bluuebunny/crossref_metadata_2025 huggingface dataset:
Review on Nanomaterials and Their Utilization in the Recovery of Waste Mechanical Energy by Using Piezoelectric Nanogenerators
Authors: Mishra Sakshi
Published: April 2022

Nano scale materials are defined as a set of substances where at least one dimension is less than approximately 100 nanometers. A nanometer is one millionth of a millimeter- approximately 100,000 times smaller than the diameter of a human hair. Nanomaterials are of interest because at this scale unique optical, magnetic, electrical, and other properties emerge. These emergent properties have the potential for great impacts in electronics, medicine, and other fields. Energy harvesting from the environment is one of the core features of a functional, self-sufficient nanosystem. Self-powered nanosystems combine the nanogenerator with functional nanodevices in order to harvest mechanical energy from the environment into electricity to power nanodevices. It can work independently, without any other external power sources. Piezoelectricity is the electric charge that accumulates in certain solid materials (such as crystals, certain ceramics, and biological matter such as bone, DNA and various proteins) in response to applied mechanical stress.Energy harvesting (or power scavenging) refers to capturing energy from environment, surrounding system or any other source and converting it into a usable form of energy to develop self-power system that doesn’t need external power supply e.g. piezoelectric process. In order to harvest the waste mechanical energy during various processes, piezoelectric properties of different materials such as ZnO can be utilised in order to convert the waste mechanical energy into electrical energy which could further be used.
Biodiesel as an Alternate Energy Resource: A Study
Authors: Gupta Vipul , Saksham  , Kumar Santosh , Kumar Santosh , Kumar Rakesh
Published: April 2022

As the world has been lately relied upon non-renewable fossil fuels for its daily energy requirements. Their depletion rate has been increased alarmingly, so there is a need to find an alternative energy source which can prove as a good alternative. From the many available sources, biodiesel has emerged as one of the best sources available. The reasons being included properties like it is highly biodegradable, non-toxic and has almost zero emissions. Distinct edible and non-edible oils such as coconut oil, castor oil, mahua, rice bran oil, apricot, jatropha, curcas, karanja and cotton seed oil, eucalyptus oil can be utilized to produce biodiesel. It has a potential to replace existing fuels, like diesel and petrol in many applications. This paper includes a detailed review on different aspects related to biodiesel. This includes properties, merits, demerits, extraction, and production techniques of biodiesel. In addition, future scopes of the biodiesel are also discussed in this paper.
Development of Arduino UNO Based Automated Storage and Retrieval System
Authors: Parab Anuradha S. , Gore P. N.
Published: April 2022

Automated storage and retrieval system (AS/RS) is prototyped to take account of effect of various dwell point strategies and locations of input-output station on expected travel time and throughput of system. The effect of shape function on expected cycle time and throughput of system. Arduino UNO microcontroller is used to control and operate storage and retrieval functions. Arduino UNO software provides complete package of flexible programming platform for control operation of input output devices. Android interfacing to control system provides smarter rand easily accessible human control panel.
Heat Transfer and Fluid Flow in Double Pipe Heat Exchanger, Part II: Numerical Investigation
Authors: Kotian Shreyas , Methekar Nachiket , Jain Nishant , Naik Pritish
Published: April 2022

Analysis of thermo hydraulic characteristics in a simple configuration of the double-pipe heat exchangers adds a great value to the design of heat exchangers. This paper presents a comparison of the experimental observations and numerical predictions for the thermal characteristics of the double pipe heat exchanger. A CAD design was developed and the Realizable k-ε mathematical model coupled with enhanced wall treatment gave the closest results. Experiments were performed for 60 ≤ Re ≤ 240 for two different inlet temperatures of the hot fluid, 50°C, and 70°C keeping the inlet temperature of the cold fluid constant at 31°C. Temperature gradients extracted from ANSYS Fluent were compared with the experimental data. Further, pressure and temperature contours for the hot and cold streams were generated to analyze the performance parameters.
A Literature Review on Global Challenges for Third Party Logistics (TPL or 3PL)
Authors: Hiran Gabriel D. J. , Parthiban M.
Published: April 2022

Initially, all manufacturing industries had a separate logistics department of their own for the movement of their produced goods and services. This added to the complexity and cost to the industries since they had to maintain a huge workforce for the process. Thus, companies started hiring third parties for logistics purposes, these third parties are known as Third Party Logistics (TPL) or 3PLs. Nowadays every company employs TPLs for service to carry out shipments thus focussing on their core area of development than logistics. These 3PL firms face certain challenges globally in delivering services to their customers. The paper aims to have a systematic review of the challenges faced globally by 3PLs. The paper gathers information from many pieces of literature on three important challenges namely minimizing the lead time, adapting to the Industrial Dynamics, and adapting to the advancement in technologies. The review will be helpful for future scholars in listing the challenges faced by these industries globally.
Heat Transfer and Fluid Flow in a Double Pipe Heat Exchanger, Part I: Experimental Investigation
Authors: Kotian Shreyas , Methekar Nachiket , Jain Nishant , Naik Pritish
Published: April 2022

