bluuebunny/crossref_metadata_2025 huggingface dataset:
A Review of Colon Cancer Treatment using Photoactive Nanoparticles
Authors:   Professor, Department of Pharmaceutical Chemistry and Drug Quality Control, Faculty of Pharmacy, Al-Rachid Privet University, Damascus, Syria., Thallaj Prof. Dr. Nasser , Hamad Dania Hani ali ,   Student, Department of Pharmaceutical Chemistry and Drug Quality Control, Al-Rachid Privet University, Damascus, Syria., Batieh Naseem Ahmad ,   Student, Department of Pharmaceutical Chemistry and Drug Quality Control, Al-Rachid Privet University, Damascus, Syria., saker Gheed Ahmad ,   Student, Department of Pharmaceutical Chemistry and Drug Quality Control, Al-Rachid Privet University, Damascus, Syria.
Published: June 2023

This reviewed work on the development of photosensitive nanoparticles (NPs) based on a photodegradable poly(o-nitrobenzyl acrylate) core (PNBA, a hydrophobic and biocompatible polymer) and a dextran-derived shell (dextran is a biodegradable and water-soluble bacterial polysaccharide). First, methods for synthesizing PNBA-N3 were demonstrated by 1) single electron transfer radical polymerization (SET-LRP) of o-nitrobenzyl acrylates and then 2) introducing a single azide end functionalization. At the same time, the processes for the production of DexAlkyne-15 bearing several alkyne groups by the hydrophilicity of dextran were also addressed. Such as DexAlkyne-15 and PNBA-N3 can be reacted by CuAAC (Cu(I)-azide-alkyne cycloaddition catalyst) chemically resulting in Dex-g-PNBA glycopolymers with different molecular parameters. Second, strategies for producing NPs were demonstrated by comparing two processes that were characterized in terms of size, amount of dextran, coat thickness, and colloidal stability in NaCl or cell culture medium, or in the presence of a single potent surfactant. On the one hand, NPs made by nanodeposition of Dex-g-PNBA exhibit high PNBA weight fractions (>40%). On the other hand, the NPs were produced by evaporating the emulsion to the organic solvent using DexAlkyne-15 as a water-soluble surfactant and PNBA-N3 as a hydrophobic material. In this case, CuAAC occurred in situ (or not) at the fluid/liquid interface during the formulation of the NPs, resulting in “clicking” and “non-clicking”. Finally, a systematic study of the disorder of NPs by ultraviolet irradiation according to photolysis of PNBA chains is shown. To use NPs as smart drug delivery systems, studies have been shown of loading Doxorubicin (DOX - an anti-cancer agent) into NPs during placement. Methods for optimizing experimental conditions to enhance DOX encapsulation are discussed.
Relationship between Leadership and Management Training and Enhancement of Principal’s Skills at Public Sector Secondary School Level
Authors: Attaullah Muhammad , Khan Rahim
Published: June 2023

This research paper aimed to investigate the relationship between leadership and management training and the enhancement of skills of principals at the secondary level in Khyber Pakhtunkhwa. The study was motivated by the recognition of the crucial role that principals play in the success of secondary schools and the importance of their leadership and management skills. The research involved a comprehensive review of the role of principals at the secondary school level, the importance of training and professional development, and the specific challenges faced by principals in Khyber Pakhtunkhwa. In addition, the study involved the collection of data through a questionnaire from the trained secondary school principals in Khyber Pakhtunkhwa to gain insights into their experiences with leadership and management training and how it has enhanced their skills and abilities. Their input and impression provided support to find the gaps and improve further the training, its process and procedure. The results of the study provided valuable insights into the effectiveness of leadership and management training programs in enhancing the skills of principals at the secondary level in Khyber Pakhtunkhwa. The findings could also inform the development of policies and programs aimed at improving the quality of education in the region.
Female Self-objectification and Identity in Fiction “Before She Sleeps” by Bina Shah
Authors: Naseem Afshan , Naqvi Umme Laila , Safdar Saman
Published: June 2023

This novel is about women's objectification and identity through the concept of polyandry. This research highlights these types of problems related to women that are increasing in society day by day. This article aims to illustrate Polyandry and pain in women. They do not have the choice to live their life freely. They are like scapegoats in a patriarchal society. Polyandry is an ancient Greek word that means many men. It is first practiced in India. This article is wrapped with the viewpoints of some writers such as Tiwari, Goldstein, and Peter. This article presents a clear picture of Green City. Though it looks like a prosperous city yet it is proved a hell for women. In this regard, women chose an underground place to live named Panah. They deal with forty clients in order to win bread and butter. Men use different types of techniques to tempt women, such as whisky and champagne, to fulfill their purposes. Women in Panah provide them intimacy in the shame of lullaby, not sex. So, the study explains traumatic realities and also the relationship between agonies and physical distortion concerning the women characters, along with the concept of polyandry, which affects the life of women.
Role of Functional Literacy and its Impact on Women’s Empowerment
Authors: Farooqi Ruhma , Khan Muhammad Ismail , Ahmad Waqas , Ullah Zahid , Imran Sumera
Published: June 2023

