Abstract A universal conical spreader for uniform distribution of granular fertilizers and seeds grain crops, grasses is proposed. The developed designed subsurface application above-mentioned materials using seed drills can be used as a passive distributor in wide variety applications. methods theoretical mechanics descriptive geometry, particularly the method replacement projection plane have...

As the complex terrain in hilly areas is not conducive to corn mid-tillage precision fertilization, a corn-overlapped strip fertilizer spreader was designed without an external power source. By configuring passive overlapping spreading method with three-branch split chamber structure, uniform of strips achieved. A horizontal and vertical movement model developed determine angle extending tube, ...

Abstract To deal with the heat dissipation problem produced by a high integrated circuit, preparation of spreaders excellent transportation performance is increasing in demand. The Ti 3 C 2 MXene sheets and copper particles were fully contacted cellulose nanofibers high-speed mixer, composite film was prepared as spreader under action vacuum-assisted filtration. are connected esterification car...

Diamond offers great potential for use as a thermal spreader in various applications, including power electronics and radio-frequency (RF) applications. However, to be used an efficient spreader, the atomically smooth surface of diamond is critical bonded with chips. Herein, polishing technique 2-inch diameter wafer-scale bulk polycrystalline substrate proposed. In this work, 350 μm thick grown...

In this study, cup-shaped copper sheets were developed to improve heat dispassion for high-power light emitting diodes (LEDs) array module (3 × 3, 4 × 4, and 5 × 5) using an electroplating technique. The cup-shaped copper sheets were directly contacted with sapphire to enhance the heat dissipation of the chip itself. The lateral emitting light extraction and heat dissipation of high-power LEDs ...

OBJECTIVES To determine the cause of nasal valve obstruction in a series of patients requiring surgical correction, to evaluate the efficacy of our surgical techniques, and to assess the cosmetic effect of nasal valve repair. METHODS Retrospective review of 53 consecutive cases involving adult patients who underwent nasal valve reconstruction over an 8-year period. The preoperative symptom se...