Double pipe heat exchangers have assumed importance over the years owing to their simple construction, ease of maintenance and cleaning, and extensive use in applications involving sensible heating or cooling of process fluids. In this present study, a detailed comparison is made between the theoretical results and experimental data of the performance parameters of the heat exchanger. Experiments were performed for 60 ≤ Re ≤ 240 for two different inlet temperatures of the hot fluid, 50°C, and 70°C keeping the inlet temperature of the cold fluid constant at 31°C. Graphs were plotted between various performance parameters such as overall heat transfer coefficient, effectiveness, NTU, outlet temperatures of the hot and cold streams against mass flow rates of the fluid. Lastly, a comparison was done between the theoretical data and experimental results and they showed good accordance with a mean deviation of 10-12%.
Design Optimization of Frame of Mechanical Press Machine
Authors: Pol G. J. , Jadhav A. R. , Kadam S. J. , Kumbhar S. V. , Shinde J. G.
Published: April 2022

Power presses are used for the simple, accurate, and economical production of large quantities of articles quickly, accurately, and economically from the cold working of mild steel and other ductile materials. The components produced range over an extremely wide field and are used throughout the industry. Sometimes the pressings may be complicated and more than one pressing operation may be required. The press purpose is to shift one or more sources and movements to a tool or to die to shape or blanch a piece of work. Press design calls for the application of special knowledge about the production process. The press is designed either to perform a specific process or for primarily universal use. The manufacturing process for the metal formation is almost chip less. To perform these tasks Press tools are used. Job component deformation to the desired size is achieved by applying pressure. Presses are regarded as the best and most efficient way of shaping sheet metal into finished products. Pneumatic presses are widely used for operations such as punching, grinding, molding, clinching, blanking, deep drawing, and metal shaping.
Hydrogen Based Compounds as Energetic Catalysts for Liquid Rocket Engines: Implications and Applications
Authors: Ray Triparna , Malhotra Vinayak
Published: April 2022

In the current scenario of space propulsion, liquid propellants have significantly proved useful in the upper stage rocket engines. Over the past couple decades, the world had inclined positively towards cryogenic fuel(s) viz., liquid oxygen and liquid hydrogen due to their high specific impulse. A higher specific impulse implies lower duration to achieve design cruise velocity for a given rocket initial and instantaneous mass. Liquid hydrogen and liquid oxygen as fuel and oxidizer can generate one of the highest enthalpy release in combustion, producing a specific impulse of up to 450 seconds at an effective exhaust velocity of 4.4 kilometres per second. Whereas, selected disadvantages are encountered in the form of storage and production. This indicates overdependence on cryogenic propellants and has necessitated the active research effort for better alternatives. As an interesting alternative, the combination of Dinitrogen Tetroxide (N2O4) and Monomethyl Hydrazine (MMH) have been used for many space applications owing to an extreme storage stability and hypergolic nature. Present study aims to express the effect of hydrogen-based compounds on the rocket performance. Four distinctive compounds from two groups of hydrogen-based compounds are tested with the varying oxidizer and fuel proportions to obtain a new, cost-effective and user-friendly composition that can be prepared at room temperature. The investigation attempt and explains the effect of hydrogen based energetic propellants using N2O4 and MMH as the base composition for upper stage performance. The work is motivated by the need of efficient space operations with attractive propulsive alternatives to minimize over-dependence on cryogenics, which will ultimately result in cost effectiveness. Various energetic materials were tested with the base composition by using standard NASA-CEA complex chemical equilibrium model. The performance was evaluated in terms of variation in specific impulse and characteristic velocity both of which are significant parameters. To, validate the practical utility, the role of chamber pressure, supersonic area ratio and optimal Oxidizer to fuel ratio (O/F) was determined. The work led to two interesting findings, a composition of beryllium hydride with base composition for high performance of rockets and the negative impact of hydrogen on liquid propellants.
Regaining Loss in Dynamic Stability after Control Surface Failure for an Air-Breathing Hypersonic Aircraft Flying At Mach 8.0
Authors: Zaludin Zairil A.
Published: April 2022

The aim of the study is to reconfigure the automatic flight control systems of a hypersonic vehicle so that dynamic stability can be restored when flight control fails. LQR theory is used to first find the feedback gain when all 3 flight control systems are working. Failure was simulated one at a time to investigate lost in dynamic stability. When instability occurs, the new gains are obtained for the remaining flight controls using a modified Minimum Principal theory. The simulations show that the dynamic stability can be restored using these new reconfiguration gains if any one of the 3 flight control systems fail at one time but not in combination. The failure of elevator flaps at hypersonic speeds is likely due to aerodynamic heating. It is shown that the engine diffuser and the temperature across combustor controls can regain longitudinal dynamic stability to at least slow down the aircraft to safety. Study is limited to longitudinal motion only.
A Review on Applications of IoT in Heating, Ventilation, Air Conditioning and its Control
Authors: Bagsiraj M. Kaif R. , Narwade Shahid R. , Pirjade Khalid S. , Husainy Avesahemad S. N.
Published: April 2022

In this review paper it is discussed about how an IoT can be implemented in the refrigeration and air conditioning to save the energy at different climatic problem. We will be discussing about the knowledge of sensor, actuators, and other objects which are connected to Internet and application of IoT. While using IoT in the application it will sense the different parameter like temperature, voltage etc. and maintain the feasible condition in order to save the human time. Now-a-days industries are also using IoT to get the better results. The use of IoT is implemented in industry as well as for household purpose. In this paper, the brief description about the application of IoT in different climatic conditions and how it is beneficial for the human comfort and also how it can reduce the wastage of energy.
A Review on Recent Techniques for Food Preservation
Authors: Kokane Rushikesh S. , Upadhye Chintamani R. , Husainy Avesahemad S. N.
Published: April 2022

