bluuebunny/crossref_metadata_2025 huggingface dataset:
Is a “Cause of Austria” the “Cause of Germany”? Conservative Reflections on Austrian Participation in the German Problem During the Napoleonic Warfare Era
Authors: Рагозин Г.С.
Published: August 2022

Статья обращается к проблеме «сопричастности» Австрии и Германии в период Наполеоновских войн. Дискуссия об отношениях Вены и остальной Германии по итогам распада «Старого Рейха» шла в доме Габсбургов, армии и бюрократии. Лозунг «Дело Австрии – дело Германии» был призван обосновать связь этих земель образами прошлого и настоящего. Такие идеологи консерватизма, как Ф. фон Генц и Й. фон Хормайр, обратились к исторической памяти, династическому патриотизму, а также критике Французской революции и Наполеона. Их идеи подхватили реформаторы, полководцы и лидеры движений против Наполеона в 1803–1809 гг. После Шенбруннского мира произошло иное осмысление лозунга и австрийского консерватизма в целом.

The paper deals with the German-Austrian “mutuality” issue during the Napoleonic warfare. Discussion on relations of Vienna and the rest of Germany was on the agenda for the Habsburg family, army and bureaucracy after the “Old Reich” collapsed in 1806. The motto “A cause of Austria is the cause of Germany” was to prove the connection between these lands with the means of historical and contemporary images. The conservative ideologists like F. von Gentz and J. von Hormayr referred to historical memory, dynastic patriotism and criticism towards the French revolution and Napoleon. Their ideas gained feedback from reformers, warlords and rebel leaders acting against Napoleon between 1803 and 1809. After the Schönbrunn peace the motto and the Austrian conservatism went through re-evaluation.
Freedom of the Individual versus a “Free State”: Illusory Dilemma or Political Reality?
Authors: Ширинянц А.А. , Гуторов В.А.
Published: August 2022

Статья представляет критический анализ интерпретации политической философии Карла Маркса в книге Леви дель Агила Марчены, перуанского философа, работающего в Папском католическом университете в Лиме. Книга опубликована в международной серии Marx, Engels, and marxisms. Исходным моментом ее критического анализа стал полиморфный и несколько претенциозный концепт «the Dualism of Realms», характеризующий, по мысли автора книги, утопичность трактовок в марксистской политической философии проблем государства, индивидуальной свободы и путей ее реализации. В книге «обыгрывается», по существу, только один сюжет, который постоянно присутствует на многих десятках страниц, а именно – выявление «исходных противоречий» Маркса, причиной которых автор считает «неистребимую инерцию» либерализма в его политической философии.

The article presents a critical analysis of the interpretation of the political philosophy of Karl Marx in the book by Levi del Aguila Marchena, a Peruvian philosopher working at the Pontifical Catholic University in Lima (Senior Professor and Chair of the Department of Management Sciences at the Pontificia Universidad Católica del Perú). The work has been published in the international series Marx, Engels, and marxisms. The starting point of her critical analysis was the polymorphic and somewhat pretentious concept of "the Dualism of Realms", characterizing, according to the author of the book, the utopian interpretations in Marxist political philosophy of the problems of the state, individual freedom and ways of its realization. In the book, in essence, only one plot is “played out”, which is constantly present on many dozens of pages, namely, the identification of Marx’s “initial contradictions”, the cause of which the author considers the “indestructible inertia” of liberalism in his political philosophy. In our opinion, Aguila Marchena set himself an extremely difficult and thankless task, given the large number of opponents both among modern supporters of Marxism, which is quite understandable, and in academic science. It is probably for this reason that the author prefers not to get involved in modern scientific controversy and in the final chapters completes his reconstruction “all alone”. As a result, the rethinking of the theme of personality/free state in Marx's philosophy, which the author obviously considers a contribution to science, looks one-sided and dogmatic.
Ideology as a Language and Meta-language. The Significance of Lotman’s Semiotics of Culture for the Modern Theory of Ideologies
Authors: Демин И.В.
Published: August 2022

Рассматриваются возможности применения концептуально-методологических новаций и терминологического аппарата семиотики культуры Ю.М. Лотмана в контексте изучения языка идеологии. Теория культуры Лотмана позволяет зафиксировать и описать как семиотическое единство, так и неустранимое идеологическое многообразие мира политики. Проведено различие между языковым и метаязыковым уровнями функционирования идеологии. Для описания метаязыкового уровня использованы термины «идеологическая парадигма» и «фоновая идеология». Показано, что идеология, функционирующая на метаязыковом уровне, стремится совпасть с политическим языком, выдает себя за идеологически нейтральный язык социальных наук.