This research paper aims to elucidate the synergistic outcomes resulting from the integration of functional literacy initiatives with the objective of promoting women's empowerment in the District of Mardan. The research adopts a quantitative approach, with the primary objective of investigating the influence of functional literacy on women's empowerment and exploring its direct effects. The population of the study consisted of all five hundred female individuals enrolled in the functional literacy program in District Mardan. Hundred females were conveniently chosen from two union councils as a sample. In order to examine the data, descriptive statistics i.e. average and variability measured by the standard deviation were utilized. The results were tabulated along with corresponding interpretations. The primary outcome of the study indicated that knowledge of functional literacy positively influenced the lives of participants. Moreover, the research findings emphasized the crucial contribution of organizations in promoting women's empowerment through the facilitation of functional literacy. In order to build upon these discoveries, it is advised that future investigations delve into the incorporation of novel and advancing technologies like artificial intelligence and virtual reality within functional literacy initiatives. This exploration holds the potential for amplifying the influence of such programs on women's empowerment.
An Enterprise of Cognitive Fog Computing For Disturbance Recognition in Internet of Things
Authors:   Department of Computer Science and Engineering, Koneru Lakshmaiah Education Foundation, Vaddeswaram, Guntur - 522302, Andhra Pradesh, India, Shukla Prashant Kumar
Published: June 2023

The Internet of Things (IoT) is a cutting-edge piece of cybernetic infrastructure that will eventually link all manner of previously disconnected physical objects to the web. The IoT is rapidly expanding into many facets of human life. IoT's attack surface has grown as a result of the technology's hyper-connectivity and inherent heterogeneity. In addition, IoT devices are used in both managed and unmanaged settings, leaving them open to innovative attacks. Fog computing is used in the proposed intrusion detection system for IoT applications to implement intrusion detection in a decentralised manner. Attack detection at fog nodes and summarization on a cloud server make up the proposed system's two parts. The local fog nodes in the IoT environment examine the traffic, and then they send a report to the cloud server that summarises the current global security state of the IoT application. According to the results of the experiments, the fog nodes are able to identify the attack 27% more quickly while also reducing the number of false alarms. The work that has been recommended provides a beginning point for the creation of a fog-based intrusion detection system that can be used for applications related to the IoT. The proposed system has a false alarm rate of only 0.32% and an accuracy of 98.15 percent. The proposed method can only identify attacks that conform to specific patterns.
First observation of Pleurodirus fairmairii damages on Cistus heterophylus subsp. carthaginensis, an Ibero-Balearic endangered endemism
Authors: MAS Hugo , VELÁZQUEZ-DE-CASTRO Antonio J.
Published: June 2023

Aim of study: To survey and report the behavior of the weevil Pleurodirus fairmairii as a pest species on Cistus heterophyllus subsp. carthaginensis (Pau) M.B. Crespo & Mateo (Cartagena’s rockrose), in order to provide the first biological data on this species. Cartagena’s rockrose is an Ibero-Balearic endemism considered as "endangered" in the Spanish Catalogue of Threatened Species. Its current distribution is limited to the Spanish provinces of Murcia, Valencia and the Balearic Islands.
Area of study: The study has been conducted in Valencia province (Spain).
Material and methods: Pleurodirus fairmairii was observed in the field feeding voraciously on Cartagena’s rockrose. Damages were described, and several individuals of the weevil were captured alive for preliminary observation of their feeding habits under laboratory conditions. The trials (no-choice test) consisted of offering a freshly plucked leaf from different potential host plants to the weevils introduced individually in a Petri dish. Furthermore, a male and a female were dissected for the study of genitalia, and their respective components were prepared for microscopy study and subsequently described.
Main results: This paper reports for the first time the occurrence of the weevil Pleurodirus fairmairii on plants of C. heterophyllus subsp. carthaginensis and describes the important damage it causes on leaves, stem, buds, flowers and fruits.
Research highlights: A short description of the adults is given, including the genitalia, that are shown and described for the first time.
On liberation of English from purist pundithood through nativization in Nepal
Authors: Dewan Shankar
Published: June 2023

This qualitative content analysis paper attempted to explore the linguistic, creative, and pragmatic nativization employed by creative Nepali authors of English in their writings. I purposively selected three anthologies of stories, four novels, eight essays, one newspaper article, and four news stories/reports. Then, I went through the contents, examined the language used in those texts, noted down the unique features of Nepali English, and thematized them under linguistic, creative, and pragmatic nativization to make the analysis more explicit. I found that the creative Nepali authors of English intentionally nativized English to convey a distinct sense of Nepaliness and to deconstruct the so-called sacred cow model of English. Findings reveal that policymakers and pedagogues need to shift from the monomodel approach to the functional polymodel approach that only values the features of Nepali English as innovations, rather than errors.
Sequentielle multimodale optometrische Behandlungsverfahren des pädiatrischen Nystagmus
Authors: Rutner Daniella
Published: June 2023

