bluuebunny/crossref_metadata_2025_split huggingface dataset:
Magnetic Properties of Silicon Dioxide (SiO2) from Reed Biomass
Authors: Har N P , Wardani D A P , Hariyanto B , Kurniawati N , Darmawan N , Irzaman  
Published: October 2021

Abstract
Silicon dioxide (SiO2) from reed biomass has successfully synthesized by annealing temperature variation at 500 oC, 600 oC, and 700 oC. The electrical properties of silicon dioxide from reed biomass have been analyzed by LCR-meter. The data collection point of each sample was 200 points. The frequency range of each sample was collected at 50 Hz to 5 MHz, alternating current voltage at 1 V, and alternating current at 50 mA. Then, the magnetic properties have calculated in Vicinity Magnetic Induction (VMI) and magnetic flux. The VMI value result of each sample has calculated at the order of 10-7 – 10-6 tesla and magnetic flux value at the order of 102 - 104 weber. Application of magnetic properties in the form of Vicinity Magnetic Induction (VMI) and magnetic flux of silicon dioxide from reed biomass was the forerunner as a magnetic sensor.
Effect of pH on the Morphology and Microstructure of ZnO synthesized using Ananas comosus Peel Extract
Authors: Rini A S , Rahayu S D , Hamzah Y , Linda T M , Rati Y 
Published: October 2021

Abstract
This research investigated the effect of synthesis pH on the microstructure and morphology of the zinc oxide (ZnO) particles prepared using pineapple (Ananas comosus) peel extract. In this study, ZnO powder were synthesized at different pH, i.e. 8, 9, 10, 11, and 12. ZnO samples were characterized using UV-Vis spectroscopy, Fourier Transform InfraRed spectroscopy, scanning electron microscopy (SEM), and X-ray diffraction (XRD). The UV-Vis absorbances spectroscopy shows the optical absorption peak of the ZnO sample occurred in a wavelength range of 300-360 nm, with bandgap energy of ∼3.22 eV. The FT-IR spectrum shows the peak of Zn-O absorption at the wavenumber of 437.55 cm-1 and the reduction of aromatic compounds with increasing of pH. The micrograph of ZnO particles synthesized at different pH shows that the pH affected the size and shape of ZnO. Micro-sized particles with a granular shape have been found at pH 8, and 9, a spherical shape have been found at pH 10, while micro-sized flower-shaped particles have been found at pH 11 and 12. The XRD pattern reveals a wurzite hexagonal ZnO crystal phase with the hkl plane of (101) as the strongest peak, as well as the purity of the sample increasing as the pH value rises. As the conclusion, synthesis pH has a significant impact on the optical, structural, and morphological properties of ZnO biosynthetic powder.
Millimeter Wave Absorption Properties of Teflon at Frequency Range from 50 GHz to 67 GHz
Authors: Handoko E , Marpaung M A , Fahdiran R , Jalil Z , Alaydrus M 
Published: October 2021

Abstract
In this paper, teflon material with dimensions 3.76 mm×1.88 mm×1.6 mm was prepared from the Indonesia materials market for the millimeter wave characteristics. The permeability, permittivity, and millimeter wave absorption properties were studied using a vector network analyzer in the frequency range of 50−67 GHz. The results indicated that teflon material have a good reflection loss and broadband absorption and a appropriate absorber in the millimeter wave frequency range.
Non-Hermitian gauge field theories and BPS limits
Authors: Fring Andreas , Taira Takano 
Published: October 2021

