bluuebunny/crossref_metadata_2025 huggingface dataset:
Application of Trojan Horse Method to radioactive ion beams induced reactions
Authors: Gulino Marisa , Cherubini Silvio , Kubono Shigeru , Lamia Livio , Cognata Marco La , Pizzone Rosario Gianluca , Yamaguchi Hidetoshi , Hayakawa Seya , Wakabayashi Yasuo , Iwasa Naohito , Kato Seigo , Komatsubara Tetsuro , Teranishi Takashi , Coc Alain , de Séréville Nicolas , Hammache Fairouz , Kiss Gabor , Bishop Shawn , Binh Dam Nguyen , Roeder Brian , Trache Livius , Tribble Robert , Spitaleri Claudio
Published: September 2020

In the last decades, many indirect methods have been developed to measure the cross section of nuclear reactions at the low energies interesting in many astrophysical scenarios. The Trojan Horse Method uses a three body reaction, involving by a strong clusterized nucleus, to infer information about a two body reaction of interest, selecting the events that proceed through the quasi-free reaction mechanism. To reconstruct the reaction kinematic and to identify the useful reaction mechanism, the energy and angle of at least two of the three outgoing particles must be carefully measured. Moreover, enough statistics is required, as the quasi-free events usually represent just a small fraction of the acquired statistic.

These requirements hardly match with the typical characteristics of radioactive ion beams: low intensity, large divergence and possible presence of contaminants. For this reason, only recently the Trojan Horse Method has been applied to study reactions induced by radioactive beams. This application gives also the opportunity to measure cross section of neutron induced reactions on radioactive isotopes, even if they have a short lifetime.

In the following some results obtained in the study of the reactions 18F(p,α)15O and 18F(n,α)15N will be presented.
Efficency of a HPGe extended range detector for determination of 7Be concentration in air filters
Authors: López-López Ó. E. , Domínguez-García R. , Cabral-Lares R. M. , Canche-Tello J. , Montero-Cabrera M. E.
Published: September 2020

Using the GEANT4 Monte Carlo simulation software, the efficiency of the HPGe extended range detector of the Environmental Radiological Surveillance Laboratory of CIMAV was modeled. A 137Cs certified point source was employed to determine the experimental gamma efficiency in the desired geometry for the energy of 662 keV. The resulting value was compared with the theoretical efficiency obtained by the Monte Carlo simulation. The results of the simulation were consistent with the experimental one. The same method was applied to calculate the theoretical efficiency in the same detector for borosilicate filters in an extended geometry. The energy then was 477 keV, of the gamma quanta from 7Be, to determine its concentration in air. This efficiency value was applied for air sampling in the city of Chihuahua.
Weak nuclear processes in the quest for elusive particles
Authors: Moreno O.
Published: September 2020

Nuclear processes involving the weak interaction can be used to extract information on some elusive properties of particles. Remarkably useful to this goal is parity-violating elastic electron scattering off nuclei, which can be used to determine accurately the distribution of neutrons within the nucleus, including information on the neutron skin that can be related to the structure of neutron stars. It can also be used to determine the content of strange quark-antiquark virtual pairs in nucleons and can help in evaluating accurately Standard Model parameters or higher-order radiative corrections. To achieve these goals it is essential keeping under control the theoretical uncertainties that arise in modelling some confounding nuclear effects, such as isospin mixing or Coulomb distortion of electron wave functions.

The paradigm of an evasive particle in current physics is dark matter. Sterile neutrinos are hypothetical dark matter candidates that could be produced in nuclear beta decays leaving a signal in the energy spectrum of the emitted charged lepton. They can also be coherently scattered by nuclei through an indirect weak neutral interaction, whose cross section can be written in terms of elastic electron scattering observables. We study the probability of these production and detection mechanisms using experimental and cosmological constraints on the sterile neutrino properties.

The coherent scattering cross section off nuclei has also been analyzed for the Standard Model neutrinos, being a notably elusive process that has been recently measured for the first time and that can be used for Standard Model tests or for nuclear structure studies in ways analogous to parity-violating electron scattering.
From Halo Effective Field Theory to the study of breakup and transfer reactions: reliably probing the halo structure of 11Be and 15C
Authors: Moschini L , Yang J , Capel P
Published: September 2020

In this work we study one-neutron halo nuclei, and in particular 11Be and 15C, which can be seen as an inert core of 10Be or 14C plus a loosely bound neutron. During the last decades several transfer and breakup reactions involving these systems have been measured on different targets and energies. We study these processes using one single structure model for each nucleus applying the halo effective field theory (Halo EFT) at next-to-leading order NLO. The main parameters of this EFT are adjusted on nuclear-structure data and/or ab initio predictions. We model the transfer reaction within the Adiabatic Distorted Wave Approximation (ADWA) and the breakup process applying an eikonal model with a consistent treatment of nuclear and Coulomb interactions at all orders. At high energy, our model includes a proper treatment of special relativity Our theoretical calculations are in good agreement with experiment for a variety of reaction observables, thus assessing the robustness of the structure model provided for these nuclei. This new idea enables us also to reliably estimate the nuclear-structure observables that actually affect the reaction process, and hence that can be inferred from such measurements.
Heavy Ω
c
and Ω
b
baryons in the quark model
Authors: Ortiz-Pacheco E. , Bijker R. , García-Tecocoatzi H. , Giachino A. , Santopinto E.
Published: September 2020