Purpose. The purpose of this article is to present multimodal sequencing as a clinical therapeutic approach for the treat- ment of pediatric patients with nystagmus based on a per- sonal assessment by the author. While several papers have recommended various therapeutic interventions, a sequenc- ing of these multiple therapeutic managements has never been explicit. Material and Methods. Extensive literature search (e.g., Pub- Med, Google Scholar), as well as over 20 years of clinical ex- perience have been used to develop a comprehensive clinical optometric protocol for sequencing of available therapeutic optometric management for pediatric nystagmus. Results. A comprehensive multi-modal therapeutic protocol for pediatric patients with nystagmus is presented. It includes: refraction, contact lenses, biofeedback, vision therapy, low vision, and referrals for ancillary treatment. Conclusion. For the first time, a detailed and comprehen- sive clinical protocol for the management of the pediatric patient with nystagmus has been presented. This should allow for improved patient care, especially with respect to the developmental aspects of nystagmus to provide optimal vision early in life. Keywords Nystagmus, management of nystagmus, biofeedback, contact lenses, prism, eye movements
Fatigue and stress responses in athletes performing functional-fitness workout and its association with well-being
Authors: Zecchin Arthur , Benedicto Poli-Neto Omero , Frezza Pisa Marcel , Aquino Rodrigo , Fuini Puggina Enrico
Published: June 2023

We monitored fatigue and stress using heart rate variability and session rating perceived exertion in trained athletes performing a single bout of functional-fitness training workout. Also, we verified the association between heart rate variability and session rating perceived exertion with well-being. In the first week of tapering, eleven national athletes (age: 25.7 ± 3.3y; body mass index: 27.7 ± 2.8 kg·m-2; training history: > 4y) participated in this study. Heart rate variability was analyzed basal, before and after the experimental protocol. Session rating perceived exertion was analyzed after the experimental protocol, and after the assessments, the association between them and well-being was performed. Repeated measures of ANOVA were performed to compare condition x time, and Pearson correlation was used to analyze the associations. Heart rate variability decreased its values after the training workout (ηp2=11.5, p<0.001), and session rating perceived exertion was high (25.8 ± 6.9 a.u.). We did not find associations between heart rate variability or session rating perceived exertion and well-being (r between -0.34 and 0.35, p>0.05). This study did not support the idea of a significant relationship between objective/subjective, physiological assessments and well-being in one bout of training workout. Functional-fitness coaches and athletes should know the limited evidence about objective/subjective assessments and well-being.
Predicting high-altitude vehicle launch opportunities usingmachine learning: a preliminary investigation
Authors:   Department of Computer Science, University of West Florida, Pensacola, FL, United States, Haake Jacob G , Bagui Sikha ,   Department of Computer Science, University of West Florida, Pensacola, FL, United States
Published: June 2023

High-altitude ballooning, along with other aerospace endeavors, requires extensive preplanning and preparation forvehicle launching. In ballooning specifically, weather conditions are especially effective and driving whether or nota launch can occur. As most flights must be shaped around the flight path, both for safety and recovery reasons,it is imperative that any acceptable flight path and day may be considered. The goal of this project is to minimize,using machine learning, the complexity and manpower requirements for determining if a launch can occur.
STUDY OF LASER CLADDING OF COMPOSITE COATINGS
Authors:   Silesian University of Technology, Lisiecki Aleksander
Published: June 2023

Laser cladding is often used for manufacturing of protective coatings due to limited heat input. The thermal conditions are decisive for the microstructure and thus the properties. In this study Ni-based powder with addition of WC particles was used laser cladding with the TruDisk 3302 laser. Tests were conducted at different energy input (heat transfer efficiency not considered). Powder was fed directly into the melt pool by a single coaxial nozzle set in front of the melt pool. The influence of basic laser cladding parameters on the geometry, microstructure and hardness was determined. The heat input of laser cladding has significant effect on chemical and phase composition, as well as microstructure. The obtained coatings have typical composite structure with NiCr metallic matrix and WC carbides. The lower energy input of laser cladding is beneficial providing limited penetration depth, dilution, and preferable distribution and high share of tungsten carbides. However, too low energy input at the chosen technological conditions will lead to the lack of fusion. The share of carbides on cross section of the coatings produced at minimum heat input is over 50%, while for the maximum heat input the share is below 20%.
EVALUATION OF VISCOUS-ELASTIC PROPERTIES OF RESONANCE MAPLE WOOD
Authors:   Translvania University of Brasov, Mihalcica Mircea , Stanciu Mariana Domnica ,   Translvania University of Brasov, Teodorescu Horatiu Ddraghicescu ,   Translvania University of Brasov, Iftimie Nicoleta ,   National Institute of Research and Development for Technical Physics
Published: June 2023

