Real Size Research Articles

Dual electromagnetic energy harvesting technology for sustainable transportation systems

Safety and energy resources are two important necessities of a sustainable transportation. Energy harvesting from roadways has a potential to impact both requirements. In this study, the Hybrid electromagnetic energy harvesting prototype is introduced. The prototype consists of two mechanisms, linear generator and rack-pinion to generate the electrical power. The experimental tests and analytical models were conducted to examine the performance of the prototype. The prototype was designed to perform as a speed bump. In the experimental tests, the traffic conditions were simulated to provide better insight of the prototype’s performance in real condition. The root mean square of the power outputs was measured, which was 1.2 W and 80 mW for the rack-pinion and linear generatormechanisms, respectively. According to the small scale of the prototype in comparison with real size, the results showed a promising technology to generate substantial electrical power in the field. The equivalent stiffness of the prototype is measured by experimental test which is 140,657 N/m. The analytical and experimental results show an agreement in influential factors for generating power; magnetic flux and relative movement for linear generator mechanism and vertical velocity and gearbox ratio effects for the Rack-pinion mechanism. In addition, the feasibility study showed that the prototype was applicable technology in roadways. The ease of installation, limited effects of the prototype on roadway performance and maintenance procedure make it an inevitable candidate for energy harvesting in roadways. However, it must be noted that the technology is still in its beginning stage and it must be developed in different aspects including generating power ability, endurance and cost-efficiency.

Multi-Class Grain Size Model for Forged Alloy 718 Aircraft Parts

The evolution of microstructural features such as local grain size and local grain size distribution are essential in view of the final physical and mechanical properties of the nickel base alloy 718 for aircraft parts forged in a multi-step production route. Due to increasing standards and the need of the prediction of fracture mechanical properties, a multi-class grain size model for a more detailed microstructure prediction is necessary. Therefore, a multi-class model considers the real initial non-uniform grain size distribution and structure of the pre-material at the beginning of the forging process, which affects the evolution of grain sizes during thermo-mechanical treatment and leads to different results than commonly used uniform grain structures. The initial distribution is defined by grain classes according the ASTM standard. It is shown that the presence of different classes and distributions of grains are as import as the applied strain, strain rate and temperature on dynamic, meta-dynamic and static recrystallization. Additionally, dissolution processes of delta phase and grain growth kinetics are included in the model to properly indicate the recrystallized fractions and represent the resulting multi-class microstructure. A series of simulations with different initial distributions is discussed and compared with examined forged samples in terms of the resulting microstructure for typical forging parameters. Based on these results the microstructure model can be used in combination with collected process data to predict the resulting properties and for the design of new aircraft parts.

Limitations of Nanoparticles Size Characterization by Asymmetric Flow Field\u2011Fractionation Coupled with Online Dynamic Light Scattering

The development of reliable protocols suitable for the characterisation of the physical properties of nanoparticles in suspension is becoming crucial to assess the potential biological as well as toxicological impact of nanoparticles. Amongst sizing techniques, asymmetric flow field flow fractionation (AF4) coupled to online size detectors represents one of the most robust and flexible options to quantify the particle size distribution in suspension. However, size measurement uncertainties have been reported for on-line dynamic light scattering (DLS) detectors when coupled to AF4 systems. In this work we investigated the influence of the initial concentration of nanoparticles in suspension on the sizing capability of the asymmetric flow field-flow fractionation technique coupled with an on-line dynamic light scattering detector and a UV–Visible spectrophotometer (UV) detector. Experiments were performed with suspensions of gold nanoparticles with a nominal diameter of 40 nm and 60 nm at a range of particle concentrations. The results obtained demonstrate that at low concentration of nanoparticles, the AF4-DLS combined technique fails to evaluate the real size of nanoparticles in suspension, detecting an apparent and progressive size increase as a function of the elution time and of the concentration of nanoparticles in suspension.

Mesoscale study on the shock response and initiation behavior of Al-PTFE granular composites

A combination of mesoscale simulations and explosive loading experiments is used to investigate the shock response and shock-induced initiation behavior of aluminum-polytetrafluoroethylene (Al-PTFE) granular composites. A two-dimensional model following the random distribution of real Al particle sizes is developed and validated against experiments. The model is employed to investigate the effect of Al mass fractions on shock characterizes as well as Hugoniot relationships, and noticeable differences are visualized at the grain-level in the pressure, temperature, and strain response. Systematic shock structures in metals have been identified, and the underlying mechanisms of deformation and energy dissipation are discussed respectively. Results demonstrate that the high pressure is concentrated in the wave front, but a much greater heat and larger strain exhibit along grain/matrix interfaces that enable the friction dissipation the main mechanism of hot-spots formation. Specific quantities of critical temperature to initiate are obtained based on basic microstructure attributes to analyze the influence on hot-spots distribution by mass fractions. The interaction of shock wave with mesoscale heterogeneities accounts for the stochastic nature of the initiation process.