In this contribution, we present a study of ground- and excited-state Ω
c
and Ω
b
baryons consisting of two strange quarks and a heavy charm or bottom quark. An analysis in the quark model shows that the recently observed excited Ω
c
and Ω
b
states can be interpreted in terms of λ-mode excitations.
Fusion studies at around the barrier energies: A case 10B+27Al system
Authors: Sharma Vijay R. , Aguilera E. F. , Amador-Valenzuela P. , Morales-Rivera J. C. , Martinez Quiroz E. , Lizcano D.
Published: September 2020

Nuclear Reactions around the Coulomb barrier are complex in nature due to the existence of non-fusion channels at these energies, and offers excellent opportunities to explore several dynamical effects as well as the sub-lime effects of nuclear structure. Some of the outstanding issues related to nuclear reactions at these energies are: the role of nucleon transfer events in the manipulation of fusion cross-section, and pairing correlations. As such, an experiment was performed to carry out some conclusive measurements for the 10B+27Al system at energies ≈ 1.3 - 1.7 MeV/A. The experiment based on γ-ray spectroscopy has been performed at the Tandem Laboratory, National Institute of Nuclear Investigation, Mexico, to obtain the fusion cross-sections at several beam energies. In the present paper, some experimental details, analysis and preliminary results are presented.
On the possible virtual state nature of the LHCb Pc
(4312)+ signal
Authors: Silva-Castro J. A.
Published: September 2020

In this contribution we study the nature of the new Pc
(4312)+ signal reported by LHCb collaboration in the J/ψ p spectrum. We use S-matrix principles to perform a minimum-bias analysis of the data, focusing on the analytic properties that can be related to the microscopic origin of the Pc
(4312)+ peak. Using the scattering length approximation we find evidence for interpretation of the signal as a virtual state generated by the attractive effect of the

Σ

c

+

D

¯

0

channel opening.
Cooling demand in integrated assessment models: a methodological review
Authors: Colelli Francesco Pietro , Cian Enrica De
Published: September 2020

The paper systematically reviews and compares 88 scenarios of energy demand in commercial and residential buildings that include the additional energy use or savings induced by thermal adaptation in heating and cooling needs at global level. The resulting studies are grouped in a novel classification that makes it possible to systematically understand why the energy projections of integrated assessment models vary depending on how changes in climatic conditions and the associated adaptation needs are modeled. Projections underestimate the energy demand of the building sector when it is driven only by income, population, unchanging climatic conditions and their associated adaptation needs. Across the studies reviewed, already by 2050 climate change will induce a median 30% (90%) percentage variation of a building’s energy demand for cooling and a median −8% (−24%) percentage variation for heating, leading to a 2% (13%) increase when cooling and heating are combined, under the Representative Concentration Pathway 1.9 (8.5). The results underscore that models lacking extensive margin adjustments, and models that focus on residential demand, highly underestimate the additional cooling needs of the building sector. Topics that deserve further investigation regard improving the characterization of adopting energy-using goods that provide thermal adaptation services and better articulating the heterogeneous needs across sectors.
Effect of calcium and enzyme involvement to survival rate and development of the early stage zoea Portunus pelagicus
Authors: Permadi S , Pratama I S , Suryaningtyas I T , Jasmadi
Published: September 2020

The early stage of blue swimming crab (Portunus pelagicus) zoea requires calcium for calcification after molting which can be drawn from water and its diet. However, the digestive system of the early stages of the larvae is still not perfect, so the ability to digest food is limited. Calcium and enzyme inclusion in its formulated diet is important to aid the calcification process. Therefore, in this study, the effect of calcium and enzyme inclusion to survival rate and development of the zoea were examined. Zoeas were fed with nauplii Artemia and three levels of calcium Kalzana-D without enzyme Enzyplex inclusion (At, Bt and Ct) and with enzyme Enzyplex inclusion (AtE, BtE and CtE). There were three replicates in each treatment that had 100 zoeas in 2-L plastic tube on 30°C water bath. The result revealed that 50 mg calcium with enzyme involvement supported the early stage of zoea to molt and develop to the next stage. In addition, calcium inclusion with or without enzyme involvement promoted survival rate of the zoea.
The effect of different temperature on the stability of phycocyanin on microcapsule Spirulina platensis
Authors: Purnama FNW , Agustini TW , Kurniasih RA
Published: September 2020

Phycocyanin as antioxidants is a special pigment in Spirulina platensis that belongs to the temperature-sensitive. Microencapsulation of S. platensis is needed to maintain the phycocyanin content. The aimed of this study was to determine the effect of microencapsulation and different temperatures (40 °C and 100 °C) process to phycocyanin degradation, the relative concentration (CR) of phycocyanin, the antioxidant degradation and total color different (TCD) and its interaction. The result shown the microencapsulation process could increase the stability of phycocyanin against temperature. The higher heating processes cause an increase in phycocyanin degradation. The interaction between high temperature treatment and microencapsulation produced the highest value of phycocyanin degradation (57.23±0.16%) and antioxidant degradation (46.85±0.04%), namely S. platensis powder (without microencapsulation) with a temperature of 100 °C, while the highest of phycocyanin CR (95.72±0.13%) at S. platensis microcapsules with a temperature of 40 °C. However, microencapsulation gave a higher TCD value of S. platensis caused by the Maillard reaction.
Quality deterioration kinetics and shelf-life estimation of fish koya
Authors: Anandito RBK , Kawiji  , Purnamayati L , Putri AMS
Published: September 2020