Abstract
We present an overview of some key results obtained in a recent series devoted to non-Hermitian quantum field theories for which we systematically modify the underlying symmetries. Particular attention is placed on the interplay between the continuous symmetry group that we alter from global to local, from Abelian to non-Abelian, from rank one to generic rank N, and the discrete anti-linear modified CPT-symmetries. The presence of the latter guarantees the reality of the mass spectrum in a certain parameter regime. We investigate the extension of Goldstone’s theorem and the Higgs mechanism, which we demonstrate to work in the conventional fashion in the CPT-symmetric regime, but which needs to be modified technically at the standard exceptional points of the mass spectrum and entirely fails at what we refer to as zero exceptional points as well as in the broken CPT-symmetric regime. In the full non-Hermitian non-Abelian gauge theory we identify the t’Hooft-Polyakov monopoles by means of a fourfold Bogomol’nyi-Prasad-Sommerfield (BPS) limit. We investigate this limit further for other types of non-Hermitian field theories in 1+1 dimensions that possess complex super-exponential and inverse hyperbolic kink/anti-kink solutions and for 3+1 dimensional Skyrme models for which we find new types of complex solutions, that all have real energies due to the presence of different types of CPT-symmetries.
Characteristic influence of exceptional points in quantum dynamics
Authors: Garmon Savannah , Sawada Takafumi , Noba Kenichi , Ordonez Gonzalo 
Published: October 2021

Abstract
We review some recent work on the occurrence of coalescing eigenstates at exceptional points in non-Hermitian systems and their influence on physical quantities. We particularly focus on quantum dynamics near exceptional points in open quantum systems, which are described by an outwardly Hermitian Hamiltonian that gives rise to a non-Hermitian effective description after one projects out the environmental component of the system. We classify the exceptional points into two categories: those at which two or more resonance states coalesce and those at which at least one resonance and the partnering anti-resonance coalesce (possibly including virtual states as well), and we introduce several simple models to explore the dynamics for both of these types. In the latter case of coalescing resonance and anti-resonance states, we show that the presence of the continuum threshold plays a strong role in shaping the dynamics, in addition to the exceptional point itself. We also briefly discuss the special case in which the exceptional point appears directly at the threshold.
Classical Hamiltonian Systems with balanced loss and gain
Authors: Ghosh Pijush K 
Published: October 2021

Abstract
Classical Hamiltonian systems with balanced loss and gain are considered in this review. A generic Hamiltonian formulation for systems with space-dependent balanced loss and gain is discussed. It is shown that the loss-gain terms may be removed completely through appropriate co-ordinate transformations with its effect manifested in modifying the strength of the velocity-mediated coupling. The effect of the Lorentz interaction in improving the stability of classical solutions as well as allowing a possibility of defining the corresponding quantum problem consistently on the real line, instead of within Stokes wedges, is also discussed. Several exactly solvable models based on translational and rotational symmetry are discussed which include coupled cubic oscillators, Landau Hamiltonian etc. The role of

PT

-symmetry on the existence of periodic solution in systems with balanced loss and gain is critically analyzed. A few non-

PT

-symmetric Hamiltonian as well as non-Hamiltonian systems with balanced loss and gain, which include mechanical as well as extended system, are shown to admit periodic solutions. An example of Hamiltonian chaos within the framework of a non-

PT

-symmetric system of coupled Duffing oscillator with balanced loss-gain and/or positional non-conservative forces is discussed. It is conjectured that a non-

PT

-symmetric system with balanced loss-gain and without any velocity mediated interaction may admit periodic solution if the linear part of the equations of motion is necessarily

PT

symmetric —the nonlinear interaction may or may not be

PT

-symmetric. Further, systems with velocity mediated interaction need not be

PT

-symmetric at all in order to admit periodic solutions. Results related to nonlinear Schrödinger and Dirac equations with balanced loss and gain are mentioned briefly. A class of solvable models of oligomers with balanced loss and gain is presented for the first time along with the previously known results.
Non-Hermitian Yukawa interactions of fermions with axions: potential microscopic origin and dynamical mass generation
Authors: Mavromatos Nick E. 
Published: October 2021

