This study was conducted for the purpose of evaluating amount enteric fermentation methane emission from pigs according to breeding temperature. The external structure manufactured using flexible glass and profile, It made by sealing emitted so as not leak out. inlet exhaust were manufactured, a ring blower installed at circulate air, real-time flow rate measured with mass meter. Methane concen...

Due to the lack of freshwater resources in Egypt, cement wastewater treatment was performed widen range water used irrigation face massive future scarcity. In this study, integrated fixed-film activated sludge (IFAS) as a biological method. A laboratory pilot established simulation IFAS process. The scale-pilot consists primary sedimentation tank, an tank equipped with air blower, and final set...

Several studies on indoor air quality (IAQ) and sick building syndromes have been completed over the last decade, especially in cold countries. Efforts to make homes airtight improve energy efficiency created buildings with low ventilation rates, resulting build-up of pollutants harmful levels that would be otherwise unacceptable outdoors. This paper analyzed infiltration temperatures, variatio...

Evaporative cooling is a promising concept to reduce the fuel cell system volume and mass significantly. This paper investigates interactions between stack balance of plant in an evaporatively cooled polymer electrolyte (PEFCS). For this, zero-dimensional PEFCS model, comprising stack, air compressor, charge cooler, humidifier, hydrogen recirculation blower, condensing radiator water separator ...

The effect of air temperature (Ta) on the thermal behavior and mechanical properties steel wire rods is investigated during Stelmor cooling process using a numerical model an offline simulator. During process, rod measured in summer (28°C) higher than that winter (4°C). average difference between seasons approximately 5°C. In addition, tensile strength (TS) lower winter: TS 19 MPa. different ra...

Indonesia merupakan negara beriklim tropis yang mayoritas penduduknya adalah petani dan peternak. Salah satu jenis hewan ternak dikembangbiakkan sapi dampak negatif dihasilkan berupa polusi udara diakibatkan oleh kotoran sapi. Upaya sangat memungkin untuk menghilangkan bau berasal dari mengeringkan dengan menggunakan mesin pengering (drum dryer). Tujuan kajian ini mengetahui pengaruh kecepatan ...

This paper aims to evaluate the performance of synchronous reluctance motors assisted by a permanent magnet (PMa-SynRM) focused on efficiency and torque pulsations. PMa-SynRM shows high power factor, compared induction (IM), although they have greater cost. These machines develop relatively ripple, cogging torque, imbalances. Consequently, electromagnetic is reduced, motor temperature increased...

A special place in air pollution with dust emissions is occupied by the production of building materials, using large quantities dispersed mineral substances as aggregates. The article devoted to study hazardous fractions emission when assessing dustiness working area for concrete and reinforced products, since specific location operation equipment complex characterized uneven formation space t...

American elm trees, Ulmus americana L., were sprayed with methoxychlor by helicopter or mist blower, and twig crotches were collected from sprayed trees for bio­ assay of Scolytus multistriatus (Marsham) and GLC as­ say. Correlations established between the 2 assays were Dutch elm disease, caused by the fungus Cerato­ cystis ulmi (Buisman) C. Moreau, is a serious shade tree problem in the Unite...