The article analyzes the possibilities of applying the methodology of Lotman’s semiotics of culture in the context of the study of the language of ideology. Lotman’s theory of culture is an opportunity to describe both semiotic unity and the ideological diversity of the world of politics. The article distinguishes between the linguistic and meta-language levels of ideology functioning. The terms “ideological paradigm”, “background ideology” are used to describe the meta-language level. Ideology at the meta-language level strives to coincide with political language, ideology pretends to be the neutral language of social science.
Standalone application for hull volume calculation based on Simpson’s rule using PYQT5
Authors:   Constanta Maritime Univeristy, PINTILIE A.
Published: August 2022

The area and volume estimation for an irregular surface is a real challenge, especially when it comes to a ship.This paper aims to give an insight into the process of developing a software for hull volume approximation based on Simpson’s Rule, using PyQt5. It comprises a brief introduction, information about Simpson’s integrating method, along with its usage in the hull volume approximation, the developing process of the software and a testing section.
Modelling and Analysis of Microcontroller Based MPPT Method Using FPGA
Authors:   Guru Nanak Institute of Technology Hyderabad, Naresh M.
Published: August 2022

Now days, the renewable energy sources (RES) are the most accomplished system for power generation. In this paper, focus on FPGA based digital controller for the grid connected DG system. The study and performance analysis of grid-connected PV system as follows to improve the efficiency of the grid system and to extract the maximum power. This work is designed & development of FPGA. The DC power and battery capture on the DC bus system we have maintained the unity power factor and harmonics current in the DG system. The bi-directional battery systems also provide quick response & the performance under the variable DC voltage. Then, to develop the effectiveness control strategy is to manage the power flow equally AC & DC sides. This system simulated in MTTLAB Tools and FPGA System.
Continuing Professional Development for Mariners
Authors:   Piri Reis University, Demirel E.
Published: August 2022

Continuing Professional Development (CPD) is now a part of our life in exponentially changing posture of the world. We are living in disrupted development which requires to adopt new technologies in our profession as well as to support emerging new professions. It is important for professionals to keep up with technologic developments and enable themselves to adopt challenging requirements. All the leading parties of maritime industry should understand and evaluate the future of the maritime business and advice the Maritime Education and Training (MET) and research institutes to prepare CPD programmes for mariners. More important the maritime industry should decide their requirement for CPD and manage themselves to get benefit from the CPD to secure their business ensuring their employers’ career development to adapt to challenging requirements. The purpose of this research is to evaluate what kind of initiatives should be started to achieve a reliable and sustainable CPD system for mariners as well as encouraging them to get benefit from CPD programmes. As a continuation of this investigation, possible CPD providers and suitable delivery methods for mariners will be defined. This paper argues for a more realistic approach for CPD for mariners who have very limited access to regular education opportunities due to nature of their job at sea. A detailed literature has been conducted to understand CPD concept and applications supported with a survey conducted with respective persons in the industry to realize the facts which directly affecting CPD opportunities for people working in the shipping industry. We review related data to evaluate how we can develop an effective and reliable CPD system considering existing limitations. Herein lies the contribution of this paper; it is argued that how we can assist the mariners providing them a practical CPD system and meet the new requirements which sector needs under the pressure of rapidly changing technology and its effects on the professions. This is an initial study and results of this study may be used by other researchers who will make further studies on the facilitation of CPD.
Simulation of protection functions in LV shipboard electrical power systems
Authors:   ”Mircea cel Batran” Naval Academy, Pana L.
Published: August 2022

The basic function of a shipboard electric power systems is to supply all consumers, both essential and non-essential, with electrical energy, as economically as possible and with an acceptable degree of quality. A shipboard electrical power system comprises three principal subsystems: generation (naval power plant-island mode plant), distribution and protection and automation. During operation all these subsystems may be affected by faults. In this aim all electrical installations on shipboards are to be protected against over-currents due to short- circuits or accidental overloads. The new ABB air circuit-breakers Emax 2 and Tmax T series can be used both as main circuit-breaker in low voltage generation and distribution systems. In addition to protection, the new air ABB circuit-breakers offer possibility of communication which are particularly suitable for automation, control, measurements, grid analysis, and energy savings. ABB Relays are high-performance electronic units for these circuit breakers. Their basic function is to monitor and protect the electric systems against fault current. The units also includes: measuring, data storage, communication, self-test, load control and zone selectivity functions for these circuit-breakers. This paper presents the analysis of protections and simulates how to trigger protections within shipboard power systems.
An Unmanned Underwater Vehicle Defence System
Authors:   Harman International, Rogobete M.
Published: August 2022

Nowadays, military threats are very close to us and cover terrestrial, aerial, and maritime attacks. This research defines a submarine defence system capable of monitoring and controlling a certain perimeter, based on submersible drones known as Unmanned Underwater Vehicles (UUV) and a grid of stations fixed to the seabed, which provides positioning acoustic signals as well as full-duplex digital communication using underwater acoustic modems. The novelty is the proposed 3D grid system with each Positioning Grid Element (PGE) being an Ultra-Short Baseline (USBL) low or medium operating range device and the processing
Numerical evaluation of the behavior of a plate on impact with a rigid projectile using Smoothed-Particle Hydrodynamics method
Authors:   University Politehnica of Bucharest, Adetu C.
Published: August 2022

Modern materials strength calculations, even if applied to classical problems of the theory of elasticity or plasticity, cannot be conceived without the use of numerical calculation methods and material models. This situation is a direct consequence of the progress made in the field of computers, both in the field of hardware and software. This article presents the numerical evaluation of the behavior of a plate on impact with a rigid projectile using Smoothed-Particle Hydrodynamics method and is shown the evolution of the impact with its effects (deformation with perforation of the plate). Also, an analize of the varıatıon of the kinetic energy of the bullet and bullet velocity over time are presented.
Investigation of the New Type City Lines Passenger Ship in terms of Energy Efficiency
Authors:   Turkish Naval Forces, Ankara, Turkey, Tokuslu A.
Published: August 2022