Abstract
In this mini review, we discuss some recent developments regarding properties of (quantum) field-theory models containing anti-Hermitian Yukawa interactions between pseudoscalar fields (axions) and Dirac (or Majorana) fermions. Specifically, we first motivate physically such interactions, in the context of string-inspired low-energy effective field theories, involving right-handed neutrinos and axion fields. Then we proceed to discuss their formal consistency within the so-called Parity-Time-reversal(PT)-symmetry framework. Subsequently, we review dynamical mass generation, induced by the Yukawa interactions, for both fermions and axions. The Yukawa couplings are assumed weak, given that they are conjectured to have been generated by non-perturbative effects in the underlying microscopic string theory. The models under discussion contain, in addition to the Yukawa terms, also anti-Hermitian anomalous derivative couplings of the pseudoscalar fields to axial fermion currents, as well as interactions of the fermions with non-Hermitian axial backgrounds. We discuss the role of such additional couplings on the Yukawa-induced dynamically-generated masses. For the case where the fermions are right-handed neutrinos, we compare such masses with the radiative ones induced by both, the anti-Hermitian anomalous terms and the anti-Hermitian Yukawa interactions in phenomenologically relevant models.
Conserved quantities, exceptional points, and antilinear symmetries in non-Hermitian systems
Authors: Ruzicka Frantisek , Agarwal Kaustubh S. , Joglekar Yogesh N. 
Published: October 2021

Abstract
Over the past two decades, open systems that are described by a non-Hermitian Hamiltonian have become a subject of intense research. These systems encompass classical wave systems with balanced gain and loss, semiclassical models with mode selective losses, and minimal quantum systems, and the meteoric research on them has mainly focused on the wide range of novel functionalities they demonstrate. Here, we address the following questions: Does anything remain constant in the dynamics of such open systems? What are the consequences of such conserved quantities? Through spectral-decomposition method and explicit, recursive procedure, we obtain all conserved observables for general

PT

-symmetric systems. We then generalize the analysis to Hamiltonians with other antilinear symmetries, and discuss the consequences of conservation laws for open systems. We illustrate our findings with several physically motivated examples.
Fuzzy Logic Intelligent system for an Automatic medical waste segregation
Authors: Ramani Bai Gopinath V , Dhavarpanah S H , Kangadharan G , Ruzaimah R 
Published: October 2021

Abstract
AUTOM is an acronym given to a commercially designed automatic waste disposal master tool for medical laboratories and clinical waste separation through this research study. In this research, a fuzzy rule-based system is designed which can segregate 24 different waste types which are selected from 8 more common medical waste groups. In the proposed system, after capturing each frame some pre-processing operations are done, features are extracted, fuzzy parameters, fuzzy terms and fuzzy rules are determined and finally a rule with a maximum certification degree is fired. In the designed fuzzy rule-based system 24 roles corresponding to the 24 detectable objects exist, 14 fuzzy parameters are defined, and a maximum of 3 fuzzy terms for each fuzzy parameter have been considered. The system is flexible on different light conditions, view degree of the camera, and 360° object rotation. Our experiments on a real environment and using both new and used wastes have shown up to 94% of better performance of the system developed.
(CSM2-RA-R2-TI): Cyber Security Maturity Model for Risk Assessment Using Risk Register for Threat Intelligence
Authors: Lakshmi Prasanna B , SaidiReddy M 
Published: October 2021

Abstract
Because of the growing frequency sophistication, and severity of cyber security attacks, all businesses should ensure that cyber security risk is properly addressed in their enterprise risk management (ERM) programs. Risk Management, agreeing with the NIST Guide 8286 is the arrangement of “composed exercises to direct and control an association concerning risk”. NISTIR 8286 characterizes a system and framework for hazard the executives. In any case, executing this norm without an in-depth plan can turn into a risk on associations. This paper provides a capability maturity model for risk assessment for threat intelligence using a risk register. This model helps the organization as reference and set clear path to survey risk assessments in accordance with latest threats.
Study on Flexural Behaviour of Reinforced Concrete Beam With Effective Openings
Authors: Sathiyapriya D. , Suganya Devi K. , Sattainathan Sharma A. 
Published: October 2021

