane electrode, either with or without the grey polyester knit fabric. The presence of grey polyester knit altered discharge mobility in that the small spacing of the fabric increases mobility for both negative and positive corona discharge. Hence, the further the electrodes spacing, the less mobile charge particles become. Results of water drop test show that longer irradiation on the fabric speeds up water absorption in the grey polyester knit fabric, both for positive and negative corona irradiations.
The modeling of 80 mm diameter cross flow turbine runner for mini/microhydro environmentally friendly power plant
Authors: Purwanto  , Budiyono  , Hermawan
Published: June 2019

Indonesian river’s potentials on Mini or Microhydro fuelled power plants has not been maximally explored despite its big potentials of utilization. The 500 MW energy potentials of Mini or Microhydro throughout Indonesia have only reached the point of 4.5% while National Energy Management Blueprint in 2050 targeted 31% of renewable energy (RE) is coming from Micro hydro energy. The applications of 80 mm diameter cross flow turbine in a household scale have drawn an increase in its experience with 450 Watts of power produced through small discharge of 20 liters/second and 3-meter head. Cross flow turbines testing in 130 mm length and 80 mm diameter conducted using Mini / micro hydropower Plant in environmentally friendly power House drum. Lower investment and operational design cost also to be made on its aim to reach community group or individual segments.
Analysis of calcium element in concrete using laser-induced breakdown spectroscopy
Authors: Hartadi B S , Khumaeni A
Published: June 2019

One of the spectroscopy method, which can determine constituent in material, is Laser-Induced Breakdown Spectroscopy (LIBS). LIBS is an atomic emission method that uses radiation pulses from the high energy laser. LIBS allows the detection of spectral lines of elements present in the excited sample. In this present research, a pulse Nd: YAG laser with 1064 nm wavelength was used in LIBS system to the analysis of concrete elements. Spectrum analysis of calcium element in concrete was performed to understand the characteristics of generated laser plasma. Characteristics of laser plasma were shown through energy and pulse repetition rate laser variations. Using the higher energy laser, the larger plasma diameter was made. Furthermore, the graphs show increment in intensity and peaks, which have better sharpness. The laser repetition rate does not affect the size of the plasma, but the greater frequency of laser shots cause the lower emission intensity.
DDBD ozone plasma reactor generation: the proper dose for medical applications
Authors: Azam M , Restiwijaya M , Zain A Z , Sumariyah S. , Setiawati E , Richardina V , Hendrini A R , Dayana B , Kinandana A W , Arianto F , Bintang K N , Putri Y , Valas Y K , Nur M
Published: June 2019

Double Dielectric Barrier Discharge (DDBD) ozone plasma reactor generation are presented in this paper. The generation of this reactor generates ozone concentration which can be arranged upon the proper dose for medical applications. AC high voltage is applied to the range of 0-3 kV and the frequency of 50 Hz. Pure oxygen gas was piped into the DDBD reactor with flow rate variations of 2, 4 and 6 L/min. The results showed that current as a function of voltage where the current is increased with the increasing of voltage. Ozone productivity is shown by the significant increase of current. Ozone concentration is increasing as the increase of the voltage provided, but rather the concentration of ozone is decreasing as the increasing of flow rate. The Ozone capacity is affected by ozone concentration and flow rate, and can be used to determine the ozone dose. The proper dose of ozone can be ozone therapy for various kinds of diseases.
Richardson number model for turbulence motion analysis around airport runway
Authors: Gernowo R , Saputro H D , Setiawan A , Adi K , Widodo A P
Published: June 2019

Natural disasters now often occur in Indonesia, especially regarding atmospheric anomalies. The models of forecasting based convective cloud growth events are necessary to understand the anomaly symptoms of the atmosphere. This research solves a problem, we propose a method that can analyze the convective cloud with Weather Research and Forecasting (WRF) model. The potential of turbulence then needed turbulence index like Richardson Number (Ri). The Richardson Number Index (Ri) takes into account the value of Vertical Wind Shear and the stability of the air. This causes Ri to be considered ideal for describing Clear Air Turbulence (CAT). In this study, the negative Ri results tend to experience mild turbulence due to atmospheric conditions with Ri < 0.25 has a great chance of turbulence.
Analysis of noise levels caused by various types of trains
Authors: Margiantono A
Published: June 2019

