bluuebunny/crossref_metadata_2025 huggingface dataset:
Simulation of Surface Plasmon Resonance Biosensor Based on Nanoparticle Coreshell in 633 nm
Authors: Widayanti Widayanti , K Abraha , A.B Utomo
Published: April 2021

In this research, we developed the modeling and simulated the biosensor based on Surface Plasmon Resonance (SPR) phenomenon which detected the analyte i.e DNA. This SPR biosensor consists four layers where one of thus layers is the composite material. This nanocomposite spherical nanoparticle consisting of a spherical Fe3O4@Au core covered by Au shell, were applied as active material for DNA detection in 633 nm. Here, we present the simulation of detection amplification technique through Attenuated Total Reflection (ATR) spectrum. Here, SPR system using the Kretschmann configuration, whereas the dielectric function determination of composite coreshell nanoparticle using Effective Medium Theory approximation. Finally, the reflectivity calculation was investigated by varied the size of the core and the shell of the coreshell. The refractive index of the prism is 1,723; the refractive index of 40 nm Ag thin film is 0.13455+3,98651i and the refractive index of the composites were variated dependent the size of nanoparticle coreshell. Our results show that by varying the radius of core and shell thickness, the peak of the reflectivity (ATR spectrum) was shifted to the different angle of incident light. From its result, we can conclude that the addition of coreshell in SPR biosensor leads to enhancement the biosensor sensitivity in DNA detection.
Analysis of Erosion Hazard at Gagakan Sub-Watershed, Blora District, Central Java Province, Indonesia
Authors: Auliyani Diah , Basuki Tyas Mutiara
Published: April 2021

Availability of soil erosion data is crucial for recovering carrying capacity of a degraded watershed. This study aims to analyze the level of soil erosion hazard in Gagakan Sub-Watershed, located at the downstream of Solo Watershed. Slope steepness of this area vary from very steep at the upper part and flat at the downstream. The dominant land cover is teak forest which consists of young and old stands. The level of soil erosion hazard was calculated by USLE (Universal Soil Loss Equation) and then analyzed spatially using GIS (Geographic Information System). The degree of erosion hazard was classified into five classes, i.e very slight, slight, moderate, severe, and very severe. The results showed that erosion hazard level of Gagakan sub-watershed ranged from very slight to very severe. The dominant is very slight (69%), while the others classified as slight (11%), moderate (15%), severe (1%), and very severe (4%). The countermeasures of soil erosion should be focused on the area with severe and very severe level of erosion hazard.
Electrical Resistivity Tomography Techniques for Identifying Groundwater Pollution Due To Leachate flows at Putri Cempo Landfill
Authors: Harjito Harjito , Suntoro Suntoro , Gunawan Totok , Maskuri M.
Published: April 2021

Landfill developed with open dumping system and below the adequate standard potentially lead to new problems like those found at Putri Cempo Landfill in Surakarta City. They include leachate, which easily flows in runoff, seeps through soil and land surface, and infiltrate into groundwater that supplies the surrounding residential wells. A research on leachate spread pattern from landfills to their surrounding areas thereby becomes necessary particularly in terms of environmental pollution potential from underground, which is latent and difficult to monitor. The aims of this research were (1) to identify the areas that experienced groundwater pollution due to leachate flows, (2) to identify the distribution of resistivity in these areas, and (3) to develop a model for leachate management. This research used Electrical Resistivity Tomography (ERT) survey for identifying the distribution of resistivity in polluted areas. It also used groundwater quality analysis for validating the interpretation of the ERT survey results. The results of the research showed that there was an anomaly in the subsurface layer. Materials with resistivity values of 0.25-1.20 ohmm were found in various depths within 0-8 m below the surface. These values were much lower than the resistivity of the main materials found at the measurement site, i.e. 4.9-13.1 ohmm. Accordingly, this anomaly signified the existing influence of pollution. The pollution along the geoelectrical sounding line had uneven distribution and centric pattern at several points that indicated the accumulation sites of leachate. The proposed leachate management model included the constructions of base lining (liner), leachate collection channel, geomembrane-composed final cap, and leachate treatment.
Detection System Design for Cu Contaminated Water Based on Red Diode Laser and LDR (Light Dependent Resistor) Sensor
Authors: Rakhmadi Frida Agung , Zahroh Hikmahtuz
Published: April 2021

The research on making detection system of Cu contaminated water based on red diode laser and LDR sensor has been done. The purpose of this research was to know the characteristic of LDR sensor, to make the detection system of Cu contaminated water, and to test the detection system of Cu contaminated water. This research was conducted in five phases: characterization of LDR sensor, making data acquisition system, processing and analyzing of train sample data, making detection system, and implementation of detection system on test sample. The result of LDR sensor characterization in this research showed transfer function V = 0,004I + 2,1861 with relation of input-output relation which was very strong (r = 0,99267); sensitivity was 0,004 volt/lux; repeatability was 99,015%, and saturation for the light intensity  ˃ 500 lux. Meanwhile, the succes rate of detection implementation on Cu contaminated water was 97,5%.
Porosity Identification of Carbonate Core Reservoir Using Digital Rock Physics Method
Authors: Sidiq Irsyad Nuruzzaman , Niyartama Thaqibul Fikri
Published: April 2021