This study aimed to determine the quality deterioration kinetics of fish Koya and to estimate its shelf-life. Koya is a savory powder and usually added to traditional Indonesian foods such as Soto and noodles. In general, Koya is made from crushed shrimp crackers and fried garlic. In this study, Koya was made from red tilapia and tempeh flour, then packed in metalized plastic. The three formulas in this study were N1 (60% tempeh flour : 40% red tilapia fillets), N2 (50% tempeh flour : 50% red tilapia fillets), and N3 (40% tempeh flour : 60% red tilapia fillets). The Koya then stored at 35°C, 45°C, and 55°C for 28 days. Sensory quality and Thiobarbituric Acid (TBA) values during storage were observed every seven days. The sensory evaluation was conducted using multiple comparisons test. Shelf-life of fish Koya was determined at 30°C (room temperature) using Accelerated Shelf Life Test (ASLT) with the Arrhenius model. The results showed that aroma was the first parameter that decreased compared to other parameters. The zero-order equations were suitable to describe the decreased aroma quality of N1, N2, and N3. The activation energy of decreased quality for N1, N2, and N3 were 29.64 kJ/mol.K, 24.79 kJ/mol.K, and 22.43 kJ/mol.K, respectively. The shelf-life estimation for N1, N2, and N3 at room temperature was 131 days, 109 days, and 108 days, respectively.
Thermal degradation kinetic study of Pangasius fish oil
Authors: Purnamayati L , Kurniasih R A
Published: September 2020

Pangasius fish oil is rich in unsaturated fatty acids that are beneficial for health. However, unsaturated fatty acids are easy degraded due to temperatures and oxidation. This study aimed to determine the changes in the quality of pangasius fish oil during heating and the result of oxidation value based on activation energy. Pangasius fish oil was heated at three different temperatures which were 70°C, 80°C, and 90°C for 15, 30, 45, 60, and 75 min. The observation includes peroxide value, TBA value, FFA, and fatty acid profiles. The results showed that higher temperatures and prolonged heating increased the peroxide value, TBA value, and FFA. The rate of quality degradation in pangasius fish oil proved by each activation energy of PV 111.433 kJ/mol, TBA 7.368 kJ/mol, and FFA 83.971 kJ/mol and unsaturated fatty acid, especially linolenic acid decreased. It showed that the oxidation during heating reduced the quality of pangasius fish oil.
The characteristics of nanocalcium flavor powder made from waste stewed water of swimming crab Portunus pelagicus L.
Authors: Wijayanti I , Dewi E N
Published: September 2020

The waste stewed water of swimming crab contains volatile compounds, proteins, and minerals, therefore it has the potential to be a food flavor as well as a food additive. Flavor with addition of nanocalcium powder is limited availability and a good sources as the calcium enhancer flavor. This study aimed to determine the effect of adding nanocalcium from tilapia bones and maltodextrin combinations on crab flavor powder’s characteristics. The filler materials used 15% combination which were nanocalcium and maltodextrin as follow 0% nanocalcium and maltodextrin 15% (A); 1.5% nanocalcium and maltodextrin 13.5% (B); 3% nanocalcium and maltodextrin 12% (C); 4.5% nanocalcium and maltodextrin 10.5% (D). The test parameters that were used such as solubility, yield, moisture content, protein content, glutamic acid, calcium content, particle size analyzer, and hedonic scale. The results showed that treatment of different filler combinations had a significant effect on solubility, water content, protein content, Aw, glutamic acid and calcium levels (P <0.05). The best treatment showed in combination of 3% nanocalcium and 12% maltodextrin (C), having the highest solubility of 98.27%; low water content (11.46%); the lowest Aw (5,21); 7.2% protein content and 23.45% yield with hedonic value of 7.08 indicating that panelists preferred that product.
Drying process characteristics of dried anchovy (Stolephorus sp.) by using cabinet and tunnel of sun dryer
Authors: Sormin R B D , Savitri I K E
Published: September 2020

Many traditional ways of preserving fish have been carried out to reduce fish water content, so that it cannot provide an opportunity of bacteria (microbes) to live and develop, eventually maintain the shelf life of fish. The study was conducted in the Village of Saliong, Subdistrict of Namlea, District of Buru, Province of Maluku, Indonesia, where the community drained their anchovy on the karoro net along the roadside. The most problem faced by the fishermen is the fish sanitation, hygiene and the rain fall. In order to produce the dried anchovy with good quality, this research was aimed to study the characteristics of dried anchovy (Stoleporus sp) by application of the cabinet and tunnel type of sun drier. The parameters observed including: organoleptics (appearance, smells and texture), proximate (water, protein, fat and ash content) and the presence of bacteria (total plate count/TPC). The results showed that there were differences in characteristics between the use of cabinet and tunnel dryers. The characteristics of dried anchovy provided by using cabinet dryer indicated that organoleptic such as appearance, smells, and texture were 7.83, 8 and 8 respectively; proximate that is moisture content, protein content, fat content and ash content were 17.51%, 67.25%, 3.66% and 11.56% respectively; and TPC value was 6.05 x 101CFU/ml. On the other hand, the characteristics of dried anchovy by using tunnel dryer showed that organoleptic namely appearance, smells, and texture were 8.56, 8.30 and 8.46 respectively; proximate namely moisture content, protein content, fat content and ash content were 18.19%, 66.3%, 3.69% and 11.8% respectively; and TPC value was 4.1 x 101CFU/ml. Finally, it seems that the tunnel dryer was better than cabinet drier for dried anchovy.
The classification of upwelling indicators base on sea surface temperature, chlorophyll-a and upwelling index, the case study in Southern Java to Timor Waters
Authors: Kunarso  , Hadi Safwan , Sari Ningsih Nining , Baskoro Mulyono. S. , Wirasatriya Anindya , Kuswardani Anastasia R. T. D.
Published: September 2020