Food preservation is most significant in the food industry to prevent food from the growth of bacteria and yeasts which causes spoilage of food. And also for the safety and reliability of food product, the freezing plays important role in the food industries. Modern industries has introduced many innovative food preservation freezing technologies which are explained in this review paper such freezing technologies are cryogenic freezing, air blast freezing, super-chilling, high pressure freezing and also alternate freezing processes such as ultrasound assisted freezing and electrically and magnetically assisted freezing. This freezing techniques are most commonly used to preserve the food for long period in safe manner. In this food freezing process the food is cooled from ambient temperature to chilling temperature and then stored between temperature of -18 oCand -35 oC to slow down the microbiological, physicaland chemical factorswhich are responsible for spoilage and deterioration in foods. This paper aims to accelerate the developmentand implementation of these freezing technologies by the food sector to achieve better quality and shelf life of food products.
Transient Effect of Blast Loads on RCC Building
Authors: Joshi Rishabh , Professor Associate
Published: April 2022

The increase in the number of terrorist attacks has shown that the effect of blast loading on structures is a serious matter that should be taken into consideration in the design process. The blast pressure on the structure due to nearby explosion is of very high magnitude and very short duration. Such an impulsive loading requires dynamic time-history analysis. This paper describes the nature of explosion of explosive materials and dynamic pressure developed on the nearby structure in lieu of explosion. Initially, efforts have been made to determine the effect of 1000 kg of C4 explosive material as an equivalent weight of TNT on different surfaces of a building model at a stand-off distance of 22.5m. The intensity of blast load on each surface is analytically determined as a record of pressure time history. Further attempts have been made to determine the effect of distance of blast for the same explosive material on building surfaces at stand-off distance of 10m, 18.5m, 22.5m and 27m. The effect of different explosives, i.e., TNT, C4, RDX and PETN on building surfaces at constant stand-off distance of 22.5m has also been determined. From the analysis, it is observed that the effect of blast load on front and rear surface of the building is critical. For close range explosions, deformations on front surface are more but with increase in stand-off distance, maximum deformations occur in roof surface.
The Effect of the Pipe Bending Angle on the Pressure Losses Vane Elbow Pipes
Authors: Shabani Saman , Abedini Amir Abass , Mohammadtabar Ali
Published: April 2022

Pressure loss is one of the significant parameters in designing pipe bends. In this paper, the pressure distribution and pressure losses induced by turbulent ﬂows in a circular cross-sectioned piping elbow with or without guide vane were simulated. The flow distribution in the piping elbow was simulated by the k-  model using control volume method. The main objective of this study is to characterize the effect of changing the angle of pipe bend and Reynolds number on the flow separation of single-phase turbulent flow through numerical simulation. Results were validated by other experimental results and then loss coefficient was calculated in different angles from 45 to 135-degree pipe bend in various radius ratios with or without guide vane. Despite the fact that increasing pipe angle increased the pipe bend loss coefficient, using guide vane in the pipe elbow decreased this coefficient. In the radius ratio 1.5 with one guide vane, the loss coefficient of the pipe bends decreased by 50 percent in all degrees. Results revealed that the use of two vanes in pipe bend is more effective on the reduction of elbow pressure losses. Moreover, two guide vanes can decrease loss coefficient more than 50 percent. Also, the results indicated that loss coefficient decreased by increasing Reynolds number.
Thermodynamic Study of Tetrafluoroethane (R134a) Based Vapour Compression Refrigeration System
Authors: Wazeer Adil , Nagrath Vishwas , Harshit Mishra  , Dubey Kaushalendra Kumar
Published: April 2022

Energy-Energy analysis of present vapour compression refrigeration system is done using isentropic fluid as refrigerants R134a.This thermodynamic analysis is carried out by 2nd law of thermodynamic approach in terms of COPII. The performance of the system both theoretical and actual experimental have been computed in summer condition. The results of proposed title explains the high grade energy consumption by compressor with 1 TR of cooling effect. COPII indicates the actual energy output from the system in summer climate. Due to higher GWP and ODP of R22, R134a can be used for domestic / commercial and industrial applications.
Experimental Investigation on Bricks by Using Cow Dung, Rice Husk, Egg Shell Powder as a Partial Replacement for Fly Ash
Authors: Vivek S. , Priya V. , Sudharsan S. T. , Thanukrishna K. , Vignesh R.
Published: April 2022

The usage of solid waste materials in the production of construction materials has received considerable attention across the world. Various types of bricks are used in construction. The most common are conventional bricks. Owing to the exploitation of large amount of natural resources in the manufacturing of conventional bricks, we provide an alternative solution for conventional bricks through this project. The present study investigates the feasibility of using rice husk powder, cow dung and egg shell powder in the manufacturing of fly ash bricks. Fly ash bricks of different compositions with rice husk, cow dung and egg shell powder were prepared in steel moulds. After casting, the brick samples were stored at 35 C and a relative humidity of 50% until the ages required for testing. The brick samples were checked for dimensions and visible defects. The effects of rice husk, cow dung and egg shell powder contents on the engineering properties of the solid bricks were also investigated. The test results showed that all brick samples exhibited good compressive strength. The compression strength ranged between. It is concluded that the manufactured bricks acquired sufficient strength and became more economical.
Prediction of Compressive Strength of Nano Alumina, Micro Alumina & Fly Ash Blended with Cement by Using Coefficient of Correlation
Authors: Hemanth Kumar G. , Ajitha B.
Published: April 2022