Indonesia is an archipelago country so rich with coral reefs that are a major component of the carbonate rock constituents. Where as much as 40% of carbonate rocks in Indonesia is a hydrocarbon reservoir is still rarely done exploration. This is because conventional hydrocarbon exploration technology has not been able to provide detailed information about the physical quantities. Hydrocarbon exploration technologies currently leads on digital technology to know the physical quantities of a reservoir of more detail such as porosity. Porosity which is physical quantities related to the presence of hydrocarbons in the pores of rocks. Digital Rock Physics (DRP) is a digital image-based method as an alternative method to find the physical quantities of rock samples to make it more effective and efficient. This study aims to identify the physical quantity using the method of porosity of the DRP until obtaining porosity of rock core carbonate reservoir by analyzing the binary image of the two rock cores from the same reservoir but has different dimensions to find out the exact core rocks to analyze the value of porosity. Binary image obtained from a scanned image of a projection of rock that has been reconstructed to become the greyscale image and have gone through the process of thresholding. The results of this study showed that the method can identify the physical quantities of DRP porosity and non-damaging rock pore structure (non-destructive). Analysis of the porosity of the rock core with histogram variations performed (by adjustingting the histogram), using the otsu method of thresholding and pixel size of the image has high (5.343750 μm) used to analyze the value of porosity. The porosity values acquired for 18.040 and has precision 96.20%.
Maximal Homomorphism in Fundamental Theorem of Homomorphism Semiring
Authors: Hardiansyah Riski Ryan , Wardati Khurul , Riyanto Muhamad Zaki
Published: April 2021

Semiring is a generalization of ring. Some concepts in ring can be developed in semiring. The contructions of quotient semiring requires a specific ideal, namely Q-ideal. Different to the ring theory, the fundamental theorems of homomorphism on semiring needs a concept of maximal homomorphism, science the kernel of any maximal homomorphism is always Q-ideal.
Design of Vibrate Generator
Authors: Untoro Nur
Published: April 2021

Vibrate generator is an electric generator, which generate electric by a magnet vibration. This research inspired by the discovery of windbelt by Humdinger. The purpose of this research is to prove electric generator with magnetic vibration, to design low rpm vibrate generator. Electric generator in this vibration is simple, expected to be made society with local material. With an energy source from a ditch drainage or wind, this generator are supposed to generate electricity for one house. Major component generators are bar magnets, springs, wire coils, diode, capasitor and wood board. The principle of generator unit is a magnet attached to the spring and the end of the spring attached to the wooden board.  If the spring is vibrated, magnetic vibrations produce a magnetic flux change that penetrates the wire coil who attach beside a magnet. A wire coil penetrated flux magnetic which change with time to produce electro motive force. Every unit generator produce AC and changed to DC by Diode Bridge. The experiment results were one unit cell generator produce 2.2 volt peak to peak, 21.47 Hz, and product duration 0.5second. The design of a low rpm vibrator generator is built from a vibration generator unit arranged and connected in parallel. Each unit vibration generator is vibrated sequentially, in order for a continuous power generation.
Development of Animation-Based Fairy Tales Learning Model for Elementary School Students
Authors: Sunarti Sunarti , Rahmawati Selly , Wardani Setia
Published: April 2021

The purpose of this research is developing an animation-based fairy tale as a teaching model for elementary students.In addition, this study is also intended to determine the effectiveness of animation-based fairy tale as a teaching model. This research type is research of development with subject is elementary students in SD Sonosewu. Methods of data collection used observation, questionnaires and tests. The data analysis technique to be used is quantitative approach with t-test independent sample. Output targets to be generated in the study are: (1) Design of animation-based fairy tales for elementary students developed with 6 steps of research and development i.e. research and gathering, planning, product draft development, initial field trials, revising test results and field trials. (2) An animation-based fairy tale model is effective in improving Civics achievement and Indonesian achievement.
Factors Effected the Performance of Green Building in Madrasah Building Components
Authors: Sedayu Agung
Published: April 2021

Educational institutions in the form of madrasah have been growing rapidly in Indonesia. The madrasah is maneged by government and private institutions. This shows that public trust to madrasah as a place of spiritual and academic learning is increasing. Madrasah are supported by several building facilities in achieving the success of their learning activities. This study aims to determine the factors that influence the performance of green building in the Madrasah Al-Rifaie. A review of the determination of performance factors is green building with a background that green building for the present is a solution to the realization of buildings that do not damage the environment. The research results obtained 10 performance factors including Security, Safety and Healthy, Facilities Function, Aesthetics, Easiness and Accessibility, Reliability, Durability, Comfortable and Regularity, Availability and Capacity, and Environmentally-friendly. The average of the important level of 10 performance factors are in important scale (scale 4). The results of this analysis can be continued at the stage of data collection and further analysis.
Effect of Dehydroepiandrosterone Sulfate on the Modulation of Memory and Learning in Sprague-Dawley Rat Hippocampus
Authors: Shaimi Asma Ulhusna , Abdullah Hasmah , Ismail Zalina , Ahmad Wan Amir Nizam Wan
Published: April 2021