The Understanding of the existence of upwelling, which concerning location, onset and ending, top temporally, strength, extent area are very important for the management of marine waters, especially fishing and conservation. A method is needed to identify the area of upwelling base on its indicators. The one method that is needed is to classify the upwelling indicator. The aim of the research is fist studying the method classification of upwelling criteria base on SST, chlorophyll-a and upwelling index. Second, apply classification of upwelling criteria for mapping upwelling area on four case climate variability and third examine the effect of ENSO and IOD on the variability of the upwelling area. The research result, based on SST, chlorophyll-a and upwelling index in the Indian Ocean south of Java to Timor with statistical methods, have successfully divided upwelling criteria into 4: weak upwelling, medium upwelling, strong upwelling and very strong upwelling. Based on the upwelling criteria, we can apply mapping the location of upwelling, to determine the spatial distribution and extent of upwelling in Indian Ocean waters southern of Java to Timor. Two indicators of upwelling SST and chlorophyll-a are more accurate in the application if be used together. The variability of ENSO and IOD significantly effected growing and reducing the range of upwelling indicator (SST, chlorophyll-a and upwelling index), but the IOD index much greater effecting than ENSO index (SOI).
The potential stocks and carbon uptake by seagrass meadows at Pari Island, Kepulauan Seribu, Indonesia
Authors: Amanda Citra Febi , Suryanti Suryanti , Rudolf Muskananfola Max
Published: September 2020

The development of human civilization during the last century has increased carbon dioxide content in nature that will contribute to global climate change. However, ocean water will reduce this increase by absorbing CO2. The increasing CO2 content in the ocean could decrease pH and carbonate ion, which will have negative impacts on the life of marine organisms, food production and human life. Seagrass meadows through photosynthetic processes could absorb CO2 and store carbon in large amounts for an extended period. This process could be the strategic way of resolving global climate change. The purpose of this research was to identify the species of seagrass, quantify the density and coverage of seagrass, and calculate biomass and carbon stock in seagrass meadows at Pari Island, Kepulauan Seribu. The research was carried out in February 2019. This research used quantitative field observation with the purposive sampling method. Samples were collected from 3 locations with nine stations. The obtained samples were analyzed at the Laboratory of Faculty of Fisheries and Marine Science, Diponegoro University. Carbon and sediment samples were analyzed using Loss in the Ignition (LOI) method. The results showed that there are three species of seagrass in Pari Island, i.e. Enhalus acoroides, Thalassia hemprichii, and Cymodocea rotundata. Total density value was 129.19 individual m−2 and total coverage value was 62.59%. Total stock potential of carbon value in Pari Island was 87.80 ton per ha with total area of seagrass meadows of 3.48 ha. Silty-sands mainly dominated sediment textures. It can be concluded that seagrass meadows are potential habitats to control CO2 concentration in coastal waters and to hold the rate of climate change.
In vitro antibacterial study and spectral analysis of brown seaweed Sargassum crassifolium extract from Karimunjawa Islands, Jepara
Authors: Ari Setyati Wilis , Pramesti Rini , Susanto A.B. , Chrisna A.S. , Zainuddin Muhammad
Published: September 2020

Staphylococcus aureus and Pseudomonas aeruginosa are opportunistic pathogenic bacteria that are the main causes of nosocomial infections. These bacteria can infect almost every tissue of the body and there were 15% cases of infection in hospitals. Urinary tract infections, even sepsis, where the death rate reaches 50%. Inappropriate use of antibiotics raises resistance. About 10% of bacterial isolates are generally expressed as S. aureus and P. aeruginosa Multidrug Resistant (MDR). Sargassum brown seaweed has many potential antimicrobial compounds. This research aims to screen the antibacterial active compounds of Sargassum crassifolium seaweed against S. aureus and P. aeruginosa MDR bacteria. S. crassifolium collected from waters of Karimunjawa Islands, Jepara. The research was conducted by laboratory experimental methods. Sample was extracted with diethyl ether, methanol, ethanol and chloroform. The MIC value is done by measuring the diameter of the inhibitory zone in the antibacterial activity test of the agar diffusion method. Furthermore, extracts at MIC concentrations were tested for the antibacterial activity of the diluted method by measuring bacterial OD by spectrophotometric methods. The extract with the best antibacterial activity was performed spectral analysis by GC-MS method. The results showed that the different extracts had different MIC values (p <0.05). Extracts with high antibacterial activity are extracts from diethyl ether solvent. The extract has a MICP value of P. aeruginosa 12.7 mg/ml and S. aureus 8.4 mg/ml. P. aeruginosa has exponential growth at 12 hours and death at 44 hours. While exponential S. aureus was at 16 hours and death at 36 hours. Spectral analysis of S. crassifolium extract of diethyl ether solvent showed the composition of the presence of eicosane compounds (16.22% ), dotriacontane (11.27%), nanocosane (11.09%), dicosane (9.85%), 10.13-octadeadienoic acid (9.52%). 2-butyloctanol (6.33%), pentatriacontane (5.4%), tritriacontane (5.07%), tricosane (1.6%)
Multidrug-resistant antibacterial activity and active compound analysis several types of seaweed from Karimunjawa, Jepara
Authors: Susanto A.B. , Ari Setyati Wilis , Pramesti Rini , Pringgenies Delianis , Zainuddin Muhammad
Published: September 2020