Експериментальні дослідження робочого процесу пневмотранспортера обчісаного вороху

The article presents the advantages of harvesting grain ears by the method of combing at the root use stripper harvesting module technology with subsequent processing in comparison with combining. Harvesting with this technology is performed by a trailed harvesting machine with stripper working bodies. The implementation of this technology is constrained by namely the lack of scientific substantiation of the operating modes of the pneumatic conveyor of the combed heap. In this regard, there is a problem of researching the pneumatic conveyor, for its solution a method of experimental research was developed, which will determine the optimal parameters and performance of the pneumatic conveyor combed heap.The results of experimental researches of technological process of the pneumotransporter for transportation of the combed heap of grain in the trailer - the cart, namely range of flight of the combed heap depending on frequency of rotation dampers. The parameters of the factors and the geometric dimensions of the experimental setup were determined by computer simulation in SolidWorks. During the simulation, a full-fledged computer model was developed in real size, where the parameters were obtained by changing the speed of the impeller and changing the geometry of the loading window and the pneumatic line. Using the results of theoretical research, modeling and analysis of literature sources, the limits of the values of the factors were determined, which are given in the table. To conduct experimental research, an experimental setup was made, which allowed to vary the values of variable factors, and thus obtain a variety of data on the range of the combed pile of wheat depending on the values of variable factors. It is established that it is most expedient to use a noncomposite three - level Box - Benkin plan for three factors, which makes it possible to obtain a mathematical model according to the conducted experiments. The mathematical model is obtained, which in the future will make it possible to establish rational parameters and modes of operation of the compressed heap pneumatic conveyor. Checking the significance of the coefficients. The significance of the regression coefficients indicated that all the coefficients are significant. Checking the adequacy of the model showed that the model is adequate.

Energy harvesting capability of single-chamber oscillating water column wave energy device model on controlled wave height and period

The urgency of electricity demand and environmentally friendly power generator made ocean wave energy as one of many renewable energies that could be implemented in Indonesia because many of its coastlines have the power enough to generate electricity locally and regionally. This research is mainly discussing the model’s capability to generate electricity based on various wave height and period. This energy harvester model made in the laboratory with 1:16 scale, so the other variable component also following this scale. The turbine used in this experiment using Wells turbine with seven blades following the profile guidelines of NACA 0024. The result of this research shows that the power generated by the turbine correlates to wave height and wave period. The output generated by this energy harvester model could achieve 21.2 kilowatts in one hour on average or 339.4 kilowatts in one hour if upscaled to its real size.

Physical and mathematical modelling of rib pillar deformation and failure processes

Underground mining of water-soluble ores is associated with the necessity of mine protection from flooding. Reduction of risks of emergency situations at Perm Krai potash mining enterprises by means of real-time response to underground changes and by organizing appropriate preventive measures contributes to safe subsoil usage and the development of the region.The article presents the main results of research on experimental and theoretical justification for using relative transversal deformation of rib pillars as an informative parameter that allows a rapid assessment of underground mine load-carrying elements for Verkhnekamskoye potash deposit conditions. Experimental studies consisted of physical modelling of pillars deformation and failure processes on the basis of laboratory tests on uniaxial loading of salt rock cubic specimens of large sizes with simultaneous recording of their strain state. Theoretical studies included mathematical description of laboratory tests results and determination of medium model parameters that could reliably describe all stages of salt sample deformation. In order to estimate rib pillars relative transversal deformation values at which yield occurs the adaptation of developed model of medium to stoping room supporting elements taking into account their real size and geometrical form was carried out.