A passing train is a source of the noise. Noisy is an unwanted sound from a business or activity at a certain level and time that can cause public health problems and environmental comfort. Noise is one of the problems for environmental health. According to the World Health Organization (WHO), in 2000 there were 250 million (4.2%) of the world population experiencing hearing loss due to noise and around 140 million (50%) were in Asia. A passing train is a source of the noise. In this study the measurement of daytime noise level (Lsm) and momentary noise level (Lek) at several points along the Cirebon-Cepu railway. The daytime noise level (Lsm) is measured for 24 hours for each point while the instantaneous noise level is measured from 5 meters, 10 meters, 15 meters and 20 meters from the rail. Noise level at night (Lsm) and momentary noise level (Lek) which is measured is the noise level caused by various types of trains that are passing. From the research that has been done, the noise level in some places has exceeded the Threshold Value. The highest noise level of Nighttime at Cirebon Prujakan Station is 78 dBA for Special areas, while the biggest increase in momentary noise is caused by a freight train of 30 dBA in Pulosaren Settlement.
3D Gravity Data Modelling for Determining a Subsurface structure of The SDP Geothermal Field
Authors: Meilasandi T , Sugianto A , Indriana R D , Harmoko U
Published: June 2019

The SDP geothermal research area geographically located in eastern Indonesia where there are geothermal manifestations of hot springs. 3D modeling and vertical-horizontal gradient analysis are used to determine the presence of subsurface structures of the study area. Separation of complete Bouguer anomaly data to obtain regional and residual anomalies has been done by upward continuation. The results of the horizontal and vertical gradients indicate that the presence of the geothermal manifestation of MAP 1 hot spring is controlled by the presence of trending northwest-to-southeast fault. We interpret the emergence of manifestations due to the presence of a permeable zone in the form of the fault structure. 3D modeling shows the existence of alluvium sediment, sedimentary rocks, limestones, ultrabasas (peridotite), granite, metagranite, gneiss and the presence of trending northwest trending to the southeast fault.
Identification of the geological structure on the NPR Geothermal Area based on 3D Modeling Gravity Data
Authors: Rizaldi N P , Dewi R , Indriana R D , Harmoko U
Published: June 2019

This research does to know the geological structure of the NPR geothermal area. We applied a gradient analysis and 3D modelling of gravity data based on bouguer anomaly, the additional method of euler deconvolution analysis to estimate the depth of the geological structure. The data consist of 325 points which was measured by PSDMBP team, Bandung. Based on the the result of horizontal gradien which is located at the maximum value and controlled by of vertical derivative which is located is at zero, we interpret that the appearance of a goethermal manifestation such as fumarole and hot spring controlled by the presence of fault. The average depth fault of Euler Deconvolution is < 288.5 meters to >480.2 meters. 3D modelling results indicates volcanic breksi stone, lava andesitand tuff and the presence of fault with some changing significantly rocks densities in the southwest and northwest to southeast research area.
Membrane technology in air pollution control: prospect and challenge
Authors: Komaladewi A.A.I.A.S. , Aryanti P.T.P. , Subagia I D.G.A. , Wenten I G.
Published: June 2019

Rapid growth in environmental awareness raised the strict regulations on air pollution control and led to great developments in air filtration or cleaning technologies. The membrane is one of the promising technologies for air filtration due to its high efficiency, low cost, and easy to scale-up. Two types of air filtration membranes have been used to provide high efficiencies in contaminant removal, namely electro-spun fibrous and microporous polymeric membranes. The fibrous membranes composed of randomly oriented fibers, either micro-or nano-fiber, and have been widely used to remove fine particles, such as aerosols. Meanwhile, the microporous membranes have a pore size that can remove both particulate and molecular, such as toxic gases. This paper reviews the role of membrane technologies in air pollution control. The performances of the membranes are presented comprehensively. Besides, the developments of the membranes to improve the filtration efficiency and reduce air-flow resistance are also discussed.
Nutrition Measurement of “Grombyang” – unique dishes of Pemalang, Central Java Province, Indonesia
Authors: Saraswati L D , Arifan F , Muhammad F , Yuliana RAD , Nissa C
Published: June 2019