Dehydroepiandrosterone sulphate (DHEAS) is a neurosteroid that is found in greater concentration within the brain rather than in any other body organ (Corpechot et al., 1981) and studies have shown that in the brain, DHEAS has a role in enhancing both learning and memory (Markowski et.al., 2001). This present study investigated the relationship between DHEAS and spatial learning and memory in the rat hippocampus. Male Sprague-Dawley rats were divided into two groups and their spatial learning behaviour was evaluated with the Morris Water Maze. The intensity of DHEAS was simultaneously recorded in real time via the Fiber Fluorescence Microscopy (FFM) S-650 probe of the Cellvisio system. There were significant changes in the swimming pattern of the experimental groups obtained via the Morris Water Maze from day 1 until day 5 and day 6 for the probe test. Meanwhile, it was also seen that the intensity of DHEAS fluorescence increased in parallel to the swimming pattern of the experimental rats in comparison to the control group. The findings suggest that the changes in DHEAS fluorescence has a strong link to both spatial learning and memory.
The Startup for Education in the 4th Industrial Revolution
Authors: Fauziyati Dini
Published: April 2021

According to Merriam-Webster, start-up means “the act or an instance of setting in operation or motion” or “a fledgling business enterprise.” The American Heritage Dictionary suggests it is “a business or undertaking that has recently begun operation.” One thing that can all agree on: the key attribute of a startup is its ability to grow. As Graham explains, a startup is a company designed to scale very quickly. It is this focus on growth unconstrained by geography which differentiates startups from small businesses. Recently Indonesia was shocked by the industrial revolution 4.0. This era was marked by a start-up business. One of the Indonesian youth who successfully released the startup was Umar Usman. He is a student from the University of Indonesia which is International Relations Department with his teacher room finding. Since childhood, Usman aspired to become a teacher. That's why Umar Usman is motivated so that teachers can provide the widest possible benefits so that science and technology-based science findings are needed. From that sense of awe and Umar Usman wanted to give something to the teachers and students namely the teacher room application. This study t ries to dig up information with literature review to find out how startups in education and their contribution to education.
Testing Carbohydrate Substance as Flash Based Flipbook Learning Media
Authors: Fadhila Nida Ulfia Husna , Sulistiyawati Sulistiyawati
Published: April 2021

This study aims to produce a flash-based flipbook and find out the quality of flash-based flipbook products that are suitable for use as supporting learning media. The study consisted of preliminary research in the form of carbohydrate test practicum consisting of barfoed test, benedict test and iod / lugol test. The results of the study were developed into flash-based flipbook using macromedia flash and microsoft word 2010 through the data entry stage to the developer software, preparation of layouts and provision of activities on flash-based flipbook. The final product in the form of flipbook is flash-based. Flash-based flipbook was assessed by 1 material expert, 1 media expert, 1 science teacher, 3 peer reviewers, and tested on 10 junior high school students. The results of the evaluation of flashbased flipbook according to material experts were 90.87% (Very good), media experts 88.10% (Very good), peer reviewers 93.39% (Very good), biology teachers 75.00% (Good) , and 85.6% (Very good) student response. Based on this assessment, the flash-based flipbook that was developed is worthy of being used as a source of learning biology.
Comparative Study of Paradigm on Science: Holistic View by Frithjof Capra and Knowledge Formulation by Yuval Noah Harari
Authors: Santi Selvia
Published: April 2021

An paradigm of science, since the beginning of the formation of scientific formulation, it has always undergone a change, as well as Thomas Kuhn's scientific revolution theory. The paradigm is always tested with new theories until finally the obsolete paradigm is no longer used or is still partially used. At first the mechanistic paradigm introduced by Isaac Newton has long been a basic reference. But then, this paradigm is tested by the many problems of science, especially physics that no longer cannot be solved with this paradigm. The paradigm problem is a long search process because the paradigm not only regulates the workings of science in the laboratory, but also determines the results that have a significant impact on humans. The process of finding new paradigm is being pursued by two figures to be discussed, Fritjhof Capra and Yuval Noah Harari. Both give more attention to the paradigm of modern science that is unable to answer new challenges. Capra provides a new paradigm solution which he calls a holistic paradigm that seeks to see reality as an integration with a series of inseparable life networks. Whereas Harari, through his two best-selling books, Homo Sapiens and Homo Deus, revealed the latest theories and discoveries in the fields of physics, chemistry, biology to art, from his description he produced a synthesis of paradigm changes in reformulating knowledge which has positive implications for human survival. The method that will be used is the comparative method, thus the thinking of both of them will be abstracted in their similarities and differences of thought. The purpose of this research is to explore the latest science paradigm process proposed by the two figures, Capra and Harari.
Application of Surface Tension Measurement to Determined Saturated Cooking Oil and Unsaturated Cooking Oil
Authors: Dimisa Adi Ahmad , Hanggara Indira Prabawati , Rakhmadi Frida Agung
Published: April 2021