USE OF AUGMENTED REALITY TECHNOLOGIES IN SOFTWARE FOR INTERACTIVE VISUALIZATION OF THREE-DIMENSIONAL OBJECTS ON INDUSTRIAL SUBJECTS

The digital economy is an important vector of the National Economic Strategy of Ukraine. The digital economy opens new opportunities and incentives for various areas of domestic business, including the development of industrial enterprises. Among the modern available digital technologies, the article considers one of the most promising technologies – augmented reality. Interest in augmented reality is shown by industrial enterprises that invest in its development, which contributes to its spread and improvement. This paper investigates the methods of application of AR in industry. The software application with the technology of interactive visualization of three-dimensional objects is implemented in the work. objects by means of augmented reality in real time and on a real scale with the function of storing and transmitting scenes with objects in space to mass mobile devices for implementation in industrial enterprises. Thanks to the existing scientific achievements in this field, analysis and synthesis of publicly available scientific works, the authors formed the main provisions of augmented reality and considered the main elements of this process in the chosen field. The experimental part of the work was performed using a set of development tools for ArCore tracking. A feature of the proposed system is the ability to create and manage a group of objects, presenting objects in real size and in real time for mass mobile devices. It was possible to change the parameters of augmented reality objects when visualized by entering a block of generalized parameters, which speeds up the interaction and includes the ability to change in real time and simplify the user interface. The mechanism and algorithm of manipulation of virtual three-dimensional objects in space with the use of input methods with the possibility of simultaneous movement and rotation, as well as the speed and stability of work and the technology of hiding objects are implemented. A promising area of the study is the application of developed technologies in various industries.

Demografski bilans Srbije u prvoj godini pandemije COVID-19

In Serbia, from a demographic point of view, 2020 certainly stands out as one of the most significant years of the twenty-first century and, with respect to mortality, of the period after the end of the Second World War. This is mainly linked to the outbreak of the COVID-19 pandemic, which has spread across the planet at an unprecedented rate. The aim of this paper is to present the analysis of Serbia's basic demographic data during the first year of the pandemic and to highlight the most important demographic consequences of the epidemic of the current coronavirus disease. As of 31 December 2020, according to the official SORS estimates, Serbia had 6,871,500 inhabitants, 55,000 fewer than in 2019. The decline is 74% higher than the 20-year average. As the estimates do not include net migration, the real population size is significantly smaller and, according to the author's opinion, it reaches a maximum of 6.7 million (as in 1961). The death toll was 116,850 and it is 15.2% higher than in 2019. This is the highest annual number of deaths, as well as the highest annual increase, since 1950. There have been 10,365 COVID-19 deaths (8.9% of total mortality and 67.2% of excess mortality). At the same time, a record was set in terms of the number of births, but in the opposite direction. In 2020, 61,692 babies were born, which is 4.2% less than in 2019 and was also the smallest number of births since 1900. The changes in the age structure are negligible compared to 2019, but very significant compared to the age-pyramids in 2002 and 2011. The share of people aged 65 years or over (21.3%) as well as the median age of 44.0 years indicate that, in 2020, Serbia belongs to the group of ten oldest populations in the world.

ИССЛЕДОВАНИЕ ВЛИЯНИЯ РАЗБРОСА ДЕЙСТВИТЕЛЬНЫХ РАЗМЕРОВ ЗВЕНЬЕВ НА ПЕРЕДАТОЧНУЮ ФУНКЦИЮ МЕХАНИЗМА СКАЛОЧНОЙ ПОЛУАВТОМАТИКИ

In this work, the analysis of real deviations from the nominal dimensions links, and their cumulative effect on the final movement of the chain linkage element rolling semiautomatic mechanism. The considered mechanism was converted to an equivalent one, consisting of lower translational and rotational kinematic pairs. In the course of the structural analysis, the mechanism was divided into Assur groups in order to simplify further kinematic calculations. The calculation was carried out sequentially for each of the structural groups separately. Based on this, a mathematical model of the kinematics of a rolling semiautomatic mechanism was developed, taking into account the real size of the links, that is, possible deviations of the links size from the nominal values for any combination of them. Using a specific example with the given installation dimensions of the mechanism, the transfer function of the output link (wedge) is built, and the range of its possible change is determined according to the specified dimensional tolerances. Combinations of link sizes for the boundaries of the range of change of the transfer function have been determined It is shown that with the tolerances indicated in accordance with the Unified system of tolerances and fits, the deviation of the position of the output link at the extreme position of the input link (pusher) can reach ±10 of that calculated by the nominal dimensions. This model can be used to solve the problems of optimal selection of tolerances and reduce the cost of manufacturing a product, based on the kinematic restrictions imposed on the functionality of the mechanism. The proposed approach to the construction and analysis of analytical mathematical models can be relevant for a wide variety of industries: machine tool building, engine building, weapons industry and aircraft building, especially where mechanisms are used that form long kinematic chains.