In this research study, the effect on High Strength Concrete (HSC) by partial replacement of cement with Nano alumina, micro alumina and fly ash on the mechanical properties of the concrete is studied. In this investigation the cement is replaced by 20% Fly ash, 5% micro alumina and nano alumina of different proportion i.e., 0.25%, 0.5%, 0.75%, 1% in M60 grade of concrete. It is observed that the concrete's workability is reduced by increasing the content of nano alumina from 0% to 1% and constant micro alumina particles of 5% cement (by Wt.) and fly ash of 20% cement (by wt.). The results showed that 0.75% of the combination of nano alumina, micro alumina and fly ash increases the properties of the high strength concrete. The microstructure characteristics results revealed that the Nano alumina, micro alumina and fly ash particles incorporated enhances the cement's mechanical strength properties and the voids were filled up with these materials. The present investigation is mainly focused on reliability assessment to the High Strength Concrete by using by using Karl Pearson’s correlation coefficient.
Face Cover: It is Time to Upgrade Our Masks
Authors: Gijare Omkar
Published: April 2022

The planet Earth is currently facing one of its most critical crisis over the history in form of COVID-19 Pandemic. Around the globe, almost every nation is penetrated by Coronavirus and the number of patients is increasing day by day. Along with time, the lockdowns are going on in each nation and their durations are not in condition of limiting. In education and various other sectors, it is being advised to run activities on digital platform but there are limitations on this platform regarding its capacity and its reach. In order to resume classes in schools and other educational institutes, (whenever the situation will permit this) the boundaries of social distancing are going to be very difficult to be maintained. The face cover seems to be one of the solutions for such situations. Only function of this face cover is to avoid direct touch of hands to the face strictly at all conditions. At the same time, it will contain the respiratory particulates of the wearer inside so that if someone is infected, the outbreak will be avoided. This face cover is capable of covering wearer’s hair, mouth, nose and eyes and hence, it provides extensive safety to person from infection hazards. It is also equipped with the provision near mouth for opening so that the food and beverage consumption can be easily performed without removing the whole cover. Thus, the probability of infection can be reduced with such extensive protection and the world can proceed towards unlocking the environment.
Social Development in Rural Pakistan: Growth, Performance and Problems
Authors: Samota Kailash Chand
Published: April 2022

Social development means development of social structure such as Education, Health, Sanitation, Drinking water, Residence etc. Generally two kind of resources, one is natural and second is human resources but human resources is more important because they use of natural resources and make a developed country. So social development for any country is more important for development. Defined Social Development in terms of three basic criteria (The Copenhagen Social Summit 1995) Poverty Eradication and Employment Generation and Social Harmony. According to Amartya Sen “Social Development is equality of social opportunities.”Social Development is the stability of a sustainable society with human dignity. Its mean that the empowering marginalised groups of society.
A Review on Recycled Aggregate based Thermal Insulated Concrete
Authors: Anuja N. , Balaji M.
Published: April 2022

One of the major challenges of our present society is the protection of environment. Therefore concrete must be such that, it can conserve resources, protect the environment through the utilization of waste materials, economize and lead to proper utilization of energy. In India, the approximate rate of production of construction and demolition wastes is reported to be 14.5 million tonnes annually. The most preferable method of managing these solid wastes is to dump them into the landfills. This creates problems such as pollution in landfill areas and highly increased disposal cost in urban areas. Therefore, recycling and re-using these demolition wastes as recycled aggregates to produce the concrete has been identified as a fruitful way to mitigate the scarcity of natural resources, waste management and environmental issues. Another existing problem is of heat balance, heat always flows from warmer to cooler surfaces. This flow does not stop until the temperature in the two surfaces is balanced. Recycled aggregate alone with thermal insulation material reduce the rate of heat transfer. In this paper a study has been made on the past researches carried out by the different scholars and their results have been studied.
The Effect of Compaction Effort on Fatigue Performance of Cold Emulsified Bitumen Mixes with Reclaimed Asphalt Pavement
Authors: Naveen P. , Chakravarthi Sarella , Shankar S. , Kumar Raj , Vishnu R.
Published: April 2022

During the service period, flexible pavements tends to produce series of distresses, such as rutting, cracking, pothole, etc. When the distresses are severe, the best method is to recycle the distressed layer using stabilizers like emulsified asphalt or some additives and that layer can be used as a base\sub base or surface course based on the purpose. The milled material is known as Reclaimed Asphalt Pavement (RAP) and the application of emulsified asphalt comes under cold mix asphalt technologies. This can help to create a cleaner production including lesser usage of natural aggregates and lower carbon emissions. Compaction is one of the significant factors in order to prevent premature failures and for better performance of the mix. A properly compacted base develops adequate density and strength; the present study investigated the influence of compaction effort on the fatigue performance of Emulsified Asphalt Treated Bases (EATB). The performance indicators include Indirect Tensile Strength (ITS), Resilient Modulus (MR), and fatigue characteristics. Finally, the study developed the models between ITS and MR for different fluid contents.
Assessing Impact of Geophysical Hydro-Meteorological Hazards Based on Perception Approach, Kinnaur Region, Himachal Pradesh
Authors: Lal Ram , Anand Vicky
Published: April 2022