Application surface tension measuring tool to distinguish saturated cooking oil and unsaturated cooking oil has been done. Th is study aims to apply the surface tension measuring tool as an alternative tool for distinguishing saturated cooking oil and unsaturated cooking oil. This study was conducted to distinguish the quality of cooking oil consumption in terms of the number of oil for frying. The method used in this research is the method Torsion Dynamometer conducted in three phases, the first preparation of tools and materials, the second data retrieval, and the third is data processing. The results showed that torsion Dynamometer can be used as a tool to distinguish saturated cooking oil and unsaturated cooking oil. Saturated cooking oil has a value of surface tension γ ± Δγ = (1.6604 ±0.01448) dyne/cm, while for unsaturated cooking oil has a value of surface tension γ ± Δγ = (1.3492 ± 0.03624) dyne/cm.
Checklist of Herpetofauna in Sungai Mudal Park and Kembang Soka Waterfall
Authors: Qusway Ana Ghoyatul , Sifa Itsnaini Fadhilah
Published: April 2021

Herpetofauna in Indonesia is very abundant, one of the richest areas of herpetofauna in Indonesia is in the Menoreh Mountain of Kulon Progo. Girimulyo started pioneering the natural tourist in the Kembang Soka Waterfall and Sungai Mudal Park. In 2012 the diversity in this place was researched by Qurniawan et al. This study aimed for renewing data of herpetofauna. The study was conducted from February to June 2018. This study used VES (Visual Encounter Survey) method, which works in combination with the belt transect method. A total of 22 Herpetofauna species has been found and identified in the Sungai Mudal Park and Kembang Soka Waterfall consists of 9 families, 5 families from the Amphibian class and 4 families from the Reptile class.
Application Measurement Tools of Luxmeter and White Diode Laser as Alternative Methods in Distinguishing Oil Candles Based Mixed the Light Intensity
Authors: Bahirah Anis , Rahmadi Aji , Rakhmadi Frida Agung
Published: April 2021

Research about the application of Luxmeter measuring instrumental with white diode laser to distribute the light intensity in pure or candle-contaminated cooking oil. This research is conducted by varying the range, so the result of intensity value is acquired. The result of research shows that there are differences in the light intensity value of both pure and candle-contaminated cooking oil. The output of measuring instrument in this research shows a different number between pure cooking oil and candle-contaminated cooking oil. Based on the data analyzed, 5 cm range from the Luxmeter sensor is the most sensitive area. From the calculation, the value acquired is 273,1349 ± 0.06 Cd, that means if the reading value is more than that value, the oil is identified as candle-contaminated if less the oil is pure.
Optimization of the Alpha Energy Deposited in Radioluminescence Thin Film for Alphaphotovoltaic Application
Authors: Purbandari Dessy , Ferdiansjah Ferdiansjah , Sujitno Tjipto
Published: April 2021

Activated zinc sulfide (ZnS) is a semiconductor material which able to emit photon in the form of visible light when expose to external energy. The capability of activated ZnS, mainly doped with silver (Ag) and copper (Cu), to convert radiation become light to make  it  potentially  applicable  as  the  radioluminescent  thin  film  for  alphaphotovoltaic-type  nuclear  battery.  One  of the  important specifications of the radioluminescence layer that influences the fluorescence efficiency is the thickness. This work presents a study on the thickness optimization for ZnS:Ag:Cu as the radioluminescent film for alpha particles using Monte Carlo model. Simulation to study alpha particles’ energy deposited by using Stopping and Range of Ions in Matter/TRansport of Ions in Matter (SRIM/TRIM) code. The model examined the transport of 5.485 MeV alpha particles emitted by to determine the best thickness based on energy deposition depth. Based on TRIM module simulation, the optimal thickness for radioluminescence film is approximately 19-22 µm. Most energy from 5.485 MeV alpha particles is deposited in 18.92 µm depth activated zinc sulfide. The results from SRIM/TRIM model then compare with  analytical calculation using Bragg-Kleman rule. The alpha particles stop at 22 µm from the SRIM/TRIM simulation while using Bragg-Kleman formula the alpha particles stop at 23.51 µm.
Tidal Energy Utilization of Larantuka Strait by Dual Tidal Turbines to Increase National Energy Resilience
Authors: Soejianto Eko , Zahra Khansa Hanifa , Hidayah Suci Nur
Published: April 2021

Currently, renewable energy can only support 5% of national energy needs. Meanwhile, in 2035 renewable energy targeted to sustain 14% of total national energy demand. The proper way for optimizing the renewable energy is needed to actualize the target. Tidal energy as one of the potentials that are still being developed and need more attention from the government. Tidal can be used for natural energy resource since it has zero emission, produce big energy, and has no impact to weather. Larantuka Strait located in Flores island, Nusa Tenggara Timur province can produce tidal velocity up to 2.859 m/s with water density as much as 1.025 gr/cc.  In utilizing this energy, we use new innovation by using dual tidal turbines which placed at the foot of Palmerah Bridge. The construction of Palmerah Bridge is built both by the government of Flores Island and Adonara Island. Dual tidal turbines are more efficient than singl e turbine by reason of tidal that has passed through the first turbine can be used again for the second turbine. The using of the generator is meant to convert kinetic energy that produced by dual tidal turbines. To convert ocean currents into electrical energy optimally, it is necessary to plan turbine designs that are in accordance with the conditions of ocean currents and the surrounding environment such as current velocity, wind influences and so on. Horizontal-axis tidal turbine (HATTs) is one of the technologies that are being developed and tested in prototype form by several companies, an efficient blade design is very important for the success of the HATTs. The amount of turbine needs, in this case, is 15 turbines with each turbine’s length is 10 meters. The turbines installed in bridge’s column along 800 meters. Estimate electricity can be generated by the turbine is 1.48 Mega Watt (MW).
Liquid Drop Model for Investigating the Outer Crust of Neutron Star
Authors: Fitrishia Feni , Sulistyani Eko Tri , Budhi Romy Hanang Setya
Published: April 2021