Pathogenic bacteria that recently infect humans have been undergone an evolution. The evolution of treatment measures is not in accordance with the dose. Several cases in hospitals have found multi-type bacterial drug resistance. These cases affected much death of the patient. Therefore, this study explores the seaweed from the Karimunjawa Islands, Jepara as the potential sources of new antibacterial active compounds. The study is conducted in the laboratory and used the experimental design of sampling, extraction, resistance test, antibacterial extract test, and analysis of extract active compounds. There are three types of seaweed sampled:S. crassifolium, Padina australisandDictyota dichotoma.Each extraction is carried out with diethyl ether, methanol, ethanol and chloroform solvents. This study used pathogenic bacterial isolates:Pseudomonas aeruginosa, Staphylococcus epidermidis, Staphylococcus aureusandEscherichia coliwhich are tested with 13 antibiotics. The resistance test showed the value of multiple antibiotic resistance index (mar) of 0.84; 0.76; 0.48 and 0.34. Antibiotics with a high percentage resistance value (100%) are from groups of lipopeptides (colistine sulfate) and (3-lactams groups (ampicillin). The seaweeds extract tested for antibacterial activity at different concentrations. The results showed that different types and concentrations of extracts had different antibacterial activity values (p <0.05). The extract with high antibacterial activity is an extract from seaweedS crassifoliumwith methanol solvent. The extract contained phenol 12 mg/g, flavonoid 1.6%, tannin 0.63%, fucoxanthin 0.59 mg/g, carotenoid 165.9 g/g, chlorophyll-a 0.92 mg/g and chlorophyll-b 0.28 mg/g.
Exploration of bacteria associated with Nudibranchs to control Vibrio spp.
Authors: Sarjito  , Prayitno S B , Farisa M Y , Nast R T C , Kristiana R , Sabdaningsih A , Sabdono A
Published: September 2020

Shrimp culture process of Litopenaeus vannamei could not be separated from the disease threats. Vibriosis is the main cause of a decrease in aquaculture production. Vibrio harveyi is a pathogenic bacteria that can caused high mortality and Vibro parahaemolyticus can also cause massive financial losses in shrimp culture. The use of antibiotics to control vibriosis, however, has a negative impact. For example, it resulted in the shrimp resistance to pathogenic bacteria. The potential of bacteria that are symbiotic with nudibranchs as anti Vibrio spp. has not been reported yet. The aim of this experiment was to examine the presence of bacterial symbiont in a nudibranch to inhibit or stop the growth of V. harveyi. Antibacterial activity test was done by the overlay method. The tested pathogenic bacteria were used V. harveyi and V. parahaemolyticus. Then the active bacteria were identified by morphological and molecular using 16S rRNA gene sequence. Isolation of bacterial symbiont in Nudibranch revealed 144 isolates. From those isolates only one isolate (SM-N-3(2)/7) was identified as having the ability against V.harveyi and V. parahaemolyticus. The isolate was gram negative rod bacteria. Based in molecular identification using 16S rRNA it was closely related to Pseudoalteromonas piscicida strain NBRC (99%).
Engineering culture using natural filter differences based on microsatelite to improve the quality of Snakehead (Channa striata)
Authors: Samidjan Istiyanto , Rachmawati Diana
Published: September 2020

The aim of the study was to examine various biological filters for hyacinth, hydrilla, apu apu and azzola media based microsatellite analysis of quality snakeheads (C striata) production. The research was carried out at the integrated laboratory of Diponegoro University in January to April 2019. The snakeheads used was size 4.83 ± 0.02 cm long of body and weighed 5.47 ± 0.12 g / fish, using artificial feed 35% protein content is given 3% perbiomas per day. The design used CRD 4 treatments and 3 replications were T1 (hyacinth), T2 (Hydrilla), T3 (apu apu), and T4 (Azzola) treatments, then for determining the quality the microsatellite genetic marker IS-GB1F 5-CCC TGT ATT TCA TTT CTC CA -3 and IS-GB 1 R 5-ACC ACT AAC GCA ATC TCT CT-3, for measuring genetic variation, polymorphic, number allel. Data analysis used minitab version 11. The results showed that the best treatment was T3 with survival rate 96.67 ± 1.92%, absolute weight growth of 14.60 ± 2.41g, SGR 2.61 ± 0.22% / day. The quality of snakehead using microsatellite was T3(band10-12, 13-16) on the best quality of snakeheads fish on T3 (204 bps allel ladder with 215 bps.
Persistence of high sea surface temperature (> 30°C) in Tomini Bay
Authors: Da Cruz Tita Aprilia , Wirasatriya Anindya , Sugianto Denny N , Maslukah Lilik , Handoyo Gentur , Hariyadi  , Helmi Muhammad , Avianto Praditya
Published: September 2020