The paper presents the experimental investigations regarding the viscoelastic behaviour of maple wood used in the construction of stringed musical instruments. The studied samples were classified according to the anatomical structure of the wood in the four classes of anatomical quality used by the manufacturers of musical instruments. Based on the mechanical analysis in dynamic regime, the viscoelastic parameters were determined - the preservation module E', the loss modulus E' and the damping tan δ, in conditions of constant temperature, respectively variable temperature. It was found that the determined rheological quantities depend on the anatomical structure of the wood, the frequency of the excitation and the temperature.
STUDY ON OPTIMIZING MATERIALS FOR 3D GRIPPER PRINTING
Authors:   Gheorghe Asachi Technical University of Iasi, Paduraru Emilian , Dumitras Catalin Gabriel ,   Gheorghe Asachi Technical University of Iasi, Chitariu Dragos Florin ,   Gheorghe Asachi Technical University of Iasi, Chifan Florin ,   Gheorghe Asachi Technical University of Iasi
Published: June 2023

The purpose of this paper is to identify the material that offers optimal characteristics in terms of cost, strength and weight. This is necessary because more and more composite materials and 3D printing are being used in the construction of robots, including the gripper. In this context, two types of materials are considered possible to be used in the construction of grippers. Samples are made in different 3D printing modes; the Taguchi method is applied to identify the optimal values. A finite element analysis was also performed in order to verify the characteristics of the materials introduced in the program by comparison with the experimental results in order to use them in the analysis of a new gripper solution. As they will follow, PLA material with 100% infill, 0,17mm layers thickness and 45° raster angle has the greatest resistance at extension. This material definition will be used in future research to the entire model of the gripper to see the behavior in different conditions given by the current requirements.
THE INFLUENCE OF THE THERMAL REGIME ON THE GUIDEWAYS OF THE MAIN ACTUATION OF A GANTRY TYPE CNC MACHINE
Authors:   Vasile Alecsandri University of Bacau, Petrea Lucian , Stan Gheorghe ,   Vasile Alecsandri University of Bacau, Drob Catalin ,   Vasile Alecsandri University of Bacau
Published: June 2023

CNC Gantry Type Machine Tools with great distance between slides (gantry milling machines, plasma and laser gantry cutting machines, vertical lathe machines, etc) are used extensively in the manufacturing of large and long components. Because this type of Machine Tool it is used to machine large parts at high speeds, significant heat will be produce at the cutting tool level and transmitted thru the tool holder to the ram or spindled and then to the ream case guideways. Heat it’s also generated when using a ball screw actuation for the main axis because of the friction forces at the ball screw level. Due to material expansion, the heat generated during the machining process can influence the precision of the Machine Tool. In this paper, finite element analysis (FEA) was used to analyze the influence of the temperature on the rigidity of the Machine Tool guideways. The results of the studies performed will provide the machine tool builder with important information regarding the points that need to be address in order to help in improving thermal compensation.
USE OF REVERSE ENGINEERING TECHNIQUES FOR INSPECTING SCREWS SURFACES OF A HELICAL HYDRAULIC PUMP
Authors:   Dunarea de Jos University of Galati, Romania, Baroiu Nicușor , Moroșanu Georgiana-Alexandra ,   Dunarea de Jos University of Galati, Romania, Teodor Virgil Gabriel ,   Dunarea de Jos University of Galati, Romania, Crăciun Răzvan Sebastian ,   Dunarea de Jos University of Galati, Romania, Păunoiu Viorel ,   Dunarea de Jos University of Galati, Romania
Published: June 2023

Recently, 3D measurement systems have developed more and more in various fields. With the help of 3D measuring systems, the measurement time in design, manufacture, assembly and production is substantially reduced. In this paper, it is proposed to redesign two pieces of a helical pump (driver and driven screws) based on numerical models obtained by scanning. These models are obtained based on the processing of point clouds resulting from the 3D scanning of the respective pieces. After completing the actual scanning process, the numerical models were measured using specific software to determine the dimensional characteristics and their modeling was performed in a computer-aided design program. Subsequently, the inspection was performed by overlapping the scanned model and the CAD model of each piece, in order to be able to compare the analytical models with the real pieces. This comparison allows to appreciate the degree to which the analytical model obtained by redesign corresponds to the real piece. In this way, the ability of future pieces obtained based on the analytical model to be able to accomplish the desired functional role can be appreciated.
HYBRID ALUMINUM MATRIX COMPOSITES REINFORCED WITH IN SITU MG2SI AND AL3NI PHASES
Authors:   Hakim Sabzevari University, Ramezanalizadeh Hossein
Published: June 2023

Aluminum matrix cast composites (AMCCs) are engaged materials for the fabrication of accountable and especially acute pieces utilized in the high-tech scope of industry such as automotive, aerospace, electronics, etc. In the present study, hybrid aluminum base composite reinforced with in-situ produced Mg2Si and Al3Ni particles were fabricated successfully in casting moods, and the structural features of inborn reinforcing compounds was evaluated in different thermal situations of solidification. For this issue, the composite microstructure was characterized by X-ray diffraction (XRD) and optical microscope (OM). In addition, the mechanical properties were evaluated by hardness test. According to the results, increasing in the cooling rate during solidification leads to the reduction of mediate size of the Mg2Si initially crystals, enhancement of their dispensation uniformity and clear increasing of their final amount; meanwhile, the average size of Al3Ni particles decreases significantly but their content is almost the same for different conditions.
"THE SURFACE ENERGY OF COATING LAYERS USED FOR VIOLINS VARNISHING "
Authors:   Transilvania University of Brasov, Stanciu Mariana Domnica , Gheres Eduard ,   Transilvania University of Brasov, Lungu Antoanela ,   Transilvania University of Brasov, Tismanar Ioana ,   Institute of Research and Development, Transilvania University of Brasov, Gliga Vasile Ghiorghe ,   Transilvania University of Brasov, S.C. Gliga Instrumente Muzicale S.A
Published: June 2023