The properties of outer crust of cooling neutron star by using Liquid Drop Model approximation has been studied. Th is mass model is used to derive the properties of outer crust of neutron star matter such as total energy of system, equation of state (relationship between pressure and density), and composition of the outer crust. The properties of the outer crust are studied under the assumption that neutron star has created for long time and the matter in neutron star is in its ground state. The composition of the outer crust consists of ions Z arranged in a lattice and free electrons e, so that the total energy of the system consists of three contributions: the mass-energy of the nuclear, the energy of electrons and lattice. The equation of state (the relationship between pressure and density) shows that the pressure increases with increasing density in the outer crust layer. With a simple model based on liquid drop model, it is known that the outer crust is composed of nuclei which are at Z ≈ 20-50, with 56Fe core at the upper layer, and 154Cd core at the lowermost layer of the outer crust.
Design of Data Acquisition System for Green Laser Photoacoustic Spectroscopy Using Audacity Software
Authors: Rakhmadi Frida Agung , Mitrayana Mitrayana , Pangestu Gilang Kurniawan Dian
Published: April 2021

Research on design of data acquisition system for green laser photoacoustic spectroscopy has been done. The purpose of this research was to create and test data acquisition system for green laser photoacoustic spectroscopy. The system was created with ATR 3350iS microphone as signal detector and audacity software as data recording and processing. The testing was conducted in four phases, firstly testing the system without laser, secondly testing the system with non-modulated laser, thirdly testing the system with modulated laser without a sample, and finally testing the system with modulated laser to wood sample. The result showed that there weren not any photoacoustic signals detected in condition of without laser and with non-modulated laser. Meanwhile, in the condition of modulated laser without sample and with the sample of wood, the data acquisition system detected photoacoustic signals in the range of laser modulation frequency was 1000 – 9981 Hz.
Identification of Landslide-Prone Subsoil Using Wenner Configuration Geoelectric Method in Gayamharjo Village, Prambanan District, Sleman Regency
Authors: Tihurua Najila , Niyartama Thaqibul Fikri , Setyaningrum Yunita Eri , Uyun Qurrotul
Published: April 2021

Landslides occur due to the field of slip. Identification of Soil Landslide Identification Using Geolistrik Method The Wenner configuration has been done in Gayamharjo Village, Prambanan Sub-district, Sleman District. This study aims to determine the structure of subsurface rocks and identify the field of ground slip in the landslide prone areas in the study area. Measurements were made as many as 3 trajectories, the smallest spaced between 20 meters electrode with 300 meters of track length. The tool used is Syscal Jr Switch-48. Data processing uses RES2DINV software that produces 2D subsurface modeling. The results of the interpretation showed that th e location of the study identified the constituent rock consisting of three layers of subsurface rocks (1,36 to 6,86) Ωm, sandstone (15,4 to 34,6) Ωm, and andesite rocks (77, 8 to 393) Ωm. In the three trajectories of the research area, there is a slip field with th e potential for landslide: track 1 at point 40 s.d.80 with a depth of 37 m, track 2 at point 220 s.d. 240 with depth 26 m, path 3 at point 100 s.d. 140 with a depth of 37 m.
Resistance Characteristics of Soil Fertility
Authors: Alfiani Nofita , L Koddam Rukadi , Rakhmadi Frida Agung
Published: April 2021

Fertile soil is an important indication to support plant growth. The more fertile a soil then plant growth, the better. In this study, the method used is to measure the resistance of different types of fertilizer are manure, compost. Because different forms of land then the resistance will also vary according to the shape of the land. The results obtained are cage fertilizer that has the smallest resistance is 39.7 Ω and 33.6 Ω whereas compost and 35.4 Ω 41.9 Ω. The benefits of this method were to determine the resistance or resistance from the ground. So the lower the ground obstacles, the more fertile the land. Conversely, the higher the resistance of the soil, the more the soil is not fertile.
Histological Study of Rete Testis and Ductuli efferentes of Rabbit (Oryctolagus cuniculus)
Authors: Rakhmiyati Rakhmiyati , Luthfi Muhammad Jafar
Published: April 2021