Energy efficiency in ships is a practice that purposes to reduce CO2 gas emissions and reduce worldwide environmental pollution by using less fossil oils, less greenhouse gas releases. This practice requires technical measures to be taken on new ships and new systems (machines, propellers, etc.) in order to make new ships more energy efficient. In this study, one of the newly built passenger ship that used in transportation in the Istanbul Strait was analyzed in terms of energy efficiency performance, the energy efficiency design index (EEDI) was calculated and the applicable measures to reduce CO2 exhaust gas emissions were presented. In the calculations, it was investigated whether the ship meets the energy efficiency criteria as planned. As a result of the analysis, it was seen that the ship is an energy efficient ship and complies with IMO standards. Measures were specified to increase the ship’s energy efficiency.
Optimization of the naval ventilation systems using experimental measurements and numerical simulations
Authors:   ”Mircea cel Batran” Naval Academy, Volintiru O. N.
Published: August 2022

n recent decades, a multitude of numerical methods has been developed to support analytical and experimental research, optimizing and adding value to them, through a low cost compared to the experiment and a short time to obtain results. The Ansys Fluent program allows the visualization of the various curves and the values of all the parameters that define the phenomenon studied in this paper, respectively the ventilation of the ship machinery compartment. The comparison of the results obtained in the simulation program with the results of the measurements carried out on a real ventilation system on board the ship leads to certain aspects regarding the optimization of this type of system. Thus, the air behaviour on the ventilation system of the machinary compartment, where the ventilation requirement is quite high, can be studied with numerical calculation methods using a computer modelling program and the results can be validated by a scale experiment 1:1 on board the ship. This leads to conclusive results on optimizing the entire system.
Turbocharger breakdown investigation
Authors:   Nikola Vaptsarov Naval Academy, Popov D.
Published: August 2022

The internal combustion engine (ICE) turbocharger plays an important role in ensuring the continuous and stable power of the diesel engine as well as in reducing the environmental impact of exhaust emissions. The aim of this paper is to provide a review of the symptoms of damage and the cause of damage of turbocharger. The case is a container vessel on which the turbocharger is damaged in “Full Ahead” mode. Engine and turbocharger parameters were collected and analysed prior to failure. The parameters of the engine and the turbocharger after repair of the turbocharger are collected and summarized. In the publication is presented a report of repair work performed on the damaged turbocharger. The relevant conclusions have been made.
Universal Properties of Anisotropic Dipolar Bosons in Two Dimensions
Authors: Sánchez-Baena Juan , Peña Ardila Luisllu , Astrakharchik Gregory , Mazzanti Ferran
Published: August 2022

The energy of ultra-dilute quantum many-body systems is known to
exhibit a universal dependence on the gas parameter
x=n a_0^dx=na0d,
with nn
the density, dd
the dimensionality of the space (d=1,2,3d=1,2,3)
and a_0a0
the ss-wave
scattering length. The universal regime typically extends up to
x\approx 0.001x≈0.001,
while at larger values specific details of the interaction start to be
relevant and different model potentials lead to different results.
Dipolar systems are peculiar in this regard since the anisotropy of the
interaction makes a_0a0
depend on the polarization angle \alphaα,
so different combinations of n and \alphaα
can lead to the same value of the gas parameter x. In this work we
analyze the scaling properties of dipolar bosons in two dimensions as a
function of the density and polarization dependent scattering length up
to very large gas parameter values. Using Quantum Monte Carlo (QMC)
methods we study the energy and the main structural and coherence
properties of the ground state of a gas of dipolar bosons by varying the
density and scattering length for a fixed gas parameter. We find that
the dipolar interaction shows relevant scaling laws up to unusually
large values of xx
that hold almost to the boundaries in the phase diagram where a
transition to a stripe phase takes place.
Emulating twisted double bilayer graphene with a multiorbital optical lattice
Authors: Lee Junhyun , Pixley Jedediah
Published: August 2022

This work theoretically explores how to emulate twisted double
bilayer graphene with ultracold atoms in multiorbital optical lattices.
In particular, the quadratic band touching of Bernal stacked bilayer
graphene is emulated using a square optical lattice with
p_xpx,
p_ypy,
and d_{x^2-y^2}dx2−y2
orbitals on each site, while the effects of a twist are captured through
the application of an incommensurate potential. The quadratic band
touching is stable until the system undergoes an Anderson like
delocalization transition in momentum space, which occurs concomitantly
with a strongly renormalized single particle spectrum inducing flat
bands, which is a generalization of the magic-angle condition realized
in Dirac semimetals. The band structure is described perturbatively in
the quasiperiodic potential strength, which captures miniband formation
and the existence of magic-angles that qualitatively agrees with the
exact numerical results in the appropriate regime. We identify several
magic-angle conditions that can either have part or all of the quadratic
band touching point become flat. In each case, these are accompanied by
a diverging density of states and the delocalization of plane wave
eigenstates. It is discussed how these transitions and phases can be
observed in ultracold atom experiments.
Photochemical Property of Ethyl Acetate of Salam Stem Cortex (Syzygium polyanthum)
Authors: Najib M , Firmansyah R. Arizal , Setyawati Siti Mukhlisoh
Published: August 2022