Numerous studies on new and historical violins have highlighted the importance of coatings for the acoustics of the musical instrument. The purpose of this paper is to present the results regarding the surface energy of resonant wood, spruce and maple in two states: lacquered and unvarnished. The method is based on static contact angle measurements of sessile drops. The obtained results highlight large differences in surface energy depending on the wood section (radial versus longitudinal), surface (lacquered versus unvarnished), wood species. Thus, although the surfaces are polar for both unpainted and lacquered samples, it can be seen that there is a tendency to increase the contact angle after applying the surface treatment (applying the varnish). In the case of spruce wood cut in the longitudinal direction, the contact angle increases by about 31% in the case of the lacquered surface. For maple wood, the increase is 10%. For radially cut spruce wood samples, it is observed that the contact angle is higher than 90°, the surface having a hydrophobic character, a characteristic that is not found in maple wood. The application of the varnish on the radial surface diminishes the hydrophobic characteristics of the spruce wood. In maple wood, the difference between the longitudinal and radial samples is very small (2%).
PRELIMINARY INVESTIGATION ON THE EFFECT OF CUTTING PARAMETERS ON SURFACE ROUGHNESS AND FLATNESS IN DRY MILLING OF PMMA
Authors:   Dunarea de Jos University of Galati, Susac Florin , Frumusanu Gabriel Radu ,   Dunarea de Jos University of Galati
Published: June 2023

Polymethylmethacrylate (PMMA) also known as Plexiglass is a commonly used material for many applications, especially in medical industry. In some application, PMMA parts may be also used as molds for enabling fabrication of final products. Some of these parts are manufactured by injection molding, but in many cases mechanical machining of some surfaces is still required. The cutting of PMMA requires a previous optimization of the cutting parameters combination (feed rate and spindle speed). If this optimization is not carried out, the problems encountered may refer to cutting debris or material melting during machining and, consequently, the material attaches to the tool cutting edge. This will result in a surface with very poor quality, in terms of aspect and surface roughness. This paper reports on the preliminary experimental investigation of cutting parameters on the surface roughness and flatness error in dry milling of PMMA. The cutting experiments were conducted on EMCO MILL 55 CNC drilling and milling machine. The design of experiment (DOE) consists in L27 (33) design, meaning a three factorial experimental plan (3 factors on 3 levels). The cutting parameters, respectively depth of cut, feed rate and spindle speed are taken as inputs and surface roughness and flatness are taken as outputs. The surface flatness was measured with TESA Micro-Hite coordinate measuring machine. Analysis of variance (ANOVA) was adopted to identify the statistical influence of each input parameter and combination of input parameters on surface roughness. From the preliminary results, it can be observed that optimum regime is a combination of low feed rate, low depth of cut and high spindle speed. Moreover, an artificial neural model is proposed for prediction of surface roughness and flatness considering the depth of cut, feed rate and spindle speed as input variables. This approach aims to reveal the possibility of predicting the output parameters using neural network modelling, that can be further used to optimize the cutting regime.
OPTIMIZATION TEMPERATURE AND FRICTION STENT PRODUCTION PROCESS BY EXTRUSION METHOD
Authors:   Atatürk University, Sezek Sinan , Kizilelma Muhammed Ruhi ,   Atatürk University, Aksakal Bünyamin ,   Yıldız Technical University
Published: June 2023

"The stent is manufactured by traditional machining methods. This study has been carried out to improve the mechanical properties of stents produced by removing swarf. Production methods have been examined and extruded to produce a seamless cylindrical section pipe. The Mg-Zn-XX alloy used in stent production was used in this study. Extrusion mold design is made to produce stent with Mg-Zn-XX alloy. These parameters are optimized because temperature and friction values from the Extrusion parameters affect the shaping parameters of the generated stent. During optimization, the Simufact finite elements program was used. The optimization has shown that the Mg-Zn-XX alloy has the best styling results of friction of 300 o C de Coulumb 0.4. "
MONITORING AND ANALYZING THE CLASSICAL COUNTER CURRENT INDUSTRIAL TUNNEL DRYER FOR MASONRY CLAY UNITS
Authors:   Institute for testing of materials,  Belgrade, Serbia, Vasić Milos
Published: June 2023