The testes produce sperm cells through the spermatogenesis process that occurs in the complex system ducts starting form seminiferous tubules to vas deferens. Testis has a very complex part to support sperm cell production. Sperm cells that have been formed through the process of spermatogenesis will move towards the lumen in the seminiferous tubules. Then the sperm cells will pass through the rete testis tissue, then to ductuli efferentes to arrive at the epididymis for the process of maturing sperm. Anatomical studies on seminiferous tubular tissue and epididymal organs have often been carried out, but there is still very little observation data on rete testis and ductuli efferentes in rabbits. The method used in this study was the paraffin method with hematoxylin-eosin (HE) staining. The observations showed that the structure of the testicular rete channels had thin walls compared to the seminifous tubule channels. Ductuli efferens is a channel between of rete testis and epididymis.
Anatomical and Histological Study of Male Uropoetic Organs of Common Rabbit (Oryctolagus cuniculus)
Authors: Farhana Sindi , Wibowo Fathin Azhari
Published: April 2021

Common rabbit or European rabbit (Oryctolagus cuniculus) is one of the mammals that belongs to the order Lagomorph. The study of uropoetic organs in adult male common rabbit included the anatomical and histological description at the light microscope level by using Hematoxyline and Eosine stain methods. The aims of this study was to determine the anatomical and histological featu res of male Oryctolagus cuniculus. Uropoetic organs of adult male common rabbit consists of four organs that is kidneys, ureters, bladder, and urethra. The result showed that Oryctolagus cuniculus have a bean-shaped kidney. The length of the right kidney is 3,4 cm and the width is 1,9 cm while the length of the left kidney is 3,2 cm and the width is 1,8 cm. The histological study showed that common rabbit kidne y consists of glomerulus, Bowman’s capsule, proximal tubules, distal tubules, and collecting ducts.
Effect of Aeration Treatment on Methylene Blue Removal Using TiO2-Zeolite
Authors: Pratama Nanda Alzeta , Artsanti Pedy
Published: April 2021

Effect of aeration treatment on Methylene Blue (MB) removal using TiO2-Zeolite has been investigated. The TiO2-Zeolite was prepared by mixing activated zeolite and TiO2 in absolute ethanol. This composite was characterized using Fourier Transform Infrared (FT-IR) and X-Ray Diffraction (XRD). The MB removal was monitored spectrophotometrically. The effect of contact time, composite mass, and aeration treatment on MB removal was observed. Characterization results showed that there was interaction between TiO2 and SiO/AlO of zeolite. The observation of aeration treatment using oxygen exhibited significant improving on MB removal.
SiAlS (Simple Alarm System) Based Light Dependent Resistor (LDR) and Basic Logic Gate as an Attempt to Preventing on Helmet Theft
Authors: Rahmadi Aji , Dimisa Adi Ahmad , Kurniawan Asep , Rakhmadi Frida Agung
Published: April 2021

Research on the Light Dependent Resistor (LDR) and the basic logic gates in the designing and manufacturing SiAlS (Simple Alarm System) as an attempt to Prevent theft helmet on had been done. This research was conducted aiming to create and Characterize alarm system. This study was intended to Prevent theft of the helmet. The method used in this research is divided into three stages, designing, manufacturing and testing. The working principle of this alarm system is when the helmet is mounted in the rearview mirror, the LDR will be closed so that the resistance increases the which causes the alarm to Become inactive. However, if the helmet is taken, the alarm will activate because The resistance decreases. However, the alarm will not work if the sensor cable is cut by the thief. To Overcome this problem, additional circuits are made using a NOT logic gates. The results of this research are prototypes in testing alarm systems and alarm systems get a 100% success rate. The advantage of this alarm systems are cheap and simple, Because it does not use a microcontroller and can be made individually.
Design of Image Processing System on Pressure Varied Using Interferometer Mach-Zehnder
Authors: Abdullah Mujib , Rakhmadi Frida Agung
Published: April 2021

Quantitative analysis and visualization of light becomes very important when we understand the nature of light, namely interference. This also applies to light-darkness conditions (such as the nature of light when an interference phenomenon occurs) and the application of light-propagating light (such as the wavelength traveled by light in the airspace or pressurized space). Because in the nature of light requires experimental observations and program algorithms that utilize the process of analyzing the nature of the light that occurs (interferometer). This study aims to design an image processing system design to obtain qualitative from the nature of light interference. Large quantitative interference ring measurement trials were carried out using the width measurement results on the observation board which varied at pressures of 0, -100, -200, -300, -400, and -500 which were given light sources from the red laser. From the measurement results obtained the difference between rings on the board in the form of area. The area can be compared manually to get the uncertainty of the sidewall fabrication that gives an error in the measurement.
Mouvement religieux transnational ou mobilité de caste indienne ?
Authors: Brun Christelle
Published: April 2021

Les Daudi Bohras forment une communauté commerçante originaire du Gujarat (Nord Ouest de l'Inde). Depuis la fin du XIXe siècle, cette communauté tend à se disperser géographiquement en suivant des opportunités de commerce, en Inde comme en-dehors (Afrique de l'Est, Iles de l'Océan Indien et plus récemment EUA, Moyen Orient). Nous analyserons comment l'identité communautaire, favorable à un réseau d'échanges préférenciel, a été renforcé afin de maintenir une culture particulière. Les Daudi Bohras sont des musulmans ismaéliens, dont la particularité réside dans la dévotion envers une lignée de chefs religieux. Tandis que la communauté entend préserver ce particularisme, elle est toutefois traversée par des doutes et des innovations redéfinissant le statut de l'autorité suprême.
Profesor Stanisław Tabaczyński (1930–2020) – wybitny uczony i intelektualista
Authors: Cyngot Dorota , Kowalewska-Marszałek Hanna , Zalewska Anna Izabella , Minta-Tworzowska Danuta
Published: April 2021