The purpose of this experiment is to understand the photochemical property of ethyl acetate extracted from Salam Stem Cortex (Syzygium polyanthum). The electrochemical test of the sample indicated the existence of secondary metabolic compound, i.e flavonoid, alkaloid, steroid, tannin, fenolat and terpenoid. The secondary metabolic compound was mostly beneficial for pharmacology as a herbal medicine.
Analysis of Optical Properties TiO2, ZnO, TiO2: ZnO Thin Films Deposited On Glass Substrate Using Sol-Gel Spray Coating Method And Application For Degradation Of Dye Liquids.
Authors: AMANANTI WILDA - , Amananti Wilda
Published: August 2022

TiO2, ZnO and TiO2: ZnO Thin film have been deposited on glass substrate by sol-gel method of Spray Coating Technique. TiO2: ZnO and ZnO can form well above the glass substrate. The precursor solution of TiO2 and TiO2: ZnO is deposited using sol-gel method of Spray Coating Technique. Zinc acetate dehydrate (Zn (COOCH3) 2 .2H2O was dissolved into an isopropanol ((CH3) 2CHOH) solvent and then added monoethanolamine (MEA: HOCH2CH2NH2) .The solution was stirred at 70oC until a clear and homogeneous solution was obtained.Titanium Tetraisopropoxide (TTIP) 0 , 73 ml was dissolved into 4.27 ml of isopropanol and 20 ml of ethanol, after which the solution was titrated with 5 ml of ethanol, 3.4 ml acetic acid and 0.26 ml H2O, then stirred on hot plate stirrer at room temperature ( Further, the ZnO, TiO2 and TiO2: ZnO precursor gels were sprayed on a glass substrate that was heated at a temperature of 450 ° C. The results of the TiO2 thin film bandgap energy measurement were 3.58 eV, ZnO thin films of 3.08 eV, and a thin layer of TiO2: ZnO of 3.06 eV Doped photodegradation dye Direct blue 10 ppm using UV-reactor The highest percentage of degradation is found in TiO2: ZnO thin film
Application of Liquid Organic Fertilizer from River Moss and Seaweed to Increase the Growth of Mustard Soft Stem Plants
Authors: Briliyandika Nanda , Amaliyani Nurul
Published: August 2022

The 21st century development of plants in the agribusiness and agro-industry sectors, one form of agricultural agribusiness is mustard cultivation. However, in general, this cultivation still uses artificial chemical plants which have a negative impact if used continuously for plants, soil, and consumers. Seaweed besides being able to be consumed by the body, it can also be used as a liquid organic base. The content of seaweed in the form of calcium, manganese and potassium can actually increase plant growth. This study aims to determine the effect of liquid fertilizer applied by researchers on the growth of mustard plants. The method used is to make fertilizer made from seaweed and river moss. Giving liquid fertilizer to mustard plants with various percentages and measuring the height of mustard plants every 5 days for 25 days. The results showed that the application of organic fertilizer with seaweed as the base material could increase the growth of mustard plants. Seaweed-based fertilizers contain K2O which can stimulate growth hormone growth. This is evidenced by the difference in plants given liquid fertilizer made from seaweed and river moss.
Characterization of Mineral Content of Iron Sand at Depok Beach, Sigandu Beach and Muara Beach in Batang Regency
Authors: Nurayni Siti , Nofitasari Riska Nila
Published: August 2022

Research on the characterization of iron sand mineral content has been carried out. The purpose of this study was to determine the magnetic mineral content found in the iron sands of Depok Beach, Muara Beach and Sigandu Beach, Batang Regency. Iron sand samples were taken from Depok Beach, Muara Beach and Sigandu Beach, Batang Regency. Sand is extracted using a permanent magnet to separate magnetic and non-magnetic sand. The magnetic sand that has been separated is tested for the type of mineral content by XRD (X-Ray Diffraction). The results showed that the type of magnetic mineral sand from Depok Beach, Muara Beach and Sigandu Beach, Batang Regency, contained Geothite (FeO2), Hematite (Fe2O3), Maghemite (Fe2O3) and Magnetite (Fe3O4) compounds. Calculation of the crystallitesize value on the iron sand of Depok Beach is 45.67, Muara Beach is 33.34 and Sigandu Beach is 33.11.
Study of Zno:Ga Thin Film Structure With Variation of Plasma Power Using the DC Magnetron Sputtering Method
Authors: Marwoto Putut , Astuti Budi , Sugianto Sugianto
Published: August 2022

ZnO:Ga thin films grown on a corning glass substrate by the DC Magnetron Sputtering method have been successfully grown. The purpose of this study was to study the effect of plasma power on the resulting thin film structure. The quality and structure of the films were studied using X-ray duffraction (XRD), and scanning electron microscopy (SEM). Based on XRD characterization, it was found that the ZnO:Ga thin film has a hexagonal wurtize structure on the C-axis with orientation planes (002) and (101). The quality of the resulting thin films can also be seen from the value of full-width at half maximum (FWHM) in the orientation plane (002) which increases with increasing plasma power during the growth process from 0.13°- 0.16°. The larger the FWHM value, the smaller the crystal grain size so that the structure becomes less good. This is supported by the surface morphology of the film which is less dense when the plasma power increases. ©2018 JNSMR UIN Walisongo. All rights reserved.
Analysis of Axial CT-Scan image of COVID-19 patients based in gender using the Otsu Thresholding method
Authors: Damayanti Melany Puspa , Sumarti Heni
Published: August 2022