This paper goal was to increase the quality of the drying ware and to lower the drying scarp rate in one local brick factory. The registration of drying air parameters (temperature, humidity and velocity) along the dryer channels as well as the drying ware linear shrinkage and mass change were monitored for a month. Material and Energy balances were also recorded. Results have revealed that the drying air humidity and temperature profiles were not evenly distributed along the height of the drying tunnels. The ambient air breakthrough into the dryer was experimentally identified and quantified. It was the cause of the product quality deterioration and the reason why the critical and residual moisture in some of the products was larger than the desired one. Based on monitored data and mass and energy balances a solution was proposed for preventing the “false” air breakthrough, upgrade of the existing dryer fans and installation of the novel, measuring equipment. A hypothetical solution for increasing the capacity of the dryer, which uses the registered material and energy balances as well as factory management expectation, that the production of 50.000 masonry units per day will be achieved soon, was given also.
HOT DUCTILITY BEHAVIOR OF Fe-0.05C-24Mn-3.5Si-1.6Al STEEL WITH Nb AND Ti MICROADDITIONS
Authors:   Silesian University of Technology, Fojt-Dymara Gabriela , Opiela Marek ,   Silesian University of Technology
Published: June 2023

"Hot ductility tests were carried out on Fe-0.05C24Mn-3.5Si-1.6Al high-manganese austenitic steel with Nb and Ti microadditions at a concentration of 0.029% and 0.075%, respectively. Hot tensile tests were performed using Gleeble 3800 thermomechanical simulator on specimens with a diameter of 6 mm and 116.5 mm in length. Deformation was carried out in a temperature range from 1050 °C to 1200 °C with a strain rate of 2.5 · 10-3 s -1 and 5.0 · 10-3 s -1 . Hot ductility was determined on the basis on evaluation of reduction in area (RA). Higher values of stress on the work-hardening curves were observed during tension carried out at higher strain rate. An analysis of the form and course of curves obtained in the tensile test allows to state that, in the studied range of hot plastic deformation parameters, the decrease of strain hardening is caused by the process of dynamic recrystallization (DRX). The reduction in area in a temperature range from 1050 °C to 1200 °C decreases from 90% to approx. 58% for the strain rate of 2.5 · 10-3 s -1 and from 82% to 48% – for the strain rate of 5.0 · 10-3 s -1 ."
ON THE EVALUATION OF TWO DESIGN VERSIONS OF A 23000T OFF-SHORE BARGE BY THE HYDROELASTIC LONG-TERM APPROACH
Authors:   Dunarea de Jos University of Galati, Domnisoru Leonard
Published: June 2023

In this paper the hydroelastic study is developed for a 23000T off-shore barge, with a maximum length of 189 m, focusing on a comparative study for two design versions with 40 m and 50 m breadth. The initial off-shore barge with 40 m breadth has been extended to 50 m breadth by adding a supplementary tank section at the centerline, so making it possible to ensure transport capabilities for cargo structures extra wide. The two versions of the off-shore barges are analyzed at full cargo capacity of 23000 t case, for speed values 0 and 7 knots, corresponding to operation on-site at zero speed and maximum transition speed conditions, under head irregular waves with interference components, for a short-term averaged waves’ spectrum. The hull structure of the off-shore barge versions is almost uniform over the whole length, mainly being recorded stress hot-spot at the hull transversal bulkheads connection with the other orthogonal panels and forepeak of the barge, with a maximum of 1.2 hot-spot factor at the prismatic barge hull part. This study is developed by own software DYN-HYD, involving the modules for the hydroelastic long-term approach, applied for the evaluation of the safety limit in the long-term operation conditions.
SPIRAL TURBINE CASING - IMPELLER ASSEMBLY DESIGN AND FLUID FLOW ANALYSIS
Authors:   Maritime University of Constanta, Dumitrache Constantin Luois , Deleanu Dumitru ,   Maritime University of Constanta
Published: June 2023

Turbine is a hydraulic engine where energy transfer occurs both based on the kinetic energy and potential (pressure) of the water. In this article we have designed the Spiral Turbine Casing – Impeller assembly with dimensions, geometry from technical documentation forms and the articles of other authors. CAD design of this assembly is a challenge and was done using .NX SIEMENS. The study of the fluid flow was done with ANSYS CFX by importing this assembly, some conclusions were drawn regarding the fluid velocities and the pressure field. The cavitation phenomenon that may occur in the operation of the turbine was also taken into account and some conclusions were drawn regarding the effects of this phenomenon. If the presence of vapours in the hydraulic circuit is found, then the cavitation can develop and this fact can be highlighted with Vapour Volume Fraction.
EXPERIMENTAL INVESTIGATION ON THE EFFECT OF CUTTING PARAMETERS ON CUTTING TEMPERATURE DURING TURNING OF X200Cr12 WITH COATED AND UNCOATED INSERTS
Authors:   Laboratory of Applied Mechanics and Energy Systems, Faculty of Applied Sciences, Kasdi Merbah University, Abdeldjaouad Amira , Rezgui Imane ,   Laboratory of Applied Mechanics and Energy Systems, Faculty of Applied Sciences, Kasdi Merbah University, Belloufi Abderrahim ,   Kasdi Merbah University, Abdelkrim Mourad ,   Kasdi Merbah University
Published: June 2023

