Abstract Tractors are used for various types of field work, as well transport on public roads, in difficult and changing environmental conditions. The main goal the study was to analyze changes trace elements engine oil during works. For this purpose, oils from two tractors were selected study. These coupled with: a cultivator, reversible plow, tillage-sowing unit, trailer. samples taken at beg...

The patient, a tall well-developed male Bengali Musalman, of the cultivator class, aged about 50, came to Hospital complaining of a lump in the neck which he stated had appeared about 4| months previously. On examination his general health appeared good. On the left side of the neck was a fairly regular ovoid mass rather larger than a large orange and occupying the greater part of the lower hal...

On the 28th November an old Mahomedan cultivator, of about 50 years, was admitted as an in-patient in the hospital with a gaping wound across the right armpit, attended with recurrent hremorrhage. The wound was produced accidentally ten days ago in the following way. Whilst leading two bullocks tied to each end of a rope, the loop of which was hanging down from his right shoulder, the animals w...

Clostridium pseudotetanicum was isolated along with Serratia marcescens, Proteus mirabilis, and Staphylococcus epidermidis from a patient suffering from gas gangrene who had been injured in the right leg by a power cultivator. Experimental infection of the hind leg of mice with C. pseudotetanicum and the three kinds of aerobic bacteria did not produce any different macroscopic finding in the in...

This paper proposes a mathematical model of a CNC rotary table driven by a worm gear. The CNC rotary tables are generally utilized as rotary axes of 5-axis machining centres. In this study, a mathematical model which can simulate dynamic behaviours of rotary table is proposed. The model consists of inertia of motor, spur and worm gears, and table. Axial displacement of the worm is also consider...

Substantial damage may occur when a rotary actuator fails during operation. Therefore, effective fault diagnosis of a rotary actuator is crucial to ensuring the safety of the device. However, only a few studies on fault detection, fault isolation, and performance assessment have focused on rotary actuators. In this study, fault detection and fault isolation processes were implemented by designi...

This in vivo, prospective, randomized, single-blinded study histologically compared biofilm/necrotic debridement efficiency of a hand/rotary technique versus a hand/rotary/1 min ultrasound technique in the mesial roots of necrotic, human mandibular molars. The hand/rotary group consisted of 20 mesial roots. The hand/rotary/ultrasound group consisted of 20 mesial roots prepared with the same han...

The applied methods of applying fertilizers for cotton in Uzbekistan do not fully ensure the supply nutrients to plant's root system. study aims substantiate technological process uniform distribution development zone and parameters coulters. When fertilizer is distributed tiers right ratio, coefficient their use increases, yield increases. research uses laws rules theoretical mechanics, mathem...

statement of problem: microorganisms are essential for the development of periradicular diseases and are one of the major causative factors associated with endodontic treatment failures. different instruments and preparation techniques have been developed in endodontics to eliminate or reduce intracanal bacteria. purpose: the aim of this study was to compare the amount of remaining e. faecalis ...