Disaster has been a continuous problem in the history of mankind and its effects have also been devastating. India’s geo-climatic conditions as well as its high degree of socio-economic vulnerability, makes it one of the most disaster-prone country in the world. Landslides are the most costly geo-hazard in the world, and they’re often the cause or the result of other hazards and disasters such as tsunamis, earthquakes, forest fires, and volcanic eruptions. It leads to an extreme disruption in the functioning of a society, causing widespread human, material and environmental loss and it exceeds the ability of the affected society to cope with its own resources. Kinnaur district of Himachal Pradesh has a hilly and mountainous topography which has a limited scope for human settlement and other human activity. The most common types of disaster in the region are earthquake and landslide. Apart from this, other kinds of disaster are also faced by the people of the region such as heavy rainfall, snowfall, deforestation, floods, soil erosion etc.  The present study aims at analyze the landslide vulnerability and mitigation strategies and also the role of administration and community in their preparedness. The study is based on both primary as well as secondary data. Quantitative method was used to assess the landslide induced vulnerability and risk assessment in the study area. By using science and technology, community based management makes it possible to reduce the impact of disasters like earthquake and landslide in the study area.
Istat’s new strategies to increase statistical literacy
Authors:   Istituto Nazionale di Statistica, Ascari Barbara , Mortati Francesco Michele ,   Istituto Nazionale di Statistica
Published: April 2022

Official statistical information is a public good and therefore should become common heritage in a full sense. One of the fundamental aims of a National Institute of Statistics is to increase people’s statistical literacy. In order to achieve this, Istat decided to review its communication and didactic priorities and strategies and to start from young people: they must be considered as one of the key groups towards which new statistical 3 literacy activities should be directed. However, the main difference from the past lies in the idea of using the high computer technology and web 2.0 skills which young people nowadays possess in order to attract them to statistics. Our goal is clear: to increase young people’s statistical awareness in order to make them more responsible citizens. Many activities have been already performed and many others are going to be performed.
Refereed paper using customer satisfaction surveys as a teaching resource in statistics education: methods and benefits
Authors:   University of Haifa, Gal Iddo , Ograjenšek Irena ,   University of Ljubljana
Published: April 2022

This paper examines how customer satisfaction surveys can be used as a tool for effective engagement of students who are learning introductory statistics at the tertiary education level in topics which have practical relevance for their future employment and enable an outreach into their communities. We first outline some of the core characteristics of customer satisfaction surveys, and then provide illustrative examples which demonstrate the advantages of including data from such surveys in the undergraduate statistics curriculum, e.g., with regard to going beyond technical analysis into issues of measurement, sampling methodology, data presentation, and more. Such an approach has the potential to improve students' understanding of statistics as well as their ability to interpret and discuss the results of statistical analyses within a real-world, employment-oriented context.
معوقات تطبيق إدارة الجودة الشاملة في مراكز التأهيل الشامل ودور الخدمة الاجتماعية في مواجهتها (دراسة مطبقة على مراكز التأهيل الشامل بمنطقة مكة المكرمة)
Authors:   ماجستير في التنظيم والإدارة في الخدمة الاجتماعية، قسم الخدمة الاجتماعية، كلية العلوم الاجتماعية، جامعة أم القرى، المملكة العربية السعودية, القثامي عبد الله
Published: April 2022

تهدف الدراسة في معرفة واقع تطبيق الجودة الشاملة في مراكز التأهيل الشامل ومعرفة المعوقات لتي تواجهها من خلال معرفة المعوقات التنظيمية والمهنية والمعرفية لتطبيق إدارة الجودة الشاملة، تحديد مستوى رضا المبحوثين عن الخدمات المقدمة بمراكز التأهيل الشامل، الكشف عن أهمية ومستوى جودة الخدمة المقدمة، معرفة الفترة الزمنية التي يتلقى فيها المبحوثين الخدمة بمراكز التأهيل الشامل، رصد مستوى التأثر بتوقف الخدمة. تم استخدام المنهج الوصفي في الدراسة لتحديد الدقيق ووصفُ وتحليل معوقات تطبيق إدارة الجودة الشاملة في مراكز التأهيل الشامل ودور الخدمة الاجتماعية في مواجهتها على مراكز التأهيل الشامل بمنطقة مكة المكرمة، وتمثل مجتمع الدراسة بجميع الأخصائيين الاجتماعيين العاملين بمراكز التأهيل الشامل بالمملكة العربية السعودية والبالغ عددهم (86) موظفاً. تم إجراء هذه الدراسة خلال العام الدراسي 1442-1443. واقتصرت الحدود المكانية للدراسة على مراكز التأهيل الشامل الحكومية بمدينة مكة المكرمة، وتم استخدام الاستبانة كأداة للدراسة في جمع المعلومات والبيانات، وتوصلت الدراسة الى مجموعة من النتائج أهمها: أن من أهم المعوقات التنظيمية لتطبيق إدارة الجودة الشاملة بمراكز التأهيل الشامل عدم توافر الدعم المالي المخصص لتحسين أداء العاملين، وتعدد الأعمال والمهام لدى الموظف الواحد وضعف الحوافز المادية للعاملين، أن غياب عوامل الأمن والسلامة المهنية وضعف الصيانة الدورية لمرافق مراكز التأهيل الشامل لا تعتبر من المعوقات التنظيمية، أن عدم وجود أدوات قياس رضا العاملين والعملاء بمراكز التأهيل الشامل وقلة الاستعانة بالخبراء في مجال إدارة الجودة الشاملة من أهم المعوقات المهنية لتطبيق إدارة الجودة الشاملة بمراكز التأهيل الشامل.
مستوى التميز القيادي لدى مديرات المدارس الثانوية بمحافظة الطائف
Authors:   ماجستير في الإدارة التربوية، كلية التربية، جامعة الملك عبد العزيز، المملكة العربية السعودية, بإبراهيم وفاء عبود
Published: April 2022