One of the most important phenomena associated with machining operations is the cutting temperature because it affects the life of the cutting tool. Cutting parameters and insert material are the important conditions that affect temperature in turning. In this study, tests were carried out on X 200 Cr 12 steel during turning process. In ordre to measure the cutting temperature of the tool, the thermocouple method was used. The results illustrate that cutting temperature increases with depth of cut, feed rate, and the rotational speed. Due to the high conductivity of the insert coating, the tool cutting temperature reaches much higher levels than in the case of uncoated inserts. The conductivity of the insert affects the cutting temperature. The most influential parameters on the cutting temperature are feed rate and depth of cut.
NUMERICAL ANALYSIS OF STRESS AND STRAIN STATE IN MEMBRANE WALLS WELD JOINTS PERFORMED BY SUBMERGED ARC WELDING
Authors:   Silesian University of Technology, Kik Tomasz , Górka Jacek ,   Silesian University of Technology, Przybyła Mateusz ,   Silesian University of Technology
Published: June 2023

The article presents investigation on stress and strain state in weld joints of boiler membrane wall by performing numerical analysis (finite element method). The main purpose was to create 3D model which will correspond to real membrane wall geometry under consideration, which will allow to perform strength simulation of numerical models considering variable parameters depending on the temperature. The model was fragment of boiler membrane wall made of X10CrMoVNb9-1 pipe and 10CrMo9-10 flat bar welded with submerged arc method. The research included the assumption of boundary conditions such as temperature cycles, welding method, type of mounting and base materials or heat treatment cycle. Three simulations have been performed depended on base material and temperature cycle adopted. As a result of the simulations, the distribution of temperature, displacement and stress in analyzed cases were obtained. The numerical simulation in dissimilar welded joints X10CrMoVNb9-1 pipe and 10CrMo9-10 flat bar heat treated afterwards, showed that the differences in linear expansion coefficients favour the development of cracks in the welds caused by increased level of stress. In parallel materials used for boiler membrane walls are the reason for difficulties in determine the proper technology of welding, preheating temperature and post-weld heat treatment parameters. Simulations indicated that the state of stress in weld joint is dependent on type of parameters adopted, and in closest scenario to real conditions, simulation showed that post-weld heat treatment had no positive effect on the stress state caused by discrepancy in linear expansion coefficients of both base materials.
Research on the Centralized Control System of Digital Platform Operators
Authors: Liu Meng
Published: June 2023

With the continuous development of the digital economy, the concentration behavior of platform operators presents characteristics such as large quantity, large scale, and wide impact, which puts forward higher requirements for the centralized control system of platform operators. The Anti Monopoly Law of China stipulates a system for reviewing the concentration of operators, but there is little research on the concentration control system of digital platform operators, especially a lack of systematic analysis of the concentration control system of digital platform operators. Therefore, in the design of the centralized control system for digital platform operators, full consideration should be given to the particularity of the digital economy, and regulations should be made based on the types of digital platforms and the different characteristics of different types of platform operators. After clarifying the basic principles for defining the relevant market, specific market dominance standards can be selected to identify digital platform operators who have or may have dominance. In addition, based on the characteristics of the digital economy, this paper analyzes the potential risks of competition damage caused by the concentration of digital platform operators. The principles of fairness and reasonableness, as well as the protection of consumer interests, will be established as the analysis basis. By improving the application standards and review methods, China's digital platform operator concentration control system will be improved.
Measures to Reduce Foreign Language Beginners’ Communication Anxiety
Authors: Li Qin
Published: June 2023

Nowadays, communication anxiety has become a big barrier to hinder peoples’ foreign language learning and oral expression. This paper is intended to help foreign language beginners relieve communication anxiety by exploring the cause of foreign language beginners’ communication anxiety. The main body of this paper includes two parts. For one thing, it analyzes part of reasons for beginners’ communication anxiety from psychology and language aspects. For another, it provides a few suggestions from beginners and teachers.
Feasibility Study on the Balance of Occupation and Compensation of Degraded Forest Land Project
Authors: Li Kun
Published: June 2023

Fufeng County is a traditional farming area, with superior land consolidation potential and agricultural development conditions. Through the comprehensive renovation of fields, water, roads, forests, and villages, the existing cultivated land area can be increased, the quality of cultivated land can be improved, and the trinity of "quantity, quality, and ecology" can be achieved. Reasonably allocate land resources, promote agricultural structural adjustment, improve production and living conditions in the project area, and increase local farmers' income. After the implementation of this project, it has played a positive role in promoting the development of local agricultural economy, achieving the expected goals of the project, and has great significance for the rational development and utilization of land resources. It is a very necessary and feasible land remediation project.
Influence of Infiltration Facilities on Groundwater and Research Status of Groundwater Visualization
Authors: Guo Chao , Xiao Xie
Published: June 2023

The rise of "sponge city" construction in China has promoted the development of recharge facilities such as rainwater gardens and rainwater seepage wells, but there is a lack of research on the impact of practical projects on groundwater. Rainwater infiltration has the risk of polluting groundwater, so recharging groundwater in these ways may increase the risk of secondary pollution of groundwater. Visualization technology can reveal the occurrence conditions, dynamic characteristics and movement changes of groundwater, and reveal the hydrogeological conditions in the study area.
An Automatic Digital Camouflage Pattern Generation Method based on Texture Structure
Authors: Ding Lei , Xu Chengjun , Cheng Fangzi , Guo Mingkun
Published: June 2023

