Growth stresses are usually present in the fast-growing trees of forest plantations and can be evaluated along stem diameter. relaxed after tree felling during sawing drying, manifested lumber quality. Different methods have been employed to reduce effect growth stresses, such as steaming heating treatments. Excellent yield Hyeronima alchorneoides were observed, but they showed difficulties pri...

Twelve men who had been exposed to a minor asbestos hazard have been examined clinically, radiologically, and physiologically, and an assessment of the airborne asbestos concentration has also been made. Ten men had worked in a transformer department lagging transformer windings with asbestos paste for between IS and 37 years. Two of these men showed minor radiological and minor physiological c...

Studying the anatomical features of the middle ear of donkey was significant among scanty available literatures. The work was established on 14 formalized heads and dried skulls from both sexes of healthy donkeys of different ages. The samples were intended for the bony structural examination and dissection. Extraction of the auditory ossicles was difficult due to the rigidity of the temporal b...

For spruce (Picea abies (L.) Karst.), as with most other species, the value of a log is to great extent determined by its defects. That is the reason why sawyers, aiming at the optimal utilization of a log, were naturally interested in defects, their number, position and shape. X-ray computer tomography (CT) scanning is able to detect internal density variations related to defects. In order to ...

The quality of grey alder logs (Alnus incana) was studied by sawing sample logs from two different forests in November 1995–February 1996. For grading of grey alder logs and sawn timber the proposed system of Keinänen and Tahvanainen (1995) plus the reject -grade was used. In general, grey alder logs have knots from the base to the top. All types of knots appear, and the length of the knot-free...

For the accuracy of results, study was carried out for three years. The average each factory gins chosen. Comparison fiber properties processed in different cotton processing plants, with models separators. Each sample grade 1 Namangan 77 raw obtained as a result ginning such 4DP-130.5 DP-130, 3HDD and Lummus region. Fiber all samples were measured Advanced HVI Information System, to determine ...

Billions of LEDs are used today in traffic control, automotive headlights, flat panel display technology, mobile devices, back lighting, projection and general illumination applications. With the dramatic growth in LEDs, manufacturers are looking for technologies to increase production yield and decrease cost. Sapphire wafer singulation into miniature dies is one of the critical steps used in b...

Ribbon Growth on Substrate (RGS) silicon wafers are casted directly from the silicon melt onto reusable substrates. Material losses by wafer sawing are omitted and high production speeds can be achieved. However, multicrystalline RGS silicon as it is produced today incorporates high densities of crystal defects and impurities limiting the efficiency of the corresponding solar cells. The local i...

Digital Twins (DT) have been introduced as promising decision support tools in many different settings and serve a variety of purposes. Many challenges are raised by their development, including an efficient usage computational resources to balance performance on precision, cost speed. This study is, particular, concerned with Shadows (DS), concept derived from DT, applied sawmills sawing produ...