Hot Event is a phenomenon with high sea surface temperature > 30°C, which can influence the global climate. Tomini Bay which is categorized as the semi-enclosed waters have the daily appearance of SST >30°C. The purpose of this research is to investigate and determine the mechanism for the occurrence of high and constant SST (>30°C) in Tomini Bay. We found that the phenomenon of constant high SST (> 30°C) in Tomini Bay is influenced by the weak wind speed by less than 4 m/s. The existence of Sulawesi topography and the Togian Islands block the incoming wind and reduce the wind speed. Moreover, the percentage of SST (>30°C) in the middle of Tomini Bay higher than in the western area of Tomini Bay. This might be influenced by the shallow bathymetry in the middle of the Tomini Bay which increases the effectiveness of the heating process in this area.
Retraction: Energy Balance in a Greenhouse: Temperature and Humidity Monitoring (IOP Conf. Series: Materials Science and Engineering
872 012031)
Authors: Viloria Amelec , Rosania Altahona Tiana Alexandra , Pineda Lezama Omar Bonerge
Published: September 2020

Published 15 September 2020

This article, and others within this volume, has been retracted by IOP Publishing following clear evidence of plagiarism and citation manipulation.

This work was originally published in Spanish (1) and has been translated and published without permission or acknowledgement to the original authors. IOP Publishing Limited has discovered other papers within this volume that have been subjected to the same treatment. This is scientific misconduct.

Misconduct investigations are ongoing at the author’s institutions. IOP Publishing Limited will update this notice if required once those investigations have concluded.

IOP Publishing Limited request any citations to this article be redirected to the original work (1).

Anyone with any information regarding these papers is requested to contact conferenceseries@ioppublishing.org.
Retraction: Energy potential of vinasse derived from rum manufacturing (IOP Conf. Series: Materials Science and Engineering
872 012032)
Authors: Vásquez Stanescu Carmen Luisa , Carrillo Kevin , Espinoza Betzabeth , Rizzo Aniello , Fajardo Carla , Ramírez-Pisco Rodrigo , Viloria Amelec
Published: September 2020

Published 15 September 2020

This retraction notice was removed on 25 Sep 2020. IOP Publishing apologises for this error. See Publisher's Note.

This article, and others within this volume, has been retracted by IOP Publishing following clear evidence of plagiarism and citation manipulation.

This work was originally published in Spanish (1) and has been translated and published without permission or acknowledgement to the original authors. IOP Publishing Limited has discovered other papers within this volume that have been subjected to the same treatment. This is scientific misconduct.

Misconduct investigations are ongoing at the author’s institutions. IOP Publishing Limited will update this notice if required once those investigations have concluded.

IOP Publishing Limited request any citations to this article be redirected to the original work (1).

Anyone with any information regarding these papers is requested to contact conferenceseries@ioppublishing.org.
Commissioning of a laboratory setup for studying the effects of ultraviolet and ozone on multifractional, unsorted production and consumption wastes
Authors: Abdullin T M , Gilmanshin I R
Published: September 2020

The article describes the process of commissioning carried out during the testing of the designed and manufactured laboratory installation for studying the effects of ultraviolet radiation and ozone on unsorted fractions of production and consumption waste, including medical waste. A detailed description of the installation is made, the characteristics of the elements of a power electric drive, metrological strapping and automation are given.
Design of a laboratory installation for studying the effects of ultraviolet radiation and ozonation on organic compositions, unsorted municipal and medical waste
Authors: Abdullin T M , Gilmanshin I R
Published: September 2020

The article presents the design process of a laboratory setup for studying the ultraviolet effect and ozonation on multifractional unsorted production and consumption wastes, including medical ones. The tasks, structural and functional diagram of the installation are formulated. The requirements for the constituent elements are defined. The process of designing and selecting components is described..
Alternative model of project management at the stages of R&D
Authors: Antonov A V , Puryaev A S
Published: September 2020

The purpose of the work is to cover the practical application of innovative project management mechanisms using the principles of Target costing in the field of engineering. The approaches and requirements for the application of tools in practice are identified. Mechanisms for applying approaches based on the Target Costing concept in the development and updating of the technical and economic model are proposed.
Simulation of heat flows in a combined process of plasma spraying and coat hardening
Authors: Kadyrmetov A M , Sharifullin S N , Snyatkov E V , Plahotin A A , Mandrykin I A , Romanov V V
Published: September 2020

The simulation technique of heat distribution in a detail for applying plasma coating in combination with electro-mechanical treatment and cooling by water jet is worked out. It is shown that water cooling substantially decreases the workpiece surface temperature and provides the formation of more rugged coat by reducing of internal stresses in it.
Study of the influence of hydroabrasive surface cleaning on a laser cutting
Authors: Gabdrakhmanov Az T , Israphilov I H , Shafigullin L N , Gabdrakhmanova T F
Published: September 2020