At the beginning of 2020, the world was shocked by the emergence of the COVID-19 virus. This virus has spread to all corners of the world, not only in Indonesia. Therefore, the government needs to make efforts to break the chain of transmission of this virus. One of these efforts is to detect COVID-19 as early as possible. Using CT images can be one of the early detection efforts of early-phase lung infections in COVID-19 patients. The stage in detecting COVID-19 is by segmenting the image. In this study, segmentation was carried out using the Otsu Thresholding method on 8 axial CT images of the lungs of COVID-19 patients, consisting of 4 images of male patients and 4 images of female patients. Then the image segmentation results of male and female patients were compared and evaluated using ROC measurements, Threshold (T) values and analyzed for GGO (grand-glass opacity). The result can be seen that judging from the value of the ROC measurement results, the measurement of image segmentation evaluation of male patients is more accurate than female patients. The number of false negatives for male patients and female patients is the same, while the number of false positives for male patients is less than female patients. Threshold value of the image segmentation results of male and female patients is the same so that the density of image segmentation is the same. GGO (grand-glass opacity) for male COVID-19 patients aged between 45-55 years is fuller than female COVID-19 patients aged 45-55 years. This shows that men are more at risk of dying from COVID-19 than female.©2020 JNSMR UIN Walisongo. All rights reserved.
Interpretation of external quality assurance results on liver function test
Authors: Widyastuti Rahma , Purwaningsih Nur Vita , Samsudin Rinza Rahmawati , Arimurti Anindita Riesti Retno
Published: August 2022

The quality of laboratory examination results must always be guaranteed in the sense that it can provide a level of accuracy and precision that can be accounted for. Therefore, a study of External Quality Consolidation (PME) was conducted. The purpose of this study was to describe the results of External Quality Monitoring in the field of clinical chemistry parameters of Serum Glutamic Oxalocetic Transaminase (SGOT) and Serum Glutamic Pyruvic Transaminase (SGPT) at the Public Health Center Laboratory in the Surabaya area. The population in this study was a health center in the area of the Surabaya City Health Office with a sample of 15 health centers that had examinations in the field of clinical chemistry. The sample used in this study was normal level control serum which was measured on the parameters of Serum Glutamic Oxalocetic Transaminase (SGOT) and Serum Glutamic Pyruvic Oxalocetic Transaminase (SGPT). The results of data analysis showed that the percentage of PME levels of SGOT with good VIS criteria was 73.33%, sufficient criteria was 0%, less criteria was 6.67%, poor criteria was 20%. While the SGPT parameters good criteria are 53.33%, sufficient criteria are 33.33%, less criteria are 13.33%, poor criteria are 0%.©2020 JNSMR UIN Walisongo. All rights reserved.
The effect of Sargassum binderi alginate extract addition on the nutritional content of full cream Mung Bean Milk and its consumer acceptance
Authors: Latifah Rais Nur , Az Zahro Putri Rahmawati
Published: August 2022

Milk is one of the important nutritional components that consumed by children and adults. Mung Bean (Vigna radiata L.) contains high nutrition and functional compounds, as well as high nutrients content that the body needs. Mung Bean milk is processed into full cream Mung Bean milk with alginate addition. Variations of alginate addition are 1%, 1.5%, 2%, 2.5% and 3% (w/v). Characterization of full cream mung Bean milk is analysis of the viscosity, density, nutritional, total fiber content, and organoleptic analysis. Alginate is a heteropolysaccharide that has two monomers. The color of alginate is brown. The result of research in density and viscosity of the alginate are 1.43 g/mL and 7.42x10-3 kg m-1 s-1. The best composition for addition alginate to full cream Mung Bean milk is 3% (w/v).  The result of the best full cream Mung Bean milk of carbohydrate, protein, fat, and total fiber content is 98 mg carbohydrates/mL milk; 0.97% in 5 mL milk; 0.32 mg fat/mL milk and 13.1 mg/mL milk. Organoleptic analysis of 3% (w/v) addition alginate in full cream Mung Bean milk is like category.©2021 JNSMR UIN Walisongo. All rights reserved.
Analyzing causes of the death of Ferns (Pteridophyta) in the Padang Savana, Taman Nasional Bromo Tengger Semeru (TN-BTS)
Authors: Purnomo Eko , Izzati Nilana , Hikmah Robbi Mauizzatul , Rusydina Diyana Sabila , Fauzi Lathifah Nurul , Romawan Ibnu Sina Rafiq
Published: August 2022