The reason for this article was the 90th birthday of Professor Stanisław Tabaczyński (born on April 1, 1930). However, at the last stage of editorial work, the sad news of his death reached us (November 28, 2020). All the more we would like to commemorate the Professor, recalling his achievements and merits, which place him among the most outstanding Polish archaeologists, including actual members of the Polish Academy of Sciences. He made a great contribution to the development of Polish and world archaeology in the area of theoretical and field archaeological research. Many of his scientific initiatives concerned the theory and anthropology of culture as well as the methodology of archaeological research and the syntheses of prehistory and the early Middle Ages. His achievements and influence on shaping the minds of archaeologists of the 20th century and the beginning of the 21st century cannot be overestimated.
Archeologia odpowiedzialna społecznie. Działania z zakresu public i community archaeology w Polsce
Authors: Pawleta Michał
Published: April 2021

This paper aims to conceptualize the social role of archaeology and archeological heritage in the present. First, it contextualizes the legal and doctrinal background of activities aimed at dissemination of cultural and archaeological heritage and engagement of public in initiatives around that heritage. Next, it describes main forms of outreach activities undertaken by archaeologists in Poland. Further, it presents community-oriented activities and initiatives that go beyond education of the general public about the past and archaeology and strive for engaging local communities in activities centered around archaeology and archaeological heritage. It concludes with a statement that openness of archaeology to society helps to strengthen its current social position, determines its role in the world and attributes social activities of archaeologists with a deeper meaning.
Między Wschodem a Zachodem. Inwentarz krzemienny z osady ludności kultury ceramiki wstęgowej rytej na stanowisku Podlesie 6, woj. świętokrzyskie
Authors: Przeździecki Michał , Szubski Michał , Grabarek Artur
Published: April 2021

Paper presents results of analysis of the assemblage of flint artefacts from the settlement of Linear Pottery culture (LBK) at the site no. 6 in Podlesie, Świętokrzyskie voivodeship. Importance of the site is primarily by its location: on the border of two geographical regions, two geological conditions, two settlement eccentrics of the LBK and two provinces of lithic raw materials. Within the flint assemblage we can distinguish two main classes of lithical artefacts: an internally cohesive collection of 104 obsidian products and a collection of 2069 artefacts made of at least five different types of flint. In the group of siliceous rocks, the most numerous is the Jurassic flint from Cracow area – 53%. Second place in the inventory is occupied by the Światchowski flint, which share reaches the level of 19%. Only slightly smaller are amounts of chocolate flint – 15%.
Pneumatological Ecclesiology and Its Relationship with Permanent Ecclesiogenesis. Selected Aspects.
Authors: Dziewulski Grzegorz
Published: April 2021

The Christological-pneumatological character of post-conciliar ecclesiology, which appreciates the personal-communal (relational), as well as historico-redemptive and eschatological character of the Church, and restores institutional-social dimension of the Church to its proper place in ecclesiology, opens the possibility of extending the traditional approach to the establishment of the Church as a historico-redemptive set of Christ’s actions. Deepened theological reflection on the pneumatological-personal (communio) character of the Church allows us to speak of its permanent personal-pneumahagic process of constant birth in the baptized ones and in the community of faith. Constant presence and influence of the Spirit in the community of the Church and its activities include its offices, evangelizing mission and means of sanctification, but also various gifts (charisms) of the Holy Spirit, as well as development or renewal of the faith life of individual Christians and the community. Aspects of permanent ecclesiogenesis can vary in intensity and form, but they all derive from the influence of the Spirit sent by Christ to His disciples, and are based on the personal, communal, event-oriented (historical) and processual character of faith as communio with Christ and brothers. The forms of permanent ecclesiogenesis can be seen in eschatological Church-directing tension dynamism between ‘already’ and ‘not yet’ of the Kingdom of God, in event-donative nature of faith as a communion with Jesus and its processual character, in life-giving character and fruitfulness of faith, in generating new ecclesial realities, clearly beyond human possibilities, in moving towards the missionary future, theological openness, and universality of the Church.
Accounting Information Systems in Public Sector towards Blockchain Technology Application: The Role of Accountants’ Emotional Intelligence in the Digital Age
Authors: Huy Pham Quang , Phuc Vu Kien
Published: April 2021