Quick Olfactory Sniffin’ Sticks Test (Q-Sticks) for the detection of smell disorders in COVID-19 patients

BackgroundCoronavirus disease (COVID-19) infection represents a worldwide critical health burden from the sanitary perspective. This disease's symptoms range from a mild flu-like form to a severe life-threatening respiratory disease and respiratory failure. Several patients, however, remain paucisymptomatic. Among the symptoms that seem relevant are the changes in taste and smell, regardless of the disease's severity. MethodsData from patients affected by COVID-19 infection, hospitalized from 15 to 29 April, 2020, were analyzed. Questionnaires about smell, taste, and nasal function were administered to all, and a proportion also received the Quick olfactory Sniffin’ Sticks Test (q-Sticks) to objectivate the presence of anosmia or hyposmia. The results of instruments and Q-Sticks were then compared. ResultsThirty-seven patients (20 males, 54.1%), with a mean age 0f 69.19 years (SD = 17.96; median 76, IQR: 63–82) were evaluated. Among the patients, 8 (22%) were asymptomatic. Out of the remaining 29 patients, 28 (97%) had fever, 19 (66%) asthenia, 11 (38%) dry cough, 10 (34%) dyspnea, and 6 (21%) gastroenteric symptoms. The q-Sticks test was performed on 27 patients and showed that 6 with anosmia, and 16 patients had hyposmia, where only 5 (14%) patients complained of loss of smell by conducting the questionnaires. ConclusionAlthough olfactory disturbances may be secondary to other factors, a sudden onset of anosmia or hyposmia should be assessed as a possible symptom of COVID-19 infection. The use of questionnaires or anamnestic collection is sometimes not enough, while adding to them a simple test such as the q-Sticks test can provide more accurate and reliable data. A simple, easy-to-perform, and reliable tool (q-Sticks) for olfactory disorders assessment can be administered to identify the real size of anosmia in patients with COVID-19 infection and detect the early stage of infection or paucisymptomatic patients, therefore becoming important to reduce the spreading of the pandemic.

Alpine heritage in Swiss publications

Switzerland boasts a wide production of publications dedicated to its architectural heritage that offer an articulated overview of Swiss architecture from the so-called bourgeois to the rural one. Starting from the monumental study by the philologist Jakob Hunziker (1827-1901) on the Swiss house in its landscape and historical development, two series of books have been written, namely Die Bauernhäuser der Schweiz and Das Bürgerhaus in der Schweiz. The peculiarity of these two series is their method and completeness, the result, among other things, of a careful cultural policy capable of finding and organizing the necessary means. In this context, there are some publications with substantially different approaches to those mentioned above. The fundamental difference lies in the fact that the analyses and descriptions are not limited to the single artefacts but investigate their ways of aggregation, relating the building typology with urban morphology. This is one of the characteristics of La costruzione del territorio nel Canton Ticino by Aldo Rossi, Eraldo Consolascio, and Max Bosshard, published in 1979 by the Fondazione Ticino Nostro. In this publication, there is no solution of continuity between the vernacular buildings and the more “noble” ones, often rather ancient and the result of an extraordinary ability to include and combine elements. The example of La costruzione del territorio was followed by other publications that share its same methods and objectives. Among these, two volumes dated 1983 should be noted; they are dedicated to the villages of Avers and Soglio respectively and both were created by the Department of Architecture of the Technical School of Muttenz. In these publications, renouncing the separation between vernacular buildings and bourgeois houses leads to a more accurate reading of the real size of the settlements, as opposed to the idyllic image of the mountain village consisting exclusively of rural artefacts.

Effect of nozzle internal flow on spray angle by using real size visualization nozzle

Effect of nozzle internal flow on spray angle by using real size visualization nozzle

Research on Monitoring Method of Remote Deformation and System Application Based on Image

The development of information technology and computer science has put forward higher requirements on the intelligence of deformation monitoring. We study a method based on image deformation analysis, which uses Scale‐Invariant Feature Transform (SIFT) to extract image feature points after preprocessing the acquired images, applies All‐Pixels Matching (APM) method to the sequence images to do further high‐precision matching to achieve the accuracy of subpixels, and finally solves the deformation variables according to the relationship of the real size of the reference target and its pixel. Wavelet analysis and least squares are used to improve the image quality and matching accuracy. Based on this method, we design and develop a new remotely automated deformation monitoring system. In this paper, we introduce the algorithm principle of deformation analysis, the integration of the system, and the engineering application example of the monitoring system. The monitoring accuracy of the system satisfying 0.1 mm within 10 m and 0.8 mm within 60 m is verified in the simultaneous comparison observation according to the high‐precision total station, which illustrates the effectiveness of the present deformation analysis method and monitoring system and also has the characteristics of low monitoring cost and high degree of automation.