Grombyang is one of the typical food from Pemalang Central Java which sold freshly in restaurant or food stall. To marketed commercially outside Pemalang, several parts of grombyang seasoning was made in instant form. The study aimed to analyze the content of nutrients (protein, and fat), and rancidity test contained in each grombyang seasoning which is dry galangal, fried onion, coconut srundeng, a mix of tauco, kluwek and palm sugar. Another aim was to analyze the number of bacteria in grombyang seasoning. The protein test used Kjeldahl method, and fat test used Soxhletasi method. While the bacteria test using Total Plate Number (ALT) method of bacteria and rancidity test using Thio Barbiturate Acid (TBA) method. The results showed that the protein content of each spice component such as srundeng coconut grombyang was 10.8%, petis 12.4%, fried onion 25.9%, palm sugar (aren) 12.3%. Fat content in spice component of grombyang for srundeng kelapa grombyang 41.2%, 50.7%, petis 12.3%, fried onion 24.9%, aren 51.5%. Total Plate Count Test (ALT) of the bacteria showed that total bacteria found in spice grombyang was 12.1 × 105 CFU/ml. It can be concluded that the highest protein content found in fried onions and the highest fat content found in palm sugar. Also, spice Grombyang had the number of microbes that were in the standard range of BPOM No. 16 of 2016 (10 × 108 - 10 × 109 CFU/ml).
Nutrition Analysis of "Ogel-ogel" –typical snack originally from Pemalang, Central Java Province, Indonesia
Authors: Saraswati L D , Arifan F , Muhammad F , Arumavriante D , Nissa C
Published: June 2019

Ogel-ogel is a unique food in Pemalang with a crispy textured within a distinctive cheese flavor. Ogel-ogel made from glutinous rice flour mixed with egg, cheese, sugar, and salt. Then the dough is printed like a caterpillar writhing using a special tool and then fried. The study aimed to examine the nutrition content and the total amount of bacteria inogel-ogel. The test included nutritional content test such as carbohydrate content test used luff schrooll method, protein used kjehdahl method, fat used sokletasi method, rancid used TBA (Thiobarbituric Acid) method with interval 5 days for 20 days, microbiology test used ALT method (Total Plate Count) with PCA media (Plate Count Agar), free fatty acid test by titration method used NaOH. The test results showed that ogel-ogelcontain carbohydrate equal to 11.1%, protein 13%, fat 47%, (the result of rancidity), amount of bacteria as much as 1.13 × 104 CFU/ml, and free fatty acid test result. Based on the test, it can be concluded that Ogel-ogel is safe to be consumed because it is in the standard range of BPOM No. 16 of 2016 which is in the range 107-108 CFU/ml for the category of typical bakery products (sweet, salty and savory).
Identification and determination of phenolic acids content in mango “golek” leaves ethanol extract
Authors: Khasan A , Fachriyah E , Kusrini D
Published: June 2019

Ethanol extract from mango “golek” leaves (Mangifera indica L) was obtained by maceration in ethanol 96%. Phenolic acid was isolated from the extract by hydrolysis with and without a hydrolyzing agent (TH). Two different hydrolyzing agents were used separately, i.e., sulfuric acid (HA) and sodium hydroxide (HB). Identification of phenolic acid was made with TLC and High-performance liquid chromatography (HPLC). Determination of phenolic acid content was carried out using TLC Scanner. Standard phenolic acid was used as a control. Phenolic acid compounds were obtained in the HA, HB and TH isolate namely gallic acid. The total gallic acid content was 35.88% consisting of HA, HB and TH fraction of 3.46%; 12.42%; 19.98%.
Chemical oxygen demand (COD) degradation of herbal, tofu and fertilizer wastewater using UV/Ozone oxidation methods
Authors: Hadiyanto  , Silviana  , PAdetya N , Pratiwi M E , Aripratama A D
Published: June 2019

The herbal, tofu and fertilizer industries contribute considerable waste. Unprocessed waste disposal can cause environmental pollution. The waste contains chemical oxygen demands (COD), and organic substances can be degraded by Advanced Oxidation Processes (AOPs) degradation method. The process of AOPs in this study used a combination of UV rays and ozone to produce hydroxyl radicals. This study was aimed to investigate the effect of UV, Ozone and UV-Ozone methods on COD degradation of herbal waste, tofu, and fertilizer. The result showed that the optimum degradation was obtained at experiment by using UV/ozone method. The COD degradation at tofu wastewater was from 1308 to 942 ppm, herbal wastewater was from 1011 to 414 ppm, and fertilizer wastewater was from 510 to 89 ppm by the use of 4 hours UV-Ozone method.
Routh-hurwitz criterion and bifurcation method for stability analysis of tuberculosis transmission model
Authors: Mahardika R , Widowati  , Sumanto YD
Published: June 2019

Tuberculosis is an infectious disease; it caused by Mycobacterium tuberculosis. In this paper, we discuss how to use the Routh-Hurwitz stability criterion to analyze the stability of disease free of the tuberculosis transmission model. From this method, can be found the number of roots of the characteristic polynomial (eigenvalues) with positive real parts is equal to the number of changes in sign of the first column of the Routh array. If all of the eigenvalues are negative, then the model is stable. While the bifurcation method is used to analyze the stability of the endemic equilibrium point of the tuberculosis transmission, the endemic equilibrium point is locally asymptotically stable if reproduction number greater than one and additional parameters requirement that bifurcation met. Finally, numerical simulations are demonstrated to verify the used method.
Application of the Crystallographic tiling to Increase Competitiveness of the Sand Sediments
Authors: Kartono  , Utomo R H S , Sasongko P S , Udjiani T
Published: June 2019