The example of laser cutting of 1.0038 steel shows the features of waterjet (EPS) cleaning. The influence of laser cutting parameters on ensuring the necessary quality and properties of steel is considered.
Research of properties of polymer compositions based on aluminosilicate microspheres
Authors: Gabdrakhmanov Az T , Galiakbarov AT , Karasev I Y , Gabdrakhmanova T F
Published: September 2020

The paper presents the results of studies of polymer compositions based on aluminosilicate microspheres. Polyester resin Yarkopol-20 and epoxy glue ED-20, as well as grades of aluminosilicate microspheres K 500 and K150 were chosen as the binder of aluminosilicate microspheres. The obtained thermal conductivity coefficients are comparable with the thermal conductivity coefficients of materials such as fiber asbestos, wood, expanded clay concrete, etc.
Digital educational environment: training future teachers to design additional education
Authors: Gilmanshina S I , Minnakhmetova V A , Gilmanshin I R , Galeeva A I , Abyzbekova G M
Published: September 2020

The concepts of further education - care and development are considered. Additional general educational programs are justified taking into account age and individual characteristics of children, adolescents and youth. The possibilities of a digital educational environment for teaching future teachers to design additional chemical education in primary and secondary schools are considered.
Using digital agricultural production based on navigation and information systems
Authors: Kashapov N F , Nafikov M M , Nafikov M M , Nigmatzyanov A R , Makarova O I , Medvedev V V , Chernov V A , Nigmatullin M D
Published: September 2020

Due to the peculiarities of the agro-industrial complex of the Russian Federation, the digitalization of agriculture has a number of significant features. At its core, these technologies are innovative, one of the most important functions of which is intellectual. There is a need to clarify the concepts of’transfer of enterprises of all forms of ownership of agroindustrial complex to the figure”: is the process of determining the feasibility of implementation of digitalization and robotics, the purchase of innovative technologies in agribusiness companies, adaptation of the technology and production system, operation and determination of the effectiveness of its use in a specific production, taking into account soil-climatic conditions in the area of implementation.
The increasing of the electric vehicle maneuverability, excluding disconnecting of the survey from the contact network
Authors: Khafizov A A , Akhmetshin R S , Valiev R I
Published: September 2020

A technical solution is proposed that allows to increase the maneuverability of an electric vehicle without reducing the speed of movement, excluding the arbitrary disengagement of the current collector from the contact network at road junctions and turns.
Improving the quality of surfaces of products obtained by electroerosion treatment
Authors: Khafizov I I , Nurullin I G
Published: September 2020

The use of electroerosive processing in production helps to achieve the desired results: high processing accuracy, low roughness of the treated surface and low dependence of productivity on the mechanical properties of the processed materials. Despite this, the need for effective processing of parts and improving the technological process of electroerosion treatment is an urgent topic for research.The trouble-free and long-lasting operation time of machine parts largely depends on the quality of the surface layer. Therefore, it has a high demand, since it is all the destruction begins with the surface.
Comprehensive Test Procedure for Digital Instruments and Devices of Automated Versatile Systems
Authors: Khusnutdinova E M , Pavlov P P , Fandeyev V P , Khizbullin R N , Khusnutdinov A N , Cherepen’kin I V
Published: September 2020

The authors present a comprehensive test procedure for digital devices, based on the calculation and control of two or more characteristics of a binary signal at a control point. The procedure is aimed at how to increase the reliability of performance monitoring and localization of the failure of digital devices as part of automated versatile systems.
Development of apparatuses based on kinetic calculation data of the process of removing liquid from solid materials by reducing pressure of vapor-gas medium
Authors: Lashkov V A , Kondrasheva S G , Khamidullina D A , Karataeva E S
Published: September 2020

The possibility of developing a apparatus based on the results of kinetic calculations of the processes, occurring in it, is considered. The studies were carried out with the system solid-liquid-vapor-gas medium with a continuous increase in vacuum above the surface of a layer of the dispersed material. The presence of the liquid phase and the vapor-gas phase in equilibrium with it makes it possible to provide a change in concentration, structure, or cooling in the system due to artificial disturbance of the dynamic equilibrium of the system. To develop a mathematical model of the liquid removal process, a model of ideal mixing in the vapor-gas phase and a layer of the dispersed material was adopted. The calculation results are presented in the form of kinetic dependences of the main process parameters. Calculation of the apparatus is carried out at the highest load in the vapor-gas phase during the period of removal of the free moisture. In this case, the influence of rarefaction on the physical characteristics of the removed fluids and the design features of the apparatus being calculated was taken into account.
Quality management when operating the power equipment
Authors: Mamonova A O , Khusnutdinova E M , Khusnutdinov A N
Published: September 2020

This paper looks into the possibilities of designing an integrated quality management system for the operation of power equipment to ensure the fabrication of competitive products, increase the reliability and safety of production.
The current quality management system at Magnitogorsk iron and steel works
Authors: Moliboga M N , Khusnutdinova E M
Published: September 2020

