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Surface grinding is one of the most extensively used procedures in industry for finishing materials. Different machining parameters have a great impact on a product's surface quality. While processing temperature increases and heat energy is generated, that may cause a few changes in the tool or work piece in chemical and physical properties. This will have an effect on the final product surface. Furthermore, numerous aspects of the machine, such as vibration, degree of freedom, and precise size, have an impact on the quality of the surface finish. The machining parameters, on the other hand, have a major role in determining the surface finish. The functional behavior of machined components can be enhanced by the grinding process, so proper selection of grinding wheel specifications and grinding parameters can result in improving the surface integrity. Because of this, understanding the surface integrity imparted by grinding is very important. This paper will display the results of an experimental study that were conducted to comprehensively investigate the effect of surface grinding input machining parameters on the formed surface quality. The experiments are running by changing the input machine parameters which are the feed rate, cutting speed, cooling method and depth of cut. The surface roughness and the cutting forces are the performance to be measured and assessed. It is concluded that the surface roughness (Ra) decreases with the increase in cutting speed and the coolant flow rate. But, as the feed rate and or the depth of cut increase the surface roughness (Ra) will also increase. The results of this investigation can be used to determine the optimal process parameters in order to obtain the required roughness quality of the produced surface in grinding of (ASTM A36) mild carbon steel. [ABSTRACT FROM AUTHOR]

The study was carried out to study the effect of the infestation by Myzus persicae (Sulzer) (Hemiptera: Aphididae) and Tetranychus urticae Koch (Acari: Tetranychidae) on the internal components of Aloe barbadensis (Miller), the common name Aloe Vera cactus which belong to (Fam. Liliaceae). Experiments were carried out at two locations (governorates), Al- Orman garden (Giza Governorate) and The international garden (Alexandria Governorate) during season 2021. Obtained results showed that the infestation by M. persicae and T. urticae reduced the concentration of the internal components of Aloe Vera leaves such as Vitamin A, Vitamin C, Vitamin E, Vitamin B12, Folic acid, Amino acids, Salicylic acids, Minerals, Sugars, Lignin, Saponins and Beta carotene. And obtained results showed also that the effect of the infestation by M. persicae was higher than the effect of the infestation by T. urticae compared to control (Aloe Vera plants which did not infest by any pests) at the two tested locations. Statistical analysis showed that were highly significant differences between concentrations of the internal components of the infested Aloe Vera cactus plants with the two tested pests compared to the concentration of the same components in the control (non-infested cactus plants). [ABSTRACT FROM AUTHOR]

This study was carried out to study the effect of the insect infestation by The Green Peach Aphid, Myzus persicae (Sulzer) (Hemiptera: Aphididae) and The Greenhouse Whitefly, Trialeurodes vaporariorum (Westwood) (Homoptera: Aleyrodidae) on the quantity of the annual production of the strawberry crop, Fragaria ananassa (L.). This study was carried out at Tokh region (Qaliobya Governorate) during two successive seasons 2020, 2021 under glasshouse conditions. This study was divided into three parts, first part studied the population fluctuation of M. persicae and T. vaporariorum on strawberry plants during the two successive seasons, second part studied the effect of insect infestation by the two insects on the quantity of the annual production of strawberry fruits at the two successive seasons compared to control (which did not infest with any insect) and third part studied the effect of insect infestation by the two insects on the internal components of strawberry fruits. Results obtained showed that the infestation by M. persicae and T. vaporariorum reduced the quantity of annual production of strawberry fruits compared to control (which was non-infested by the same insects). Also, results obtained showed that the infestation by the same insects reduced both total sugar and total protein on strawberry fruits compared to control. [ABSTRACT FROM AUTHOR]

In this paper, a linear two degrees of freedom linear bicycle model is proposed to investigate the vehicle handling criterion. The study is based on simulation developed using MATLAB / Simulink to predict the vehicle dynamic stability. Steering angle is given as an input to the mathematical model for various vehicular manoeuvres. This model is validated using a step input which is adjusted to give 0.3g lateral acceleration. The system model is simulated under a typical front wheel steering to examine the highway vehicle prediction output within its manoeuvre. This input is also adjusted to keep lateral acceleration value in steady state region. It is found that changing the vehicle center of gravity (CG) position, vehicle mass, tire cornering stiffness and vehicle speed all have a significant influence on the vehicle dynamic stability. [ABSTRACT FROM AUTHOR]

A considerable amount of vibration energy in automotive is worth of being harvested through power dissipation using regenerative suspension systems. In this study, the vehicle dynamics and energy dissipated from a Multi-State Switchable Damper (MSSD) based suspension for various vibration dynamic modes are assessed. Quantification of the energy dissipated in a MSSD is achieved through an experimental test at laboratory environment. The test results showed a linear relationship between the dissipated power and the damping modes. [ABSTRACT FROM AUTHOR]