This research ferreted out to inspect the interconnection between emotional intelligence (EI), Blockchain technology application (BLO) and the effectiveness of Accounting information system (AIS). Survey-based data obtained from 412 respondents were applied to validate the model hypotheses. Building on the statistical analysis with the support of SPSS 25.0 and SMART- PLS (partial least squares) 3.2.8 software package, the model results inferred the impact of EI on BLO. Besides, the outputs of the study accentuated on the importance of BLO on the effectiveness of AIS. These significant additions will optimistically inspire other scholars to carry on exploring the relationship between EI and BLO in enhancing the effectiveness of AIS in research settings as well as in explaining the results. On the other hand, taking these results into consideration could promote much better solutions for issues relevant to EI and new technology application among public sector organization (PSO) in term of increasing the performance of AIS.
Inertial shrinking projection algorithm with self-adaptive step size for split generalized equilibrium and fixed point problems for a countable family of nonexpansive multivalued mappings
Authors: Olona Musa A. , Alakoya Timilehin O. , Owolabi Abd-semii O.-E. , Mewomo Oluwatosin T.
Published: April 2021

In this paper, we introduce a shrinking projection method of an inertial type with self-adaptive step size for finding a common element of the set of solutions of a split generalized equilibrium problem and the set of common fixed points of a countable family of nonexpansive multivalued mappings in real Hilbert spaces. The self-adaptive step size incorporated helps to overcome the difficulty of having to compute the operator norm, while the inertial term accelerates the rate of convergence of the proposed algorithm. Under standard and mild conditions, we prove a strong convergence theorem for the problems under consideration and obtain some consequent results. Finally, we apply our result to solve split mixed variational inequality and split minimization problems, and we present numerical examples to illustrate the efficiency of our algorithm in comparison with other existing algorithms. Our results complement and generalize several other results in this direction in the current literature.
Warum moralisch sein?
Authors: Kreide Regina , Wesche Tilo
Published: April 2021

In his latest book, Auch eine Geschichte der Philosophie, Jürgen Habermas attempts nothing less than a reconceptualisation of the history of human reason. Why, according to the central question that runs through the book like a red thread, can we, in the face of all social adversities and psychological obstacles, still be morally motivated to stand up for overcoming injustice in the world? This almost classic question about what I can hope for undoubtedly bears Kantian traits. And yet Habermas clearly goes beyond Kant. We argue that this becomes visible, first, in his post-metaphysical conception of motivation, which links individual and collective moral learning processes. The enormous explosive power of this conception comes into its own, secondly, especially against the background of some additional assumptions (trust, grief, open future). Nevertheless, thirdly, the question arises to what extent the Habermasian narrative of progress does not have a blind spot because it is in some sense not dialectical enough. The negative side of reason, which Adorno and Benjamin emphasised, are not included in the progress narrative, or only indirectly, which makes the conception of moral motivation seem weaker than it ought to be.
Islamic Jurisprudence Implementation in Indonesia: Perspective of the Objectives of Islamic Law
Authors: Rohayana Ade Dedi , Muhtarom Ali
Published: April 2021

Islamic jurisprudence (fiqh) is flexible and open to respond to the dynamics of time. This paper aims to reveal the Indonesian Islamic jurisprudence implementation from the perspective of the objectives of Islamic law (maqashid al-syari’ah). Using historical and social analysis, this study finds that Indonesian Islamic jurisprudence has been adapted to the Indonesian people’s cultural values. Here, maqashid al-syari’ah perspective is used to resolve seemingly conflicting arguments and establish laws for the cases which are linguistically not covered within Al-Qur’an and Hadith. The findings of this study imply that the Indonesian Islamic jurisprudence does not contradict the Islamic law sources.
Foliar fertilization of organic sunflower, enhanced yield components and seed yield in the humid tropics
Authors: Olowe Victor I. O. , Fadeyi James , Odueme Patience , Aderonmu Damilare , Otaiku Ayodele
Published: April 2021

In a two year experiment carried out on the organic research plots of the Institute of Food Security, Environmental Resources and Agricultural Research, Nigeria. Two liquid organic fertilizers (ARATI NAWOZ {2.01% N} and ARATI BAJA {1.01% N}) and control were applied to four sunflower varieties (SAMSUN 1, SAMSUN 2, SAMSUN 3 and SAMSUN 4) during the late cropping season (July – Nov.) of 2016 and 2017 to evaluate their agronomic response. The experiment was laid out in a randomized complete block design using a 4 × 3 factorial arrangement in three replicates. Data were collected on plant height at maturity, head diameter and weight, weight and number of seeds per head, 100 seed weight and seed yield. The varietal effect was significant (P < 0.05) on head diameter and weight, and number and weight of seeds per head, and seed yield in 2016. However, during the markedly dry 2017, the varietal effect was not significant for any trait measured. Foliar application of ARATI NAWOZ significantly (P < 0.05) increased height at maturity, the weight of seeds and head per plant and seed yield relative to the control in both years. Significant Variety × Fertilizer interaction effect was also recorded on the height at maturity, head diameter and weight, and seed yield in 2016. SAMSUN 4 (975.6 kg/ha) produced significantly (P < 0.05) higher seed yield than SAMSUN 1 (789.82 kg/ha) and SAMSUN 2 (778.54 kg/ha) in 2016. The efficacy of the application of both fertilizers was on par for most traits in both years. On average, the application of organic fertilizers resulted in a 15.76 and 69.02% increase in seed yield relative to the control in 2016 and 2017, respectively. ARATI NAWOZ and ARATI BAJA appeared promising for sunflower production in the humid tropics.