يهدف البحث إلى التعرف على مستوى التميز القيادي لدى مديرات المدارس الثانوية في بناء الخطة الاستراتيجية، وتهيئة المناخ الإداري الداعم للتغيير، والتعامل مع المرؤوسين وتحفيز أعضاء المجتمع المدرسي، ودعم الأنشطة المدرسية ودعم لجان المدرسة، وإدارة الأزمات المدرسية، وكذلك الكشف عن وجود فروق بين المعلمات في تقدير مستوى التميز القيادي لدى المديرات تبعاً لمتغير سنوات الخبرة. وأستخدم البحث المنهج الوصفي المسحي، والمنهج الوصفي المقارن. تكون مجتمع البحث من مديرات المدارس الثانوية الحكومية في شرق وغرب محافظة الطائف وعددهن الكلي (45) مديرة خلال العام الدراسي (1434هـ- 1435هـ)، ومعلمات المدارس الثانوية الحكومية في شرق وغرب محافظة الطائف وعددهن الكلي (1561) معلمة خلال العام الدراسي (1434هـ- 1435هـ). واشتملت عينة البحث على عينة عشوائية من معلمات المدارس الحكومية بنسبة (20%) لكل مديرة مدرسة. (إدارة التربية والتعليم، 1434هـ). تم بناء استبانة البحث المكونة من (5) محاور للتوصل الى نتائج البحث. وكانت أهم التوصيات والمقترحات من البحث في دعم جوانب التميز القيادي لدى المديرات من قبل الإدارة العليا، متابعة متطلبات واحتياجات المدارس بتهيئة بيئة مساعدة على التميز القيادي، تقديم دورات تدريبية للمديرات عن التميز القيادي.
DEVELOPMENT OF NEW ADSORBENTS OF MYCOTOXINS FOR IMPROVE THE SANITARY QUALITY OF FEED AND THE SAFETY OF FOOD PRODUCTION OF ANIMAL ORIGIN
Authors: Kozinec A.I. , Dubina I.N. , Kapitonova E.A.
Published: April 2022

The article presents the results of laboratory tests of “Belasorb” and “MeKaSorb” feed additives on the basis of tripoli developed and patented by us. As a result of laboratory studies it was found that the adsorption activity of “Belasorb” adsorbent is within the following limits: for aflatoxin – at least 81.0%, ochratoxin – 77.1%, deoxynivalenol – 64.2%, T2-toxin – 56.4% and zearalenone – 42.0%. The sorption activity of “MeKaSorb” in relation to certain types of mycotoxins is: aflatoxin – at least 92.0%, ochratoxin – at least 77.0%, T-2 toxin –56.48%, deoxynivalenol (DON) – at least 64.2%, zearalenone – 42.0%.
Sparse assortment personalization in high dimensions
Authors: Shao Jingyu , Dong Ruipeng , Zheng Zemin ,   International Institute of Finance, School of Management, University of Science and Technology of China, Hefei 230026, China
Published: April 2022

The data-driven conditional multinomial logit choice model with customer features performs well in the assortment personalization problem when the low-rank structure of the parameter matrix is considered. However, despite recent theoretical and algorithmic advances, parameter estimation in the choice model still poses a challenging task, especially when there are more predictors than observations. For this reason, we suggest a penalized likelihood approach based on a feature matrix to recover the sparse structure from populations and products toward the assortment. Our proposed method considers simultaneously low-rank and sparsity structures, which can further reduce model complexity and improve its estimation and prediction accuracy. A new algorithm, sparse factorial gradient descent (SFGD), was proposed to estimate the parameter matrix, which has high interpretability and efficient computing performance. As a first-order method, the SFGD works well in high-dimensional scenarios because of the absence of the Hessian matrix. Simulation studies show that the SFGD algorithm outperforms state-of-the-art methods in terms of estimation, sparsity recovery, and average regret. We also demonstrate the effectiveness of our proposed method using advertising behavior data analysis.
Первое указание Bembix rostrata (Linnaeus, 1758) (Hymenoptera, Crabronidae) для Тюменской области, Россия
Authors: Сергеева Елена Викторовна , Столбов Виталий Алексеевич
Published: April 2022

Bembix rostrata (Linnaeus, 1758) впервые приведен для фауны Тюменской области. Данный вид роющих ос отмечен в г. Тобольск и еще в трёх районах области, где встречается от лесостепной зоны до южной тайги.
 