The paper covers the basic principles of the quality management system applicable in Magnitogorsk Iron & Steel Works (hereinafter - MMK PJSC or MMK). The authors refer to various monitoring methods and methods allowing a conclusion on the acceptability of a particular system, describe the types of work performed to improve and facilitate the growth of the company, and apply a new approach to quality management (Group certification) based on a single regulation. Based on the study of the matter described in this paper, a conclusion can be made that this system is necessary for coordinating the further performance of the entire company and its subsidiaries.
Medical and Biological Problems in the Control of Therapeutic Exposure Parameters in Sports Medicine and Ways of Their Solution in New Medical Instruments and Systems
Authors: Sabitov L S , Khizbullin Rob N , Khizbullin Rad N , Pavlov P P , Khusnutdinov A N , Abdullina A R
Published: September 2020

High-quality treatment and recovery of athletes-patients depends on reliable informational diagnosis of injuries and diseases, but also on adequate therapeutic effect. In most cases, the question remains of further predicting the condition of the patient-athlete as a result of the treatment. The article discusses the main biomedical problems in monitoring the therapeutic parameters of exposure and ways to solve them in new devices and systems based on thermometric and optoelectronic methods.
Recommendations for making sound absorbing polyurethane materials
Authors: Shafigullin L N , Romanova N V , Zonina S V , Valinova I E , Karasev I Yu
Published: September 2020

We performed the comprehensive studies of physical mechanical properties of KAMAZ vehicle mats from three manufacturers. It was found that structure of PU foam cells was the key structural parameter that influenced heat- and sound-absorbing properties of products. The paper provides manufacturers with the recommendations for managing structural parameters of a PU foam layer in a mat.
Rationality and possibility of automation of precision calibration of gears
Authors: Shibakov V G , Pankratov D L , Nizamov R S , Hairullin R A
Published: September 2020

The main factors that determine the accuracy and quality of the ring gear during precision calibration are described. The corresponding ACS (automated control system) schemes are proposed.
Industrial control system software patterns in manufacturing
Authors: Valiev R A , Khuzyatov Sh Sh
Published: September 2020

The technique of pattern-designing software for an industrial control system for standard engineering processes has been implemented, where the same type of equipment is used and the same workpiece processing sequence is implemented. Patterns for the user controller program and supervisory control and monitoring software have been developed. Pattern elements are represented by the same type of sensors and actuators, which have the same algorithms for data processing and calculating of control actions. For them data types, data storage, functionality and organization of the exchange between programmable logic controllers and human-machine interface devices are defined. The necessary correspondence was established between template projects of various levels of the control system, which made it possible to organize a network exchange by data blocks.
Cubic-shape hematite decorated with plasmonic Ag-Au bimetals for enhanced photocatalysis under visible light irradiation
Authors: Park Soo Hyun , Jung Won-Sik , Kadam Abhijit N , Lee Sang-Wha
Published: September 2020

Cubic-shape hematite (C-Fe2O3) was facilely prepared by hydrothermal autoclave reaction of Fe3+ in the presence of 1,12-diaminododecane at 130 °C for 10 h. The surface of C-Fe2O3 was decorated with nanosilvers through the sonochemical reduction of Ag precursor (0.1–0.4 ml of 1.0 wt.% AgNO3), so-called C-Fe2O3@Ag. After then, the C-Fe2O3@Ag was plated with Au layer via galvanic-assisted reduction of Au precursor (0.04–0.14 ml of 1.0 wt.% HAuCl4), so-called C-Fe2O3@Ag-Au. Scanning electron microscopy demonstrated the formation of cubic-shape hematite deposited with plasmonic nanometals. X-ray photoelectron spectroscopy analysis confirmed the existence of Ag and Au crystals. Photocatalytic performance of the hematite samples was estimated towards the degradation of methylene blue (MB) under visible light. The C-Fe2O3@Ag (0.2 ml) exhibited the five-fold increase of photocatalytic activity to that of the pristine C-Fe2O3. Furthermore, Au-deposited C-Fe2O3@Ag (0.2 ml), i.e., C-Fe2O3@Ag-Au, exhibited the 200% increase of photocatalytic activity to that of the C-Fe2O3@Ag (0.2 ml), owing to the plasmonic coupling effect on the extended visible light absorbance and enhanced separation efficiency of electron-hole pairs on the hematite surface.
Hydrothermal synthesis of Hydrangea macrophylla-like Ce-doped SnO2 microspheres and their enhanced sensing properties
Authors: Diao Quan , Yin Yuna , Xu Xiumei , Su Chaohua , Cao Jian , Qin Qi , Jiao Mingli , Yang Kai
Published: September 2020

The hydrangea macrophylla-like SnO2 microspheres doped with different Ce contents (0, 2, 6 and 10 mol%) were synthesized by a facile hydrothermal method. The crystal phase, micro morphology and element composites were investigated by x-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM) with energy-dispersive spectroscopy (EDS) and x-ray photoelectric spectroscopy (XPS). The results demonstrated the hydrangea macrophylla-like microstructure of the prepared samples and the existence of Ce3+/Ce4+ when doped with Ce element. Furthermore, the synthesized Ce-doped SnO2 samples’ sensing properties were investigated. The SnO2 microspheres doped with 6 mol% showed the largest response to acetone during 0.2–20 ppm at 320 °C as well as good selectivity and reproducibility. As discussed, the Ce doping that generates n-n type heterojunction and the Ce3+/Ce4+ conversion increases the resistance change of Ce-doped SnO2 in reducing atmosphere and enhances the response.