Mount Merapi eruption in 2010 resulted in the environmental damage and disruption of socio-economic life of the society. Post-eruption cold lava floods carry the volcanic sedimentary materials in the form of sand and stone are very abundant. Unfortunately, the abundance of these natural resources is exploited at low prices. The problem is how to manage the sedimentation to have high economic value. The adaptation efforts to manage this sediment need to be done to immediately restore the social economic slump of society. The sediment management model that can improve economic value and competitiveness needs to be done by maintaining the sustainability of its natural resources. This article contains the results of research on the application of crystallographic tiling to improve the economic value and competitiveness of sand sediments. Three types of sediment-based products are successfully made of tiles, rosters, and paving.
On total edge irregularity strength of dove tail graph with pendant vertices and its subdivision
Authors: Nurdini E , Rosyida I
Published: June 2019

Given a graph G(V, E) with a non-empty set V of vertices and a set E of edges. A total labelling λ: V ∪ E → { 1, 2,. . ., k} is called an edge irregular total labelling if the weight of every edge is distinct. The weight of an edge e, under the total labelling λ, is the sum of label of edge e and all labels of vertices that are incident to e. In other words, wt(xy) = λ(xy) + λ(x) + λ(y). The total edge irregularity strength of G, denoted by tes(G) is the minimum k used to label graph G with the edge irregular total labelling. In this paper, authors investigate the total edge irregularity strength of Dove tail graph with n pendant vertices

D
n
n

, and the subdivision of

D
n
n

which is denoted as

SD
n
n

. The results of this research are

t
e
s
(

D
n
n

)
=

⌈

3
n
+
1

3

⌉

and

t
e
s
(

SD
n
n

)
=

⌈

6
n

3

⌉

.
Analysis of mathematical model of HIV-1 infection of CD4+ T cells with CTL response and antiretroviral treatment
Authors: Sutimin  , Sunarsih  , Thahjana Heru
Published: June 2019

A mathematical model is developed to capture the spread of HIV-1 infection within host cells caused by the contact of cell to cell and CTL response. In this paper, we propose a mathematical model of HIV-1 infection in CD4+T cells taking into account viral transmission from cell to cell and CTL response. The HIV transmission from cell to cell is one of the main factor in the spread of HIV infection and CTL response determines viral set point. We analyse the model to investigate the existence and stability of the equilibria. We analyse the local stability of disease free equilibrium by linearization, while the global stability of endemic equilibrium of the system by constructing Lyapunov function. Numerical simulations are presented to find the effectiveness of antiretroviral treatment in different scenarios and to the implication of CTL response in controlling the progression of HIV-1 infection.
Frank copula on value at risk (VaR) of the construction of bivariate portfolio (Case Study: stocks of companies awarded with the IDX top ten blue with stock period of 20 october 2014 to 28 february 2018)
Authors: Handini J A , Maruddani D A I , Safitri D
Published: June 2019

Value at Risk (VaR) is a method to estimate the worst risk of an investment. The stock data is one of the financial time series data which often has high volatility which causes inconstant residual variance. The combination between several stocks in the portfolio makes the assumption of residual normality of the joint distribution model difficult to fulfill. The previous research on VaR by Sofiana in 2011 [3] and Hermansyah in 2017 [4] found that VaR value was reliable only for the data fulfilling normality assumption. Therefore, it is necessary to estimate VaR without ignoring the presence of heteroscedasticity and unfulfilled residual normality of the joint distribution model. This research aims to measure the VaR using Frank Copula-GARCH method with stock return data of BBRI, TLKM and UNVR for the period of 20 October 2014 to 28 February 2018. The research found that a pair of bivariate portfolio was TLKM and UNVR because they had the highest residual correlation value of Rho Spearman of ρ = 0.3204. Based on the data generation obtained using Monte Carlo simulation, the results of the VaR were -0.027883; -0.01886425; -0.01403 with confidence level at 99%, 95%, and 90% respectively.
Modeling of red onion production in Central Java using hybrid ARIMA-ANFIS
Authors: Diarsih I H , Tarno  , Rusgiyono A
Published: June 2019