Brackishwater pond development: present status and problems in the Padang Pariaman Regency of West Sumatera, Indonesia

Padang Pariaman Regency is one of the coastal regencies in West Sumatra which brackish aquaculture have been developed recently, especially shrimp pond aquaculture. This study was conducted to convey the pond's general condition, including the current status and the problems in aquaculture development. The method used was a desk study through the description of the status and the problems. Based on the study, the development of shrimp ponds increased quickly (63.77 ha) until 2019, which the largest number of ponds was in Batang Anai District, and spreading over 35 points. The production of that shrimp ponds in Padang Pariaman Regency reached 1,500 tons or Rp. 135 million (in 2017), which is marketed locally and outside Padang Pariaman. Problems that arose along with shrimp pond activities are 1. Shrimp pond construction is built very close to coastal areas 2. Shrimp pond activities do not have a business license, 3. Poor waste management of shrimp culture, 4. It is low involvement of the local community as technicians at the shrimp ponds, 5. Business license arrangement is done through third parties, and 6. It is an incompatibility between the area of ponds in the license and the real size of the ponds.

Preliminary Results on the Dynamics of a Pile-Moored Fish Cage with Elastic Net in Currents and Waves

Over the last decades, the aquaculture sector increased significantly and constantly, moving fish-farm plants further from the coast, and exposing them to increasingly high forces due to currents and waves. The performances of cages in currents and waves have been widely studied in literature, by means of laboratory experiments and numerical models, but virtually all the research is focused on the global performances of the system, i.e., on the maximum displacement, the volume reduction or the mooring tension. In this work we propose a numerical model, derived from the net-truss model of Kristiansen and Faltinsen (2012), to study the dynamics of fish farm cages in current and waves. In this model the net is modeled with straight trusses connecting nodes, where the mass of the net is concentrated at the nodes. The deformation of the net is evaluated solving the equation of motion of the nodes, subjected to gravity, buoyancy, lift, and drag forces. With respect to the original model, the elasticity of the net is included. In this work the real size of the net is used for the computation mesh grid, this allowing the numerical model to reproduce the exact dynamics of the cage. The numerical model is used to simulate a cage with fixed rings, based on the concept of mooring the cage to the foundation of no longer functioning offshore structures. The deformations of the system subjected to currents and waves are studied.

Simulated 3D Model of the Middle Ear for Theoretical and Practical Training for Students, Post-Graduate ENT Diseases Students and Beginning Otosurgeons

Post-graduate ENT diseases students and beginning otosurgeons go through a very important initial training period. The first steps in otosurgery are taken step by step. The transition from theoretical knowledge to temporal bone dissection courses is long and difficult. The lack of preliminary preparation vitiates and increases the cost of temporal bone dissection exercises. Simulated models bridge the gap between theory and practice and contribute to a more effective training. Aim: Developing a simulated 3D model of the mastoid process in real size and the part of the facial nerve passing through it; using a simulated 3D model of mastoid process for anatomical visualization of the hard to find and invisible structures of the middle ear and facial nerve and for nosological training. Material and methods: 1. Cadaver temporal bone on which postauricular facial nerve decompression has been performed. 2. Elaborating a silicone model based on a print taken from the operative cavity 3. 3D printing of the models and colouring 4. Putting electrical conductors and their connection to a tactile pointer and light indicators Results: The model: –– presents the hard to find and invisible microstructures of the middle ear and the part of the facial nerve passing through it –– allows work in two modes: anatomical and nosological –– contributes to more lasting preservation of knowledge, using the principle of active learning and training visual and tactile memory. Conclusion: The model is developed for tuition, precedes training models and can be improved. ---------------------------------------------------------------- Специализантите по УНГ болести и начинаещите отохирурзи преминават през много важен начален период на обучение. Първите стъпки в отохирургията се осъществяват step by step. Преходът от теоретични познания към курсовете по Temporal Bone Dissection е труден и продължителен. Липсата на предварителна подготовка опорочава и оскъпява упражненията по дисекция на темпорална кост. Симулационните модели прехвърлят мост между теорията и практиката и допринасят за по-висока ефективност на обучението. Цел: Създаване на симулационен 3D модел в реални размери на processus mastoideus и частта на лицевия нерв, преминаваща през него; използване на симулационен 3D модел на processus mastoideus за анатомично онагледяване на трудно откриваемите и невидими структури на средното ухо и лицевия нерв и за нозологично обучение. Материал и методи: 1. трупна темпорална кост, върху която е извършена Postauricular Facial Nerve decompression 2. изработване на силиконов модел по взет отпечатък от оперативната кухина 3. 3Д принтинг на моделите и оцветяване 4. полагане на електрически проводници и свързването им към тактилна показалка и светлинни индикатори Резултати: Моделът: –– представя трудно откриваемите и невидими микроструктури на средното ухо и частта на лицевия нерв, преминаваща през него –– позволява работа в два режима: анатомичен и нозологичен –– допринася за по-трайно запазване на знанията, използвайки принципа на активното обучение и тренирането на зрителната и тактилната памет Заключение: Моделът е създаден за обучение, предхожда моделите за тренинг и може да бъде усъвършенстван.