БлагодарностиРабота Е.В. Сергеевой выполнена в рамках государственной темы НИОКТР (№ 122011800529-3).
Preparation and Evaluation of Efavirenz Loaded Solid Lipid Nanoparticle for improving Oral Bioavailability
Authors: Srivastava Ashish , Gupta Harshita
Published: April 2022

Efavirenz (EFV) is a highly lipophilic, oral non-nucleoside reverse transcriptase inhibitor reported to have poor aqueous solubility and bioavailability used for the treatment of HIV. In the present research work, solid lipid nanoparticles loaded with efavirenz were formulated for oral drug delivery and to increase the bioavailability of efavirenz. Solid lipid nanoparticles loaded with efavirenz were prepared through the microemulsion method followed by the lyophilization technique using glyceryl monostearate as lipid and Tween 80 as a surfactant. Solid lipid nanoparticle formulation was evaluated using different parameters including Scanning electron microscopy (SEM), drug entrapment efficiency (EE%), in vitro drug release study, differential scanning calorimetry, and powder X-ray diffractometry. Solid lipid nanoparticles loaded efavirenz showed 60.41% drug entrapment. Differential scanning calorimetry and powder X-ray diffractometry study indicate solid lipid nanoparticles loaded efavirenz is crystalline, stable and there is no interaction between the excipients and drug. In vitro drug release study of EFV-SLN showed 88.2±0.12% drug release which is better as compared to marketed formulation drug release. EFV-SLN drug release study data demonstrated a better fit for the first-order kinetics and confirmed the non-Fickian-diffusion mechanism. Prepared SLN formulation has shown good stability at 45∘C and 75% relative humidity (RH) for 150 days. These results determined that the developed EFV-SLN formulation exhibited a promising antiviral activity to treat HIV and has great potential for boosting the oral bioavailability of Efavirenz.
In silico Study of Natural inhibitors for Human papillomavirus-18 E6 protein
Authors: Proboningrat Annise , Kharisma Viol Dhea , Muhammad Ansori Arif Nur , Rahmawati Rinza , Fadholly Amaq , Ann Villar Posa Gabrielle , Sudjarwo Sri Agus , Abdul Rantam Fedik , Budianto Achmad Agung
Published: April 2022

Globally, the leading cause of death from cancer in women is infection with the human papillomavirus (HPV). This calls for imperative actions to explore anticancer drugs against this threatening viral infection, in which case, natural ingredients are presumed to be a promising source. Several studies show that plant-origin compounds such as allicin, apigenin, capsaicin, cyanidin, fisetin, genistein, laricitrin, naringenin, piperine, and syringetin have demonstrated therapeutic effects against several cancer types. In this study, the interaction mechanism of these compounds with HPV-18 E6 oncoprotein, that is known to downregulate tumor suppressor p53, was predicted using an in silico approach. Molecular docking simulations of natural ligands and E6 protein were performe, followed by chemical interaction analysis and 3D molecular visualization. Results indicated that fisetin is the best natural inhibitor as it has the lowest binding energy. It is highly recommended that the results of this study be used as a reference in designing anticancer drugs in vitro and in vivo.
Transdermal Drug Delivery System: An Overview
Authors: Nagdev Sanjay A. , Agrawal Omprakash , Rageeb Md. , Usman Md.
Published: April 2022

From the past three decades there are huge changes and developments in formulation technology. Innovations in drug delivery systems are not only associated with the development of novel dosage forms but also with the development of new formulations using existing drugs for the treatment. These innovations in delivery of drug have many advantages like better patient compliance, maintenance of steady state concentration of drug for the prolong period, reducing dosing frequency, drug targeting to desired site of action and low side effects. TDDS are designed for delivery of drugs across the skin and it provides both controlled and continuous administration drug. It terminates the pulsed entry of drug in systemic circulation due to which side effects are observed. This transdermal route of drug delivery has more benefits and convenience than oral route and enhances the safety and efficacy of drug; it is patient friendly and painless device that provides regulated, uniform administration and the continuous supply of drug to targeted site for treatment of various diseases.
Nghiên cứu tạo quy trình chế biến khô xơ mít
Authors: Diệp Kim Quyên
Published: April 2022

Với yêu cầu về thực phẩm của người tiêu dùng ngày càng cao, cũng như xuất phát từ việc nguồn nguyên liệu mít ở nước ta rất dồi dào nhưng lại mau hư hỏng. Xơ mít là phần phụ phẩm thường được bỏ đi. Nghiên cứu chế biến khô xơ mít nhằm tạo ra sản phẩm mới, giàu chất xơ, dễ sử dụng, dễ bảo quản. Nghiên cứu khảo sát ảnh hưởng của tỷ lệ phối trộn gia vị và chế độ sấy thích hợp để sản phẩm đạt giá trị dinh dưỡng và cảm quan cao. Kết quả cho thấy phối trộn gia vị thích hợp là 2% đường và 0,5% bột cà ri (so với nguyên liệu xơ mít) và chế độ sấy thích hợp là sấy ở nhiệt độ 70oC, độ ẩm dừng 20%.
Cost of Hypertension Therapy in Tertiary Health Facilities in Bayelsa State, Nigeria – Patients’ Perspective
Authors:   Department of Clinical Practice and Pharmacy Practice, Faculty of Pharmacy, Niger Delta University, Bayelsa State, Nigeria, Joseph B.A. , Eniojukan J.F. ,   Department of Clinical Practice and Pharmacy Practice, Faculty of Pharmacy, Niger Delta University, Bayelsa State, Nigeria, Suleiman I.A. ,   Department of Clinical Practice and Pharmacy Practice, Faculty of Pharmacy, Niger Delta University, Bayelsa State, Nigeria, Momo A. ,   Pharmacy Department, Federal Medical Centre, Yenagoa, Bayelsa State, Nigeria
Published: April 2022