This article investigates the problem of scattered burst signal detection based on multiple sensors to obtain overall decisions. In the explosion detection system studied in the article, sensors independently transmit their decisions on measuring explosion information to the data fusion processing terminal, which provides overall decisions based on fusion rules. The researchers focus on the data fusion theory of the distributed parallel detection burst point data fusion system based on the Bayesian rule. This paper has obtained the data fusion rule and sensor decision criteria that make the overall system optimal, and proposed a nonlinear Gauss Seidel mathematical variable algorithm that optimizes the data fusion rule and multi-sensor decision criteria The data fusion problem when detecting burst point signals with two different and three identical types of sensors. The data fusion algorithm proposed in this article is validated and simulated through computer experiments on the detection of three types of sensors. The relevant experimental data show that the performance of a data fusion system based on Bayesian detection is significantly improved compared with the sensor acquisition of burst point information. In the experiment, the risk of Bayesian missing detection of burst point signal coefficient of the data fusion system using three sensors with the same performance is reduced by 32.7%.
Advancements in Food Processing Technologies: Enhancing Safety, Quality, and Sustainability
Authors: Pokharel Binod
Published: June 2023

Food processing technologies play a vital role in ensuring the safety, quality, and sustainability of the global food supply. This research investigates recent advancements in these technologies and their impact on food safety, product quality, and sustainability. Preservation techniques such as high-pressure processing, pulsed electric field processing, and hurdle technology are shown to enhance microbial safety while preserving nutrition and sensory attributes. Advanced thermal methods like microwave processing, ohmic heating, and radio frequency heating reduce processing time, energy consumption, and maintain product quality. Non-thermal technologies such as ultraviolet light, cold plasma, and ultrasound extend shelf life without compromising nutrition and sensory properties. Innovative packaging systems contribute to freshness, prolonged shelf life, and reduced food waste. The research emphasizes sustainable practices such as energy-efficient equipment, optimized water usage, waste reduction, and eco-friendly packaging materials. Adoption of advancements in food processing technologies can improve consumer confidence, reduce waste, and create a sustainable food supply chain. This research serves as a valuable resource for industry professionals, researchers, and policymakers seeking to implement innovative food processing technologies. Key Words: cutting-edge technologies, hurdle technology, ohmic heating, cold plasma technology
Probiotics: Production, Characterization, Types, and Health Benefits
Authors: Keerthi Reddi Sai Satya
Published: June 2023

Probiotics, live microorganisms that confer health benefits to the host when administered in adequate amounts, have gained considerable attention for their potential in enhancing human health and well-being. This research paper presents a comprehensive overview of probiotics, including their production, characterization, types, and health benefits. The introduction emphasizes the significance of probiotics in maintaining a healthy human microbiota and provides a rationale for investigating their potential advantages. The production section details the processes involved in strain selection, isolation, and fermentation techniques for large-scale probiotic production. Furthermore, formulation considerations are discussed to ensure probiotic viability, stability, and functionality. The characterization section presents various methods for assessing probiotic viability, safety, and stability. The section on types of probiotics focuses on well-studied strains such as Lactobacillus and Bifidobacterium species, as well as emerging strains like Saccharomyces boulardii and Propionibacterium freudenreichii. Lastly, the health benefits section discusses the positive effects of probiotics on gut health, gastrointestinal disorders, immune system modulation, and other conditions. Further research is necessary to fully comprehend the mechanisms and potential of probiotics in promoting human health and well-being. Key Words: microbiota, metagenomics, high-throughput sequencing, cryoprotectants and encapsulation
KIC7542091 Örten Çift Sisteminde Çevrimsel Manyetik Aktivite
Authors: TERZİOĞLU Zahide , GÜRSOYTRAK MUTLAY Hande , ÖZDEMİR Sacit , GÜROL Birol
Published: June 2023

Bu çalışmada, KIC7542091 sisteminin Kepler Uzay Teleskobu ile alınmış yüksek duyarlıklı fotometrik verileri kullanılarak çevrimsel aktivitenin yapısı ortaya konulmuştur.

Sistemin toplam 18 ayrı çeyrekte (quarter) alınmış ışık eğrileri dikkate alınarak maksimum ve minimum parlaklıkları ile bu parlaklıklar arasındaki farklar incelenmiş ve yaklaşık 150 gün dönemli çevrimsel değişimin bulunduğu gösterilmiştir. Bu değişimin, sistemin tayf türüyle (G1V; Frasca vd., 2016) uyumlu bir şekilde aktivite kaynaklı olacağı önerilmektedir. W UMa türü bir değişen olan bu sistemin fiziksel ve geometrik parametrelerine ilişkin çalışmalar hem Kepler Uzay Teleskobu, hem de TESS gözlemlerine dayalı olarak sürdürülmektedir.