Use of Augmented Reality for demonstration of PET/CT and X-ray room to teaching Medical Physics in Nuclear Medicine

One of the great challenges for professionals in Medical Physics (MP) is to manage the fundamentals of radiation protection, aiming at the protection itself, the patient's, the general public and the environment. Thus, the use of techniques that adopt radiological protection is extremely relevant for application and training in the area. In this sense, this paperaims to propose the application of Augmented Reality (AR) methodology as a teaching tool in MP andNuclear Medicine (NM) training, using as an example the PET/CT equipment modeling and an X-ray room. The methodology involved the analysis of the equipment and the environment cited in real size for the modeling in virtual elements, and later creation of devices in the form of QR-codes, where it is possible to visualize the modeling animations. It is understood that the use of the AR tool can aid in equipment and procedurestraining, with emphasis on those that potentially pose a risk ofoccupational exposure to ionizing radiation in NM services. In addition, it can assist in the teaching of terms and concepts, by making learning more dynamic and interactive through the visualization of equipment, meeting the fundamentals advocated by radiation protection, by avoiding, for example, visiting an hospitalenvironment.

Considerations regarding the sources of corruption

Corruption is a threat to democracy, the rule of law, social equity and justice, erodes the principles of efficient administration, undermines the market economy and endangers the stability of state institutions. Therefore, the fight against this phenomenon must be carried out by the legally authorized authorities, with the support of civil society, without any obstruction, so that no one is perceived as being above the law. In this context, the prevention of acts and facts of corruption, by monitoring conflicts of interests and incompatibilities, as well as by controlling the assets acquired illegally, must be the support of any strategy in this field. Adopting adequate measures to prevent the "corruption" phenomenon requires knowing its real size, its complexity, the trigger mechanisms and the consequences produced. The complexity and the continued diversification of the forms of manifestation of this phenomenon, together with the tendencies of globalization, require the design and elaboration of appropriate strategies, which scientifically and systematically approach the criminogenic sources and the effects of the crime and offer the effective tools for social prevention and control. The phenomenon of "corruption" is generated by ideologies, norms, individuals and groups with antisocial behavior, institutions and organizations.

Acrylic Panels Applications as Building Materials and Daylighting Devices

Enormous studies have been conducted to enhance the daylighting utilization in buildings either by direct lighting techniques, lighting reflection systems, lighting transporting systems, or by light tracking systems. The current research aims at evaluating acrylic panels as a light transmitting medium and studying their possible applications to bring natural light to inner spaces due to the lack of researches on acrylic sheets. Acrylic panels utilize the total internal reflection phenomena to convey the light for long distances. The research depended on real experiments and real measurements by using physical models with real dimensions. Many design variables had been studied like thickness, length, orientations and surroundings materials. The long-term measurements showed that acrylic panels could transmit light 8 times greater than the glass sheets, and the thickness of 20 mm for the acrylic glass panel, 30 cm collector length, 20cm diffuser length, with a steel surrounding on both sides show a great potential to transmit light up to 3493.3 lux at the diffuser during the peak hours in summer. While the results of the real size daylighting chamber show that the acrylic glass could transmit light up to 580 lux during the peak hours in summer. The study showed that the number and the distribution of acrylic glass panels in the space depend on the needed illuminance task levels. Moreover, the acrylic glass panels could be easily integrated with building materials in walls and roofs.