Abstract
Reinforced Concrete (RC) beams are essential structural elements that transfer loads from the slabs to the columns through flexure and shear. Openings in Reinforced Concrete (RC) beams are required for a variety of architectural and mechanical reasons. The purpose of this article is to investigate the flexural behaviour of an RC beam with circular openings running the length of it. The three-dimensional nonlinear finite element method was used to investigate a supported RC beam with circular web openings of varying diameters using ANSYS, a finite element software package. The study’s primary characteristic is the variation in diameter and location of reinforcement around the openings. Five RC beams with simple supports were constructed, and tested were conducted under two-point loads. Beams were constructed with one conventional specimen without any openings in beams and two beams with unstrengthen circular openings located in the flexure zone with varying diameters such as 80mm and 100mm considered as a control beam. In contrast, the remaining two beams provided effective diagonal reinforcement around the openings. The load-bearing capacity and load-deflection behaviour of such openings in beams were studied and analysed in detail. To increase the ultimate strength of the beam, effective diagonal reinforcement and short stirrups at the top and bottom of openings are used to prevent the beam from collapsing prematurely.
Solar power based positive output super-lift Luo converter using fuzzy logic controller
Authors: Pavithra K , Pooja H , Tamilselvan D , Sudhakar T D 
Published: October 2021

Abstract
Photovoltaic (PV) power generation is employed to meet the increasing demand for energy and of cleaner form. Though renewable and high energy using PV can be produced, they have certain disadvantages. PV cells have a low voltage (approx. 0.5V) rating and they have to be connected in series when higher voltage is required. These cells when connected in series should have identical electrical characteristics to avoid ripples in the output voltage and current, but it is not possible practically. To avoid this miss-match, converter circuits are employed. The major drawbacks in most power converters are reduced voltage gain and their tendency to generate harmonics in the supply system and the load circuit. To overcome these limitations, a positive output super-lift Luo converter is designed. A Positive Output Super Lift Luo converter (POSLC) is a powerful DC-DC converter where the voltage is converted from positive source voltage to positive load voltage as it produces positive voltages of comparatively higher ranges than those of conventional types. The super-lift technique also overcomes the effect of parasitic elements and thus minimizing the ripples in the output voltage and current. In addition to this, the voltage build-up can be achieved by implementing the super-lift technique where the output voltage rises in geometric progression with increased voltage transfer gain and high power density. In this paper fuzzy control is used to produce better-controlled voltage and a more refined output. The performance of POSLC with and without implementation of fuzzy control has been successfully simulated and verified using MATLAB/SIMULINK as well simulation model also developed and analyzed with Proteus package.
Voice controlled shopping trolley navigation with RFID scanner and live billing using IoT
Authors: Praveen S , Pugalenthiran V , Jaraline Kirubavathy K. 
Published: October 2021

Abstract
The current process of shopping in a mall involves figuring out and navigating to required sections and either carrying a shopping basket or pushing around a trolley. Although it might not feel so but this is a time consuming and for some people, a physically demanding task. The other main disadvantage is having to wait in queues at the cashier and have the items billed in one by one. The proposed system is a Raspberry Pi based device integrated to traditional shopping trolleys. The desired section of the mall is given to it as voice input. Necessary signals are provided to a driver IC which drives the wheels of the trolley through motors towards the required section. The very moment an item is dropped into the trolley, it is scanned by an RFID reader module. The item details and total bill amount to the customer and live update is provided at the checkout through IoT.
Study of Self Depuration Capability of River Pamba
Authors: Aravind Raj P S , Divahar R , Nair Arun R , Aswin S , Bipeesh B 
Published: October 2021

Abstract
The natural waterbody such as rivers and lakes are able to do the purification process themselves, which has the primary dependant of absorption capacity and dissolution capacity of atmospheric oxygen from the surface of the water body. The various pollutants such as biological pollutants and chemical pollutants are broken-down into insignificant strength over a period of time by the growth of certain bacteria. This bacterial growth in the water is possible only with the absorbed and dissolved oxygen content in the water. This absorbed and dissolved oxygen content in the water bodies are based on the velocity of the stream, depth, discharge rate and temperature of the water, thus the self-depuration capacity of the water bodies are depended on the natural profiles and environmental factors of the waterbody and its location. This explains that the turbulent water will get purified by itself in much higher rate than the stagnant water, which tends to become septic because of the oxygen scarcity. The degree of self-depuration of a natural water body is based on the physiochemical and biological activities occurring in the system. Various parameters like basic physical properties, chemical properties such as pH, hardness, dissolved solids, mineral content, BOD, dissolved oxygen for the samples were taken along the Pamba River. The samples are taken from three zones of the Rivers viz. 1) Forest zone, 2) Residential zone and 3) Industrial zone. The water quality factors from the samples are validated against the desirable values as per IS 10500: 2012 and justifies the current status of the River and recommendations for its wellbeing.
Design and Analysis of Zigzag Classifier in Food Industry Applications
Authors: Reddy Yella Harshavardhan , Purushothaman K , Sreenivasan M , Sivakumar E R 
Published: October 2021