Red onion is one of the strategic horticulture commodities in Indonesia considering its function as the main ingredients of the basic ingredients of Indonesian food. For increasing production to supply national necessary, Central Java as the main center of red onion production should be able to predict the production of several periods to maintain the balance of national production. The purpose of this research is to get the best model to forecast the production of red onion in Central Java by ARIMA, ANFIS, and hybrid ARIMA-ANFIS method. The smallest RMSE and AIC values measure model accuracy. The results show that the best model for modeling red onion production in Central Java is obtained by hybrid ARIMA - ANFIS model which is a combination between SARIMA ([2], 1, [12]) and residual ARIMA using ANFIS model with input et,1, et,2
on the grid partition technique, gbell membership function, and membership number of 2 that produce RMSE 12033 and AIC 21.6634. While ARIMA model yield RMSE 13301,24 and AIC 21,89807 with violation of assumption. And the ANFIS model produces RMSE 14832 and AIC 22,0777. It shows that ARIMA-ANFIS hybrid method is better than ARIMA and ANFIS.
Comparing Merton model and Gram-Charlier model to capture skewness and kurtosis on bond performance
Authors: Abdurakhman  , Maruddani D A I
Published: June 2019

The existence of skewness and kurtosis in finance data distribution is as a generalization of the normal density. Non-normal skewness and kurtosis of underlying asset of bond issuer significantly contribute to the phenomenon of volatility smile. Merton jump diffusion model is one of the first beyond Black-Scholes model in the sense that it tries to capture the effect of skewness and kurtosis of the asset prices density by a simple addition of a compound Poisson jump process. Another approach to consider the effect of skewness and kurtosis in asset prices for bond valuation is the Gram-Charlier (G-C) expansion. Hermite polynomial is used to get an expansion of the probability distribution in G-C method. In this paper we compare Merton Jump Diffusion (MJD) Model and G-C model in the term of equity and default probability. The result showed that G-C model is more consistent than MJD model when the skewness and kurtosis are taken into account.
Predicting currency crisis in Indonesia based on real output and Indonesia Composite Index (ICI) indicators
Authors: Sugiyanto  , Zukhronah E , Slamet I , Setianingrum M
Published: June 2019

The currency crisis that occurred in the middle of 1997, 1998 and 4th quarter of 2008 was caused by disturbances in the currency system. When there is disturbance in the system then the cause indicators will experience fluctuations and changes in conditions. High fluctuation can be modeled using volatility model, while the changes in condition can be modeled using Markov switching model. Therefore, combination of volatility and Markov switching models is very appropriate to explain the crisis. In this paper, we use real output and ICI indicators on the period of January 1990 until December 2016 to explain the crisis as well as to forecast the possibility of an impending crisis. The results show that the appropriate model is ARCH (1) and Markov switching with 3 states, called SWARCH (3,1) model. This model can catch the crisis that happened in 1998 and 1999 for real output indicator. Meanwhile ICI indicator can explain the crisis in August to December 1997, 1998 and September to December 2008. Based on SWARCH (3,1) model, it can be predicted that Indonesia does not experience currency crisis in one year later.
Gold price modeling in Indonesia using ARFIMA method
Authors: Safitri D , Mustafid  , Ispriyanti D , Sugito
Published: June 2019

Gold investment is the best choice to control finance. Gold is easy to resell if there is a financial need at the unpredictable moment. The data of gold price in Indonesia is a long-term memory data series or a time series data that has a long-term dependency. ARFIMA model is an appropriate model for such long-term memory data series since ARFIMA model has a different parameter value (d) of integer while the value of d in ARFIMA model is non-integer value due to the long-term memory or the long-term dependency. This research aims to obtain the best ARFIMA model of gold price data in Indonesia. It is obtained the value of ARFIMA model (1,d,[3]) with d=1,05716 as the best model.
GARCH-family for measuring price fluctuation risk of harvested dry grain in Pemalang district
Authors: Rahmawati R , Rusgiyono A , Hoyyi A , Maruddani D A I
Published: June 2019

Value at Risk (VaR) is a measurement of the value of a risk that estimates the maximum potential loss that may occur in the future within a certain period and a certain level of trust. VaR is widely used in financial data, but has not received the same treatment in agriculture. The risks associated with price fluctuations are one of the most obvious and well-studied aspects of price risk management. In this study, analyze Value at Risk (VaR) based on the GARCH family volatility model for agricultural commodities, especially harvested dry grain at 95% confidence intervals. This study uses the price of harvested unhulled rice at the producer level of Pemalang District from August 2015 to July 2018. Based on the nature of the data, the appropriate model used is the MA (1) – GARCH (1,1) model. The results of this study indicate that the longer the time to invest, the greater the risk it creates.