A considerable amount of vibration energy in automotive is worth of being harvested through power dissipation using regenerative suspension systems. In this study, the vehicle dynamics and energy dissipated from a Multi-State Switchable Damper (MSSD) based suspension for various vibration dynamic modes are assessed. Quantification of the energy dissipated in a MSSD is achieved through an experimental test at laboratory environment. The test results showed a linear relationship between the dissipated power and the damping modes. [ABSTRACT FROM AUTHOR]

Fibrous reinforcements for structural composites manufacturing need to undergo in certain cases a complex shape forming process during which multiple defects could appear. These defects, such as tow buckling and tow sliding may reduce the integrity of the final part. The onset of these defects depends on the initial loading conditions, the shape of the preform and the characteristics of the textile material. While mechanisms behind the formation and development of both defects are yet to be fully understood. We focused, in this work, on investigating the buckling defect. In order to do so, we used optical field measurement techniques to monitor the kinematics of the defect appearance and predict it via an adapted analytical model of the defect appearance. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Animal & Poultry Production is the property of Egyptian National Agricultural Library (ENAL) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Animal & Poultry Production is the property of Egyptian National Agricultural Library (ENAL) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Presents information on a study which investigated the properties of electron and hole traps present in n-type GaAs[sub1-x]P[subx] alloys and their evolution versus the alloy composition through deep-level transient spectroscopy. Determination of the ionization energies of electron and hole traps; Discussion; Conclusion.

The present taxonomic revision of the family Malachidae (Genera: Attalus, attalusinus, brachyattalus, Callotroglops, Cephalonicus, Clanoptilus, Ebaeus and Hypebaeinais basedmainly on the materials, represented in the main reference insect collections in Egypt and/or materials collected during the field survey. Diagnostic characters of the genera and species based on the external morphological characters of the adults. Synonyms, taxonomical notes, local and world distribution of each species are provided. [ABSTRACT FROM AUTHOR]

A checklist of the family Megachilidaeas existing in Egypt is given, based on material kept in the main reference insect collections in Egypt and records in the literature. The list includes 102 species and 6 subspecies belonging to 9 genera of 5 tribes (Anthidini, Fidelini, Lithorgini, Megachilini, and Osmini) under two subfamilies (Fidelinae and Megachilinae), of which 84 species of seven genera and the six subspecies are insect pollinators, and 18 species of two genera are cleptoparasities. Updated scientific names and synonyms are presented together with taxonomic notes on host records and distribution for most species in Egypt. All taxa (subfamilies, tribes, genera and species are alphabetically arranged. [ABSTRACT FROM AUTHOR]

An updated checklistof the Egyptian species of the family Tenebrionidae (Coleoptera) is presented. The listincludes about 397 species belonging to 5 subfamilies in 33 tribesbased on the records in literatures and material kept in the main reference insect collections of Egypt. Synonyms of some species and the recent taxonomic position are included. The taxa (subfamilies, tribes, genera and species) are arranged in alphabetical order. [ABSTRACT FROM AUTHOR]

Domiati cheese was made from reconstituted milk (20% total solids) containing normal (C) and high level (T) of conjugated linoleic acid (CLA) content respectively using mixed probiotic Lactobacillus casei and Enterococcus fecium (1:1) as starter. The cheeses were stored in brine at 25±5°C for 60 d storage. The added probiotics grow equally well in C and T cheeses. The total viable and Lb casie counts increased to a maximum after 15 d of storage and then decreased while the counts of Enterococcus fecium and total lactic acid continued to increase until the end of the storage period. The cheeses retained high counts of these probiotics (>l07 cfu g-1) throughout the storage period. The acidity, soluble nitrogen, free amino acid, and conjugated dienes increased significantly in Domiati cheese during storage with small differences between treatments except for the significantly higher conjugated dienes in T than C treatment. [ABSTRACT FROM AUTHOR]

A pot experiment was conducted to evaluate the influence of certain oil-seed cakes i.e. fennel, sesame, anise or plant dry seed powder of red pepper as soil amendments in comparison with oxamyl or urea on controlling Meloidogyne incognita infecting eggplant seedlings under greenhouse conditions at 27 ± 5°C. Results indicated that all tested materials significantly improved the growth of eggplant and suppressing the number of galls, females and egg masses of M. incognita as compared to nematode alone. Moreover, anise oil-cake gave the best growth of total plant fresh and dry shoot weights as percentage increase (160.8 and 64%) followed by sesame oil-cake (143.5 and 64%), respectively. However, the highest values of percentage reduction for number of galls (64.2%), females (58.5%) and egg masses (55.7%) on eggplant roots were achieved by sesame-oil-cake application, followed by anise-oil-cake treatment with values of 63.0, 59.6 and 51.1% for the same nematode criteria, respectively. Meanwhile, oxamyl or urea treatment showed remarkable reduction percentages for nematode parameters tested. [ABSTRACT FROM AUTHOR]