Background - Funding needs to be sustainable for hypertension treatment so there is need to evaluate the cost of therapy regularly to guide decision making. Objective - The aim is to evaluate the cost of achieving goal blood pressure (BP) of 139mmHg systolic and or 89mmHg diastolic from the patients’ perspective in 2 tertiary health facilities. Methods – Folders of clinically diagnosed hypertensive adult patients aged 21-80years in 2 tertiary health facilities were surveyed retrospectively. Sampling was by systematic random sampling technique choosing every third folder from a list. Sample size was calculated with Cochrane formula for population less than 10,000. Out of 723 folders reviewed 227(31.4%) achieved goal BP. Cost of therapy was computed for the 227 folders using the facility price list and local costs for transportation and BP monitoring. Bottom-up, Sum_ Diagnosis specific technique was used to compute component costs excluding intangible costs. Discounting and sensitivity tests were not applicable. Results - The cost range was NGN3,105-NGN35,350($8.87-$101) per patient for 30days Mean monthly patient cost was NGN10,460.38 ($30). Proportion of component costs in total costs was as follows, Laboratory tests 35.17%, Medicines 31.89%, Hospital charges 22.86%, Transportation 5.58%, Income loss 2.53% and BP monitoring 1.97%. The pattern revealed one facility had slightly higher costs and lower proportion of patients reaching goal BP. Conclusion – Cost of therapy was too high. Monthly cost range was 17.5-19.6% of minimum wage. Policy makers need to adopt strategies to reduce cost and protect hypertensive patients.
Assessment of the Pituitary-Ovarian Axis Function in Response to Caffeine Ingestion in Pubertal Sprague-Dawley Rats
Authors:   Department of Physiology, Faculty of Basic Medical Sciences, College of Medicine, University of Lagos, Awobajo F.O. , Ogbu J.I. ,   Department of Physiology, Faculty of Basic Medical Sciences, College of Medicine, University of Lagos, Ukonu C.S. ,   Department of Physiology, Faculty of Basic Medical Sciences, College of Medicine, University of Lagos, Wellighton N. ,   Department of Physiology, Faculty of Basic Medical Sciences, College of Medicine, University of Lagos
Published: April 2022

Background: Some complications of infertility arise from various factors such as environmental pollution, occupational toxicants, including dietary factors. Caffeine consumption in our diet, from coffee, tea and cigarette of all kinds, has impacted reproductive health. Method: Eighteen mature female Sprague-Dawley rats, with weights ranging between 140-184 g, were used. The rats were divided into three groups (in no order; six rats per group): Control group, 5mg caffeine administered rats and 10 mg caffeine administered rats. The rats were smeared before administration of caffeine to ensure they are normal cycling rats. Caffeine, with concentrations of 5 ml/kg and 10 ml/kg, was administered to the appropriate groups for four weeks. The rats were smeared, after four weeks of administration, to check their phase in the oestrous cycle. Samples of their ovaries were weighed and corpus luteum counted. Serum level of follicular stimulating hormone (FSH), luteinizing hormone (LH) and thyroid stimulating hormone (TSH) obtained from their blood samples were collected and determined. TSH level was significantly reduced at dioestrous phase in 5 mg group. Results: Both serum FSH and LH were significantly reduced at dioestrus in both 5 mg and 10 mg groups. Caffeine expressed dose dependent stimulatory effect on TSH while it precipitated a reduction in serum FSH and LH level at all doses used during dioestrus. The 10 mg stimulated FSH and LH secretion at oestrous phase which enhances growth and maturation of follicles. Conclusion: Caffeine thus modulates the activities of the pituitary gland in regulating female reproduction.
Some aspects of the reproductive biology of the common carp (Cyprinus carpio Linnaeus 1758) in Marmara Lake, Western Anatolia, Turkey
Authors: DERELİ Hakkı , KEBAPÇIOĞLU Turhan , ŞEN Yusuf
Published: April 2022

There is a knowledge gap in some lakes of Turkey regarding the reproductive biology of the common carp (Cyprinus carpio Linnaeus, 1758), a very important freshwater commercial species. This study aims to determine for the first time the spawning period and length at first maturity (Lm50) from the reproductive characteristics of common carp in Marmara Lake in Western Turkey. A total of 650 individuals were sampled between December 2015 and November 2016. The sex ratio (♂:♀) was calculated as 0.88:1 (p
Broken Theory
Authors: Sondheim Alan
Published: April 2022

Broken Theory is a jettisoned collection of fragmentary writing, collected and collaged by new media artist, writer, musician, and theorist Alan Sondheim. Folding theoretical musings, text experiments, and personal confessions into a single textual flow, it examines the somatic foundations of philosophical theory and theorizing, discussing their relationships to the writer and body, and to the phenomenology of failure and fragility of philosophy’s production. Writing remains writing, undercuts and corrects itself, is always superseded, always produced within an untoward and bespoke silo – not as an inconceivable last word, but instead a broken contribution to philosophical thinking. The book is based on fragmentation and collapse, displacing annihilation and wandering towards a form of “roiling” within which the text teeters on the verge of disintegration. In other words, the writing develops momentary scaffoldings – writing shored up by the very mechanisms that threaten its disappearance.

Broken Theory is prefaced by a text from Maria Damon and followed by an extensive interview with art historian Ryan Whyte.