The Padang Savana area of Bromo Tengger Semeru National Park (TN-BTS) is located at an altitude of 750-3676 m above sea level so that it has a high biodiversity with a distinctive vegetation character. Ferns (Pteridophyta) is one of the vegetation that dominates about 35% of the Bromo Conservation Area. The ferns in the location show a dry and dead physical condition. This study aims to analyze the causes of death of ferns (Pteridophyta) in the Padang Savana Bromo Tengger Semeru National Park. The research method used is a qualitative descriptive method and the data obtained from direct observation to the savanna of Bromo Tengger Semeru National Park (TN-BTS) and face-to-face interviews without guidance to resource persons. The sampling location is at an altitude of 2026 masl, temperature 24.4°C, air pressure 792.5 HPA, with the object of research in the form of a sprig of ferns (Pteridophyta) complete with dead leaf roots and is considered to represent all ferns (Pteridophyta) in the savanna. The data obtained from the resource persons were then analyzed using literature studies. The results showed that the death of ferns (Pteridophyta) was caused by several factors such as the presence of allelopathic substances produced from Imperata cylindrica, soil texture, and eruption disasters. Thus, the surrounding environment is very influential on the life of ferns (Pteridophyta) The results showed that the death of ferns (Pteridophyta) was caused by several factors such as the presence of allelopathic substances produced from Imperata cylindrica, soil texture, and eruption disasters. Thus, the surrounding environment is very influential on the life of ferns (Pteridophyta) The results showed that the death of ferns (Pteridophyta) was caused by several factors such as the presence of allelopathic substances produced from Imperata cylindrica, soil texture, and eruption disasters. Thus, the surrounding environment is very influential on the life of ferns (Pteridophyta). ©2021 JNSMR UIN Walisongo. All rights reserved.
The application of Seismic Coefficients in simple earthquake-resistant houses
Authors: Sutrisno Sutrisno , Budiono Agus
Published: August 2022

After an earthquake, reconstruction and rehabilitation are often carried out. One of them is by building a simple house. A simple house is the one built without involving construction experts, and hence it rarely follows earthquake-resistant building regulations. This study aims to determine and apply seismic coefficient in the planning of earthquake-resistant, simple houses. The seismic coefficient calculation is applied by comparing the maximum ground acceleration with gravity in cities in three provinces, namely Banten, DKI Jakarta, and West Java. From the calculation results in 21 cities in 3 provinces, the obtained seismic coefficient ranges from 0.175 to 0.411. The smallest seismic coefficient occurs in Indramayu, while the largest seismic coefficient occurs in Sukabumi. Based on the seismic coefficient, the level of earthquake risk for simple house buildings can be known. The lowest risk level occurs in Indramayu with the value of 17.5% and the highest risk level is in Sukabumi with the value of 41.1% of the standard price of a simple house building in each city. The risk level difference from one city to another can be used to strengthen and save the cost of building simple, earthquake-resistant houses.©2021 JNSMR UIN Walisongo. All rights reserved.
Shrimp cracker industrial wastewater treatment with aerobic biological properties utilizing modified Contact-Stabilization method
Authors: Santi Sintha Soraya , Wahyusi Kindriari Nurma , Sumada Ketut , Muljani Srie
Published: August 2022

The prawn cracker industry is one of the most common types of food industry in Indonesia. The existence of this industry has a positive impact in maintaining and improving the Indonesian economy, but it can also have a negative impact on the environment in particular, because this industry produces wastewater which can have a negative impact on the aquatic environment if the wastewater is directly discharged into the river. Based on the results of the analysis of the quality of wastewater from one of the shrimp cracker industries, it is known that wastewater contains Chemical Oxygen Demand (COD) which is 3446 mg/L, Biological Oxygen Demand (BOD) 1118.9 mg/L and acidity (pH) 5.88 – 6.13. Referring to the wastewater quality standards for the shrimp cracker industry, namely COD: 120 mg/L, BOD: 50 mg/L, and acidity pH: 6-9, the shrimp cracker industrial wastewater must be treated first before being channeled into the body. river receiving water. In this study, the treatment process used is an aerobic biological process with a modified contact-stabilization method. This method is the development of the contact-stabilization method, where in this modified method the wastewater from the treatment is recycled to the stabilization tank and together with the bacteria is transferred to the contact tank. Variations carried out in this study are the incoming wastewater flow rate (liters/hour): 4,5 ; 5.5; 6.5 ; 7.5 and 8.5 and flow rate of recycled water from treatment to stabilization tank (%) : 10 ; 20 ; 30 of the incoming wastewater flow rate. The best results were obtained at the wastewater flow rate of 5.5 liters/hour and the recycled water flow rate from the treatment to the stabilization tank 20% with a decrease in the COD value of 97.3% and BOD of 98.4% and the pH of the treated water 6.9.©2021 JNSMR UIN Walisongo. All rights reserved.
Numerical analysis of key structural parameters of ejector for PEMFC system under low power conditions
Authors: Zhang Tao , Wang Lin , Dong Zhaopeng , Zhou Xiaojun
Published: August 2022

In this study, a three-dimensional numerical model of an ejector is established, which is based on a 40 W power proton exchange membrane fuel cell (PEMFC) system. Computational Fluid Dynamics (CFD) technique is used to analyze the ejector in low power condition. The effects of two key structural parameters (distance from the mixing chamber to the nozzle and the mixing chamber diameter) on the ejector performance at different currents are investigated. It is found that ejector entrainment ratio changes slightly with the distance from mixing chamber to nozzle. The ejector entrainment ratio increases first and then decreases with the mixing chamber diameter. Moreover, with the increase of mixing chamber diameter, the turbulent kinetic energy and turbulent dissipation rate decrease obviously.
Study on the influence of wheel polygon on the vibration characteristics of bogie system
Authors: Niu Zhihui , Pang Fangchao , Zhang Xinfeng , Du Tianqiang , Su Jian
Published: August 2022