Abstract
In a zigzag classifier the material is being entertained utilizing varied channel velocities and mass load of the air. Specialty of zigzag classifier is it is being used in separation of particles having about the same size, but differing specific gravity, Separation of bulk materials which cause challenges and expensive costs if sieved. In this Zigzag classifier, sugar, salt, flour and grain, starch, milk products; spices; tea, gelatin, and vegetables are included in a typical application for the food sector. Zigzag classifiers are usually maintenance free, wear-resistant, overload-resistant and not sensitive to changes in the composition of the feed material. Due to these properties, the classification system can be operated without any oversight for lengthy durations. Even under overload situations, the goal output is clean particles or lightweight material.
A Survey on Automatic Text Summarization Techniques
Authors: Hima Bindu Sri S , Dutta Sushma Rani 
Published: October 2021

Abstract
In recent years, there is a tremendous explosion in the amount of text data on the internet and in the archives of news articles, scientific papers, legal documents and even in online product reviews. Text summarization is playing an important role in automatic content creation, minutes of meeting generation, helping disabled people and also for quick online document reading. To achieve these, several automation techniques have been proposed in various researches. In this regard, performing an exclusive survey on different methods, approaches of automatic text summarization which are published in different articles in most recent three years.
Influence of Nozzle Hole Geometry of CI Engines Performance and Emission Parameters Fuelled by Diesel and Biodiesel-A Review
Authors: Imthiyas A. , Saravanan M. , Sanjaykumar B M , Sujith Raj P , Udhaya Kumar M 
Published: October 2021

Abstract
In the quest to reduce hazardous pollutant emissions and environmental impact, various renewable alternative fuels derived from bio-based sources have entered the market. Biodiesel, a vegetable oil ester, has gained a lot of popularity and attention for diesel engine applications. The performance of diesel engine and emission characteristics are closely linked with fuel atomization and spray pattern of fuel injection nozzles. In modern engines various orifices with different designs are used. In a diesel engine, the shape of the diesel fuel injection nozzle and the fuel flow parameters in the nozzle have a considerable impact on the processes of fuel atomization, combustion, and exhaust emissions. The main focus of this study is to explore how number of nozzle hole and shape affects the performance of diesel engine, combustion, and emissions for both Biodiesel and diesel fuels.
Improving the Mechanical Properties of Natural Fiber Reinforced Sponge Gourd Fiber Composites
Authors: Selva Babu B , Bubesh Kumar D , Arjun K , Arshad A , Joy Athul M 
Published: October 2021

AbstractNatural fibers have emerged as a mainstay in the creation of Polymer Composites in recent years. Using a woven mat constructed from sponge fiber gourd (luffa), almond shell, and layered in an epoxy matrix, this work demonstrates the possibility of generating hybrid reinforced polymer composites using varied stacking sequences of composite layers. Natural fibers in an epoxy matrix were applied using hand-layup. The tests examined the possible influence of natural fiber reinforcement on the natural fiber hybrid composites.
Decolorization of Textile Wastewater with Activated Carbon made of Coconut Shell
Authors: Sangeetha S P , Bhowmick Susmita , Md Nawas Khan , Akash M 
Published: October 2021

Abstract
This study focus on the removal of textile dyeing effluent by analyzing the physio-chemical parameters such as color, turbidity, pH, Chemical Oxygen Demand (COD). Activated carbon is used for removing color from the wastewater collected from silkworm textile industry, Bishnupur, West Bengal. We have used activated carbon made with coconut shell which is ecofriendly and low in cost. The results of the analysis were compared with the water quality standards of BIS (Bureau of Indian Standard) for further application of the treated water in agricultural field. Also, this paper included the case study on textile dyeing industry in Bankura district, West Bengal, India and its impacts of pollution load in the environment.