As one of the important core components of train running parts, the wheel rail related force will directly affect the vehicle running performance and passenger comfort. Take a high-speed train as the research object, the vehicle track coupling dynamic model is established. The influence of wheel polygon on the vibration characteristics of bogie system is analyzed through simulation. The results show that when the wheel polygon wear occurs, the effective value of lateral acceleration of polygonal wheel set axle box is about 18.9 % higher than that of normal wheel set axle box; at the same speed, with the increase of the wave depth of the wheel polygon, the effective values of the transverse and vertical acceleration of the axle box gradually increase; the effective value of axle box vertical vibration acceleration caused by wheel polygon with different amplitude increases first, then decreases and then increases with the change of vehicle speed. The effective value of axle box transverse and vertical acceleration caused by wheel polygon increases with the increase of wave depth or polygon order; the analysis shows that the polygonal wear of the wheel has a great impact on the vibration characteristics of the axle box and can cause the high-frequency vibration of the axle box.
Study on optimization of jet forming of tandem shaped charge warhead
Authors: Han Zeyan , Ji Chong , Wang Xin , Wang Yuting , Wu Gang , Zhang Long , Zhu Haojie
Published: August 2022

In order to greatly improve the length of shaped charge jet and optimize the jet forming performance, the forming process of a tandem shaped charge structure with reverse detonation mode was numerically simulated. The effects of the rear and front stage liner thickness on the jet length, jet head velocity, jet kinetic energy and energy conversion rate were analyzed respectively using LS-DYNA finite element analysis software. Then the optimal thickness of the front and rear stage liner of the tandem shaped charge structure was optimized, and the jet length was measured. Under the condition of charge diameter of 200 mm, when the liner thickness was 0.02CD (charge diameter) for K-charge and liner thickness was 0.25CD for the front stage warhead, the jet forming was stable and the length is the longest. After the two-stage warhead was detonated in reverse order (the initiation delay time was 220 μs), a tandem jet can be formed, and the effective jet length (excluding the pestle body) is 65 % higher than that of the later stage charge.
The use of ultrasonic vibrations in an innovative freeze-drying apparatus equipped with physical screen
Authors: Baronins Janis , Strautmane Diana , Rautmane Aija , Strautmanis Guntis , Strautmane Valentina
Published: August 2022

The article's authors examined the possibilities of intensifying the lyophilization process in an innovative sublimation device with the help of ultrasonic vibration. The introduction of lyophilization technology on an industrial scale began relatively recently. Manufacturers widely used this technology to process high-value food products, primarily berries, vegetables, and fruits. The purpose of freeze drying is to reduce the products' mass and preserve the product’s properties for a long time. Lyophilization involves the removal of water from the frozen product, sublimation, and desorption under high vacuum conditions. The process aims to obtain the desired residual moisture value in the final product. However, the process implementation is associated with large consumption of the required energy. The high energy costs and long time needed for lyophilization make it an expensive process compared to other drying technologies, especially in the case of freeze-drying fishery products. Therefore, the authors propose introducing ultrasonic vibrations to the product with the help of an advanced pin to create fine ice crystals inside target bodies and speed up the sublimation process without significantly impacting aesthetic properties.
Genetic engineering – construction of a network of four dimensions with a chaotic attractor
Authors: Samuilik Inna
Published: August 2022

Systems of ordinary differential equations (ODE) of special form are considered in this paper. These systems appear in various models of genetic regulatory networks and telecommunication networks. The model of a genetic network with a chaotic attractor of dimension four is constructed. Geometrical considerations are used to study the properties of the systems. Computation of Lyapunov exponents is used to prove the existence of chaotic attractors. Problems of control and management of such regulatory systems are challenging issues in the theory of genetic networks.
A new frequency estimation method for a real-valued waveform with multiple sub-Nyquist channels based on the ESPRIT algorithm
Authors: Wang Lulu , Liu Shang
Published: August 2022

Real-valued waveform frequency measurement problems are often encountered in signal processing and they can be solved by designing a linear system. However, they require the sampling frequency to reach twice the maximum of the measured frequency, that is, to meet the Nyquist condition, which in many cases cannot be satisfied considering the hardware limitation. Therefore, how to design a nonlinear method to reconstruct the signal frequency is of great significance. To solve the frequency estimation problem for a real-valued waveform with sub-Nyquist channels, we propose a frequency estimator based on multiple sub-Nyquist channels. Our algorithm mainly consists of the following parts: 1) Calculate the folded frequencies which are lying on the first Nyquist region for each channel based on ESPRIT. 2) Reconstruct the signal frequency by a search method according to the set of folded frequencies. Finally, the simulation results verify the good performance of our proposed algorithm.
A deep learning-based approach for automatic detection of concrete cracks below the waterline
Authors: Orinaitė Ugnė , Palevičius Paulius , Pal Mayur , Ragulskis Minvydas
Published: August 2022

Convolutional neural networks have been created as deep learning-based approaches to automatically analyze photographs of concrete surfaces for crack diagnosis applications. Although deep learning-based systems assert to have extremely high accuracy, they frequently overlook how difficult it is to acquire images. Complex lighting situations, shadows, the irrationality of crack forms and widths, imperfections, and concrete spall frequently have an influence on real-world photos. The focus of the published research and accessible shadow databases is on photographs shot in controlled laboratory settings. In this research, we investigate the challenging underwater optical effects settings and the complexity of image classification for concrete crack detection. This research elaborates on difficulties encountered when using deep learning-based techniques to identify concrete cracks when optical effects are present. To improve the precision of automatically detecting concrete cracks on underwater surfaces, new optical effect augmentation techniques have been developed.
Uçucu Kül Esaslı ve Cüruf Katkılı Geopolimer Betonların Mekanik ve Durabilite Özelliklerinin Araştırılması
Authors: YAZICI Nisa , KARAGÖL Fatma
Published: August 2022

Bu çalışmada, uçucu kül (UK) ve yüksek fırın cürufunun (YFC) geopolimer betonların basınç dayanımı ve durabilite özellikleri üzerindeki sinerjik etkisini araştırmak için alümino-silikat kaynağı olarak UK ve YFC ve aktivatör olarak NaOH ve Na2SiO3 seçilmiştir. Bağlayıcı olarak %100-0, %80-20, %70-30, %60-40 ve %50-50 oranlarında uçucu kül ve yüksek fırın cürufu kullanılarak 5 geopolimer farklı beton grubu üretilmiştir. Yapılan ön deneyler neticesinde, geopolimer beton numunelere 90°C’de 72 saat ısı kürü uygulanmıştır. Üretilen numunelerin 3, 7, 28 ve 90 günlük basınç dayanımları tespit edilmiştir. Durabilite deneyleri kapsamında 28 günlük numuneler 200°C, 400°C, 600°C ve 800°C olmak üzere 4 farklı yüksek sıcaklık etkisine maruz bırakılmıştır. Yüksek sıcaklıktan sonra numunelerin basınç dayanımı, kılcal su emme katsayıları, ağırlık değişimleri ve ultrasonik ses hızları tespit edilmiştir. İçyapı analizi kapsamında yüksek sıcaklık etkisinden sonra SEM analizi yapılmıştır. Sonuç olarak uçucu kül esaslı geopolimer üretiminde cüruf eklenmesi ile betonun mekanik ve durabilite özellikleri gelişmiş ve daha yoğun bir mikroyapı elde edilmiştir. Yüksek sıcaklık etkisinden sonra tüm karışımlar içinde en yüksek basınç dayanım sonuçları %50 cüruf içeren karışıma aittir.
Heavy metal assessment of groundwater quality in part of Karu, Central Nigeria
Authors: Kana Aisha Abubakar
Published: August 2022

Assessment of groundwater quality remains essential in water management; anthropogenic practices such as industrial and agricultural activities can have negative impacts on groundwater quality. The present study assessed heavy metal contamination of groundwater in Karu, Central Nigeria. Heavy metal was evaluated by the indices: degree of contamination, heavy metal pollution and evaluation. Groundwater was found to be significantly contaminated with heavy metal concentrations exceeding the WHO limit for drinking water, particularly around areas of poultry farming, dumpsite and dimension stone quarry and processing plant. Groundwater is therefore considered unsafe for not only drinking purposes but also poultry. Strong correlation was observed between the degree of contamination and heavy metal evaluation index; between Pb, Fe and all indices; between TDS and Pb; Pb and Fe, Fe and Zn, Zn and Cu, Ni and Cu/Zn. The elements Pb, Zn, Cu, Fe and Ni contribute significantly to the contamination observed relative to the others. Groundwater contamination is attributed to anthropogenic activities within the study area; therefore, waste disposal practices require modification. The study presents a case for environmental (both baseline and impact) assessment and continuous monitoring to control pollution of groundwater.
trabalho de cozinheiras, cozinheiros e chefs em cozinhas profissionais: reflexões a partir da perspectiva de gênero
Authors: Ulisses Frade dos Reis Cecília , Shizue Massukado-Nakatani Márcia
Published: August 2022

O objetivo do presente estudo é refletir sobre o trabalho em cozinhas profissionais a partir da perspectiva de gênero, com referencial teórico baseado nos estudos feministas. Esta pesquisa se justifica pela representatividade do setor de alimentação perante as demais Atividades Características do Turismo (ACTs), além da contribuição com o campo de estudos de gênero no Turismo. Foi utilizada metodologia qualitativa por meio da realização de entrevistas com cozinheiros, cozinheiras e chefs com experiência na alta gastronomia. A análise das entrevistas permitiu considerar a percepção dos entrevistados e entrevistadas quanto às diferenças entre cozinha doméstica e profissional. Além disso, demonstrou uma série de dificuldades comuns a homens e mulheres advindas da rotina de trabalho, como: longas jornadas laborais; dificuldade de conciliação da vida pessoal com a profissional; e demanda por disposição física e mental. Apesar desses pontos em comum, as concepções binárias de masculino e feminino repercutem de maneira mais desafiadora para as mulheres, como por exemplo, o frequente julgamento de serem incapazes de trabalhar na cozinha profissional, além da cultura de normalização do assédio associada ao arquétipo do chef de cozinha bad boy/rock star. Contudo, tais concepções de gênero não estão cristalizadas, mas em disputa, conforme relataram as entrevistadas ao apontarem os limites de sua profissão, mas, por outro lado, provarem ser, de fato, capazes de atuar nessa área. Conclui-se, portanto, que, em larga medida, as concepções tradicionais de masculinidade e feminilidade pautam as relações entre esses profissionais.